TI01656C/66/EN/02.23
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OXY5500
Optical Oxygen Analyzer

Compact, stand-alone, one-channel analyzer with an LCD display
and built-in data logger. The sensor probe uses an optical fiber
cable for a reliable signal to the analyzer. Certified for CSA Class I
Division 2 and ATEX/IECEx/UKEX Zone 2.
Applications

Key Features• Use to monitor O2 to prevent pipeline corrosion• Suitable for use in natrual gas pipelines, gas
processing plants, and vapor recovery units• Ranges from 0 to 10 ppmv to 0 to 20% O2••••••••Easy-to-navigate display and menu
Low power consumption
Data logging for 30 days
Small optical sensor; no membrane or consumablechemicals
Excellent long term stability
Not affected by H2S or other sulfur species
Fast and continuous
CSA and ATEX/IECEx/UKEX Certification

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Table of Contents
1

Introduction .......................................... 3

Product overview.............................................................. 3
Standard documentation................................................ 4
Registered trademarks .................................................... 4
Manufacturer address ..................................................... 42System design ....................................... 5Measuring system ............................................................ 5Equipment architecture................................................... 73Certificates and approvals................... 9UKCA mark ....................................................................... 9Ex approval ....................................................................... 9RCM mark ......................................................................... 9FCC mark .......................................................................... 9Area classifications ....................................................... 104Ordering information ........................ 11Product configurator ..................................................... 11
Order codes..................................................................... 12
Gas specifications .......................................................... 14
Technical data ................................................................ 15

CE mark ............................................................................. 9

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1
Product overview

Introduction

The Endress+Hauser OXY5500 Optical Oxygen Analyzer is a compact,
stand-alone, one-channel analyzer with an LCD display and built-in datalogger. The sensor probe is inserted into the process stream and isconnected to the controller by an optical fiber.
Full Sample Conditioning Systems (SCS) are available with the OXY5500 as
well as software for PC interface.
Low maintenance: The analyzer uses an optical method that detects
oxygen using a probe that is inserted into the gas stream. The probe
can be easily cleaned and has a lifetime measured in years.
Calibration of the analyzer is a simple procedure that can be performedin minutes using a binary standard with oxygen in nitrogen.

Accurate and reliable: OXY5500 technology is ideally suited formeasuring in Natural Gas and Gas Processing applications.

The sensor is not affected by even high levels of H2S or other sulfur species.
There is no cross sensitivity to contaminants or other gases in natural gas.
The electronics are certified for hazardous area use. The accuracy andreliability of the measurements are superior to the electrochemical
analyzers.
The Quench Fluorescence Method:
1.

Blue LED light is transmitted to the sensor tip causing it to emit
“fluorescense.”

Figure 1. Flourescense

2.

When the sensor tip comes into contact with oxygen, the O2 molecules
absorb energy, preventing the emission.

Figure 2. Energy absorption

The amount of oxygen is inversely proportional to the intensity andduration of the luminescense.

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TI01656CENStandard
documentation

OXY5500

Each analyzer shipped from the factory is packaged with documents
specific to the model that was purchased. Hard copies of the safety manualand declaration of conformity are included with the analyzer. In addition,
all documentation is available on the Endress+Hauser website atwww.endress.com and on the USB drive included in the shipping package.
This Technical Information document is an integral part of the complete
document package, which also includes:
NumberDocument Type

Description

BA02195C

OperatingInstruction

Provides the most common options andaccessories

BA02196CSCS Operating
Instruction

Provides an overview of the SCS and its
components, operation, and troubleshooting

XA02754C

Safety Instruction

Provides the most common safety issues
related to the installation and operation of theanalyzer

SD02868C

Service Software
Provides instruction for operating, diagnosing,Operatingand servicing the analyzer
Instruction Table 1. Standard documentation

Registered trademarks

Modbus®
Registered trademark of SCHNEIDER AUTOMATION, INC.

Manufacturer address

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

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2Measuring system

System design

OXY5500 Optical Oxygen Analyzer
The base analyzer consists of:
1. Controller
Contains the power supply, HMI(LCD display and keypad),communications, andmeasurement control electronics.

1

2. Oxygen probe
Blue LED light is transmitted to thesensor tip. The presence of oxygen
prevents the sensor tip fromemitting fluorescent light.

2
3

3. RTD probeRTD probe measures thetemperature of the process stream.

4

4. Pressure port (optional)
Pressure transducer reads thepressure in the system.
Table 2. Analyzer components

OXY5500 Optical Oxygen Analyzer with SCS on panel

2The analyzer system on a panel
consists of the following and isdesigned for exterior mounting near
the sample extraction point or inside ashelter.
1. Sample conditioning components

13Components used to filter the gas
while maintaining a representative
sample and control the pressureand flow. An optional bypass isavailable as a speed loop and tocontinually sweep the dirty side ofthe membrane separator.
2. OXY5500 Optical Oxygen Analyzer
See description above.
3. Anodized aluminum panel(Other materials can be specialordered.)
Allows easy mounting to a wall,
Unistrut frame, or post andprovides a mounting surface of thesample conditioning components.

Table 3. Analyzer components

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OXY5500 Optical Oxygen Analyzer with enclosed SCS, with heater(analyzer only certified)1
2

The enclosed analyzer system withoptional heater consists of thefollowing and is typically used forexterior mounting near the sample
extraction point.
1. OXY5500 Optical Oxygen
AnalyzerSee description above.

3

2. Stainless steel enclosure
Allows easy mounting to awall, Unistrut frame, or post
and provides a protectedenvironment for the SCS andanalyzer.
3. Heater system (optional)
Includes a heater withthermostat for condensation
protection and stabletemperatures in colder
weather. When a heater isemployed, the enclosure will
be outfitted with insulation toreduce heat loss and with aheat trace boot for the gas
inlet.

Table 4. Analyzer components

OXY5500 Optical Oxygen Analyzer with SCS in transportable case (generalpurpose area classification only)
The enclosed analyzer systemwith optional heater consists ofthe following and is typically used
for exterior mounting near thesample extraction point.
1

1. OXY5500 Optical OxygenAnalyzer
See description above.
2. Transportable case2

Allows for easytransportation of analyzer indurable carrying case.

Table 5. Analyzer and transportable case

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Equipmentarchitecture

TI01656CENOXY5500 Optical Oxygen Analyzer – panel mountA81B
2934567CD
Figure 3. Panel mountEndress+Hauser

A

Sample purge in, 140 to 275 kPa (20 to 40psi)

Analyzer flow indicator and control

B

Sample in, 140 to 275 kPa (20 to 40 psi)

Pressure regulator

C

Reference gas in, 15 to 70 kPa (2 to 10 psi)

5

Bypass flow indicator and control

D

6

Pressure gauge

Sample vent to safe area, 90 to 120 kPa(800-120 mbara)

7

Membrane separator

8

Signal wiring

9Analyzer power connection

1

Pressure relief valve

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OXY5500 Optical Oxygen Analyzer – heated enclosure

A6B
7
123C
485DEFigure 4. Heated enclosure

81Heat trace bootA

Sample purge in, 140 to 275 kPa (20 to 40 psi)

2Insulation

B

Sample in, 140 to 275 kPa (20 to 40 psi)

3Thermostat

C

Reference gas in, 15 to 70 kPa (2 to 10 psi)

4Heater

DEnclosure vent to safe area, atm

5Heater power terminal

E

6Signal wiring

Sample vent to safe area, 80 to 120 kPa (800-1200mbara)

7Analyzer power connection

8

Heater power connection

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3CE mark

Certificates and approvals

The OXY5500 Optical Oxygen Analyzer meets the legal requirements of theapplicable EU Directives when provided as an analyzer only or in panel
mount configuration. These are listed in the corresponding EU Declarationof Conformity along with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it
the CE mark.

UKCA markThe measuring system meets the legal requirements of the applicable UKstatutory requirements. These are listed in the corresponding UK
Declaration of Conformity together with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it
the UKCA marking.

Ex approval

The measuring device is certified for use in hazardous areas and therelevant safety instructions are provided in the separate “SafetyInstructions” document. Reference is made to this document on thenameplate.
The Safety Instructions containing all the relevant explosion protection
data is available from the Endress+Hauser website.

RCM mark

The OXY5500 Optical Oxygen Analyzer has been registered in the Electrical
Equipment Safety System (EESS) database used by the AustralianCommunication and Media Authority (ACMA), the Electrical Regulatory
Authorities Council (ERAC) and Radio Spectrum Management (NewZealand).

FCC mark

The OXY5500 Optical Oxygen Analyzer is below the stated electromagnetic
radiation limits specified by the Federal Communications Commission.
Endress+Hauser has followed the requirements of the Supplier’s
Declaration of Conformity authorization procedures.

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Area classifications

OXY5500

Model

Certifications

OXY5500 Optical
Oxygen Analyzer

cCSAus:Class I, Division 2, Groups A, B, C, D, T3, Type 4X andIP66
Tambient: -20 °C to +60 °C
ATEX/IECEx/UKEX:II 3G Ex ec IIC T* Gc T3
T amb.: -20°C to 60°C
NOTE: Certification applies to the analyzer only. The
enclosure versions of this product are considered
accessories for the product and not included as part ofthe certification.
Table 6. Certification information

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4Product configurator

Ordering information

Detailed ordering information is available for your nearest salesorganization at www.addresses.endress.com or in the Product Configurator
under www.endress.com. To access:1. Click Corporate.
2. Select the country.
3. Click Products.
4. Click Product finder.
5. Select the product using the filters and search field.
6. Open the product page.
7. Click the Configure button to open the Product Configurator.
Product Configurator is a tool for individual product configuration thatoffers:
Up-to-the-minute configuration data
Automatic verification of exclusion criteria• Automatic creation of the order code and its breakdown in PDF or Excel
output format• Ability to order directly in the Endress+Hauser Online Shop••

If a certain product is not available in your region, refer to the website(www.endress.com/contact) to locate your local sales channel for more
information.

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Order codes

OXY5500

FeatureNumberOrder
Code

Description

Measurement Range (Choose one)010

10-1000 ppmv O2 Range1

20-5% O2 Range1

30-20% O2 Range1

YTSP – Number to be specified

Background (Choose one)020

1

Natural Gas (Stream composition is required if it does notalign with Tables 1, 2, or 3)

2

Pure Air or Nitrogen

YTSP – Number to be specified

Probe Fiber Length (Choose one)030

00.7 meters (order this length for use with Sample Systems)

1

2.5 meters with Conduit

25.0 meters with Conduit

Pressure Compensation (Choose one)040

0None – Analyzer calibrated in-situ

1

Pressure sensor included – Factory calibrated for 8001400 mbar

Input Power (Choose one)050

1108-253 VAC

29-30 VDC; 18-30 VDC (IECEX/ATEX/UKEX)

Cable Entries (Choose one)060

1

Thread 3/4 NPT

2Thread M20

Enclosure Material (Choose one)070

1304 Stainless Steel

2316 Stainless Steel

Analyzer Mounting (Choose one)

080

120

None – Analyzer only; no SCS

1Analyzer Mounted on Aluminum Panel

2Analyzer System Mounted Inside Overall 304SS Enclosure(Analyzer Only Certified)

3Analyzer System Mounted Inside Overall 316SS Enclosure(Analyzer Only Certified)

4

Remote Sample System Panel Mount2

Y

TSP – Number to be specified

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Sample Conditioning System (Choose one)

090

0None

1

Single Stream with Regulator, Bypass, Flowmeters,Filtration (1/4 inch)42

Single Stream with Regulator, Bypass, Flowmeters,Filtration (6 mm)43

Same as 1 with Khrone Armored Flowmeter and Parker
Veriflo Regulator5

4Same as 2 with Khrone Armored Flowmeter and Parker
Veriflo Regulator55Single Stream with Regulator, Bypass, Flowmeters, Filter– Transportable3, 8YTSP – Number to be specified

Enclosure Heater (Choose one)

1000None

1120VAC Heated Enclosure + Temperature Control andInsulation (CSA)6

2240 VAC Heated Enclosure + Temperature Control andInsulation (IECEx)6

YTSP – Number to be specified

Safety Purge Kit (Choose one)
0110NonePurge Kit for Applications with >300 ppmv H2S (PanelMount)7
2Purge Kit for Applications with >300 ppmv H2S(Enclosure Mount)7
Marking (Choose one)120

10NoneT1

Stainless Steel Tag (up to 2 lines of text)
Table 7. Order codesNOTES
1. Smaller ranges within the stated range are set in the instrument by the user.
2. When choosing this option, be sure to select the appropriate “Probe FiberLength” above (do not choose options 0 or 3).
3. Includes Quick Connect Fittings. Must order with “Analyzer Mounting” option
1.
4. Includes Neon pressure regulator (Series 10) and King Glass Tube Flow Meter(Model 7430).
5. Includes Parker Veriflo pressure regulator (Model IR4000) and Khrone flow
meter (Model DK-32).
6. Heater ordered with “Analyzer Mounting” options 2 and 3 only. Heater notpart of analyzer certification. 120 VAC comes with 3/4 inch cable entries. 240
VAC comes with M20 cable entries. Heated enclosures include heat trace boot.
7. Includes safety kit for >300 ppmv H2S; purge connections, warning labels, andsensor port for enclosure when applicable.
8. Transportable; this option includes a Pelican carrying case.

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Gas specificationsAllowable component range
Component name

Abbreviation

Natural gas

RichnaturalgasRichnaturalgas/pure
CO2

Table 1

Table 2

Table 3

MethaneC1

90 to 100%

50 to 100%

0 to 50%

EthaneC2

0 to 7%0 to 20%

0 to 20%

PropaneC3

0 to 2%0 to 15%

0 to 15%

ButanesC4

0 to 1%

0 to 5%0 to 5%

Pentanes

C5

0 to 0.2%

0 to 2%0 to 2%

Hexanes andheavier

C6+

0 to 0.2%

0 to 2%0 to 2%

Carbon dioxide

CO20 to 3%0 to 20%

50 to 100%

Nitrogen andother inerts

N20 to 10%

0 to 20%

0 to 20%

Hydrogen sulfide

H2S

0 to 300
ppmv

0 to 5%0 to 5%Water

H2O

0 to 5000
ppmv

0 to 5000
ppmv

0 to 5000
ppmv

Table 8. Gas specifications

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Technical data

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Measurement data
Target components

Refer to Application Note (AI01218C)

Principle of measurement

Quenched Fluorescense (QF)

Measurement ranges

OP-9

OP-6

OP-3

0 to10 to0 to 1000 ppmv
user setting

0 to 1 to
0 to 5% user
setting

0 to 10 to
0 to 20% user
settingLower limit of detection

0.5 ppmv

20 ppmv

300 ppmv

Accuracy at 20 to 25 °C±2 ppmv or ±5%of reading±3% ofreading±2% ofreading

Repeatability±1% of reading

Application data
Ambient temperature range-20 °C to 50 °C (-4 °F to 122 °F)

Maximum probe pressure

275 kPag (40 psig)

Sample pressure range(sample to system inlet)

Typically between 140 to 275 kPag (20 to 40psig)

Sample pressure range (atsensor)

800 to 1400 mbara

Sample flow rate

1.0 slpm (2.1 scfh)

Bypass flow rate

1.0 slpm (2.1 scfh)

Electrical and communication
Input power

108 to 253 VAC, 50/60 Hz; 5.3W at 120VAC;
6.6W at 240 VAC or 9 to 30 VDC (CSA), 18 to 30
VDC (IECEX/ATEX/UKEX); 4.7W at 24VDC

Communication

Analog: Qty 2, 4-20mA outputs andQty 1, 4-20mA input (sample pressure)
Fieldbus: RS-232C, RS-485, and Ethernet 10/100
with Modbus
Output Relays: Qty 2, 250mA max load(concentration and fault alarms)
USB 2.0 works with service software only
4GB internal memory with internal data logging

Endress+Hauser

LCD display

Concentration, temperature, sample rate, datalogging, diagnostics, plus full menu for setup,calibration, etc.

Service software

Windows software
Connect via USB port
Download data logs, trend and monitor,calibrate, and troubleshoot15

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PhysicalElectronics enclosure type

NEMA Type 4X and IP66, 304 or 316L stainlesssteel

Analyzer dimensions

280 mm H x 230 mm W x 114 mm D
(11 x 9 x 4.5 inches)
Does not include sample conditioning system

Analyzer with sample
system

On panel: 560 mm H x 560 mm W x 115 mm D(22 x 22 x 4.5 inches)
Enclosed: 610 mm H x 610 mm W x 233 mm D(24 x 24 x 9.2 inches)

Probe cable length

0.7 m standard (2.5 m and 5.0 m – optional)

Analyzer weight

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

Optical probe jacket
material

304 series polished stainless steel

Sample conditioning systemwetted materials

316 Stainless Steel with electro-polished tubing
and components

Certification
Analyzer
Table 9. Technical data

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