BA02195C/66/EN/03.24
70219347

Products

SolutionsOperating Instructions
OXY5500 gas analyzer
ATEX/IECEx/UKEX: Zone 2
cCSAus: Class I, Division 2

Services

Operating Instructions

2

OXY5500 gas analyzer

Endress+Hauser

OXY5500 gas analyzer

Operating Instructions

Table of Contents
1

About this document ............................ 4

1.1 Warnings .................................................................. 4
1.2 Symbols on the device............................................. 4

5.7 Digitals menu ........................................................ 25
5.8 Analog output settings (Analogues) menu........ 26
5.9 Measurement menu options................................ 27

1.3 U.S. export compliance ........................................... 4

5.10 Measurement settings (Meas. settings) menu
options ................................................................... 31

2

5.11 Device settings menu options .............................. 35

Introduction .......................................... 5

2.1 Associated documents ............................................ 55.12 Sensor menu options ............................................ 38

2.2 Who should read this manual................................ 5

5.13 Purging the cylinder pressure regulators andanalyzer.................................................................. 46

2.3 How to use this manual .......................................... 5
2.4 General warnings and cautions ............................. 6
2.5 Documents provided with the OXY5500 analyzer................................................................................... 7

5.14 Digitals menu options........................................... 52
5.15 Analog output settings (Analogues) menu
options ................................................................... 53

2.6 Manufacturer address ............................................ 76

2.7 About the OXY5500 analyzer ................................ 7

6.1 Protocol definition ................................................ 58

2.8 Getting familiar with the analyzer ........................ 7

6.2 Examples ................................................................ 67

2.9 Safety guidelines ...................................................11

7

3

Safety ................................................... 12

7.1 Technical notes ..................................................... 70

3.1 Potential risks affecting personnel .....................12

7.2 Spare parts ............................................................. 72

48Installation.......................................... 13

4.1 Shipping box contents ..........................................13
4.2 Inspecting the analyzer ........................................13
4.3 Installing the analyzer ..........................................13
4.4 Required basic equipment ....................................13
4.5 Hardware and tools for installation ....................14
4.6 Analyzer mounting ...............................................14
4.7 Connecting electrical power to the analyzer ......15
4.8 Analyzer connections ...........................................17
4.9 Analog outputs/analog input connections .........17

5

Operation ............................................ 20

Modbus communication .................... 58

Appendix A: Specifications ................ 69

Appendix B: Maintenance andtroubleshooting .................................. 74

8.1 Optical output ........................................................ 74
8.2 Cleaning the instrument ...................................... 74
8.3 Temperature probe lifespan ................................ 74
8.4 Fuse replacement .................................................. 75
8.5 Replacing the electro-optical module ................. 76
8.6 Installing/replacing the pressure sensor ........... 77
8.7 Removing and replacing the oxygen probe ........ 79
8.8 Correcting error codes .......................................... 84
8.9 Recommendations for correct measurement ..... 84
8.10 Performance improvement .................................. 85

5.1 Starting up the analyzer .......................................20

8.11 Troubleshooting .................................................... 85

5.2 Operation overview ...............................................20

8.12 Service .................................................................... 86

5.3 Measurement menu ..............................................22

8.13 Packing and storage ............................................. 86

5.4 Measurement settings (Meas. settings) menu ..23

8.14 Storage ................................................................... 87

5.5 Device settings menu ............................................24

8.15 Disclaimers ............................................................ 87

5.6 Sensor menu ..........................................................24

8.16 Warranty ................................................................ 87

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1

About this document

1.1

Warnings

Structure of Information
WARNING

Causes (/consequences)
Consequences of noncompliance (if applicable)‣ Corrective action
CAUTION

Causes (/consequences)
Consequences of noncompliance (if applicable)‣ Corrective action
NOTICE

Cause/situation
Consequences of noncompliance (if applicable)‣ Action/note

1.2
SymbolOXY5500 gas analyzer

Meaning
This symbol alerts you to a dangerous situation. Failure to avoid
the dangerous situation can result in a fatal or serious injury.

This symbol alerts you to a dangerous situation. Failure to avoid
this situation can result in minor or more serious injuries.

This symbol alerts you to situations which may result indamage to property.

Symbols on the device
Description
The High Voltage symbol that alerts people to the presence of electric potential large enough to cause injury or
damage. In certain industries, high voltage refers to voltage above a certain threshold. Equipment and conductors thatcarry high voltage warrant special safety requirements and procedures.
The WEEE symbol indicates that the product should not be discarded as unsorted waste but must be sent to separate
collection facilities for recovery and recycling.
The CE Marking indicates conformity with Essential Health, Safety & Environmental requirements of Directive
2014/34/EU for products sold within the European Economic Area (EEA).
The UKCA marking indicates conformity with Essential Health, Safety & Environmental requirements of Directive
UKSI 2016:1107 for products sold on the market in Great Britain (England, Wales and Scotland).

1.3

U.S. export compliance

The policy of Endress+Hauser is strict compliance with U.S. export control laws as detailed in the website of the
Bureau of Industry and Security at the U.S. Department of Commerce.

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OXY5500 gas analyzer

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Operating Instructions

Introduction

Endress+Hauser’s OXY5500 Optical oxygen analyzer is a stand-alone device designed to detect oxygen in gases suchas natural gas and air. Its design is based on fluorescence quenching technology that creates very stable, internallyreferenced measured values.

2.1

Associated documents

Enclosed in your analyzer system order is the product safety instruction for your reference. Please review allnecessary safety instructions before installing or operating your analyzer. This document is an integral part of thecomplete document package, which is listed in the following table.
Part Number

Document Type

Description

BA02195C

Operating Instruction

Provides a comprehensive overview of the analyzer and step-by-step
installation instructions

BA02196C

Sample Conditioning System (SCS)
Operating Instruction

Commission, operation, and maintenance details for the Sample
Conditioning System

SD02868C

Service Software Instruction

Instructions for operating the OXY5500 Service software to diagnoseand maintain OXY5500 Optical oxygen analyzer systems

TI01656C

Technical Information

Provides technical data on the device with an overview of associatedmodels available

XA02754C

Safety instruction

Safety instructions for the OXY5500 Optical oxygen analyzer

For additional instruction manuals, please refer to the following:•

For custom orders: Refer to the Endress+Hauser website (https://endress.com/contact) for the list of local sales
channels to request order-specific documentation. Order-specific documentation is located by analyzer serial
number (SN).

•For standard orders: Refer to the Endress+Hauser website product page to download the published manuals forthe analyzer: www.endress.com.

2.2

Who should read this manualThis manual should be read and referenced by anyone installing, operating, or having direct contact with theanalyzer.

2.3

How to use this manual

Take a moment to familiarize yourself with the content included in this Operating Instruction by reviewing the tableof contents.
There are a number of options and accessories available for the OXY5500 analyzers. This manual has been written toaddress the most common options and accessories. Images, tables, and charts have been included to provide a visual
understanding of the analyzer and its functions. Special symbols are also shown to provide the user with key
information regarding the system configuration and/or operation. Pay close attention to this information.

2.3.1

Conventions used in this manual

In addition to the symbols and instructional information, this manual is created with “hot links” to enable the user toquickly navigate between different sections within the manual. These links include table, figure, and sectionreferences and are identified by a pointing finger cursor when rolling over the text. Simply click on the link tonavigate to the associated reference.

Endress+Hauser

5Operating Instructions

2.4

OXY5500 gas analyzer

General warnings and cautions

Instructional icons are provided in this manual to alert the user of potential hazards, important information, andvaluable tips. Following are the symbols and associated warning and caution types to observe when servicing theanalyzer.

2.4.1

Equipment labels
SymbolDescription
Follow instructions to avoid possible explosion.

Follow instructions to avoid electrostatic discharge.

Use appropriate tools to avoid electrostatic discharge.

Substitution of components may void certification.

Switch off power before replacing components to avoid explosion risk.

Switch off power before disconnecting system to avoid explosion risk.

Ensure grounding wire is connected at all times during operation.

2.4.2
SymbolInstructional symbols
Description
General notes and important information concerning the installation and operation of the analyzer.
Failure to follow all directions may result in fire.
Failure to follow all directions may result in damage or malfunction of the analyzer.
Maximum voltage and current specifications for fuses.

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OXY5500 gas analyzer

2.5

Operating Instructions

Documents provided with the OXY5500 analyzer

Each OXY5500 analyzer shipped from the factory is packaged with documents and software that are to be used forsystem operation, as applicable to the system configuration. Typically, each shipment includes the following
documents:•

Operating Instruction (electronic copy)•

Sample Conditioning System (SCS) Operating Instruction (electronic copy)•

OXY5500 Service Software Operating Instruction (electronic copy) (and software)•

OXY5500 Safety instruction (paper copy)•

Calibration Certificate (paper copy)

2.6

Manufacturer address

Endress+Hauser
11027 Arrow RouteRancho Cucamonga, CA 91730
United States
www.endress.com

2.7

About the OXY5500 analyzer

The OXY5500 is a stand-alone precision oxygen analyzer enclosed in an ingress protected stainless steel case. The
rugged design and low power consumption makes the OXY5500 ready for an indoor or outdoor application in Class I,
Division 2, Groups A, B, C, and D, T3. In addition, the analyzer is also marked as
II 3 G, Ex ec IIC T3 Gc IP66.
The OXY5500 is designed for three types of measurement ranges: 0 to 1000 ppmv, 0 to 5% O2, and 0 to 20% O2.
This analyzer was specifically designed for gas measurements using a flow through fiber-optic oxygen sensor
mounted in a 1/4 in. compression tee. The instrument LCD and data-logger are integrated into the system. The
analog outputs are programmable to provide data for oxygen and temperature. The digital interface and PC software(included) are used for internal data storage and external data logging. Complete control, including all calibration
and adjustments, can be completed through the PC.

2.7.1

Temperature

Endress+Hauser’s optical oxygen sensors must be used with an RTD probe (Pt100 temperature sensor) in thetemperature ranges shown in Appendix A → . Each instrument is supplied with the RTD probe for compensationand to record temperature variations.

2.7.2

Cross-sensitivity

The sensors can be used in methanol- and ethanol-water mixtures, as well as in pure methanol and ethanol.
Endress+Hauser recommends avoiding other organic solvents, such as acetone, chloroform, or methylene chloride,
which may swell the sensor matrix, rendering it unusable.
There are no cross-sensitivity issues with CO2, H2S, or SO2 (iconic species) pertaining to any of the three probe types.

2.8

Getting familiar with the analyzer

The figure shows a sample OXY5500 analyzer. Signal wiring and analyzer power are connected from the right side of
the analyzer (facing the unit). On the front panel of the analyzer, the LCD serves as the user interface to the analyzer.
The analyzer control electronics drive the sensor, collect the signal, and provide measurement output signals.

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Operating Instructions

OXY5500 gas analyzer

1

5

2

6

3

7

4

8
Figure 1. OXY5500 analyzer#

Description

1

Keypad2

Oxygen Probe

3

Pressure Sensor (Optional)

4

RTD Probe (pt100)

5Graphic Display

6

Signaling Port

7

Analyzer Power Port

8

Chassis Ground Stud

A0056242

Inside the cabinet is the electro-optical module that provides power and other connections to the analyzer. Refer tothe figure for an internal view of the analyzer.
The optional Sample Conditioning System (SCS) contains flow devices for the bypass loop and to control the flow tothe oxygen sensor. A pressure reducing device is also installed to reduce and control the pressure of the sample goingto the oxygen sensor. Depending on the application and/or ambient conditions, the SCS may also contain a heaterand thermostat to maintain the interior of an optional enclosure at a constant temperature. Refer to the Sample
Conditioning System (SCS) operating instructions for more information.

2.8.1

Oxygen probe

The oxygen sensor consists of a polymer optical fiber (POF) with a polished distal tip that is coated with a planar
oxygen-sensitive foil. The end of the polymer optical fiber is covered with a high-grade steel tube to protect both thesensor material and the POF. Refer to the figure. Typically, the fiber is coated with an optical isolated sensor material
in order to exclude ambient light from the fiber sensor spot.
2.8.1.1

Schematic drawing for the oxygen probe

Refer to Figure 5 for a schematic of the trace oxygen probe.
2

1
Figure 2. Trace oxygen probe schematic

8#

Description

1

Sensor spot

2

SMA connector

A0056243

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Operating Instructions

1
4
2

5
6

3

7

A0056244

Figure 3. Inside cabinet view (AC version)#

Description

1

Electro-optical module

2

Fuse enclosure

3

SMA connector

4

AC/DC power connection

5

RJ-45 and USB connectors

6

Relay connections

7

Protective earth ground1
2
3
A0052870

Figure 4. OXY5500 probe sensor spot#

Description

1

OP-3

2

OP-6

3

OP-9

Endress+Hauser’s fiber-optic oxygen sensors are made with 2 mm polymer optical fibers. The sensing portion is a 4
mm stainless steel probe. As a standard, the probe is mounted in a 1/4 in. Swagelok Union Tee using a 1/4 in. x 4mm adapter as shown in Figure 5. Please contact your sales representative for more information.

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OXY5500 gas analyzer

A0052871
A0052872

Figure 5. Standard fiber-optic oxygen sensors fittings

2.8.2

How an oxygen sensor works

The principle of measurement is based on the effect of fluorescence quenching by molecular oxygen.
Principle of fluorescence quenching by molecular oxygen (refer to Figure 6):
1.

Fluorescence process in absence of oxygen:oAbsorption of light: Excitation energy from the analyzer to the sensor spot.

oEmission of light: In the absence of oxygen, the sensor spot decays to original energy state. The lightemitted during decay is quantified by the analyzer.

o2.

Excited state: Sensor spot becomes excited.

Fluorescence process in the presence of oxygen:oAbsorption of light: The light from an LED is absorbed by the sensor spot.

oEmission of light: If the sensor encounters oxygen molecules, the excess energy is transferred to themolecule, decreasing, or “quenching” the fluorescence signal. The degree of quenching correlates to theoxygen partial pressure.

oExcited state: Sensor spot becomes excited.

A0052880

Figure 6. Principle of dynamic quenching of luminescence by molecular oxygen

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2.9

Operating Instructions

Safety guidelines
NOTICE Please read these instructions and the OXY5500 Safety Manual (XA02754C) carefully before working with this
instrument.
All functions of this device has been carefully tested and comply with safety requirements, prior to leaving thefactory. The correct functional and operational safety of this instrument can only be ensured if the user observes thenecessary safety precautions and specific guidelines presented in this manual. Refer to Appendix A →  and the list
outlined below.
•

Before connecting the device to the electrical supply network, ensure that the operating voltage stated on the
power supply corresponds to the main voltage input as described in Appendix A.

•

If the instrument is moved from cold to warm surroundings, condensation may form and interfere with thefunctioning of the system. In this event, wait until the instrument temperature reaches room temperature before
putting the analyzer back into operation.

•

Calibration, maintenance, and repair work must only be completed by qualified trained personnel.

•

If there is any doubt as to the working condition of the analyzer, return the instrument for repair, andmaintenance. Consult with Service → .

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Operating Instructions

3

Safety3.1

Potential risks affecting personnel

OXY5500 gas analyzer

This section addresses the appropriate actions to undertake when faced with hazardous situations before or duringservice of the analyzer. It is not possible to list all potential hazards within this document. The user is responsible for
identifying and mitigating any potential hazards present when servicing the analyzer.
NOTICENOTICE Technicians are expected to follow all safety protocols established by the customer that are necessary forservicing the analyzer. These may include, but are not limited to, lockout/tag-out procedures, toxic gas
monitoring protocols, personal protective equipment (PPE) requirements, hot work permits, and otherprecautions that address safety concerns related to performing service on process equipment located inhazardous areas.

3.1.1

Mitigating risks

Refer to the instructions for each situation listed below to mitigate associated risks.

3.1.2
1.

Electrocution hazard

Shut off power at the main disconnect external to the analyzer and open the enclosure.
CAUTION Complete this action before performing any service that requires working near the main input power ordisconnecting any wiring or other electrical components.
2.

Open enclosure door.

3.1.3

Explosion hazard

Any work in a hazardous area must be carefully controlled to avoid creating any possible ignition sources (e.g., heat,arcing, sparking, etc.). All tools must be appropriate for the area and hazards present. Electrical connections mustnot be made or broken with power on (to avoid arcing).

3.1.4

Electrostatic discharge

Use a damp cloth to clean the display and keypad to avoid static electricity discharge.
Adhere to all warning labels to prevent damage to the unit. Refer to General warnings and cautions → .

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OXY5500 gas analyzer

4

Operating Instructions

Installation

This section describes the processes used to install and setup your OXY5500 analyzer. Once the analyzer arrives, fully
examine the contents before installing the unit.
NOTICE Endress+Hauser Class I Division 2 analyzers use a non-incendive protection method and Zone 2 uses anincreased safety ec protection method; as such, all portions of the local electrical installation codes apply. The
maximum allowed inductance to resistance ratio (L/R ratio) for the field wiring interface must be less than 25μH/Ω.
 The safety of the analyzer is the responsibility of the installer and the organization he/she represents.

4.1

Shipping box contents

The contents of the crates should include:•

The Endress+Hauser OXY5500 analyzer•

Optional Sample Conditioning System (SCS), if applicable•

A USB flash drive or CD, which includes this manual and other system manuals, calibration certificate, andsoftware. Refer to Documents Provided with the OXY5500 Analyzer → .

•

One USB cable (for Service purposes)

If any of these contents are missing, refer to Service → .

4.2

Inspecting the analyzer

Unpack and place the unit on a flat surface. Carefully inspect all enclosures for dents, dings, or general damage.
Inspect the supply and return connections for damage, such as bent tubing. Report any damage to the carrier.
CAUTION Avoid jolting the instrument by dropping it or banging it against a hard surface.
Each analyzer is custom configured with various accessories and options. If there is any discrepancy with your order,
please contact your local sales channel.

4.2.1

Lifting/carrying the analyzer

At approximately 5.44 Kg (12 lbs) without the sample conditioning system, the OXY5500 can easily be lifted fromthe packaging and moved to the installation location. Take care to lift or carry the analyzer by the enclosure and notby any ancillary probes or cables or damage may occur.
If the analyzer is configured with an optional integrated sample conditioning system (SCS), two individuals may berequired to lift and move the analyzer system. Refer to the OXY5500 SCS Operating Instructions (P/N BA02196C) for
more information.

4.3

Installing the analyzer

Installing the analyzer is relatively easy requiring only a few steps that, when carefully followed, will ensure proper
mounting and connection. This section includes information regarding:•

Hardware and Tools for Installation•

Analyzer Mounting•

Connecting Electrical Power to the Analyzer•

Analog Outputs/Analog Input Connections

4.4

Required basic equipment

The following components are shipped with the OXY5500 analyzer from the factory for installation and operation:•

Flow-through Tee fitting with probe•

Flow-through Tee fitting for temperature probe and pressure sensor (pressure sensor is optional)

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Operating Instructions

4.5

OXY5500 gas analyzer

Hardware and tools for installation

Depending on the particular configuration of accessories and options ordered, you may need the following hardware
and tools to complete the installation process.

4.5.1

Hardware•

1/4 in. (~6 mm) thickness Unistrut® (or equivalent) bolts and spring nuts•

Stainless steel tubing (using 1/4 in. [~6 mm] O.D. x 0.035 in. wall thickness, seamless stainless steel tubing is
recommended)•

3/4 in. conduit or appropriate Ex e M20 cable gland•

1/4 in. (M6) screws with an appropriate screw length for wall material, e.g., concrete, drywall, etc.

4.5.2

Tools

•

Drill and bits•

Tape measure

•

Level

•

Pencil•Screw driver (Philips)•

Screw driver, small (Flat-head)•

Needle-nose pliers

4.6

Analyzer mounting

The OXY5500 analyzer is manufactured for wall or Unistrut® (or equivalent) metal framing installations. Dependingon your application and configuration, the analyzer will come mounted on a plate or Unistrut frame. Refer toAppendix A for drawings with detailed wall mounting dimensions.
NOTICE When mounting the analyzer, be sure not to position the instrument so that it is difficult to operate adjacentdevices. Allow 1 m (3 feet) of room in front of the analyzer and any switches.
CAUTION It is critical to mount the analyzer so that the supply and return lines reach the supply and return connections on
the chassis while still maintaining flexibility so that the sample lines are not under excessive stress.
NOTICE Mounting brackets for equipment exceeding 18 kg intended for wall mounting and/or part(s) that support heavyloads must withstand four times the maximum static load.
CAUTION Because the breaker in the power distribution panel or switch will be the primary means of disconnecting thepower from the analyzer, the power distribution panel should be located in close proximity to the equipment andwithin easy reach of the operator, or within 3 meters (10 feet) of the analyzer.

4.6.1
1.

Mounting the analyzer

Select a suitable location to mount the analyzer. Choose a shaded area or use an optional analyzer hood (orequivalent) to minimize sun exposure.
CAUTION

 Endress+Hauser analyzers are designed for operation within the specified ambient temperature range. Refer toAppendix A. Direct sun exposure in some areas may cause the analyzer temperature to exceed the maximum
range.
2.

14

Locate the mounting holes on your unit. Refer to Figure 7 and the system drawings in Appendix A→ .

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OXY5500 gas analyzer

Operating Instructions

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1

1

1

A0056208

Figure 7. Analyzer mounting hole locations (1)3.

For wall installations, mark the centers of the top mounting holes.

4.

Drill the appropriate size holes for the screws you are using.

5.

Hold the analyzer in place and fasten with the top screws.

6.

Repeat for the bottom mounting holes.

Once all four screws are tightened, the analyzer will be very secure and ready for the electrical connections.

4.7

Connecting electrical power to the analyzer

The OXY5500 is able to interface with either AC or DC power connections.
NOTICE The OXY5500 is available in power options of either 240 VAC or 9 to 30 VDC (CSA), or 18 to 30 VDC(IEC/ATEX/UKEX). The OXY5500 can be powered by an DC source via connection directly to the terminal of the
DC/DC converter terminals. The AC powered is wired directly to the power supply mounted to the back plate.
CAUTION Interconnection of the analyzer enclosure must be accomplished using wiring methods approved for Class I,
Division 2 or Zone 2 hazardous locations as per the Canadian Electrical Code (CEC) Appendix B or J and the
National Electric Code (NEC) Article 501 or 505. The installer is responsible for complying with all local
installation codes.

4.7.1

AC connection

AC power is connected to the AC Power Supply at L1, N, and GND. Refer to the figures for the Analyzer Power Port
location and the wiring connection diagram.

4.7.2

DC connection

DC power is connected to the DC Power Supply at VI+ and –. Refer to Figure 1 for the Analyzer Power Port location
and Figure 73 for the wiring connection diagram.
WARNING Hazardous voltage and risk of electric shock. Before attaching the wiring to the analyzer, make sure the main
breaker/power switch is off.
CAUTION

 Careful consideration should be taken when grounding. Properly ground the unit by connecting the main groundlead to the protecting grounding stud labeled with the ground symbol. Connect the chassis ground stud to plantgrounding using 6mm2 or 10-gauge wire.
 Do not exceed the 36 VDC power rating or electronics will be damaged.
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Operating Instructions

4.7.3

OXY5500 gas analyzer

Protective chassis and ground connections

Before connecting any electrical signal or power, the protective and chassis grounds must be connected.
Requirements for the protective and chassis grounds are as follows:•

The protective and chassis grounds must be of equal or greater size than any other current-carrying conductors,
including the heater located in the sample conditioning system.

•

The protective and chassis grounds must remain connected until all other wiring is removed.

•

If the protective and chassis ground is insulated, it must use the green/yellow color.

Refer to Figure 1 and Figure 2 for the protective and chassis ground locations.

4.7.4

Connecting electrical power to the analyzer

Open the OXY5500 analyzer electronics enclosure door. Take care not to disturb the electrical assembly inside.

1.

WARNING Hazardous voltage and risk of electric shock. Failure to properly ground the analyzer may create a high-voltage
shock hazard.
Run conduit or armored braided cable from the power distribution panel to the conduit hub on the right side of
the analyzer enclosure labeled for power input.

2.

CAUTION

 Conduit seals or Ex e cable gland should be used where appropriate in compliance with local regulations.
 Because the breaker in the power distribution panel or switch will be the primary means of disconnecting thepower from the analyzer, the power distribution panel should be located in close proximity to the equipment andwithin easy reach of the operator, or within 3 meters (10 feet) of the analyzer.
 The electrical installation to which the analyzer is connected must be protected against transients. The protective
device has to be set at a level not exceeding 140% of the peak rated voltage values at the power supply terminals.
 An approved switch or circuit breaker rated for 15 amps should be used and clearly marked as the disconnecting
device for the analyzer.
For AC systems, pull ground, neutral (N), and L1 wires into the electronics enclosure. Refer to Figure 8.

3.

For DC systems, pull VI +, – and ground wires into the electronics enclosure. Refer to Figure 8.

A0056246

Figure 8. AC/DC power connections

A0056247

4. Strip back the jacket and/or insulation of the wires just enough to connect to the power terminal block.
5. Connect the main ground wire to the protection ground terminal marked.

6. Close and tighten the analyzer enclosure door.
NOTICE Apply 2.25 nm (20 in-lbs) of torque on each bolt to ensure the door is closed properly to maintain required
ingress protection.

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OXY5500 gas analyzer

4.8

Operating Instructions

Analyzer connections

The fiber optic oxygen cable to the SMA connector, located at the bottom of the OXY5500, will be installed at thefactory. Additional connectors are available as shown in Figure 9.
NOTICE RS-232/RS-485 Interface: The unit has standard RS-232 communication via Modbus protocol. Use care in
making connections as described in Modbus Communication →  to avoid communication problems andpotential damage to the unit.
 Optical Module with SMA Connector: The optical module with SMA connector is used to connect to the oxygen
probe, which is installed at the factory.
 USB Connection: The USB connection is for service and troubleshooting purposes only. Do not connect during
normal operation. To avoid damage to the port, use only the USB Mini B cable to connect to the unit. Refer to theService Software Operations Manual (P/N 4900002254) for system requirements.
 Ethernet: The unit uses standard Modbus - TCP/IP communication. Use a CAT5 (or better) cable and makeconnections per IEEE 802.3 standard.
1
4

2

5
6

3

A0052881

Figure 9. Analyzer connections

4.9#

Description

1

TB1

2

Fuse Box

3

Optical module with SMA Connector

4

RJ-45

5

USB

6

TB2

Analog outputs/analog input connections

The OXY5500 is equipped with two independent analog outputs and one analog input. The 4-20 mA current loop andserial output are connected terminal blocks located inside the analyzer electronics enclosure. By default, the 4-20mA
current loop analog outputs (IOUT1/IOUT2) are set to inactive.
The analog outputs are programmable to oxygen and temperature. To allow external data collection, one input port
is available (i.e., external pressure sensor).
Connections can be made with customer-supplied cables for the current loop and alarms. Refer to Figure 10.
WARNING Hazardous voltage and risk of electric shock. The analog outputs are not protected against any input voltage. Any
voltage applied to the analog outputs can cause irreversible damage to the circuit.
 Hazardous voltage and risk of electric shock. Turn off and lock out system power before opening the electronics
enclosure and making any connections.
CAUTION

 Endress+Hauser Class I Division 2 analyzers use a non-incendive protection method and Zone 2 uses anincreased safety ec non-arcing protection method; as such, all portions of the local electrical installation codes
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Operating Instructions

OXY5500 gas analyzer

apply. The maximum allowed inductance to resistance ratio (L/R ratio) for the field wiring interface must be lessthan 25 µH/Ω.
NOTICE The 4-20 mA outputs are configured as sourcing to provide power to the loop. If a PLC/HMI is used to provide
power to the loop, an isolator is necessary and must comply with the specifications provided in the table.
Installation of the isolator must comply with the non-incendive or non-arcing protection method detailed in thenote above.
 Certified Ex e glands and cables, or conduit seal and conduit, should be used where appropriate in compliancewith local regulations.

4.9.1

Connecting the analog outputs/analog inputs

1.

Disconnect power from the analyzer and open the electronics enclosure cover. Take care not to disturb theelectrical assembly inside.

2.

Run conduit or rated armor cable with the appropriate cable glands (minimum Exe rated) from the analog
outputs/inputs receiving station to the conduit hub in the right outside corner of the electronics enclosure.

3.

If using conduit, pull the customer-supplied cables for the source outputs through the conduit into the electronics
enclosure.
KEYPAD
EX2400000035

ENCLOSURE BODY

EX0800000020
TRANSMITTER MODULE

5

4

3

2

1

1

2

L1 N

+ + - -USE ONLY IN STANDARD
VERTICAL MOUNTINGORIENTATION WITH THE
INPUT TERMINALS ON
TOP OF THE UNIT

KEYPAD
CONNECTORRJ45MINI USB 2.0
ETHERNET PORTPROPRIETARY
TCI/IP MODBUSSERVICEV1+

232
GND TX

TB1 1 3

5

GND

7

9

V2+

232
GND Rx GND 485(B-)

2

4 6

8

2 1
N L1 GND

485(A+)

TB2 1 3 5 7 9 11 13 1510

2 4 6 8 10 12 14 16

N

L1 GND

AC POWER SUPPLY
EX4000000004(1 OF 2 POWER
CONDITIONINGOPTIONS)PANEL 0900002202

PRESS SENSOR
EX5500000001

FIBER OPTICCONNECTOR(SMA)

A0056265

Figure 10. TB1/TB2 connections

If using rated armor cable, wires are already provided. Skip to step 4.
4.

18Strip back the jacket and insulation of the current loop output and serial cables just enough to connect to themating terminal block.
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OXY5500 gas analyzer

Operating Instructions

5.

Connect the 4-20 mA current loop IOUT1/IOUT2 output wires to terminals 6 and 8, as shown in Figure 9 and thetable.

6.

Connect the serial cable wires to the appropriate terminals according to the table (TB1).

7.

To complete the connection, connect the other end of the current loop wires to a current loop receiver and theexternal serial cable to a serial port on your computer.

Pin

Label

Description

Function

1

L-S1

Relay output, switch #1 (400V/250mA; R = max 8 Ohm)

General Fault Alarm; normally closed

2

L-S1

Relay output, switch #1 (400V/250mA; R = max 8 Ohm)

3

L-S2

Relay output, switch #2 (400V/250mA; R = max 8 Ohm)

4

L-S2

Relay output, switch #2 (400V/250mA; R = max 8 Ohm)

5

GNDA

Analog output #1 ground

6

IOUT1

Analog output #1 (4 – 20 mA); max load = 800 Ohm

7

GNDA

Analog output #2 ground

8

IOUT2

Analog output #2 (4 – 20 mA); max load = 800 Ohm

9NC

Not connected—

10

Psense-Analog input (4 – 20 mA); Sense (-)

Pressure sensor input

11

Psense+Analog Input (4 – 20 mA); Sense (+) loop-power 16 to 24 VDC;
max current = 32 mA

12

RTD +

4-wire RTD Pt100; Sense (+)

Temperature probe

13

RTD -

4-wire RTD Pt100; Sense (-)

Temperature probe

14

FRC+

4-wire RTD Pt100; Force (+)

15

FRC-

4-wire RTD Pt100; Force (-)

16

GNDT

RTD ground (Shield)

Concentration Alarm; normally closed
Configurable analog output #1
Configurable analog output #2

Table 1. Terminal block TB2
The 4-20 mA outputs are configured as sourcing to provide power to the loop. If a PLC/HMI is used to provide power to the loop, an isolator will be
required.

1

Pin

Label

Description

Function

1

V1+

Power supply 24 VDC - Factory connection

DC power input

2

V2+

Power supply 24 VDC - Factory connection

DC power input

3

GND

Power supply GND - Factory connection

Power ground

4

GND

Power supply GND - Factory connection

Power ground

5

232TX

RS-232 transmitter output (typical signal level ± 6 V)

RS-232 signal transmit

6

232Rx

RS-232 receiver input (typical signal level ± 6 V)

RS-232 signal receive

7

GND

RS-232/RS-485 groundRS-232/RS-485 signal ground8

GND

RS-232/RS-485 groundRS-232/RS-485 signal ground9

485(A)+

RS-485 non-inverting receiver input and non-inverting driver

RS-485 signal

10

485(B)-

RS-485 inverting receiver input and inverting driver output

RS-485 signal

Table 2. Terminal block TB1Endress+Hauser

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Operating Instructions

5

OXY5500 gas analyzer

Operation

The instructions provided in this chapter should be used to start up, configure, and operate the OXY5500. On the faceof the analyzer is an LCD with programming and data readouts. Refer to Figure 1 for an external view of the analyzer
with descriptions.

5.1

Starting up the analyzer

Before powering up the OXY5500, refer to the system drawings in Appendix A →  to confirm the proper power
connections to the power supply, temperature sensor, and oxygen sensor.
As soon as the OXY5500 is connected to the power supply, the analyzer begins running a short self-test sequence.
Refer to the figure.

Figure 11. Initial screen - Self-check

A0052882

The display switches to the main measurement screen automatically. Refer to the figure.
To achieve a highest accuracy, the OXY5500 should be warmed up for approximately five minutes before taking ameasurement.
NOTICE Warm-up time may be extended up to 15 minutes if the optode has been exposed to high concentrations ofoxygen.
After the warm-up, complete a field calibration to achieve accurate measurements. Refer to Performing a manual
calibration (calibration using sensor values) → .

5.2

Operation overview

The screens and menus described in this chapter are used to program and operate the OXY5500. Links have been
included to assist in navigating through the instructions. Refer to Conventions used in this manual → , which
explains hot links and how to use them. Other conventions used in this chapter to describe user actions and to assist
in software or manual navigation include:•

Underlined text: Used to show clickable program buttons in the software.

•

ALL CAPITAL LETTERS: Used to indicate screens or windows viewed throughout the software program.

•

Italic text: Used to indicate software fields that can be edited.

•

Bold text: Used to indicate links to other sections or chapters in the manual.

After the analyzer has been initialized, the MAIN MENU screen displays. Refer to Figure 12.

20

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OXY5500 gas analyzer

Operating Instructions

1

2

3
A0052883

Figure 12. Main menu screen#

Description

1

Status bar

2Main screen

3

Navigation bar

NOTICE The OXY5500 display is divided into three sections: status bar, main screen, and navigation bar.
The status bar shows:•

Time: The OXY5500 has a 24-hour clock setting.

The OXY5500 must be calibrated before use. Refer to Performing a two-point calibration → .
NOTICE If the power to the analyzer is disabled, the Time and Date will be set to 0 on start-up. A warning message will
display in the Status bar as shown in Figure 13.

Figure 13. Warning: Timestamp reset

A0052884

Reset the Time and Date settings as shown in the Device Settings Menu →  before starting a new measurement sothat the correct time is stored in the data.
•

The Monitor symbol in the Status bar indicates that logging is activated.

•

The Monitor (X) symbol in the Status bar indicates that logging is not activated.

The Main screen consists of the central area of the display above the Navigation Bar and provides information about
the analyzer.
The Navigation Bar is across the lower section of the display and shows the Control buttons used to perform actionsin the analyzer.
•

Click Menu to access the MAIN MENU screen.

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Operating Instructions

OXY5500 gas analyzer

Refer to Figure 14 for a view of the MENU MAP that outlines the OXY5500 software structure. This section gin witha review of the top level menu screens (shown in grey boxes in the Menu Map) and then continue with an overview
of the accessible screens available from each menu screen.

Figure 14. OXY5500 software menu map

5.3

Measurement menu

Selecting Measurement from the MAIN MENU screen displays the currently measured values and measurement
settings. Refer to Figure 15.

A0052885

Figure 15. Main menu screen - Measurement selected

Views can be selected for simple, detailed, or graphical presentations of the measurements. Use the buttons to switch
between screens. Refer to Measurement Menu Options →  for more information on accessing screen views fromthis menu selection.
22

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OXY5500 gas analyzer

Operating Instructions

CAUTION If power to the analyzer is disabled, Time, and Date settings will be set to zero. Before starting a newmeasurement, reset the Time and Date in Device settings screen → , so that the correct measurement time isstored with the data.

5.4

Measurement settings (Meas. settings) menu

General measurement setting changes are performed in the MEASUREMENT SETTINGS menu. If the measurement
settings are not changed, the settings from the last measurement will be applied.
The Measurement Settings (Meas. Settings) window is selected from the MAIN MENU screen. Refer to the figure.

A0052886

Figure 16. Main menu screen - Measurement settings selected

1.

Select Meas. Settings from the MAIN MENU screen. A message window displays requiring confirmation to abortthe currently running measurement. Refer to Figure 17.

A0052887

Figure 17. Message window - Stop measurements during configuration

2. Click Yes to stop the measurement in order to display the MEASUREMENT SETTINGS screen. Refer to Figure 18.

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Operating Instructions

OXY5500 gas analyzer

A0052888

Figure 18. Measurement settings screen

3. Use the Arrow buttons to navigate between screens.

5.4.1

To enter editing mode

1.

Click OK to enter editing mode.

2.

Change the setting or value (one digit at a time) by clicking the Arrow buttons.

3.

Click OK again to save the changes.

5.4.2
1.

To exit editing mode

Click Menu to cancel and exit.

Refer to Measurement Settings (Meas. Settings) Menu Options →  for more information on setting temperaturecompensation, pressure compensation, interval or logging, and data management.

5.5

Device settings menu

Select Device Settings from the MAIN MENU screen to display the analyzer settings. Refer to Figure 19.

A0052889

Figure 19. Main menu screen - Device settings selected

The DEVICE SETTINGS menu is divided into three screens: DEVICE SETTINGS, SENSOR DETAILS, and ABOUT. Refer
to Device Settings Menu Options →  for more information on setting these options.
Use the Arrow buttons to switch between screens.

5.6

Sensor menu

Select Sensor from the MAIN MENU. Refer to Figure 20. This selection opens the SENSOR OPTIONS window.

24

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OXY5500 gas analyzer

Operating Instructions

A0052890

Figure 20. Main Menu - Sensor selected

In the SENSOR OPTIONS window, the user can click the Change Parameters button for the connected sensor, theCalibration button to perform a sensor calibration, or the Relative Accuracy Test Audit (RATA) button. Refer toFigure 21.

A0052891

Figure 21. Sensor options•

Up and Down Arrows: Navigate up and down in the sensor list.

•

OK: Select the sensor options. The display will switch to respective screens.

•

Menu Arrow: Return to the MAIN MENU screen.

Refer to Change parameters →  and Calibrating the analyzer on →  for more information about these functions.

5.7

Digitals menu

From the MAIN MENU, select Digitals to change the digital connection setting of the OXY5500. Refer to Figure 22.

A0052892

Figure 22. Main menu screen - Digitals selected

Before displaying the DIGITALS screen, a message window displays requesting confirmation to abort the currently
running operation. Refer to Figure 23.

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Operating Instructions

OXY5500 gas analyzer

A0052887

Figure 23. Message window - Stop measurements during configuration

Select Yes and stop the measurement to proceed with the Digitals settings.
The DIGITALS menu is divided into three screens: RS-232, RS-485, and TCP/IP settings. Refer to Digitals Menu
Options →  for more information for setting these options.
Use the Up and Down Arrow buttons to navigate between input fields.

5.7.1

To enter editing mode

1.

Click OK to enter editing mode.

2.

Change the setting or value (one digit at a time) using the Up and Down Arrow buttons.

3.

Click OK again to save editing changes.

5.7.2
1.

To exit the editing mode

Click Menu to cancel and exit.

5.8

Analog output settings (Analogues) menu

From the MAIN MENU, select Analogues to change the analog output settings. Refer to Figure 24.

A0052893

Figure 24. Main menu screen - Analogues selected

Before displaying the ANALOGUES screen, a message window displays requesting confirmation to abort the currently
running operation. Refer to Figure 25.

26

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OXY5500 gas analyzer

Operating Instructions

A0052887

Figure 25. Message window - Stop measurements during configuration

Select Yes and stop the measurement to proceed with the Analog Output settings.
The ANALOGUES menu is divided into four screens: 4-20mA INTERFACE SETTINGS, 4-20mA VALUES,CONCENTRATION ALARM RELAY (LS2), and 4-20mA CALIBRATION. Refer to Analog Output Settings (Analogues)
Menu Options → .
Use the Up and Down Arrow buttons to navigate between input fields.

5.8.1

To enter editing mode

1.

Click OK to enter editing mode.

2.

Change the setting or value (one digit at a time) using the Up and Down Arrow buttons.

3.

Click OK again to save editing changes.

5.8.2
1.

To exit editing mode

Click Menu to cancel and exit editing mode.
CAUTION All changes will be applied after the next measurement period.

5.9

Measurement menu options

Selecting Measurement from the MAIN MENU will open the SIMPLE screen. The DETAILS or GRAPH screens can beselected from the SIMPLE screen.

5.9.1

Simple screen

This screen displays the oxygen and temperature values from the moment the measurement was started. Refer toFigure 26.

A0052894

Figure 26. Simple measurement screen

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27

Operating Instructions

OXY5500 gas analyzer

If the measurement temperature was set manually, the temperature value is already shown before starting themeasurement.
NOTICE In manual mode, the temperature unit can be changed. Values ranging from -99 °C to 199 °C can be input into
the MEAS. SETTINGS window. Refer to Temperature compensation → .
If automatic temperature measurement is selected and the temperature sensor is not connected or not working
properly, the display will show an error message. Refer to Figure 27.

A0052895

Figure 27. Temperature sensor error message

If no sensor is connected or is not connected properly, and the signal cannot be read when measurements are started,
an error message will be displayed in the status bar as shown in Figure 28.

A0052896

Figure 28. Error message - Sensor cannot be detected

The oxygen values are displayed in the following units:•

For OP-3 sensor: %O2•

For OP-6 sensor: %O2, ppmv•

For OP-9 sensor: ppmv

1.

Click the Up and Down Arrow buttons to change the oxygen unit on the display. The last measurement value
shown in the respective oxygen unit immediately. Choose one of the following options:
o

2.

o

Click the Right Arrow to display the detailed measurement screen. Refer to Details screen → .
Click the Left Arrow to display the measurement graph. Refer to Graph screen → .

Click Menu to return to the MAIN MENU screen.

5.9.2

Details screen

The DETAILS screen gives additional information about measurement and measurement settings. Refer to Figure 29.

28

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OXY5500 gas analyzer

Operating Instructions

A0052897

Figure 29. Details measurement screen

This screen is sectioned into boxes containing information on Oxygen, Temperature, Measurement Name, andGeneral.
•Oxygen: This box displays the last measured value in the selected oxygen unit. It also shows the phase angle andamplitude values. Change the oxygen unit by clicking the button.

•

Temperature: In this box, the current, last measured or manually set temperature value is displayed in theselected temperature unit.
NOTICE The temperature unit can be changed in Manual mode. Values ranging from -99 °C to 199 °C can be input into
the MEAS. SETTINGS window. Refer to Temperature compensation → .
•

Measurement Name: This box displays the selected measurement file in which all data is stored when logging isturned on.
NOTICE The measurement file can be changed in the MEAS. SETTINGS menu. Refer to Logging and data management →.
•General: Here the Sensor type of the currently connected oxygen sensor is displayed.
o

The currently measured or manually set Pressure value is also displayed in the General box. For automatic
measurement, the display will show the interpreted pressure value from the 4-20mA input. If no pressure
sensor is connected, the display will read 1013 mbar.

oIn the lower right of the General box, the time Interval at which the measurements are taken is displayed.

oNext provides the time period (the countdown during a running measurement) until the next measurement.

oError Codes are also displayed under the General box. Error codes are also logged together withmeasurement data. During error-free measurements, a 0 value will display.

o

The RATA is displayed at the bottom of the screen.

•

Click the Left Arrow to return to Simple view.

•

Click the Right Arrow to display the measurement graph. Clicking the button will switch to the graphicalpresentation of the current measurements. Refer to Graph screen → .

•

Click Menu to return to the MAIN MENU screen.

5.9.3

Error codes

The error code is a bit combination of multiple errors. The table shows a list of error bits. Some examples of error
codes are shown below:•

Error code: 1 = No RTD (Pt100) (bit O)•

Error code: 5 = No RTD (Pt100) and amplitude too low (bit 0 [2N Value 1], bit 2 [2N Value 4)=5)•

Error code: 1024 = No pressure sensor connected (bit 10)•

Error code: 1029 = No RTD (Pt100), amplitude too low, no pressure sensor connected (bit 0 [2N Value 1], bit 2[2N Value 4], bit 10 [2N Value 1024] = 1029)

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Operating Instructions

OXY5500 gas analyzer

Bit

2N Value

Error

0

1

No RTD (Pt100)

1

2

No sensor selected2

4

Amplitude too low

38

SD card defect4

16

Reference amplitude out of range

532

Photo diode saturated

664

Signal overflow

7

128

Signal overflow

8256

Reserved

9512

Critical error. Refer to Service → .

10

1024

No pressure sensor / pressure sensor out of range

11

2048

Reserved

124096

Storage space full
Table 3. Error codes

5.9.4

Graph screen

The oxygen values of the current measurement session are displayed in a graph; the last measurement value of theCurrent Measurement is shown at the top of the screen. Refer to Figure 30.

A0052898

Figure 30. Graph screen

In the lower right area of the screen, the number of measurement points of the total number of measurement points
are displayed in the graph. In the lower left of the screen, a progress bar shows the progress of the data being
analyzed.
NOTICE When large measurement files are being opened, a pop-up window will display stating, “You are about to open avery large file.” and requesting confirmation before proceeding. Select No to return to the currently selected
measurement graph or Yes to show the last 248 measurement points of the currently selected measurement file.
When logging is not activated, only the currently measured oxygen values are displayed, starting at the time the
GRAPH screen is opened.
1.

Click the Up and Down Arrows to open the Y-Axis Setup window where the minimum and maximum values for
the Y-Axis are set.

2.

Select Autoscale or Manual setting of the maximum or minimum values displayed on the Y-Axis. Refer to Figure
31. Autoscale will automatically set the maximum and minimum values according to the preset measurement
values.

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OXY5500 gas analyzer

Operating Instructions

CAUTION Measurement values outside the set display range will be shown as maximum or minimum values.
oClick the Left Arrow to return to DETAILS view.

A0052899

Figure 31. Y-Axis setup: Autoscale, ...and Manual setting•

Click the Right Arrow to return to SIMPLE view.

•

Click Menu to return to the MAIN MENU screen.

5.10

Measurement settings (Meas. settings) menu options

After selecting Meas. Settings from the MAIN MENU, the MEASUREMENT SETTINGS window displays. The analyzer
temperature compensation, pressure compensation, interval, and logging and data management options areaccessed from this screen.

5.10.1 Temperature compensation
On the MEASUREMENT SETTINGS screen, use the Navigation buttons to move to the Temperature box. Refer toFigure 32.

A0052900

Figure 32. Measurement settings screen - Temperature compensation

With Auto selected, the measurement temperature is determined by the RTD (Pt100) sensor.
NOTICE Automatically measured temperature values can be displayed in °C, °F, or K.

5.10.2 Setting the temperature compensation
1.

Change the settings to the desired unit of measurement in the lower right corner of the Temperature box. Figure
32 shows the temperature set at 22.0 °C.

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31Operating Instructions

OXY5500 gas analyzer

OR
Select Manual if the temperature during measurement at the oxygen sensor is known and constant throughout
the measurement.
CAUTION Manual setting is only required if the temperature probe is not functioning properly. Refer to Service →  before
using the Manual setting.
NOTICE Temperature values can be input in °C, °F, or K, in a range from -99 °C to 199 °C. Values will automatically berecalculated in the respective unit.
2.

Switch to the desired temperature unit and change the temperature value in the input field to the measurement
temperature.

5.10.3 Pressure compensation
On the MEASUREMENT SETTINGS screen, use the Navigation buttons to move to the Pressure box. Refer to Figure
33.

A0052901

Figure 33. Measurement settings screen - Pressure compensation

If the OXY5500 was purchased with a pressure sensor, the analyzer will be configured to use the pressure sensor
from the factory. If the pressure sensor is purchased separately, refer to the following steps for configuring thepressure sensor.

5.10.4 Setting the pressure compensation1.

Select the pressure compensation mode. Click on 4-20mA for the atmospheric pressure to be measured with aconnected pressure sensor. These values will be used for pressure compensation.

2.

Connect a pressure sensor to the analyzer. The display will show the interpreted pressure value from the 420mA input. Refer to Calibrating the input → .
NOTICE If no pressure sensor is connected, the display will read 1013 mbar.
OR
1.

Select Manual if the atmospheric pressure during measurement is known.
NOTICE Pressure values can be input in hPa, mbar, PSI, atm, or torr.
2.

Switch to the desired pressure unit and change the pressure value in the input field.

5.10.5 Interval
On the MEASUREMENT SETTINGS screen, use the Navigation buttons to move to the Interval box and select themeasurement mode. Refer to Figure 34.
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Operating Instructions

A0052902

Figure 34. Measurement settings screen - Select time interval

5.10.6 Setting the interval
1.

Select Single Scan to initiate one single measurement scan.

2.

Select Interval to set a certain time interval for the measurement to be taken.

3.

Insert the hours, minutes, and seconds for the interval at which measurements scans are taken.
NOTICE The recommended default interval value is “30 s” (30 seconds). The fastest possible interval for OP-3 is “1 s”.
For OP-6 and OP-9, it is “3 s”.
CAUTION Interval values set to less than 30 seconds can reduce the lifespan of the probe. Please refer to Signal drift due tophoto decomposition →  for more information.
The Interval sampling rate determines the frequency for the sensor calibration. For example, a sensor with an
Interval sampling rate of 30 seconds would produce 100,000 measurement points at 34.7 days. Endress+Hauser
recommends 35 days as a starting point for re-calibration or as the application requires it. Refer to The table below
and Calibrating the analyzer → .
Sampling Rate

PointsCalibration Frequency (Days)

30 seconds

100,000

34.7

1 minute

100,000

69.4

1 hour100,000

4,166

10 hours

100,000

41,666
Table 4. Interval sampling rate/calibration frequency

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Operating Instructions

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5.10.7 Logging and data management
On the MEASUREMENT SETTINGS screen, use the Navigation buttons to move to the Logging box. Refer to Figure
35.

A0052903

Figure 35. Measurement settings screen - Logging
NOTICE In the Status bar, the symbol indicates Logging is turned off.
•

Select Off if you do not want to store measurement data.

•

Select On to store measurement data.

The screen will switch to the Measurement Browser automatically. A list will display showing the Measurement file
name, the number of measurement Points stored in the respective file and the date the file was Last Used. Refer toFigure 36.

A0052904

Figure 36. Measurement browser - List of measurement files•

Use the Up and Down Arrow buttons to navigate up or down the list.

•

Click OK to select the highlighted file. The new measurement data will be added to the existing file. The display
will switch back to the measurement settings automatically.
NOTICE In Figure 36, the Monitor symbol in the Status bar shows that Logging is turned on and measurement data aregoing to be stored.
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Operating Instructions

Click the Left Arrow to delete the highlighted measurement file from the list. A window will display with thequestion, “Really delete this measurement?” Select Yes and the highlighted measurement field will be deleted.
NOTICE The currently activated measurement file cannot be deleted. To delete, first select another measurement file,then return to deleting the measurement file to be removed. The default measurement cannot be deleted.
Click the Right Arrow to create a new measurement file. A keyboard screen displays to enter the new measurement
file name. Refer to Figure 37.

A0052905

Figure 37. Keyboard screen to enter measurement name•

Use the Arrow buttons to move across the keyboard and the OK button to select the respective letter or number.
The new measurement name will show in the highlighted box at the bottom of the screen.
NOTICE

 To return to the measurement file list without creating a new file, click Menu.
•

Finish typing the file name, click Done and OK. The new measurement file will display in the file list.

•

To select a newly created measurement file for data storage, click OK a second time. The screen will switch backto the measurement settings automatically.

•

Click Menu to save the changes and return to the MAIN MENU screen.

5.11

Device settings menu options

Click Device Settings on the MAIN MENU to access the DEVICE SETTINGS menu, the SENSOR DETAILS screen and
the ABOUT screen.

5.11.1 Device settings screen
This screen is used to change the general settings of the OXY5500. Refer to Figure 38. Date, Time, LED Intensity(User Signal Intensity), and Forced Zero settings are saved with every measurement in the respective measurement
file.

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A0052906

Figure 38. Device settings screen
CAUTION If the power supply to the analyzer is disabled, Time and Date settings will be set to zero. Reset Time and Date
before starting a new measurement so that the correct time is stored with the data.
•

Time: Set the current time in hour (h), minute (m), and seconds (s). The OXY5500 uses 24-hour time settings.

•

Date: Set the current date in day (d), month (m), and year (y).

•LED Intensity/User Signal Intensity: Adjusts the signal strength of the probe. The LED Intensity (also called
User Signal Intensity) setting range is from -5 to 5, with 5 as the highest probe intensity and -5 the lowest probe
intensity. The default value is 0.

5.11.2 Setting the forced zero mode
1.

Click the Forced Zero mode field to view the drop down menu.

1

A0052907

Figure 39. Forced zero mode (1)2.

Select one of the forced zero modes shown in the table.
Forced Zero Settings

Negative Oxygen Value
Display

Alarm Signal “Forced Zero is
Active”

Forced Zero Active After
Reset

Passive

yes

no

no

Activenono

no

Active with alarm

no

yes

no

Active stored (default setting)

no

no

yes

Active with alarm stored

no

yes

yes

Table 5. Forced zero modes

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Operating Instructions

5.11.3 Forced Zero mode definitions•

Passive mode: Forced zero option is inactivated and negative measurement readings are shown.

•

Active mode: In this mode, a negative value will be seen as 0% [ppm] O2. After rebooting the device, the default
mode “passive” is reactivated.

•

Active alarm: In this mode, a negative value will be seen as 0% [ppm] O2. An alarm signal “Forced Zero isactive” is displayed at the top of the window. Refer to Figure 40. After rebooting the device, the default mode“passive” is reactivated.

•

Active stored: In this mode, a negative value will be seen as 0% [ppm] O2. No alarm signal is displayed when theoxygen concentration reading is negative. After rebooting the device, this mode remains active.

•

Active with alarm stored: In this mode, a negative value will be seen as a 0% [ppm] O2. This mode combines
the functionality of modes “active alarm” and “active stored”. After rebooting this device, this mode remains
active.
Alarm Signal

A0052908

Figure 40. Forced Zero alarm signal
CAUTION The OXY5500 requires regular calibration as discussed in Calibrating the analyzer → . Negative oxygen values
which may be due to an inaccurate calibration are not displayed when Forced Zero is active.
NOTICE Once the Forced Zero feature is active, the reading as described above applies to the main measurement screen
and to the analog 4-20 mA output. Negative oxygen values are output as 4 mA.

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5.11.4 About screen
The ABOUT screen provides the Serial Number, LED Status, and Firmware Version of the OXY5500. Refer to Figure
41.

A0052909

Figure 41. About screen
CAUTION Make sure to have the analyzer information found in the ABOUT screen before contacting Service → .

5.11.5 Sensor details screen
Information about the currently selected sensor is available through the SENSOR DETAILS screen. Refer to Figure 42.
The sensor type is displayed at the top of the screen. Below, all calibration data and sensor constants are shown.

A0052910

Figure 42. Sensor details screen

5.12

Sensor menu options

The option to change parameters, sensor type, or to calibrate the analyzer are accessed via the Sensor button on the
MAIN MENU.

5.12.1 Change parameters
Clicking the Change Parameters button in the SENSOR menu causes a message window to display with the question
to abort the currently running measurement. Refer to Figure 43.

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Operating Instructions

A0052911

Figure 43. Message window - Stop measurements during configurations

Select Yes to stop the measurement in order to display the SENSOR TYPE AND SENSOR CONSTANTS window. Refer
to Figure 44.

A0052912

Figure 44. Sensor type and sensor constants - Sensor type menu selected for editing

Use the Arrow buttons to navigate between input fields.

5.12.2 To enter editing mode
1.

Click OK to edit the highlighted field.

2.

Change the setting or value (one digit at a time) by pressing the Up and Down Arrow buttons.

3.

Make the desired change to an input field.

4.

Click OK again to save the changes.

5.12.3 To exit editing mode
1.

Click Menu to cancel and exit.

5.12.4 Changing the sensor type
If it is necessary to change the probe type in the field, change the sensor type (OP-3, OP-6, or OP-9) according to thesensor that is connected to the analyzer. The displayed sensor constants (dKSV1, dKSV2, dPhi1, dPhi2, f1, and m)
will change according to the sensor type selected.
NOTICE The sensor constant values can also be located on the Calibration Certificate delivered with the optical oxygen
sensor. Refer to the example in Figure 45.

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Figure 45. Calibration certificate example: Calibration data and sensor constants

A0052913

5.12.5 To manually change the sensor constants values
1.

Select the desired field and click OK.

2.

Click Next in the upper right corner of the screen, then click OK.

The display will change to the CALIBRATION DATA screen. Refer to Figure 46. If a calibration was performed with apreviously connected sensor, the data from that calibration is shown.

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A0052914

Figure 46. Calibration data screen
NOTICE On the Calibration Certificate → , “T0” is shown under the Calibration Data section, Temperature column as
Cal0 and Cal2nd.
 On the Calibration Certificate, “pATM” is shown as “Atmospheric Pressure” under the Calibration Specifications
section during Cal0 and Cal2nd.

5.12.6 Calibration
Calibration pressure and temperature are set from the CALIBRATION SETTINGS and CALIBRATION TEMPERATURE
screens, as shown below.

5.12.7 Setting calibration pressure
Refer to Figure 47 for a view of the CALIBRATION SETTINGS screen. The following instructions provide setting
information.

A0052915

Figure 47. Calibration settings screen

Pressure:•

Select Auto to measure the atmospheric pressure via the 4-20mA input.

•

Select Manual if there is no pressure sensor connected to the analyzer. Type in the current atmospheric pressure
value and the respective unit (hPa, mbar, PSI, atm, or torr).

•

Click OK to save your changes.

Click Next at the top right of the screen followed by OK.

5.12.8 Setting calibration temperature
Use the following instructions to program the analyzer for the correct calibration temperature. Refer to Figure 48.

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OXY5500 gas analyzer

A0052916

Figure 48. Calibration temperature screen••

T0: Temperature at the first calibration point.
oSelect Auto to measure the temperature at the first calibration point with the RTD probe (Pt100 temperature
sensor).

o

Select Manual if the first calibration point is known and remains constant through the calibration process.
Temperature values can be input in °C, °F, or K. Switch to the desired temperature unit and change thetemperature value in the input field.

T2nd: Temperature at the second calibration point.
ooSelect Auto at the first calibration point for automatic temperature measurement.
Select Manual to insert the changes to the calibration temperature manually.

To proceed with the calibration, click Next at the top right of the screen followed by OK.
Before starting the measurement, the OXY5500 must be calibrated. Refer to Calibrating the analyzer → .

5.12.9 Calibrating the analyzer
Complete the calibration procedures in this section before starting the measurement. First, refer to the required
equipment and materials list in The table. Figure 49 shows an illustration of the components to be used for thecylinder regulator purge process.

5.12.10 Equipment and materials
Refer to The table for a list of the materials and other equipment recommended for best results in the calibration
process. Component locations are shown in Figure 49, Figure 50, and Figure 51.
Material/Equipment Specifications

Vendor; P/N (if available)

Notes

Nitrogen gas (Cal 0)

6.0 Research grade(99.9999%)

Airgas, Inc.; P/N NI ISP 300, or
equivalent

To be used for measurement ranges 0
to 100 ppmv and lower. Can also be
used for OP-6 or OP-3 probe.

Nitrogen gas (Cal 0)

5.0 High purity grade(99.999%)–

Use for calibration ranges greater than
100 ppmv. Can be used for OP-6, OP-3,
or OP-9 probe, or for OP-9 probe with
O2 concentrations >100 ppm

200 ppm O2 in N2 gas 200 ppm oxygen in(Cal 2nd)
nitrogen

Airgas, Inc.; P/N X02NI99P15A0122, To be used with probe OP-9
or equivalent

2% O2 in N2 gas (Cal
2nd)

Airgas, Inc.; P/N X02NI98C15A0614, To be used with probe OP-6
or equivalent

2% oxygen in nitrogen

21% O2 in N2 gas (Cal 20 to 21% oxygen from2nd)
ambient air

N/A

To be used with probe OP-3

Cylinder dual stage
pressure regulators

Genstar Technologies; R31BQK-DIKC580-00-DR, or equivalent

Used for N2, 200 ppm O2 in N2 and 2%
in O2 in N2 (quantity 2)

42

Type: High purity, dualstage, regular, stainlesssteel diaphragmEndress+Hauser

OXY5500 gas analyzer

Operating Instructions

Material/Equipment Specifications

Vendor; P/N (if available)

Notes

–

Used to connect the cylinders to the Cal
Port (minimize length between cylinder
and the OXY5500 cal port/inlet)

Stainless steel tubing

3 mm (1/8 in.) tube,
316L, electro-polished,seamlessThree-way ball valve

0.35 Cv, 1/4 in. TF,
Swagelok;
PTFE, 316SS
SS-42GXS4
or
SS-42GXS6MM
0.35 Cv, 6 mm TF, PTFE,
316SS

To be used to connect the N2 and O2
cylinders to the OXY5500 cal port/inlet(quantity 1)

Tube reducer

Stainless steel tube
Swagelok;
fitting, reducer, 1/8 in. x SS-200-R-4
1/4 in. tube OD
SS-6M0-R-3M
orStainless steel tube
fitting, reducer, 6 mm x
3 mm tube OD(quantity 2)

Port connector

1/4 TF, OD, 316SS
or
6 mm TF, OD, 316SS(quantity 2)

Swagelok;
SS-401-PC
SS-6M1-PC
Table 6. Calibration materials/equipment

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2
3
1
4
5
6

7

9

8

10

A0056248

Figure 49. General layout for cylinder and Endress+Hauser analyzer connections#

Description

1

Cylinder valve

2

Dual stage pressure regulator

3

Shut off valve

4

Stainless steel tubing

5

Three-way ball valve

6

Port 1

7

Port 28

To vent

9

Cal 0

10

Cal 2nd5.12.11 Calibration gas connections to the OXY5500 analyzer
Connecting the two calibration gas cylinders to a three-way valve will minimize the OXY5500 exposure to ambient
oxygen. This process will help reduce the calibration time of the analyzer. The instruction below are for analyzers
with and without integrated sample conditioning systems. If your analyzer sample conditioning system (SCS) was
produced outside the Endress+Hauser factory, contact the manufacturer for details relating to the SCS connections.
This arrangement is strongly recommended for low-range calibrations (0 to 100 ppmv and lower). Higher ranges
may be calibrated by connecting the N2 and the calibration gases one at a time without the three-way valve as shownin Figure 50.

5.12.12 Connecting the gas inlet for analyzers without the sample conditioning system
1.

Connect the three-way valve to a port connector.

2.

Connect the reducers to either side of the three-way valve.

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3.

Connect to the gas cylinder to the reducer on either side of the three-way valve using 3 mm (1/8 in.) stainlesssteel tubing.

4.

Connect the OXY5500 probe to the port connector.
1
4

2

5
3

6

Figure 50. Gas inlet connections without SCS#

Description

1

Three-way valve

2

Tubing to gas cylinder

3

Port connector

4

Tubing to gas cylinder

5

Reducers

6

OXY5500

5.12.13 Connecting the gas inlet for analyzers with Endress+Hauser’s sample conditioning
system (SCS)
1.

Attach the Port Connector to the Endress+Hauser analyzer SCS enclosure.

2.

Connect the three-way valve to the port connector.

3.

Connect the reducers to either side of the three-way valve.

4.

Connect to the gas cylinder to the reducer on either side of the three-way valve using 3 mm (1/8 in.) stainlesssteel tubing.
1
2
3

3

4
Figure 51. Gas inlet connections with SCS

Endress+Hauser#

Description

1

Three-way valve

2

Reducers

3

Tubing to gas cylinder

4

Port connector

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Operating Instructions

5.13

OXY5500 gas analyzer

Purging the cylinder pressure regulators and analyzer

1.

Install a pressure regulator to the nitrogen (N2) zero gas cylinder.

2.

Install a pressure regulator to the O2 calibration gas cylinder.

3.

Purge the pressure regulator starting with the O2 cylinder, then the N2 cylinder. Allow the gas to flow into theanalyzer to purge also.

4.

Close the pressure regulator outlet valve and open the cylinder valve. This will pressurize the primary andsecondary side of the two-stage regulator.

5.

Adjust the regulation pressure to 200 KPaG (30 PSIG).

6.

Close the cylinder valve and crack the dual stage pressure regulator outlet valve. Allow the gas to discharge until
both the primary and secondary regulator pressure gases approach zero.

7.

Close the dual stage pressure regulator outlet valve prior to releasing the last amount of gas pressure.

8.

Repeat steps 1 to 7 fifteen (15) times for each regulator.
NOTICE

 For best results, discharge the regulator as much as possible without releasing all of the pressure on each purge
cycle.
9.

Open the cylinder valve and ensure the regulator is set to 200 KPaG (30 PSIG).

10. Open the dual stage pressure regulator outlet valve fully. Ensure there are no restrictions on the sample returnthat may cause back pressure during the purge cycle.

5.13.1 Performing a manual calibration (calibration using sensor values)
If the sensor was not previously calibrated with the analyzer (e.g., sensor replacement), the calibration can be set bysimply entering the values from the Calibration Certificate provided with the analyzer, without the need forcalibration gases. Refer to the sample Calibration Certificate → . However, calibrating with gases is more accurate
because it accounts for variability in the specific installation. To calibrate with gas, refer to Performing a two-pointcalibration → .
1.

Change the values for Cal0, T0, Cal2nd, T2nd, and pATM according to the values shown in the Calibration
Certificate. Refer to Figure 52.

A0052918

Figure 52. Calibration data screen - Changing the pressure unit
NOTICE On the Calibration Certificate, “pATM” is shown as “Atmospheric Pressure” under Calibration Specifications
during Cal0 and Cal2nd.
2.

Change the O2-2nd value according to the value shown below the cal2nd column.
CAUTION

 Confirm that the correct unit for the O2-2nd and pATM values are selected.
3.

46

Click Save in the upper right of the screen to store the changes and complete the manual calibration of theanalyzer.
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Operating Instructions

The display will automatically change to the MEASUREMENT window. If another sensor type has been selected,
a message window will display stating that the sensor type change has reset RATA. Refer to Relative accuracy
test audit (RATA) → .

5.13.2 Performing a two-point calibration
To perform a two-point calibration with the connected oxygen sensor, begin by selecting the screens below. Whencompleted, continue with the procedure detailed in “Calibrating the analyzer” on page 53.

A0052919

Figure 53. Message window - Sensor type change resets RATA

1.

Select Calibration from the SENSOR OPTIONS window. Refer to Figure 54.

A0052920

Figure 54. Calibration button in the sensor options window

2.

Click OK.
A message window will display requesting a response to the following question, “Measurement active. Abort for
Configuration?” Refer to Figure 55.

A0052911

Figure 55. Message window - Stop measurements during configuration

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3.

OXY5500 gas analyzer

Select Yes to stop the measurement in order to move to the CALIBRATION windows. Use the Up and Down
Arrow buttons to navigate between input fields.

5.13.3 To enter editing mode
1.

Click OK.
Change the setting or value (one digit at a time) by clicking the Up and Down Arrow buttons.

o2.

Make the desired change to an input field.

oClick OK again to save the changes.

5.13.4 To exit editing mode
1.

Click Menu to cancel and exit.

5.13.5 Performing pre-calibration
1.

Connect the analyzer to a nitrogen (N2) bottle.

2.

Set the flow to 1.5 SLPM.

3.

Confirm settings for the specified probe being used.
CAUTION Settings specified in the calibration certificate must be used for probes. Refer to Calibration Certificate → .
4.

Allow nitrogen (N2) Cal 0 gas to flow through the system for 45 to 60 minutes to purge the system. Refer to The
table.

Item

OP-3

OP-6

OP-9

Cal 0

Calibration with oxygen-freeenvironment (e.g., nitrogen).

Calibration in oxygen-freeenvironment (nitrogen).

Calibration in oxygen-freeenvironment (99.9999% nitrogen).

Cal 2nd

Calibration value optimal at 20.9% Calibration value optimal between
O2 in N2 (or ambient air).
1% and 2% oxygen.

Storage Stability

2 years provided the sensor material is stored in the original packaging.

Calibration value optimal between
100 to 200 ppm O2 in N2.

Table 7. Calibration gas specifications

In the upper section of the main screen, the Present Values measured by the OXY5500 are displayed. Refer to Figure
56.

A0052921

Figure 56. Calibration screen

5.13.6 Setting the first calibration point Cal0
1.

Flow Cal0 gas to sensor for the first calibration point. Refer to The table for Cal 0 gas specifications.

2.

Click Start to the left of the Cal0 value.
The Status field will display the message ‘Wait - Stabilizing!’ Wait for the phase values to stabilize within ± 0.01°.

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CAUTION Disregard the “Ready to Set Value” message.
3.

Run zero gas until the phase is stable; within 0.01 (approximately 45 to 60 minutes).

4.

Move the Set button to the left of the Cal0 value and click OK.

5.13.7 Setting the second calibration point Cal2nd
1.

Flow Cal2nd gas to sensor for the second calibration point.

2.

In the O2-2nd field, type in the oxygen value (concentration unit) of the second calibration medium.

3.

Click Start next to the Cal2nd box.
The Status field will display the message, “Wait - Stabilizing!”. Wait for the phase values to stabilize within±.01°.
CAUTION Disregard the “Ready to Set Value” message.
4.

Click Start to the left of the Cal2nd value.

5.

Click OK.

5.13.8 Saving the calibration values
1.

Click Save at the upper right of the screen.

2.

Click OK to store the calibration data for the selected sensor.
The display will switch to the measurement screen automatically.

5.13.9 Relative accuracy test audit (RATA)
RATA is accessible from the RATA button on the SENSOR / SENSOR OPTIONS menu screen.

5.13.10 Setting RATA
1.

Select RATA in the SENSOR OPTIONS window. Refer to Figure 57.

A0052922

Figure 57. Sensor options screen

2.

Click OK to perform a Relative Accuracy Test Audit (RATA). This will open a message window with the question,“Measurement Active. Abort for calibration?” Refer to Figure 58.

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A0052911

Figure 58. Message window - Stop measurements for calibration3.

Select Yes and stop the measurement to move to the CALIBRATION screen.

4.

Use the Up and Down Arrow buttons to navigate between input fields.

5.13.11 To enter editing mode
1.

Click OK.

2.

Change the setting or value (one digit at a time) by clicking the Up and Down Arrow buttons.

3.

Make the desired change to an input field.

4.

Click OK again to save the changes.

5.13.12 To exit editing mode
1.

Click Menu to cancel and exit.

5.13.13 Setting the pressure for RATA calculation
After stopping the currently running measurement, the PRESSURE FOR RATA CALCULATION screen displays. Refer
to Figure 59.

A0052923

Figure 59. Pressure for RATA calculation••

Select Auto and the atmospheric pressure will be measured via the 4-20mA Input.
Select Manual if there is no pressure sensor connected to the analyzer.
oo50Type in the current atmospheric pressure value in the respective unit (hPa, mbar, PSI, atm, or torr).
Click OK to save changes.

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Operating Instructions

5.13.14 Setting the temperature for RATA calculation•

Select Auto to measure the temperature for RATA calculation with the RTD probe (Pt100 temperature sensor).

•

Select Manual if the temperature for RATA calculation is known. Temperature values can be input in °C, °F, or K.
oo

Switch to the desired temperature unit and change the temperature value in the input field.
Click OK to save changes.

Click Next at the top right of the screen followed by OK. The screens in Figure 60 will display.

Figure 60. Relative accuracy test audit (RATA) screen

A0052924

At the top of the screen, the currently measured Oxygen, Temperature, and Pressure values are displayed. Below this,the Old RATA Mult. value is shown.
NOTICE If RATA has not been changed, the display will read 1.000.

5.13.15 Setting RATA reference values
1.

Enter the reference oxygen value (oxygen concentration of certified test gas lead into the vessel with the oxygen
sensor or the oxygen value of a reference device) in the O2 Reference field (1) at the bottom of the screen.

2.

Click Start next to the New RATA Mult. field (2), as shown in the Status field, to display current sensor phasevalues. Wait while the sensor values stabilize until the Status field displays “Ready to Set Value!” (3).

3.

Click the Set button (4) next to the New RATA Mult. field and the new value will display.
The New RATA Mult. can also be set manually. Refer to Setting new RATA mult. manually → .

4.

Click Save at the upper right of the screen.

5.

Click OK.
The display will switch to the MEASUREMENT screen automatically.
NOTICE There is no automatic reset for RATA. This feature cannot be manually reset to ‘off’ (1).

5.13.16 Setting new RATA mult. manually1.

Navigate to the New RATA Mult. box and click OK.

2.

Use the Up and Down Arrow buttons to change the value (between 0.001 to 9.999) one digit at a time.

3.

Click OK again.

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5.14

OXY5500 gas analyzer

Digitals menu options

Set RS-232, RS-485, and TCP/IP configurations from the Digitals button on the MAIN MENU.

5.14.1 RS-232 settings
Use this screen to set the baud rate of the RS-232 channel. Refer to Figure 61.

A0052925

Figure 61. Digitals - RS-232 settings•

The Baudrate for the RS-232 channel can be set to 9600, 19200, 38400, 57600, or 115200.

•

The ID, which is used in the Modbus communication, can be set to any value between 1 and 32.

•

Parity can be set to Even, Odd, or None.
NOTICE Setting the Parity to “None” also sets the number of stop bits to two. Odd and Even settings will use one stop bit.
All settings are applied by clicking Save.

5.14.2 RS-485 settings
Use this screen to set the baud rate of the RS-485 channel. Refer to Figure 62.

A0052926

Figure 62. Digitals - RS-485 settings•

The Baudrate for the RS-485 channel can be set to 9600, 19200, 38400, 57600, or 115200.

•

The ID, which is used within the Modbus communication, can be set to any value between 1 and 32.

•

Parity can be set to Even, Odd, or None.
NOTICE Setting the Parity to “None” also sets the number of stop bits to two. Odd and Even settings will use one stop bit.
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Operating Instructions

All settings are applied by clicking Save.

5.14.3 TCP/IP settings
Use this screen to set TCP/IP. Refer to Figure 63.

A0052927

Figure 63. Digitals - TCP/IP settings•

If DHCP is selected, the IP and Subnet Mask will be assigned by the DHCP server and therefore are not editable.

•

If Static is selected, the IP and Subnet Mask must be entered manually. Contact your local Network
Administrator for assistance if input data needs to be confirmed.

•

Port specifies the network port under which the Modbus application takes place. The default value for most
Modbus applications is 502.

•

The ID, which is used with the Modbus communication, can be set to any value between 1 and 32.

All settings are applied by clicking Save.

5.15

Analog output settings (Analogues) menu options

From the MAIN MENU, click Analogues to access the 4-20mA INTERFACE SETTINGS, 4-20mA VALUES,CONCENTRATION ALARM RELAY (LS2), and 4-20mA CALIBRATION screens.

5.15.1 4-20mA interface settings
The 4-20mA INTERFACE SETTINGS can be accessed through the ANALOGUES menu. When accessed, the following
screen displays. Refer to Figure 64.

A0052929

Figure 64. Analogues - 4-20mA interface settings

The Output, Mode, and Error Trigger Level settings will be applied to the selected port, which includes Port1, Port2,
or the Input.
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The error trigger level defines the port output in the event that the analyzer goes into an error state. No timestamp
error (NTE) options exclude time stamp error caused by loss of power to the analyzer. This option is recommended
for installations with unpredictable power supply to the analyzer. The Output of Port1 or Port2 can be oxygen or
temperature.
The Input is always Pressure and cannot be changed.
The Mode of Port1 and Port2 can be set to one of the following:•

Off: No input reading or output writing.

•Linear: High and low value that has been set to correspond to 4mA and 20ma. Values between these twosettings will be calculated linearly. Values outside this range will initiate the error trigger level.

•

Bilinear: High, mid, and low value set to correspond to 4mA, 12mA, and 20mA respectively. This mode allows
higher resolution in a certain range. Refer to Figure 65 for an example.

Figure 65. Bilinear current output vs oxygen value

A0052930

The first example (gray line) in Figure 65 shows high resolution in a low oxygen environment. The second example(yellow line) shows a high resolution in high oxygen environment. This also shows the behavior for measurement
values that lie outside the value range (oxygen values over a maximum of 50 will be shown as 20mA).
In the event of any error, the Error Trigger Level (2mA or 22mA) will be applied to the currently selected port. For
the input, any value outside the 4-20mA range will be interpreted as “not valid”.

5.15.2 4-20mA values
In the 4-20mA VALUES screen, enter the values that correspond to 4mA, 12mA, or 20mA depending on thecurrently selected mode.
Modes that can be selected include:•

Off: No values can be entered. Refer to Figure 66.

•

Linear: The high and low value can be entered. Refer to Figure 67. The unit depends on the selected output andoxygen sensor. If the output is set to Temperature, the unit is always °C. Otherwise, the output depends on theoxygen sensor (the oxygen unit selected in the measurement screen will explicitly NOT be used):oOP-3: %O2oOP-9: ppmvoOP-6: %O2

The values will be used for calculating the output or input value on the next measurement.

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A0052931

Figure 66. Analogues - 4-20mA values for mode “Off”

A0052932

Figure 67. 4-20mA values for mode “Linear”•

Bilinear: The High Value, Mid Value, and Low Value can be entered. Refer to Figure 68. The units are the sameas those used in Linear mode. The values will be used for calculating the output or input value on the next
measurement.

A0052933

Figure 68. 4-20mA values for mode “Bilinear”

5.15.3 Concentration alarm relay
This screen is used to define the range of the concentration alarm relay (LS2). Refer to Figure 69. If the oxygen value
is outside this range, the relay will be switched with low impedance and will trigger an error. Select the Alarm Low
Level to enable or disable the setting.

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The unit depends on the currently selected oxygen sensor:•

OP-3: %O2•

OP-6: %O2•

OP-9: ppmv

A0052934

Figure 69. Analogues - Concentration alarm relay

5.15.4 4-20mA calibration
Use the 4-20mA CALIBRATION screen to calibrate the Output and Input. The analyzer is delivered in the calibrated
state but can be calibrated to other devices in your measurement system.
CAUTION Factory calibration will be lost if the analyzer is re-calibrated.

5.15.5 Calibrating the output
Use the following procedure to calibrate the work flow for either Output 1 or Output 2. Refer to Figure 70.
1.

Connect a current measurement device to the respective output. This will serve as the reference device.

2.

Set the 1st Point value to any low value, e.g., 4.00 mA. The value will be applied immediately.
Click Apply or enter another value.

3.

Read the current value shown on the reference device, e.g., 3.90 mA.
Use the +/- symbols in the Adjust column next to the 1st Point value to adjust the values accordingly.

4.

Set the 2nd Point value to any high value, e.g., 20.00 mA. The value will be applied immediately.
Click Apply or enter another value.

5.

Read the current value shown on the reference device, e.g., 19.54 mA.
Use the +/- symbols in the Adjust column next to the 2nd Point value to adjust the values accordingly.

Example: The analyzer shows a value of 19.54 mA and the value should be 20.00 mA. Click the button until thedesired value is registered.
6.

56

To test the calibration, apply some test points by selecting different percentage values, such as 0%, 25%, 50%,
75%, or 100%, which corresponds to 4mA, 8mA, 12mA, 16mA, and 20mA. Check the values with the reference
device. If satisfied with the calibration, click Save.

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Operating Instructions

A0052935

Figure 70. Analogues - 4-20mA calibration

5.15.6 Calibrating the input
The procedure for calibrating the input is similar to the output procedure noted above. Use the following steps tocalibrate the input. Refer to Figure 71.
1.

Apply a low current to the OXY5500.

2.

Enter this value in the Reference column in the 1st Point row.

3.

Click the Set button next to the 1st Point when the reading is steady. The last measured value will be displayedin the top row next to the selected port.
NOTICE

 This value is the uncalibrated value that will be used as the 1st Point calibration value.

A0052936

Figure 71. Analogues - 4-20mA input calibration

4.

Apply a higher value to the OXY5500.

5.

Enter this value in the Reference column in the 2nd Point row.

6.

Click Set next to the 2nd Point when the reading is steady.
NOTICE

 This value is the uncalibrated value that will be used as the 2nd Point calibration value.
7.

The row Test Point displays the calibrated value, which is used for calculating the pressure value. This value
should match the reference device value by less than 0.05mA.

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Operating Instructions

6

OXY5500 gas analyzer

Modbus communication

Modbus is a serial communications protocol published by Modicon in 1979 for use with its programmable logic
controllers (PLCs). It has become a de facto standard communications protocol in industry and is now the mostcommonly available means of connecting industrial electronic devices. Modbus is used extensively in lieu of othercommunications protocols because it is openly published and royalty-free, relatively easy to deploy, and capable ofmoving raw bits or words without placing many restrictions on vendors.
This chapter covers the protocols, formats, and register data used to communicate with the OXY5500.

6.1

Protocol definition

6.1.1

General specification

The following general specifications apply to the Modbus protocol:•

The protocol is Modbus RTU conform.

•

The protocol is a client-server arrangement with the host controller acting as the server and each individual
module as a client.

•

Each module on the bus needs to have a unique device ID (see register 4095).

•

The device has no command buffer, so the host must always wait until the command is processed.
ooRead commands need 10ms processing time over RS-232 and RS-485 and 300ms over LAN.
After a write process, certain time consuming tasks are started. After a write process, a fixed timeslot of
150ms over RS-232 and RS-485 and 300ms over LAN after the transmitted response should be kept.

•

RX Input Buffer is 256 bytes.

•

A CRC16 error checking method is implemented. Starting value is 0xFFFF and polynomial type is 0xA001.

•

Some registers are read only. When writing to those, a Modbus error 2 occurs (illegal data address). This also
happens when 4 registers should be written, but the last 2 are read-only. No register will be changed afterward.

•

All registers between 1023 and 5708 can be read, as there is no read-protection.

6.1.2

Function codes

Available public functions are•

3: Read Holding Registers•

4: Read Input Registers•

16: Write Multiple Registers

Please note that function codes 3 and 4 are fully interchangeable as they behave in the same way.
NOTICE Function code 16 may be used with broadcast (device ID = 0). Codes 3 and 4 may not be used with broadcast.

6.1.3

Data formats

6.1.3.1

Float

The Float refers to the floating point according to IEEE 754 (Single Precision). This format requires two registers
obtaining 32 bit where each register contains the high byte in its first bit.
For example, if the float value is 20.56 (int32), represented as 0x41A47AE1 (hexaint32), it is written in two
consecutive registers, where the first register is 3499. Therefore, the value must be transmitted in the following way:
Register

Value

Register 3499, high byte

0x7A

Register 3499, low byte

0xE1

Register 3500, high byte

0x41

Register 3500, low byte

0xA4

58

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OXY5500 gas analyzer

Operating Instructions
Table 8. Float values

6.1.3.2

Int32

All int32 values are 32 bit-wide integer values. The example given in the previous section applies here as well.
6.1.3.3

Character

The definition is as follows:
8 bit ASCII-Code table according to ISO-8859-1 (Latin-1 Western European)
NOTICE A register always holds exactly 2 characters. Unused bytes are filled with zeros (ASCII: 0x00).
6.1.3.4

BooleanBoolean registers are 16bit int32 registers with only 0 and 1 as allowed values.

6.1.4

Error response

The error response follows the Modbus definition, but only four exception codes are implemented:•

1 (Illegal function): An unsupported function code was used.

•

2 (Illegal data address): The requested register is either not available or write-protected.

•

3 (Illegal data value): The value could not be set. The value was out of range. The last correct value will be
restored.

•

6 (Slave device busy): This code appears when there is an “active” USB connection (communication via softwareis active).

6.1.5

Different communication channels

The OXY5500 has multiple ways to read and set its settings and measurement values:•

Modbus Communicationo•oRS-485
RS-232Ethernet•

USB Service Port•Via keypad and LCD

All options share the same fundamental memory. Changing the settings via one communication channel will alter
the expected result on another channel.
6.1.5.1

Recommendation

One channel should be used to set up the device completely. As the device will save every setting and allows
immediate checking of the results, it is recommended to do this via keypad and LCD and to use the other channels as
simple data-polling options.
NOTICE If there is a Service Software connected (via USB), the Modbus write command 16 (“Write multiple registers”)
will always return error code 6.

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Operating Instructions

6.1.6

OXY5500 gas analyzer

Holding registers

Refer to the table for table register definitions. When reviewing the table, it is important to remember:•

The register addresses referred to in the table show the first address of multiple addresses available per register(see “Size” column for number of addresses per register). Do not add or subtract “1” from the first address
register number as this could cause conflict with other register assignments.

•

The analyzer does not check for correct ranges. The host must ensure that valid numbers are used. Any wrong
value may lead to unexpected performance.

Register Name

AddressSize

Variable Type

Description

Write AccessFirmware Date

1023

8

Character

Firmware creation date, e.g., “2014-11-18\0\0”(November 18, 2014)

No

Firmware Version

1031

8

Character

Firmware version, e.g., ,,SSI v1.0.1.0287\0”No

Serial Number

1063

8

Character

Serial number, e.g., ,,SAAP0000000001\0\0”No

Oxygen Unit

2089

2

Int32

The oxygen unit that displays on the LCD of theanalyzer and also in measurement register 4909

Yes

Compensation
Temperature

2411

2

Float

Sets the compensation temperature.

Yes

Interval Rate

3499

2

Mixed

Sets the oxygen measurement interval rate andYesalso deactivates oxygen measurement. Range: 1 to359999 seconds.

Device ID RS-485

4095

2

Int32

Sets the device ID that is used in Modbus RTU
communication (range 1-32).

Yes

Device ID Minimum
RS-485

4097

2

Int32

Device ID Address Limit: MinimumNo

Device ID Maximum
RS-485

4099

2

Int32

Device ID Address Limit: Maximum

No

Baud rate RS-485

4101

2

Int32

Code for Baud rate where:
3 = 9600
4 = 19200
5 = 38400
6 = 57600
7 = 115200

Yes

Baud rate Minimum
RS-485

4103

2

Int32

Minimum code for baud rate

No

Baud rate Maximum 4105
RS-4852

Int32

Maximum code for baud rate

No

Parity RS-485

4107

2

Int32

Parity for the RS-485 output where:
0x00 = Even Parity
0x01 = Odd Parity
0x02 = No Parity

Yes

Device ID RS-232

4109

2

Int32

Sets the device ID used in the Modbus RTU
communication (range 1-32).

Yes

Device ID Minimum
RS-232

4111

2

Int32

Device ID Address Limit: MinimumNo

Device ID Maximum
RS-232

4113

2

Int32

Device ID Address Limit: Maximum

No

Baud Rate RS-232

4115

2

Int32

Code for baud rate where:
0x03 = 9600
0x04 = 19200
0x05 = 38400
0x06 = 57600
0x07 = 115200

Yes

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Register Name

Size

Variable Type

Description

Write Access

Baud Rate Minimum 4117
RS-2322

Int32

Minimum code for baud rate

No

Baud Rate Maximum 4119
RS-232

2

Int32

Maximum code for baud rate

No

Parity RS-232

4121

2

Int32

Parity for the RS-232 output where:
0x00 = Even Parity
0x01 = Odd Parity
0x02 = No Parity2Yes

4-20mA Port1
Output Interface

4359

2

Int32

Code for 4-20mA Port1 Output Mode where:
0x00 = Off
0x01 = Fixed
0x02 = Linear
0x04 = BilinearYes

4-20mA Port1
Output Channel

4363

2

Int32

Code for 4-20mA Port1 Output Interface where:
0x01 = Oxygen
0x20 = TemperatureYes

4-20mA Port1 Low
Value

4377

2

Float

The 4mA output value.

Yes

4-20mA Port1 Mid
Value

4379

2

Float

The 12mA output value, which is used in bilinear
mode only.

Yes

4-20mA Port1 High
Value

4381

2

Float

The 20mA output value.

Yes

4-20mA Port1 Fixed 4383
Value

2

Float

In fixed output mode, this value is applied to the
output. Unit is mA.

Yes

4-20mA Port1 Error 4389
Trigger Level Value

2

Int32

Output current in the event of an error, where:
0x00 = 22mA
0x01 = 2mA
0x03 = 22mA NTE
0x04 - 2mA NTE

Yes

4-20mA Port1
Calibration Values

4329

8

Float

2 calibration values for a low point and a highpoint (each with a reference value and device
output).

4-20mA Port2
Output Interface

4945

2

Int32

Code for 4-20mA Port1 Output Mode where:
0x00 = off
0x01 = fixed
0x02 = linear
0x04 = bilinearYes

4-20mA Port2
Output Channel

4949

2

Int32/

Code for 4-20mA Port1 Output Interface where:
0x01 = Oxygen
0x20 = TemperatureYes

4-20mA Port2 Low
Value

4963

2

Float

The 4mA output value.

Yes

4-20mA Port2 Mid
Value

4965

2

Float

The 12mA output value is only used in bilinear
mode.

Yes

4-20mA Port2 High
Value

4967

2

Float

The 20mA output value.

Yes

4-20mA Port2 Fixed 4969
Value

2

Float

In fixed output mode, this value is applied to the
output.

Yes

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Address

Operating Instructions

61

Operating Instructions

Register Name

Size

Variable Type

Description

Write Access

4-20mA Port2 Error 4975
Trigger Level Value

2

Int32

Output current in the event of an error, where:
0x00 = 22mA
0x01 = 2mA
0x03 = 22mA NTE
0x04 - 2mA NTE

Yes

4-20mA Port2
Calibration Values

4979

8

Float

Two calibration values for a low point and a highpoint, each with a reference value and device
output.

Yes

4-20mA Input
Interface

5633

2

Int32

This register is reserved for future use.

Yes

4-20mA Input
Channel

5637

2

Int32

Code for 4-20mA Port1 Output Interface where:
0x02 = Pressure.3

No

4-20mA Input Low
Value

5651

2

Float

The 4mA corresponding input value.

Yes

4-20mA Input Mid
Value

5653

2

Float

The 12mA input value is only used in bilinear
mode.

Yes

4-20mA Input High
Value

5655

2

Float

The 20mA input value.

Yes

4-20mA Input Fixed 5657
Value

2

Float

This register is reserved for future use.

Yes

4-20mA Input Error
Trigger Level Value

5663

2

Float

This register is reserved for future use.

Yes

4-20mA Input
Calibration Values

5667

8

Float

Two calibration values for a low and a high point,
each with reference value and device output.

Yes

Measurement
Values

4895

14

Mixed

Refer to Measurement values →  for details.

No

Sensor Constant f1

4911

2

Float

Sensor constant f1. Allowed range: 0.000 to 9.999 Yes

Sensor Constant
dPhi1

4913

2

Float

Sensor constant dPhi1. Allowed range: -9.99999
to +9.99999

Yes

Sensor Constant
dPhi2

4917

2

Float

Sensor constant dPhi2. Allowed range: -9.99999
to +9.99999

Yes

Sensor Constant
dKSV1

4919

2

Float

Sensor constant dKSV1. Allowed range: -9.99999
to +9.99999

Yes

Sensor constant
DKSV2

4921

2

Float

Sensor constant dKSV2. Allowed range: -9.99999
to +9.99999

Yes

Sensor Constant m

4923

2

Float

Sensor constant m. Allowed range: 0.00 to+999.99

Yes

Sensor Type

4925

2

Int32

Sensor Type where:
0x00 = OP-3
0x01 = OP-6
0x02 = OP-94

Yes

ManualTemperature
Compensation

5611

1

Boolean

Activates the temperature measurement of the
Pt100 sensor by setting and uses the manual
temperature value by deleting this Boolean
register. After writing this register, the manual
temperature value has to be set (register 2411).

Yes

Cal0

5521

2

Float

Calibration value: Phase shift of low oxygen
calibration point (Default: 59.9).

Yes

T0

5523

2

Float

Calibration value: Temperate at the low oxygen
calibration point in °C (Default: 20.0).

Yes

62

Address

OXY5500 gas analyzer

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OXY5500 gas analyzer

Operating Instructions

Register Name

AddressSize

Variable Type

Description

Write Access

O2-2nd

5527

2

Float

Calibration value: Oxygen concentration of theYeshigh oxygen calibration point in the unit defined inregister 5535 (O2-2nd Unit).

Cal-2nd

5529

2

Float

Calibration value: Phase shift of high oxygen
calibration point (Default: 26.3).

Yes

T2nd

5531

2

Float

Calibration value: Temperature at the highcalibration point in °C.

Yes

pATM

5533

2

Float

Calibration value: Pressure at the high oxygen
calibration in mbar.

Yes

O2-2nd Unit

5535

2

Int32

The unit for the O2-2nd value, where:
0x4000.0000 = ppmv
0x0000.0010 = % O2

Yes

Ethernet Obtain IP
Mode

5675

2

Int32

Activates or deactivates DHCP. Entering “1” willobtain IP automatically.

Yes

Ethernet IP

5677

8

Int32

The Ethernet IP. Each pair of registers holds one
Yesoctet of the address. This register will only be used
if register 5675 is set to “0” (DHCP off).

Subnet Mask

5685

8

Int32

The Subnet Mask. Each pair of registers holds one
octet of the address. See “Ethernet subnet mask”
on page 5-18 for details. This register will only be
used if register 5675 is set to “0” (DCHP off).

Yes

Ethernet Port for
Modbus

5693

2

Int32

The Ethernet Port used in the Modbus Protocol.
(Default: 502)

Yes

Ethernet Modbus ID

5695

2

Int32

The Ethernet Modbus ID (range: 0 to 32).

Yes

Alarm Relay High
Level

5697

2

Float

The High Level which triggers the Level Alarm
Relay.

Yes

Alarm Relay Level
Low

5699

2

Float

The Low Level which triggers the Level Alarm
Relay.

Yes

Pressure Mode

5705

1

Boolean

Sets the measurement mode to either acquisition
via 4-20mA or fixed value where:
0x00 = fixed value
0x01 = 4-20mA

Yes

Measurement Mode 5707

2

Int32

This is a bit-coded register to configure themeasurement mode and to trigger themeasurement start.
Bit 0: Reserved.
Bit 1: Read only. Set when a measurement isalready active.
Bit 2: Will perform a single scan.

Yes

Set Concentration
Alarm Low Level

5709

2

Int32

Enables/disables the Low Level Alarm of theConcentration Alarm Relay:
0x00: Disable (Low Level is ignored)
0x01: Enable

Yes

LED Intensity

5711

2

Int32

The signal LED intensity. The allowed range is
0x00 (lowest) to 0x0A (highest)

Yes

Timestamp

8231

2

Int32

This is the current system time, defined as thenumber of seconds that have elapsed since
00:00:00, Thursday, 1 January 1970 (Unix time,
ISO8601). NOTE: Values below 1493050000 willlead to error code “illegal value”.

Yes

Table 9. Holding registers

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Operating Instructions

6.1.7

OXY5500 gas analyzer

Measurement control

Definition of register 5707
Start Register

Number of Registers

Reg3 / Reg4

Write Access

5707

2

Int32: Bit codes control register.

Yes

Table 10. Definition of register 5707

This register is used to activate interval measurement and also to trigger a measurement. It is bit-coded as shown in
the table.
Bit

Description

0Interval on/off (delete to turn off, set to turn on)

1
2

Status-Bit: Set when a measurement is currently performed. will be deleted after completing the measurement.
h b dStart measurement (single scan or continuous)

3 - 31

Reserved
Table 11. Measurement control register bit definition

6.1.8

Compensation temperatureThis value is used for compensation of the oxygen calculation.
Start Register

Number of Registers

Reg3 / Reg4

Write Access

2411

2

Float: Temperature value in °C

Yes

Table 12. Definition of register 2411

6.1.9

Measurement interval

The oxygen measurement interval can be set between 1 and 359999. Setting the interval to “0” will lead to Modbus
error response with code 3.
The measurement values may be read any time but are updated only with the interval set in these registers. Hence,
polling the measurement values in a higher rate than the measurement interval should be omitted as it leads tounnecessary traffic on the bus.
Start Register

Number of Registers

Reg3/Reg4

Write Access

3499

2

Int32: Interval value in seconds

Yes

Table 13. Definition of register 3499

6.1.10 Device ID RS-485, RS-232 and Ethernet
Sets the device ID used in the Modbus RTU communication. If a value over 32 is set, the device will reset its ID to 1,
which may lead to communication errors. If no ID is set, or the ID is not known, set the ID via broadcast (ID=0).
Start Register

Number of Registers

Reg3/Reg4

Write Access

4095

2

Int32: Device ID of RS-485. Minimum 1, Maximum 32

Yes

Table 14. Definition of register 4095

Start Register

Number of Registers

Reg3/Reg4

Write Access

4109

2

Int32: Device ID of RS-232. Minimum 1, Maximum 32.

Yes

Table 15. Definition of register 4109

Start Register

Number of Registers

Reg3/Reg4

Write Access

5695

2

Int32: Device ID of Ethernet. Minimum 1, Maximum 32.

Yes

Table 16. Definition of register 5695

64

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OXY5500 gas analyzer

Operating Instructions

6.1.11 Measurement values
Start Register # ofRegisters

Reg1/
Reg2

4895

Float:
Float:
Pressure in Reference
Amplitude
mbar
in mV

14

Reg3/
Reg4

Reg5/
Reg6

Reg7/
Reg8

Reg9/
Reg10

Float:
OxygenAmplitude
in mV

Float:
Float:
Temperatu
OxygenPhase shift re in °C
in degrees

Reg11/
Reg12

Reg13/
Reg14

Write
AccessFloat: Oxygen Int32: Error No
Value
Register.
defined inregister 2089

Table 17. Definition of register 4895
NOTICE

 It is not necessary to read out all 14 registers. For simple applications, reading out registers 9 to 14 (starting with
Register 4903) may be all that is required.
Bit

2N Value

Error

0

1

No RTD (Pt100)

1

2

No sensor selected2

4

Amplitude too low

38

SD card defect4

16

Reference amplitude out of range

532

Photo diode saturated

664

Signal overflow

7

128

Signal overflow

8256

Reserved

9512

Critical error.

10

1024

No pressure sensor / pressure sensor out of range

11

2048

Reserved

124096

Storage space full
Table 18. Error codes for the error register

6.1.12 4-20mA port1 calibration values
All values are transmitted in mA.
Start Register# of Registers

Reg1/Reg2

Reg3/Reg4

Reg5/Reg6

Reg7/Reg8

Write Access

4329

8

Float: Device
Value Low Point

Float: Reference
Value Low Point

Float: Device
Float: Reference Yes
Value High Point Value High Point

Table 19. Definition of register 4329

6.1.13 4-20mA port2 calibration values
All values are transmitted in mA.
Start Register# of Registers

Reg1/Reg2

Reg3/Reg4

Reg5/Reg6

Reg7/Reg8

Write Access

4979

8

Float: Device
Value Low Point

Float: Reference
Value Low Point

Float: Device
Float: Reference Yes
Value High Point Value High Point

Table 20. Definition of register 4979

6.1.14 4-20mA input calibration values
All values are transmitted in mA.
Start Register# of Registers

Reg1/Reg2

Reg3/Reg4

Reg5/Reg6

Reg7/Reg8

Write Access

5667

8

Float: Device
Value Low Point

Float: Reference
Value Low Point

Float: Device
Float: Reference Yes
Value High Point Value High Point

Table 21. Definition of register 5667

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Operating Instructions

OXY5500 gas analyzer

6.1.15 Analog input and output value ranges
The values that define the range of the analog outputs/inputs (Low, Mid, and High Values of Analog Port1 and 2,
and Analog Input) always use the units shown in the table.
OutputUnit

Sensor/Condition

Oxygen% O2

OP-3

Oxygen% O2/ppm gas

OP-6

Oxygenppm gasOP-9

Temperature°C

AlwaysPressure

Mbar

AlwaysTable 22. Oxygen units for various output, sensor, and measurement mode configuration
NOTICE Endress+Hauser recommends deactivating the current measurement before changing any settings. The device
will hold its last analog output value until the next measurement.

6.1.16 Ethernet IP
Start Register# of Registers

Reg1/Reg2

Reg3/Reg4

Reg5/Reg6

Reg7/Reg8

Write Access

5677

8

Int32: Ethernet
IP Octet 1

Int32: Ethernet
IP Octet 2

Int32: Ethernet
IP Octet 3

Int32: Ethernet
IP Octet 4

Yes

Table 23. Definition of register 5677

Example:Writing the following bytes:
0x 01 10 16 2D 00 08 10 00 C0 00 00 00 A8 00 00 00 01 00 00 00 0A 00 00 1F B1 will result in the IP 192.168.1.10
In detail:
0x 01

Slave address (int32 “01”)0x 10Function Code0x 16 2D

Starting Address (5677 in int32 representation)

0x 00 08

Quantity of registers

0x 00 C0 00 00 Octet 1 (int32 192)
0x 00 A8 00 00 Octet 2 (int32 168)0x 00 01 00 00 Octet 3 (int32 1)
0x 00 0A 00 00 Octet 4 (int32 10)
0x 1F B1

CRC16

6.1.17 Ethernet subnet mask
Start Register# of Registers

Reg1/Reg2

Reg3/Reg4

Reg5/Reg6

Reg7/Reg8

Write Access

5685

8

Int32: Ethernet
Subnet Mask
Octet 1

Int32: Ethernet
Subnet Mask
Octet 2

Int32: Ethernet
Subnet Mask
Octet 3

Int32: Ethernet
Subnet Mask
Octet 4

Yes

Table 24. Definition of register 5685

66

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OXY5500 gas analyzer

Operating Instructions

6.2

Examples6.2.1

Configuration of a continuous measurement

Precondition: Sensor is connected, and sensor constants and calibration values are already set up correctly (OP-9).
The goal for this configuration is a continuous measurement with a 1-minute interval with the pressure sensor and
RTD (Pt100) are deactivated. Instead, a manual fixed value will be transmitted. Refer to the table.
Step Description

Register(s)

Value

1

Stop the measurement, if it is running.

5707, 5708

0 (Int32)

2

Set pressure mode to “Manual”.

5705

0 (Boolean)

3

Set manual pressure to “1006.23”.

3147, 3148

1006.23 (Float)4

Set temperature mode to “Manual”.

5611

0 (Boolean)

5

Set manual temperature to “20.56”.

2409, 2410

20.56 (Float)

6

Set the interval rate to 1 min. (“60” seconds).

3499, 3500

60 (Int32)

7

Activate the interval mode and start the continuous measurement
immediately.

5707, 5708

5 (Int32 translates to00000101 binary)

8

Read measurement control register. If bit 1 is deleted, see step 9. If bit 5707, 5708
1 is set or the display has timed out, repeat step 7 until value shows ‘0’(max. 400 ms after which time-out detection should be implemented).

/

9

Read out the last measurement.

4895 to 4908

Refer to the table.

10

Read out the oxygen unit.

2089, 2090

1073741824 (Int32 translates
to 0x40000000 hex, meaning

Table 25. Configuration for a continuous measurement

Register
4895/4896

Register
4897/4898

Register
4899/4900

Register
4901/4902

Register
4903/4904

Register
4905/4906

Register
4907/4908

Float:
Pressure in
mbar

Float:
Reference
Amplitude mV

Float: Oxygen
Amplitude in mV

Float: Oxygen
Phase shift indegrees

Float:
Temperature
in °C

Float: Calculated
Oxygen Value in
unit

Int32: Error Register(refer to the table)

1006.23

10562.12 (Sensor 44.32 (Sensor
35000.00 (a20.56
value between and environment and environment
10 and 60000) dependent value) dependent value)

100 (Sensor and 0 (Error code.
Should be 0 if aenvironment
dependent value) sensor is connected)

Table 26. Reading measurement example

6.2.2
•

Configuration of an analog output

Precondition: Sensor is connected, and sensor constants and calibration values are already set up correctly (OP9). 4-20mA Output is already in a calibrated state.

The goal for this configuration is to set up the analog output 1 for a linear oxygen value output between 10 and 110
ppm gas, with an error level of 2mA.
Step

Description

Register(s)

Value

1

Deactivate the current measurement, otherwise the output may generate false values.

5707, 5708

0 (Int32)

2

Set the Mode to “linear”.

4359, 4360

2 (Int32)

3

Set the Output to “oxygen”.

4363, 4364

1 (Int32)

4

Set the Error Level to “2mA”.

4389, 4390

2 (Int32)

5

Set the Low Level to “10.00”.

4377, 4378

10.00 (Float)

6

Set the High Level to “110.00”.

4381, 4382

110.00 (Float)

Table 27. Configuration for an analog output

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OXY5500 gas analyzer

NOTICE The oxygen value does not have to be set. This is done automatically when setting the sensor type.

6.2.3
•

1-Point calibration of an OP-9 sensor

Precondition: Sensor is connected and put in a low oxygen environment. Sensor constants are already set
correctly (OP-9).

The goal for this example is to calibrate the oxygen sensor.
Step

Description

Register(s)

Value

1

Read the current measurement values.

4899 to 4908

Refer to the able.

2

Check to confirm there are no errors, especially error bits 1, 2, 4, 5, and 6. Referto the table. Proceed only when there are no errors present.

3

Set the calibration values cal0 and T0.

5521 to 5524

1st Float: 66.32
2nd Float: 21.98

Table 28. 1-Point calibration of a OP-9 sensor

Register 4899/4900

Register 4901/4902

Register 4903/4904

Float: Oxygen
Amplitude in mV

Float: Oxygen Phase
shift in degrees

Float: Temperature in °C Float: Calculated Oxygen
Value in unit

50592.62 (Sensor and66.32 (Sensor and
21.98
environment dependent environment dependent
value)
value)

Register 4905/4906

Register 4907/4908
Int32: Error Register.
Refer to the table.

This value can be ignored 0 (Error code. Should be
while calibration process 0 if a sensor istakes place.
connected)

Table 29. Measurement reading for calibration process example

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OXY5500 gas analyzer

7

Operating Instructions

Appendix A: Specifications

Application Data
Target Components

O2

Principle of Measurement

Fluorescent Quenching
OP-9

OP-6

OP-3

Typical Measurement Ranges

0 to 200 ppmv (default)
0-10 to 10-1,000 ppmv
User setting

0 to 5 %0-1 to 0-5 %User setting

0-20 %
0-10 to 0-20 %User setting

Lower Limit of Detection

0.5 ppmv

20 ppmv

300 ppmv

Accuracy at 20 to 25 °C±5% of Reading±3% of Reading±2% of Reading

Repeatability±1% of Reading

Measurement Update Time

Programmable Sampling Rate (default 30 seconds)

Temperature Range(Configurable)

1) 0 °C to 60 °C (0 °F to 140 °F)
2) -20 °C to 50 °C (-4 °F to 122 °F)

Sample Inlet Pressure

140 to 275 KPaG (20 to 40 PSIG) to sample panel regulator

Sample Pressure Range

800 to 1400 mbara

Maximum Probe Pressure

275 KPaG (40 PSIG)

Sample Flow Rate

Typical 1.0 SLPM (2.1 SCFH)

Recommended Calibration

Two-point calibration in oxygen-free environment (nitrogen) and a second span point(cylinder gas). Validate with O2 in N2 reference (cylinder gas).

Electrical & Communications
Input Power (Voltage and Max.
Power)

AC 108 to 253 V, 50/60 Hz; 5.3W at AC 120 V; 6.6W at AC 240 V or DC 9 to 30 V (CSA), 18
to DC 30 V (IEC/ATEX); 4.7 W at DC 24 V

Communication

 Analog: Qty 2) 4-20mA sourcing power outputs and (1) 4-20 mA input (sample pressure) Fieldbus: RS-232C, RS-485, Ethernet 10/100 with Modbus
 Output Relays: Qty (2) 250 mA max load (Concentration and Fault Alarms)
USB 2.0 works with Service Software only
4 GB Internal Memory with Internal Data Logging

LCD Display

Concentration, Temperature, Sample Rate, Data Logging, Diagnostics, plus Full Menu for
Setup, Calibration, etc.

Service Software Windows software.
 Connected via USB port.
 Download data logs, trend and monitor, calibrate and troubleshoot.

Physical
Enclosure TypeType 4X and IP66 rated, 304 and 316 (optional) Stainless Steel

Analyzer Dimensions

280 x 230 x 114 mm (11 x 9 x 4.5 in.) H X W x D (not including Sample Conditioning System)

Controller to Probe Cable Length

0.7 m (2.3 ft.) - Standard
2.5 m (8.2 ft.) and 5.0 m (16.4 ft.) - Optional

Weight

2.2 Kg (4.9 lbs) - analyzer without sample conditioning system
14 kg (31 lbs) - analyzer on a panel
35.4 (78 lbs) - analyzer in enclosure

Sample Probe Construction

316 Stainless SteelArea Classification - Certification

CSA: Class I, Div. 2, Groups A, B, C, and D, T3, NEMA 4X
ATEX/IECEx/UKEX:
II 3 G, Ex ec IIC T3 Gc IP66
NOTE: Certification applies to the analyzer only. The enclosure versions of this product areconsidered accessories for the product and not included as part of the certification.
Table 30. OXY5500 analyzer specifications

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OXY5500 gas analyzer

CAUTION Probe assemblies and other such equipment required for analyzer operation must meet with all manufacturer
specifications.

7.1•

Technical notes

ANALYZER ENCLOSURE: The enclosure and fittings are designed for IP66/Type 4X ratings. In order to maintainthis rating, all connections must be made with proper hardware and adhering to suggested procedures. Use ofincorrect materials can compromise the integrity of the environmental seals.
NOTICE

 For a complete listing of new or updated certificates, please visit the product page at www.endress.com.
273.05 (10.75)

1152.40
(6.0)
2

393.7
(15.5)

3

304.80 (12.0)

A0052937

Figure 72. Outline and mounting dimensions - panel mount. Dimensions: mm(in)70#

Description

1

Communication signal connections

2

Power connections

3

Conduit and armor routing (forillustrative purposes only)

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OXY5500 gas analyzer

Operating Instructions

ENCLOSURE DOORKEYPAD
EX2400000035

ENCLOSURE BODY
POWER WIRE CONNECTION
EX0800000020
TRANSMITTER MODULE

5

4

3

2

2

L1 N

+ + - -USE ONLY IN STANDARD
VERTICAL MOUNTINGORIENTATION WITH THE
INPUT TERMINALS ON
TOP OF THE UNIT

KEYPAD
CONNECTORRJ45MINI USB 2.0
ETHERNET PORTPROPRIETARY
TCI/IP MODBUSSERVICE

1

V1+

TB1 1
V2+

2

232
GND TX

3

5

GND

7

232
GND Rx GND

4 6

8

2

1

N

L1 GND

485(A+)

9

TB2 1 3 5 7 9 11 13 15485(B-)

10

2 4 6

NEC

L1 (H)BLK (WIRE 1)

N
WHT (WIRE 2)

GND
Y/G

ATEX

BRN (WIRE 1)

BLU (WIRE 2)

Y/G1

N L1 GND

8 10 12 14 16

AC POWER SUPPLY
EX4000000004(1 OF 2 POWER
CONDITIONINGOPTIONS)PANEL 0900002202

PRESS SENSOR
EX5500000001

FIBER OPTICCONNECTOR(SMA)

A0056266

Figure 73. Interconnect diagram (AC)ENCLOSURE DOORKEYPAD
EX2400000035

ENCLOSURE BODY
EX0800000020
TRANSMITTER MODULE

5

4

3

2

1

KEYPAD
CONNECTORRJ45MINI USB 2.0
ETHERNET PORTPROPRIETARY
TCI/IP MODBUSSERVICE232
V1+ GND TX

Tb1 1

3

5

GND

7

9

V2+

232
GND Rx
GND 485(B-)

2

4

6

8

+

TB2 1 3 5 7 9 11 13 15

10

2 4 6

8 10 12 14 16

DC POWER SUPPLY
EX4000000003(2 OF 2 POWER
CONDITIONINGOPTIONS)+-PANEL 0900002202

PRESS SENSOR
EX5500000001

FIBER OPTICCONNECTOR(SMA)-

485(A+)

A00556267

Figure 74. Interconnect diagram (DC)Endress+Hauser

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Operating Instructions

7.2

OXY5500 gas analyzer

Spare parts

Below is a list of spare parts for the OXY5500 Optical oxygen analyzer with recommended quantities for 2 years ofoperation. Not all parts listed are included on every analyzer. When ordering, please specify the system serial
number to ensure that the correct parts are identified.
Part Number

Description

2 YR QTYElectronics Assembly Components
70157019

Window, Enclosure−70157020

Window Gasket, Enclosure−

70175074

OXY5500 Display−

70175071

Replacement Kit, Transmitter, OXY5500−

EX4000000004

Power Supply, Module, AC 100-240 V to DC 24 V 1.3A

170157025

Power Supply, DC/DC Conv., 15W, 24V, DIN

170157026

Cartridge Fuse, 216 Series, 5 x 20mm, Fast Act 800 mA, 250V

170178487

Communication Board−

Optical Fiber Probes and Installation Accessories
70163999

Optical Fiber Assembly, OP-9 Sensor Probe, 1000ppm, 0.7 m, SMA

170164000

Optical Fiber Assembly, OP-9 Sensor Probe, 1000ppm, 2.5 m, SMA

170164001

Optical Fiber Assembly, OP-9 Sensor Probe, 1000ppm, 5.0 m, SMA

170164002

Optical Fiber Assembly, OP-6 Sensor Probe, 5%, 0.7 m, SMA

170164003

Optical Fiber Assembly, OP-6 Sensor Probe, 5%, 2.5 m, SMA

170164004

Optical Fiber Assembly, OP-6 Sensor Probe, 5%, 5.0 m, SMA

170164005

Optical Fiber Assembly, OP-3 Sensor Probe, 20%, 0.7 m, SMA

170164006

Optical Fiber Assembly, OP-3 Sensor Probe, 20%, 2.5 m, SMA

170164007

Optical Fiber Assembly, OP-3 Sensor Probe, 20%, 5.0 m, SMA

170164008

OXY5500 Fiber Probe Conduit Kit (all lengths) (includes all parts associated with fiber probe
installation)−

70157039

Front Ferrule, 4 mm, Teflon−

70157040

Back Ferrule, 4 mm, Teflon−

70157041

Tube Reducer, 4 mm TX 1/4 TSTUB, BT, SS−

Temperature Probes and Installation Accessories
70157042

RTD Probe, 100 W, 1/8 x 2, SS ARM, 40 in. LG−

70157043

RTD Probe, 100 W, 1/8 x 2, SS ARM, 10 in. LG−

70157044

Tube Reducer, 1/8 TX 1/4 TA, SS, Bored−

70164009

OXY5500 Temperature Sensor Kit (0.7 m) (includes temperature sensor and all parts
associated with installation)−

70164010

OXY5500 RTD Probe Kit (2.5 m, 5.0 m) (includes temperature sensor and all parts associatedwith installation)−

Pressure Transmitter and Installation Accessories
70157047

Pressure Transmitter

170157048

Male Connector, 1/4 TFX, 1/4 MNPT, 316SS−

70164011

OXY5500 Pressure Sensor Kit (includes pressure sensor and all parts associated withinstallation)−

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OXY5500 gas analyzer

Part Number

Operating Instructions

Description

2 YR QTY

BA02195C

OXY5500 Operating Instruction, additional copies−

BA02196C

OXY5500 Sample Conditioning System (SCS) Operating Instruction, additional copies−

XA02754COXY5500 Safety instruction, additional copies−

SD02868C

OXY5500 Service Software Operation Instruction, additional copies−

70157051

Cable, USB, 2.0A to Mini-B 5 Pin, 28/28 AW, 6 Ft.

−

GeneralTable 31. Replacement parts for OXY5500 analyzer

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8

OXY5500 gas analyzer

Appendix B: Maintenance and troubleshooting

The OXY5500 is a maintenance-free instrument, although some components may need cleaning or replacement.
This chapter contains instruction for cleaning, replacement, and general troubleshooting information.

8.1

Optical output

The SMA connector is a high precision optical component. For optimal performance, keep it dry and clean. Always
use the rubber cap to close the output when not in use.

8.2

Cleaning the instrument

The housing should be cleaned only with a moist cloth to avoid electro-static discharge.

8.2.1

SMA-fiber connector

The SMA-fiber connector of the sensor can be cleaned only with a lint-free cloth. The sensor tip may be rinsed onlywith distilled water or ethanol.
CAUTION Never use benzene, acetone, isopropyl alcohol, or other organic solvents to clean the sensor tip.

8.2.2

Oxygen probe

The sensor tip can be cleaned as needed. Use caution when using this cleaning procedure to avoid removing theprotective coating and causing possible damage.
Tools and materials•

Ethanol (or equivalent)•

Clean container•

Lint-free wipes
NOTICE

 This procedure applies to the OP-3, OP-6, and OP-9 probes.
CAUTION Never use benzene, acetone, isopropyl alcohol, or other organic solvents to clean the sensor tip.

8.2.3

Cleaning the oxygen probe

1.

Remove the probe from the analyzer. Refer to Removing the oxygen probe → .

2.

Pour enough ethanol into a clean container to cover the probe tip when submerged.

3.

Submerge probe tip into container with ethanol.
Leave the probe tip submerged for 5 to 30 minutes depending on amount of visible contaminant.

4.

Remove probe from container.

5.

Place lint-free wipe on flat surface and gently tap the probe tip against the wipe to remove excess liquid and any
contaminant residue.
Repeat steps 3 to 5 if contaminant is still visible on the probe tip.

6.

Replace oxygen probe in the analyzer. Refer to Installing the new oxygen probe → .

7.

Recalibrate analyzer. Refer to Calibrating the analyzer → .

8.3

Temperature probe lifespan

The temperature probe is estimated to last as long as the analyzer itself, therefore does not require replacement.

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8.4

Operating Instructions

Fuse replacement

Use the following instructions to replace a fuse. Refer to Figure 2 for the fuse location.

8.4.1

Replacing the fuse

1.

Turn off power to the analyzer and open the enclosure door using a standard flathead screwdriver to unlatch the
lock.

2.

Using a flat-head screwdriver (or comparable), remove the cover from the fuse enclosure. Refer to the figure.

1

2

A0052940

Figure 75. Removing the fuse cover#

Description

1

Fuse cover2

Fuse enclosure

3.

Lift the fuse cover off and turn it over. The fuse is held in the slot in the cover.

4.

Remove the fuse from the fuse cover. Refer to Figure 76.

A0052941

Figure 76. Removing the fuse

5.

Replace the expired fuse with a new fuse.

6.

Turn the fuse cover over (fuse side down) and place onto the fuse enclosure.

7.

Snap fuse cover onto fuse enclosure.
CAUTION Use only the same type and rating of fuse for replacements. Refer to the specifications listed in the table.
Description

RatingCartridge fuse, 216 Series, 5 x 20 mm, Fast Act

800 mA, 250 V
Table 32. Fuse specifications

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8.5

OXY5500 gas analyzer

Replacing the electro-optical module

Use the following procedure to replace and install the electro-optical module in the OXY5500 analyzer.
NOTICE Drawings shown in this instruction are used to provide a clearer illustration of the required steps only. DO NOTREMOVE the base plate from the analyzer enclosure to complete this instruction.

8.5.1

Required tools and hardware•

Flathead screwdriver•Philips screwdriver•

Electro-optical module (P/N EX0800000020)

8.5.2

Removing the electro-optical module

1.

Turn off power to the analyzer and open the enclosure door using a standard flathead screwdriver to unlatch the
lock.

2.

Disconnect the ribbon cable from the keypad and set aside.

3.

Disconnect the probes, power supply, and pressure sensor from the terminal blocks, as necessary. Refer to
Installation → .

4.

Insert a flathead screwdriver in the clip extension at the top of the electro-optical module as shown in Figure 77.

1A0052942

Figure 77. Inserting screwdriver into clip extension (1)5.

Press down on the corner of the electro-optical module and hold.

6.

With the screwdriver, press down on the clip extension and away from the top of the module. Refer to Figure 78.
The electro-optical module should pop up.

A0052943

Figure 78. Disconnecting the electro-optical module from the DIN rail

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Operating Instructions

7.

Tilt the electro-optical module forward and lift away from the DIN rail.

8.

Remove the ground cable from the module.
Using the Philips screwdriver, remove the screw and cable. Refer to Figure 79.

A0052944

Figure 79. Removing the ground cable

9.

Remove the electro-optical module from the enclosure and set aside.

8.5.3

Replacing the electro-optical module1.

Connect the ground cable to the replacement module.

2.

Position the electro-optical module above the DIN rail and snap down into place.

3.

Re-wire the terminal blocks as shown in Figure 73 or Figure 74.

4.

Re-connect the probe.

5.

Re-connect the ribbon cable to the keypad.

6.

Close the analyzer enclosure door.

8.6

Installing/replacing the pressure sensor

The pressure sensor is optional on the OXY5500 analyzer. Use this procedure to install or replace the pressure
sensor.
Refer to the procedure called Installing the pressure sensor →  and Spare parts →  for the pressure sensor kit partnumber to install this option.

8.6.1

Required tools•

Flathead screwdriver (standard size and mini)•

9/16 in. open-ended wrench•

Adjustable wrench•

10 in. crescent wrench

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Operating Instructions

8.6.2

OXY5500 gas analyzer

Removing the pressure sensor

1.

Turn off the power to the analyzer and open the enclosure door using a standard flathead screwdriver to unlatch
the lock.

2.

With a 9/16 in. wrench, loosen the Swagelok nut closest to the pressure sensor.

3.

Using the same wrench, loosen the Swagelok nut on the T-fitting. Refer to Figure 80.

12

Figure 80. Removing the Swagelok nuts

4.

#

Description

1

Pressure Sensor Nut

2

T-Fitting Nut

A0052945
A0052946

Remove the tubing between the pressure sensor and T-fitting. Refer to Figure 81.

Figure 81. Removing the tubing

A0052947

5.

Loosen both hinge screws from the OXY5500 analyzer enclosure and open the door.

6.

Disconnect the red and black wires labeled “psens-” and “psens+” from terminal block TB2 using the miniscrewdriver as shown in Figure 82.

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Operating Instructions

Figure 82. Removing the wiring

A0052948

7.

Hold the pressure sensor using the crescent wrench to secure the hex nut on the external end.

8.

Loosen the panel mount nut from the pressure sensor on the inside of the enclosure with the adjustable wrench.
Refer to Figure 83.

A0052949

Figure 83. Removing the pressure sensor

9.

Remove the panel nut with fingers and extract the pressure sensor from the enclosure. Leave the green sealing
washer in place.

8.6.3

Installing the pressure sensor

1.

Remove the new pressure sensor from the bag and insert into the opening with the green sealing washer withthe same orientation as the one removed.

2.

Secure the panel nut to the top of the pressure sensor inside the OXY5500 enclosure.
Tighten the panel nut sufficiently to avoid possible leaks from entering the analyzer enclosure.

3.

Connect the pressure sensor wiring as shown in Figure 73 or Figure 74.

4.

Close the OXY5500 enclosure door and secure with the hinge screws.

5.

Connect the pressure sensor tubing to the pressure sensor using the Swagelok nut.

6.

Connect the tubing to the T-fitting using the Swagelok nut.

7.

Tighten the Swagelok nuts at both ends of the tubing until tubing is secure.

8.

Close the SCS enclosure cover.

8.7

Removing and replacing the oxygen probe

Use the following instructions to remove and replace an oxygen probe on the OXY5500.

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Operating Instructions

8.7.1
•

OXY5500 gas analyzer

Tools/parts

OXY5500 replacement oxygen probe
Refer to Spare parts →  for a complete list of replaceable probe parts and part numbers.

•

Adjustable Crescent wrench•

Philips screwdriver•

5/32 in. Hex driver•

7/16 in. Open-end wrench•

1/2 in. Open-end wrench

8.7.2

Removing the oxygen probe

1.

Purge the analyzer by allowing 99.9999% pure nitrogen flow through the system for 30 minutes.

2.

Shut off gas flow to the analyzer.

3.

Turn off power to the analyzer.

4.

Loosen the enclosure screws and remove the clamps to open the enclosure door.

5.

Using an adjustable wrench, loosen the cable gland cap on the panel by turning “up” toward the analyzer. Do notremove cable gland cap. Refer to Figure 84.

Figure 84. Loosen the cable gland cap

A0052950

6. Remove the tube nut on the panel using a 1/2 in. open-end wrench turning “down” away from the analyzer.

Refer to Figure 85.

A0052951

Figure 85. Remove tube nut

7.

80

Remove the conduit bracket screws (x2) with a 5/32 in. Hex driver. Refer to Figure 86.

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OXY5500 gas analyzer

Operating Instructions

A0052952

Figure 86. Remove conduit bracket

8.

Remove the conduit clamp screw with a Philips screwdriver. Refer to Figure 87.

A0052953

Figure 87. Remove conduit clamp

9.

Turn the conduit bracket parallel to the panel and carefully disengage the probe from the Tee union (panel side).
Refer to Figure 88.
CAUTION Take care not to disturb the temperature probe while removing the oxygen probe conduit.

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OXY5500 gas analyzer

A0052954

Figure 88. Remove probe from tee union (panel side)

10. Extend the probe conduit away from the panel and remove the fittings from the probe tip (panel side). Refer toFigure 89.

1

2

3

4

A0052955

Figure 89. Fittings on oxygen probe (panel side)#

Description

1

Plastic Ferrule2

Cable Gland Cap

3

Tube Nut

4

Cable GlandCAUTION Take care to safely set aside the tube nut, cable gland cap, and plastic ferrules for use with the replacement probe.
11. Loosen the connector nut on the probe at the SMA connector inside the analyzer enclosure. Refer to Figure 90.

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Operating Instructions

1

2

A0052956

Figure 90. Remove connector nut (analyzer side)#

Description

1

Oxygen Probe and SMA Connector Nut

2

Tee Union

12. Carefully pull the probe out through the conduit and discard.

8.7.3
1.

Installing the new oxygen probe

Carefully remove the protective plunger from the end of the probe (analyzer side), taking care not to touch theoptical fiber tip. Refer to Figure 91.

1

Figure 91. Preparing the new oxygen probe with the fiber optic tip (1)2.

A0052957
A0052958

Feed the new probe through the conduit with the SMA connector end entering first.
CAUTION Touching the optical fiber tip will cause damage to the probe.
3.

Insert the probe tip into the SMA connector and tighten the connector nut. Refer to Figure 91.
CAUTION Take care not to bump the probe tip against the sides of the opening or damage will occur.
4.

Remove the red safety cap from the probe tip (panel side). Refer to Figure 92.

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Operating Instructions

OXY5500 gas analyzer

A0052959

Figure 92. Remove probe safety cap (analyzer side)

5.

Re-install fittings onto probe tip (panel side).
CAUTION

 Ensure plastic ferrules are properly installed.
6.

Route conduit so that probe end (panel side) is aligned with the Tee union.

7.

Insert the probe tip (panel side) into the Tee union.

8.

Connect the conduit bracket with screws (x2) using a 5/32 in. Hex driver.

9.

Connect the conduit clamp with screw using a Philips screwdriver.

10. Tighten the tube nut on the probe tip (panel side).
11. Secure the cable gland cap with the adjustable wrench.
CAUTION Do not overtighten the cable gland cap.
12. Close the analyzer enclosure cover and secure with clamps.
13. Perform a leak test on the analyzer. Refer to Service → .
14. Calibrate the analyzer. Refer to Calibrating the analyzer → .

8.8

Correcting error codes

If a signal overflow error is received, follow the steps below to resolve the error.

8.8.1

High signal strength: Low O2 or no O2 on OP-3, OP-6, or OP-9 probe

1.

Decrease the LED intensity of the O2 probe by single increments.

2.

Refer to Device settings screen →  for more information on LED Intensity settings.

8.8.2

Low signal strength: High O2 on OP-3, OP-6, or OP-9 probe

1.

Increase the LED intensity of the O2 probe by single increments.

2.

Refer to Device settings screen for more information on LED Intensity settings.

8.9

Recommendations for correct measurement

Calibration of the sensor is recommended before each new application. As an alternative, the calibration values ofthe last measurement can be used. If temperature compensation is not used, ensure that the temperature of thesample is known and is constant during measurement. With temperature compensated measurements, thetemperature sensor Pt100 (RTD probe) should be positioned as close as possible to the oxygen sensor to avoid
temperature differences.

8.9.1

Signal drifts due to oxygen gradients

It is important to remember that the sensor only measures the oxygen content near its surface. The formation of abio-film during long-term measurements, or the accumulation of other sample components like oil or solid
substances, may lead to an oxygen gradient.
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8.9.2

Operating Instructions

Signal drifts due to temperature gradients

A further source of imprecise measurement is insufficient temperature compensation. If temperature compensation
is used, ensure that no temperature gradients exist between the oxygen sensor and the temperature sensors. If
measurement is conducted without temperature compensation, bear in mind that the OXY5500 only measurescorrectly if the sample temperature is constant during measurement and the temperature is the same as the entry at
the beginning of the measurement. A temperature measurement error of +/-0.3 °C will result in a measurement
error of about +/-1% of reading. The temperature probe provided with the unit has excellent precision, but large gas
temperature gradients will result in an offset between the oxygen probe and temperature probe. To avoid an offset,
ensure that the gas temperature has been stabilized prior to passing over the oxygen probe. SCS systems provided byEndress+Hauser are designed to ensure that this is not a problem.

8.9.3

Signal drift due to photo-decomposition

The oxygen-sensitive material may be subject to photo-decomposition resulting in a signal drift. Photodecomposition takes place only during illumination of the sensor tip and depends on the intensity of the excitation
light. Therefore, the excitation light should be minimized. Continuous illumination of a OP-3 oxygen sensor over a
period of 24 hours may lead to a phase drift of up to + 0.4% of reading at 20 °C. However, this effect of photodecomposition can be minimized by changing the measuring mode to the 30-second or minute interval mode. In
these modes, the software switches off the excitation light after recording the data point and switches it on after theinterval chosen. Use the interval method whenever possible to increase the operational life of the sensor. Refer to thethe table below.
Name

Drift per 3600 Points

Drift per 50000 Points

Drift per 100000 Points

OP-3<0.15% air-sat.

<0.15% air-sat.

<0.25% air-sat.

OP-6<1 ppb<2 ppb< 3 ppb

Table 33. Sensor drift at zero reading (0 ppb) recording 3,600, 50,000 and 100,000 data points

8.10

Performance improvement

To improve the performance over past measurements, check the calibration values by using the calibration test gases
for “0” (UHP nitrogen 99.9999%), and the Span test gas (100 ppm oxygen/N2). This can be completed by using a
3-way valve connected to the test gas enabling the user to switch back and forth between bottles. This can assist inverifying proper operation.

8.11

Troubleshooting

Refer to the table for frequently asked questions related to troubleshooting the OXY5500 before contacting theservice department. To contact the service department, refer to “Service” in the next section.
Indication

Suspected Cause

Solution

No Sensor
detected!

Amplitude < 1000

Make sure that the SMA connector is connected
properly to the connector.

Signal too low!

Amplitude < 3000

Check sensor connections or POF for any irregularities.
Refer to Low signal strength: High O2 on OP-3, OP-6, or
OP-9 probe → .
Refer to High signal strength: Low O2 or no O2 on OP-3,
OP-6, or OP-9 probe → .

Signal Overflow!
Critical Error 16!

Reference signal exceeds specified range

Refer to “Service”.

No Pt100!

Pt100 sensor has wrong cable or is broken

Check temperature sensor connection.

Critical Error 512!

Measurement system defect

Refer to “Service”.

SD Card Error!

SD card cannot be read or it cannot be written on

Refer to “Service”.

Pressure Sensor
out of range!

Pressure sensor is either not connected or provides Check the pressure sensor and its connection.
a current less than 4mA or higher than 20mA

Flash Error!

Writing on Flash was not successful

Endress+Hauser

Refer to “Service”.

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Indication

OXY5500 gas analyzer

Suspected Cause

Solution

Storage space full! No more measurement files can be created and no
more measurement entries can be saved.

Delete measurement files via Measurement Browser orService Software.

Table 34. Potential instrument problems and their solutions

8.12

Service

For Service, refer to our website (https://endress.com/contact) for the list of local sales channels in your area.
To return the unit for service or replacement, refer to "Service repair order".

8.12.1 Before contacting tech support
Before contacting Technical Services, prepare the following information to send with your inquiry:•

Contact information•

Description of the problem or questions

Access to the information above will greatly expedite our response to your technical request.

8.12.2 Service repair order
If returning the unit is required, obtain a Service Repair Order (SRO) Number from Customer Service before returning
the analyzer to the factory. Your service representative can determine whether the analyzer can be serviced on site or
should be returned to the factory. All returns should be shipped to:11027 Arrow Rte.
Rancho Cucamonga, CA 91730-4866
United States of America
www.endress.com
8.12.2.1 Renewity returns
Returns can also be made inside the USA through the Renewity system. From a computer, navigate tohttps://endress.com/returns and complete the online form.

8.13

Packing and storage

Endress+Hauser’s OXY5500 analyzers and auxiliary equipment are shipped from the factory in appropriate
packaging. Depending on the size and weight, the packaging may consist of a cardboard-skinned container or awooden crate. All inlets and vents are capped and protected when packaged for shipment.
If the equipment is to be shipped or stored for any length of time, it should be packed in the original packaging whenshipped from the factory. If the analyzer has been installed and/or operated (even for purposes of a demonstration),
the system should first be decontaminated (purged with an inert gas) before powering down the analyzer.

8.13.1 Preparing the analyzer for shipment or storage
1.

Shut off the process gas flow.

2.

Allow all residual gas to dissipate from the lines.

3.

Connect a purge supply, regulated to the specified sample supply pressure, to the sample supply port.

4.

Confirm that any valves controlling the sample flow effluent to the low pressure flare or atmospheric vent are
open.

5.

Turn on the purge supply and purge the system to clear any residual process gases.

6.

Turn off the purge supply.

7.

Allow all residual gas to dissipate from the lines.

8.

Close any valves controlling the sample flow effluent to the low pressure flare or atmospheric vent.

9.

Disconnect power to the system.

10. Disconnect all tubing and signal connections.

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Operating Instructions

11. Cap all inlets and outlets to prevent foreign material such as dust or water from entering the system).
12. Pack the equipment in the original packaging in which it was shipped, if available. If the original packaging

material is no longer available, the equipment should be adequately secured to prevent excessive shock orvibration.

13. If returning the analyzer to the factory, complete the Decontamination Form provided by Endress+Hauser (refer

to "Service repair order") and attach to the outside of the shipping package as instructed before shipping.

8.14

Storage

The packaged analyzer should be stored in a sheltered environment that is temperature controlled between -20 °C (4°F) and 70 °C (158 °F) and should not be exposed to direct sun, rain, snow, condensing humidity, or corrosive
environments.

8.15

Disclaimers

Endress+Hauser accepts no responsibility for consequential damages arising from the use of this equipment. Liability
is limited to replacement and/or repair of defective components.
This manual contains information protected by copyright. No part of this guide may be photocopied or reproduced inany form without prior written consent from Endress+Hauser.

8.16

Warranty

For a period of 18 months from date of shipment or 12 months in operation, whichever comes first, Endress+Hauser
warrants that all products sold by it must be free from defects in material and workmanship under normal use andservice when correctly installed and maintained. Endress+Hauser’s sole liability and Customer’s sole and exclusive
remedy for a breach of warranty is limited to Endress+Hauser’s repair or replacement (at Endress+Hauser’s sole
option) of the product or part thereof which is returned at Customer’s expense to Endress+Hauser’s plant. This
warranty must apply only if Customer notifies Endress+Hauser in writing of the defective product promptly after the
discovery of the defect and within the warranty period. Products may only be returned by Customer whenaccompanied by a return authorization reference number (SRO) issued by Endress+Hauser. Freight expenses for
products returned by Customer will be prepaid by Customer. Endress+Hauser must pay for shipment back to
Customer for products repaired under warranty. For products returned for repair that are not covered underwarranty, Endress+Hauser’s standard repair charges must be applicable in addition to all shipping expenses.

Endress+Hauser

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Operating Instructions

OXY5500 gas analyzer

www.addresses.endress.com

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Endress+Hauser