Operating Manual

Incl. EU Declaration of Conformity

Ion Reference Gauge Controller
IRC081

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1

Table of Contents

2

Table of Contents

2

1 Introduction
1.1 Validity
1.2 Intended use and function
1.3 Unintended use and function
1.4 Supplied equipment
1.5 Safety
1.6 Responsibility and warranty

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4
4
4
5
5
6

2 Specifications

7

3 Installation
3.1 Unpacking
3.2 Mechanical installation
3.3 Connection
3.3.1 Rear panel of the IRC081
3.3.2 Power supply
3.3.3 Grounding
3.3.4 GAUGE
3.3.5 FARADAY
3.3.6 DEFLECTOR
3.3.7 CAGE
3.3.8 WEHNELT
3.3.9 FIL HIGH/FIL LOW
3.3.10 GND
3.3.11 VACUUM INTERLOCK/STATUS
3.4 Software
3.4.1 RedLab measurement module
3.4.2 IRC081 User Interface and LabVIEW runtime environment
3.4.3 Storage location of the controller's calibration data

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4 Operation
4.1 User interfaces
4.1.1 Front panel of the IRC081
4.1.2 Main window of the IRC081 User Interface
4.2 Display
4.3 Controls
4.3.1 IRC081
4.3.2 IRC081 User Interface
4.4 Switching on and off
4.4.1 Switching on
4.4.2 Switching off
4.4.3 Wait time
4.5 Measurement operation
4.5.1 Program start
4.5.2 Configuration and preparation
4.5.3 Measurement
4.5.4 Data storage
4.5.5 Diagnosis
4.5.6 Software information

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5 Maintenance, service and operating parameter check
5.1 Maintenance5.1.1 Cleaning
5.1.2 Periodic inspections
5.2 Troubleshooting
5.2.1 Fault display
5.2.2 Help in case of faults
5.2.3 Fuse replacement
5.2.4 Repair
5.3 Checking operating parameters5.3.1 Voltages
5.3.2 Ion collector current
5.3.3 Emission current

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IRC081.om6 Storage, disposal
6.1 Packaging
6.2 Storage
6.3 Disposal

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7 Accessories

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Appendix
A: Standard parameters
B: Program library
C: Conversion table
D: Further Information

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42

EU Declaration of Conformity43

The (→  XY) symbol is used for references in the text. The (→  [Z]) symbol isused for references to other documents listed in the list of references.

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31 Introduction
1.1 Validity

This document is valid for products with the part number
399-880
You can find the part number (PN) on the nameplate.
This instruction manual is based on the 0.6 ff hardware version and version 2.0.7 ff
of the PC software for control and read-out.
Older hardware and software versions do not have the full functionality described inthis instruction manual.
If the device does not work as described, check whether your device is equippedwith this firmware version. The hardware version is indicated on the nameplate. You
can find the software version in the software's info window (→ software information, 36).
The nameplate is on the side of the device. The specifications of the nameplate are
required when communicating with INFICON.

Figure 1 – Example of a nameplate

1.2 Intended use andfunction

The Ion Reference Gauge Controller IRC081 and its User Interface are an operating
and display interface to the standardized Ion Reference Gauge IRG080. IRC081
delivers, in combination with IRG080, precise and reference total pressure measurement in the range of 10-8 … 10-4 mbar (10-6 … 10-2 Pa). To this end, various
parameters for operating the Ion Reference Gauge IRG080 can be set and read.
The coupled "IRC081 User Interface" PC software takes on essential control functions and graphically depicts the parameter values and pressure value. Full functionality is only provided by operating both components together.
The IRC081 is only intended to be connected to an Ion Reference Gauge IRG080.
The Ion Reference Gauge Controller IRC081 and its user interface are referred to
below as "IRC081" for short.
The Ion Reference Gauge IRG080 will be referred to as "IRG080".

1.3 Unintended use andfunction

The IRC081 is designed and built exclusively for the purpose mentioned in thesection Intended use,  4 and may only be used in this manner.
Any use for purposes that deviate from the above mentioned, in particular for theconnection of not allowed or unsuitable gauges and components and/or theapplication of voltages outside the allowed range is considered unintended use.
Use of the IRC081 for control tasks, in particular in safety-critical applications, isexpressly excluded.

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1.4 Supplied equipment

Designation

Quantity

Ion Reference gauge Controller IRC081
Shockproof measuring line, CAT III, 1 m, red
Shockproof measuring line, CAT III, 1 m, black
USB cable, USB A/USB B, 2 m, USB 2.0
USB stick with software and instructions
D-sub, female, 9-pin for vacuum interlock

1
1
1
1
1
1

1.5 Safety
Personnel qualifications

The work described in this document may only be carried out by persons who havesuitable technical training and have the necessary experience or have been trained
accordingly by the operator.

Depiction of residual hazards

In this instruction manual, safety instructions for residual hazards are depicted asfollows:

DangerIndicates an imminently dangerous situation that, if not avoided, will result in deathor serious injuries.

Warning

Indicates a possibly dangerous situation that, if not avoided, could result in death orserious injuries.

CautionIndicates a possibly dangerous situation that, if not avoided, could result inmoderate or light injuries or property damage.

Indicates to particularly important but non-safety-relevant information.

Fundamental safety regulations

Comply with the relevant safety regulations when carrying out any work.
Furthermore, observe all safety instructions given in this document and pass these
instructions on to all other users.

In particular, pay attention to the following safety instructions:

Danger

Supply voltage
Contact with live components in the device is dangerous to life if objects areinserted or liquids penetrate inside.
Do not insert any objects into openings in the device. Protect the device against
moisture.

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Caution

Improper use
Improper use can damage the IRC081.
Only use the IRC081 according to the manufacturer's specifications (→ Intended
use,  4).

CautionIncorrect connection and operation data
Incorrect connection and operation data can damage the IRC081.
Adhere to all stipulated connection and operation data.

1.6 Responsibility andwarranty

6

INFICON denies all responsibility and warranty if the operator or third parties•

disregard this document,•

use the product in an unintended manner,•

make any adjustments to the product (conversions, modifications, etc.),•

operate the product with accessories that are not listed in the associated productdocumentation.

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IRC081.om2 Specifications
Mechanical data

WeightUse
Dimensions [mm]2.2 kgTabletop

Figure 2 – Dimensions of the IRC081

Environment

Temperature
Storage
Operation
Relative humidity
Use
Degree of contamination
Ingress protection

tinb82e1-20 – +60 °C+5 – +40 °C
max. 80% (up to 30 °C)
decreasing to max. 50% (from 40 °C)
indoors, max. altitude of 3000 m above MSL
II
IP40

Operation

ManualComputer

via 5 helipot knobs
via USB-B 2.0 with PC software "IRC081 User
Interface"

Connection to power supply

VoltageFrequency
Power consumption
Excess voltage category
Protection category
Connector

100-240 V (ac)50/60 Hz
max. 20 VA
II1
IEC 320 C14 connector plugFuse

2 x T1.6A H

Measurement channel

Connector
to gauge control interface
to gauge ion collector
Usable gauges

1 x LEMO EGG.2B.307.CLL
1 x BNC
IRG080Measuring sockets

Connection type
Quantity(2023--10)

IRC081.om

CAT III, 4 mm
7 (2x filament, Wehnelt, cage (anode),
deflector, Faraday, GND)

7

Vacuum interlock/status

Connector
D-sub, 9-pin (male)External vacuum interlock: 1 x relay contact from external vacuum gauge
Sensor status: 1 x potential-free make contact

Voltage sources
Accuracy
0.1%

Cathode bias voltage

20-60 V (dc)Wehnelt voltage

20-60 V (dc)max. 1 mA

0.1%

Anode voltage

200-400 V (dc)max. 1 mA

0.1%

Deflector voltage

20-60 V (dc)max. 1 mA

0.1%

Faraday voltage

200-400 V (dc)max. 1 mA

0.1%

Current sources
Emission current

Two emission current ranges (100 µA, 1 mA, accuracy : 0.1%)

Heater current

Controlled by the emission current (in increments of 0.1 A)
Limit: 1-2 A (PC software)
The heater current guided control is possible when the selected emission current ishigher than the set maximum heater current.

Measurement output

8

Measurement ranges

7

End values

50 pA/500 pA/5 nA/50 nA/500 nA/5 µA/50 µA

Converter resolution>16 bitMin. measurement current<0.1 pA

Accuracy<0.1%, in the 50 pA range <0.5%

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3 Installation
3.1 Unpacking

 Inspect the transport packaging for external damage.
 Unpack the IRC081 and put the packaging aside.
Keep the packaging material. The IRC081 may only be stored andtransported in its original packaging.

 Check the IRC081 for completeness.
 Visually check the IRC081 for damage.
Warning

In case of visible damage, putting the product into operation can be life-threatening.
Do not put the damaged product into operation and secure it against unintended
operation.

3.2 Mechanical installation

The IRC081 is intended for use as a tabletop device. Always pay attention to thefollowing safety instruction.

CautionExcessive ambient temperature.
Exceeding the maximum allowable ambient temperature can damage the device.
Make sure that the maximum allowable ambient temperature is not exceeded. Do
not expose the device to direct sunlight.

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3.3 Connection
3.3.1 Rear panel of the IRC081

Figure 3 – Rear view of the IRC081
A
B
C
D
E
F
G
H
I
J
K
L

Warning

GAUGE connection (ion collector current input)
DEFLECTOR measuring socket (deflector voltage)
WEHNELT measuring socket (Wehnelt voltage)
FIL HIGH measuring socket (bias voltage – upper value)
GND measuring socket
Power supply with power switch and device fuses
Attachment and grounding screw for internal protective conductor
VACUUM INTERLOCK/STATUS connection
FIL LOW measuring socket (bias voltage – lower value)
CAGE connection (anode voltage)
FARADAY connection (Faraday voltage)
GAUGE connection (Interface to Sensor)

Internal protective conductor and grounding.
The internal protective conductor is attached to the inside of the housing by meansof a screw. A device with an unattached protective conductor can be life-threatening
in the event of a fault.
Do not turn or loosen the screw and the corresponding nut on the housing (to which
the internal protective conductor is fastened).
The screw outside of the housing serves as an earthing connection with which theunit is connected to the protective earthing of the vacuum chamber. To do this, only
the outer nut must be loosened.
The assignment of the individual connections is described in the sections below.

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3.3.2 Power supply

The power supply (→ Figure 3 – Rear view of the IRC081, pos. F,  10) is intended
for a power cable that ends in a connector plug on the device side.
The power cable must meet the following specifications:

Danger•Three-core cable with protective grounding•

Conductor cross section 3 × 0.75 mm2 or greater•

Cable length: max. 2.5 m

Supply voltage.
Improperly grounded devices are life-threatening in the event of a fault.
Only use three-core power cables or extension cords with protective grounding.
Only plug the power supply plug into a socket with a protective contact.

 Plug the connector plug of the power cable into the power connector of thedevice.

 Plug the power supply plug of the power cable into the socket.
3.3.3 Grounding
Protective conductor

The grounding screw (→ Figure 3 – Rear view of the IRC081, pos. G,  10) can beused to connect the IRC081 to the local protective grounding network.

 If necessary: Connect the local protective grounding network to thegrounding screw via a protective conductor.

 Only loosen the outer nut on the earthing screw.
The metal flange of the IRG080 gauge is connected to the protective conductor via
the measuring line through the IRC081.

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113.3.4 GAUGEThe GAUGE connection is used to connect the IRG080.

Control signals

Control signals and supply voltages are supplied through a 7-pin socket, type LEMO
EGG.2B.307.CLL (→ Figure 3 – Rear view of the IRC081, pos. L,  10 and Figure 4– 7-pin GAUGE connection socket,  12).
Contact assignment:

Figure 4 – 7-pin GAUGE connection socket
1
2
3
4

Faraday
Wehnelt
Fil High
Fil Low

5
6
7

Safety interlock
Cage (anode)
Deflector

A safety interlock in the measuring line prevents accidental switch-on of
the emission when the connector is pulled out. Nevertheless, only
perform work on the IRG080 or the measuring line when the device isswitched off. Wait about another 15 seconds after switching off the device
before starting to work.
For operation, both the safety interlock and the vacuum interlock circuits
must be closed (→ Figure 5 – VACUUM INTERLOCK/STATUS
connector plug,  14).

Measurement signal

The measurement signal, i.e., the ion current, is transmitted via a coaxial cable(→ Figure 3 – Rear view of the IRC081, pos. A,  10).
Contact assignment:

Inner conductor: ion current
Outer conductor: shielding

3.3.5 FARADAY

The FARADAY connection is used to measure the set Faraday voltage. A single-pin
CAT III, 4 mm measuring socket is available for the measurement (→ Figure 3 –Rear view of the IRC081, pos. K,  10).

Warning

Dangerous contact voltage.
Voltages above 60 V (dc) are dangerous to contact.
Use the included shockproof measuring lines and a suitable meter for voltage
measurement.

 Measure the Faraday voltage between the FARADAY measuring socket and

the GND measuring socket with the included shockproof measuring lines anda suitable meter.

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3.3.6 DEFLECTORThe DEFLECTOR connection is used to measure the set deflector voltage. A singlepin CAT III, 4 mm measuring socket is available for the measurement (→ Figure 3 –Rear view of the IRC081, pos. B,  10).

 Measure the deflector voltage between the DEFLECTOR measuring socket

and the GND measuring socket with the included shockproof measuring line
and a suitable meter.

3.3.7 CAGE

The CAGE connection is used to measure the set cage (anode) voltage. A singlepin CAT III, 4 mm measuring socket is available for the measurement (→ Figure 3 –Rear view of the IRC081, pos. J,  10).

Warning

Dangerous contact voltage.
Voltages above 60 V (dc) are dangerous to contact.
Use the included shockproof measuring lines and a suitable meter for voltage
measurement.

 Measure the Faraday voltage between the CAGE measuring socket and the
GND measuring socket with the included shockproof measuring line and asuitable meter.

3.3.8 WEHNELTThe WEHNELT connection is used to measure the set Wehnelt voltage. A single-pin
CAT III, 4 mm measuring socket is available for the measurement (→ Figure 3 –Rear view of the IRC081, pos. C,  10).

 Measure the Wehnelt voltage between the WEHNELT measuring socket and
the GND measuring socket with the included shockproof measuring line anda suitable meter.

3.3.9 FIL HIGH/FIL LOW

The FIL HIGH and FIL LOW connections are used to measure the set cathode bias
voltage. A single-pin CAT III, 4 mm measuring socket is available for themeasurement (→ Figure 3 – Rear view of the IRC081, pos. D and I,  10).

 Measure the voltage between the FIL HIGH / FIL LOW measuring sockets

and the GND measuring socket with the included shockproof measuring line
and a suitable meter.

 Form the arithmetic mean from the two measured voltage values todetermine the correct cathode bias voltage.

3.3.10 GND

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The GND connection is used as a ground connection for the voltage measurements.
A single-pin CAT III, 4 mm measuring socket is available (→ Figure 3 – Rear view of
the IRC081, pos. E,  10).

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3.3.11 VACUUM
INTERLOCK/STATUS

The VACUUM INTERLOCK/STATUS (→ Figure 3 – Rear view of the IRC081,
pos. H,  10 and Figure 5 – VACUUM INTERLOCK/STATUS connector plug,  14)
is used as a safety interlock to protect the cathode of the sensor. During
measurement operation, a relay contact connects PIN 1 to PIN 2 (max. 30 V (ac),
0.5 A).
Contact assignment:

Figure 5 – VACUUM INTERLOCK/STATUS connector plug
1
2
3
4
5

Sensor status
Sensor statusn.c. (not connected)
Vacuum interlock
Vacuum interlock

6
7
8
9

n.c. (not connected)
n.c. (not connected)
n.c. (not connected)
n.c. (not connected)

 Connect the peripheral components to the VACUUM INTERLOCK/STATUS
connection using a shielded connecting cable.

 Use the switching point output of another vacuum gauge for the vacuum

interlock connection. A pressure value of 1×10-4 mbar is recommended forthe switching point.

3.4 Software

Using the IRC081 requires communication with a PC or laptop.
Both the function control and the measured value processing take place via the
IRC081 User Interface PC software in a LabVIEW environment on the computer. A
RedLab measurement module is built into the IRC081 for data processing and dataexchange with the computer.

 First, install on a PC or laptop the software necessary for operation for the
RedLab module and the IRC081 User Interface.

3.4.1 RedLab measurement
moduleThe RedLab software package is included free-of-charge in the scope of delivery of
the RedLab modules and is available via the supplied USB stick. Alternatively, thesoftware is offered for download on the website of the manufacturer Meilhaus
Electronic: www.meilhaus.de Connect the IRC081 to the PC via USB. The IRC081 does not need to be
switched on for this.

 Once the USB device is recognized, run the install.exe file from the

RedLab_CD_v4_3 folder to install the InstaCal & Universal Library
software component. This software component is required to allow data
logging with the RedLab USB-2408-2AO module integrated in the IRC081.

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The Universal Library Examples are not required.

 After restarting the PC, run the InstaCal program. You can find the programin the Windows start menu under Programs\RedLab.
•

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The measurement module USB-2408-2AO is recognized automaticallyand subsequently appears in the device list.

15

Make sure the board number is zero (Board# 0 – USB-2408-2AO).

 Right-click on this entry and select Configure…. All channels in the AnalogIn Channels tab are of the Voltage type and configured as Single-ended
and with a sampling rate of 25 Hz.
•

These settings are pre-configured and permanently stored in the device
so that no further adjustments are necessary upon delivery.

In case of problems with the commissioning of the RedLab module,
please consult the operating manual in:\RedLab_CD_v4_3\Userguides\de\ RedLab 2408-2AO_de.pdf\RedLab_CD_v4_3\Userguides\en\ RedLab 2408-2AO_en.pdf

3.4.2 IRC081 User Interface
and LabVIEW runtime
environment

The IRC081 User Interface runs in a LabVIEW environment on the PC. All files
needed for installation are located on the supplied USB stick.

 Run the setup.exe file in the IRC081 Installer folder and follow the
instructions.
•16

The installation routine transfers the necessary program files to the
IRC081 folder in the programs folder of your Windows system and installs
the LabVIEW runtime environment (version 2011, 32-bit) by National
Instruments.

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You can find the shortcuts to the IRC081 User Interface on your desktop
and in the Windows start menu under Programs\INFICON.
The configuration file IRC081 UI Configuration.ini is located in the
C:\ProgramData\IRC081 directory after the program is started for the
first time.
The ProgramData directory is a hidden folder by default. When using
Windows Explorer, if necessary, select in the folder options to show
hidden files, folders and drives.

3.4.3 Storage location of thecontroller's calibration
data

During installation of the IRC081 User Interface software, the IRC081
Calibration.ini file is created in the C:\ProgramData\IRC081 directory.

 Upon delivery, this file already contains the calibration data of your controller.
If the controller is later recalibrated, replace this file with the one containing
the new calibration data.

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4 Operation
4.1 User interfaces
4.1.1 Front panel of the IRC081

Figure 6 – Front view of the IRC081
A
B
C
D
E
F
G
H
I
J
K
L

18

USB port for connection to the PC
BIAS knob for setting the cathode bias voltage
WEHNELT knob for setting the Wehnelt voltage
CAGE knob for setting the cage (anode) voltage
DEFLECTOR knob for setting the deflector voltage
FARADAY knob for setting the Faraday voltage
STATUS LED display for USB connection
ACTIVE LED display for USB connection
POWER LED display
FILAMENT OK LED display
INTERLOCK OK LED display
MEASURE LED display

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4.1.2 Main window of the
IRC081 User Interface

Figure 7 – Main window of the IRC081 User Interface
A
B
C
D

E
F
G
H
I
J

Message area for warnings and instructions
Button for erasing the values in the graphs
Checkbox for selecting the display of the current (running) values on the graph
Input window for manual set-up of the measurement range for the ion current
Autorange: checkbox for selection of the automatic adjustment of themeasurement range
Value for gas type correction
Value for the sensitivity of the IRG080 gauge
INTERLOCK OK, FILAMENT OK, POWER, USB ACTIVE status displays
Switch with the MEASURE status display for starting or ending themeasurement
Emission current target value input window
Cross section representation of the IRG080 gauge with• display of the current pressure value• display of the set voltage values• display of the measured current values• display of the transmission rate
• representation of the electron beam path (pressure measurement by
ionization)KL

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Graph display of the current pressure values
Graph display of the current values

194.2 Display

Measurement and operating data are displayed via the IRC081 User Interface.
(→ Figure 7 – Main window of the IRC081 User Interface,  19)

Important messages

Important messages and warnings are displayed as full text in the lower left area of
the IRC081 User Interface (→ Figure 7 – Main window of the IRC081 User
Interface, pos. A,  19).

StatusStatus displays on the front panel of the IRC081 (→ Figure 6 – Front view of the
IRC081, pos. G-L,  18) and in the IRC081 User Interface (→ Figure 7 – Main
window of the IRC081 User Interface, pos. L,  19) provide information about
current standby and operating states. The status displays light up or flash green as
long as the respective status is active.
Display
IRC081
front panel

Display
IRC081
User Interface

Meaning

STATUSUSB connection has been establishedbetween the IRC081 and the PC.
ACTIVEUSB ACTIVE
IRC081 User Interface has started. Dataexchange between the IRC081 and the
IRC081 User Interface is active.
Operational readiness has been
established.
POWER
POWER
IRC081 is switched on.
FILAMENT OK
FILAMENT OK
Filament is OK. If the filament breaks, thestatus display turns off. The measurement
cannot be started.
INTERLOCK OK INTERLOCK OK The safety interlock is not triggered. Safety
interlock and vacuum interlock are closed.
MEASUREMEASURE
Measurement is active.

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Cross section of the IRG080

A cross section of the IRG080 is depicted in the upper right area of the main windowof the IRC081 User Interface (→ Figure 7 – Main window of the IRC081 User
Interface, pos. J,  19).
In this area, the measured pressure, the set voltage values and the measured
current values are displayed.
For improved allocation, the individual display areas or components of the IRG080
are displayed in color during active measurement (→ Figure 8 – Display areas in the
cross section representation of the IRG080,  21).
The current pressure value is displayed as a three-digit floating-point number inpower-of-ten notation by default. The pressure unit is displayed to the right: mbar,
Pa or Torr (→ Figure 8 – Display areas in the cross section representation of the
IRG080, pos. F,  21).
Click on the displayed pressure reading with the right or left mouse button
to change the display unit.

Figure 8 – Display areas in the cross section representation of the IRG080
A

Emission area (shown in red) with• display of the measured emission current

B• text box for entering the target value for the emission current (Em. Set
Value) with input range of 1-1000 µA
Cathode area (shown in magenta) with• display of the set bias voltage (Bias Voltage)C
DE• display of the measured heater current (Heater Current)
Ion collector area (shown in blue) with• display of the measured ion current
Display of the transmission rate (= Faraday current / measured emission
current) as a measure for the accuracy of the adjustment
Faraday area (shown in light blue) with• display of the set Faraday voltage

FG• display of the measured Faraday current
Electron beam path for measurable pressure (shown in red)Deflector area (shown in gray) with• display of the set deflector voltage

HI• display of the measured deflector current
Display area for the current pressure value. When the measurement is switched
off, the Pressure N/A message appears here.
Cage (anode) area (shown in golden yellow) with• display of the set cage (anode) voltageJ• display of the measured cage (anode) current
Wehnelt area (shown in turquoise green) with• display of the set Wehnelt voltage• display of the measured Wehnelt current

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21

Diagrams

The measured values for the pressure and various currents are shown as a functionof time in two diagrams below the sectional view of the IRG080 (→ Figure 7 – Main
window of the IRC081 User Interface, pos. K and L,  19).

Figure 9 – Diagram for displaying the measured values for pressure

Figure 10 – Diagram for displaying the measured values for various currents
The diagram axes and graphs can be configured in a customer-specific manner.
Click on the diagram area with the right mouse button to select ordeselect autoscaling. When autoscaling is deselected, it is possible toinput values when clicking on the scale end values.
Click on the input box next to the entry in the legend with the left mousebutton to make visual changes, such as color, line type or line thickness
changes, to the selected graph.
By default, the colours of the curves correspond to those in the crosssection representation of the IRG080 (→ Figure 8 – Display areas in the
cross section representation of the IRG080,  21).

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4.3 Controls
4.3.1 IRC081

BIAS
WEHNELTCAGE

Measuring and operating data is displayed exclusively via the IRC081.
Settings for the various voltage values can be made via the knobs on the front panelof the IRC081 (→ Figure 6 – Front view of the IRC081, pos. B-F,  18).

The BIAS, WEHNELT, CAGE, DEFLECTOR and FARADAY knobs (→ Figure 11 –Knobs on the front panel of the IRC081,  23) are used to set the values for bias
voltage (BIAS), Wehnelt voltage (WEHNELT), cage voltage (CAGE), deflector
voltage (DEFLECTOR) and Faraday voltage (FARADAY).

DEFLECTORFARADAY

Figure 11 – Knobs on the front panel of the IRC081

The standard parameters are already preset in the delivery state. The
heliport knobs are locked, i.e., the small lever on the right side is at thestop clockwise.
To change the voltage values, proceed as follows: Switch on the IRC081 and establish a connection with the IRC081 User
Interface. Start the measurement.
•

The set voltage values are displayed in the sectional view of the IRG080
in the IRC081 User Interface.

•

The voltages can be measured via the measuring sockets and the GND
socket on the back of the IRC081.

 Unlock the corresponding knob by turning the small lever on the right side
counterclockwise until the stop.
•

The voltage values can be set via the rotary knob.

 Set the desired voltage value via the rotary knob.
•

The set voltage value is displayed in the sectional view of the IRG080 in
the IRC081 User Interface.

•

The set voltage can be measured via the corresponding measuring
socket and the GND socket on the back of the IRC081.

 Lock the corresponding helipot by turning the small lever on the right sideclockwise until the stop.
•

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IRC081.om

The rotary knob can no longer be adjusted.

23

4.3.2 IRC081 User Interface

Settings for the measurement itself and for the display are made via controls andinput elements in the IRC081 User Interface (→ Figure 7 – Main window of the
IRC081 User Interface, pos. B, C, D, H and I,  19).

Figure 12 – Controls and input elements in the IRC081 User Interface
A
B
C
D

MEASUREMEASURE button
Ion Current Measuring Range checkbox and text box
Show Current Graph checkbox
Erase Measurements button

The MEASURE button (→ Figure 12 – Controls and input elements in the IRC081
User Interface, pos. A,  24) is used to start and end the measurement.

 Click on the button MEASURE in the deactivated state to start themeasurement.
•

The measurement is activated.

•

The button is shown with a green background.

•

The sectional view becomes colored and all current and voltage values
are displayed.

 Click on the button MEASURE in the activated state to end themeasurement.

24•

The measurement is deactivated.

•

The button is shown with a gray background.

•

The sectional view turns gray. No measured values are displayed.

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Ion Current Measuring Range

The Autorange checkbox (→ Figure 12 – Controls and input elements in the
IRC081 User Interface, pos. B,  24) is used to select or deselect automatic
selection of the ion current measuring range.

 Click on the checkbox Autorange if the checkmark is not shown.
•

Automatic selection of the ion current measuring range is activated.

•

The checkmark is shown in the checkbox.

•

A manual selection is not possible. The area for selection located above
this is shown in gray.

 Click on the checkbox Autorange if the checkmark is shown.

Show Current Graph•

Automatic selection of the ion current measuring range is deactivated.

•

The checkmark is not shown in the checkbox.

•

Manual selection is possible. Click on the text field to carry out the
selection.

•

Select one of the values and confirm your input with the Enter key.

The Current Graph checkbox (→ Figure 12 – Controls and input elements in the
IRC081 User Interface, pos. C,  24) is used to select or deselect the display of the
diagram for the current values.

 Click on the checkbox Current Graph if the checkmark is not shown.
•The diagram for the current values is displayed.

•

The checkmark is shown in the checkbox.

 Click on the checkbox Current Graph if the checkmark is shown.

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IRC081.om•

The diagram for the current values is hidden.

•

The checkmark is not shown in the checkbox.

25

Erase Measurements

Using the Erase Measurements button (→ Figure 12 – Controls and input elementsin the IRC081 User Interface, pos. D,  24) in the IRC081 User Interface, theaccumulated measured values and the measured values displayed can be erased in
the diagrams.

 Click on the button in the IRC081 User Interface.
•

The Erase Measurements menu window opens.

 Click Erase all to erase all accumulated values.
•

All values are erased. The accumulated measurement values and themeasurement values shown in the diagram are removed.

 Click Erase until to erase values up to a defined point in time. To this end,choose the desired time in the selection box to the right.

You can also define the time until which you would like to erase values inadvance by clicking on the corresponding time in the progression chart. Thisvalue is automatically transferred to the selection box.
•

Em. Set Value

Only the measurement values that have accumulated up to the chosen
time and the measurement values shown in the diagram are removed.

The Em. Set Value text box (→ Figure 7 – Main window of the IRC081 User
Interface, pos. I,  19) is located within the sectional view of the IRG080 and isused to input target values for the emission current.

 Click on the text box Em. Set Value.
 Enter a value between 1 and 1000 µA and confirm the input with the Enter
key.
•

26

The emission current is adjusted to the entered value.

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4.4 Switching on and off
4.4.1 Switching on

 Switch on the power switch on the IRC081 (→ Figure 3 – Rear view of the
IRC081, pos. F,  10).

•The POWER status LED on the front panel of the IRC081 is green.

•

If the IRG080 is properly connected with an intact filament, theFILAMENT OK status LED lights up green.

•

When an interlock is connected, the INTERLOCK OK status LED lights
up green.

•

After the USB connection with the PC is established and the IRC081
User Interface has started up, the device is ready for measurement.
For operation, both the safety interlock and the vacuum interlock must be
closed.
You can also switch the IRC081 on and off via a central power distributor.

4.4.2 Switching off Switch off the power switch on the IRC081 (→ Figure 3 – Rear view of the
IRC081, pos. F,  10).

•The POWER status LED on the front panel of the IRC081 goes out.

•

The FILAMENT OK status LED on the front panel of the IRC081 goesout.

•

The INTERLOCK OK status LED on the front panel of the IRC081 goesout.
Measurement is no longer possible, even if the IRC081 User Interface
program is still open.

4.4.3 Wait time

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Wait at least 10 seconds before you switch on the IRC081 again.

27

4.5 Measurement operation
4.5.1 Program start Make sure the connection between the PC and the USB port on the IRC081
has been established.

 Start up the IRC081 User Interface program on the PC.

28•

The program window opens.

•

The sectional view of the IRG080 is shown in gray as long as
measurement is not active.

•

The STATUS and ACTIVE LED displays for the USB port on the front
panel of the IRC081 light up or flash green.

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4.5.2 Configuration andpreparation

All program settings are stored in the IRC081 UI Configuration.ini file in the
C:\ProgramData\IRC081 directory and loaded when the program starts up.
Various configuration windows can be opened in the menu under Configuration.

Gas Type

The Gas Type parameter makes it possible to define a correction factor for thepressure calculation that depends on the gas type.

 Choose the Gas Type menu item in the Configuration menu in the menu bar.

•

The Gas Type Configuration menu window opens.

 In the Gas Type Configuration menu window, enter the value for acorrection factor in the Correction Factor entry field.
Alternatively:
Enter various gas types with their respective sensitivities and the proportional
share in the window.

If a measurement is for a pure gas from the entered list, it can beselected by clicking on the blue LED to the left. The proportion
values are automatically set to 1 or 0.

 Confirm the entries with  Save & Close.

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IRC081.om•

The values are adopted and applied.

•

The set value is displayed in the main window of the IRC081 User
Interface.

29

GaugeThe sensor sensitivity (in 1/mbar) and the maximum filament heater current forprotecting the IRG080 are entered via the Gauge parameter.

 Choose the Gauge menu item in the Configuration menu in the menu bar.

•

The Gauge Configuration menu window opens.

 In the Gauge Configuration menu window, enter the value for the sensor
sensitivity in the Gauge Sensitivity entry field.

The value for the sensor sensitivity is included with the IRG080.

 In the Gauge Configuration menu window, enter the value for the maximum
heater current in the Maximum Heater Current entry field.

 Confirm the entries with  Save & Close.

Smoothing•

The values are adopted and applied.

•

The set values are displayed in the main window of the IRC081 User
Interface.

The Smoothing parameter makes it possible to average the measured values
across a certain number of measured values.

 Choose the Smoothing menu item in the Configuration menu in the menu
bar.

•

30

The Smoothing Configuration menu window opens.

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IRC081.om In the Smoothing Configuration menu window, enter the value for thenumber of measured values to be averaged in the Averaging entry field.
•

The applied number of averaged values is displayed in the Numberof averaged values field, the standard deviation (deviation of themeasured values from the average) in the Standard Deviation
field. In the graph below these fields you can follow how the chosen
averaging affects the pressure output measured value.

 Confirm the entries with  Save & Close.
•

Emission current

The values are adopted and applied.

The target value for the emission current can be adjusted in a range of 1 – 1000 µA.
Use the Em. Set Value text box (→ Figure 7 – Main window of the IRC081 User
Interface, pos. I,  19) in the sectional view of the IRG080 in the main window of
the IRC081 User Interface for input (→ 4.3.2
IRC081 User Interface, Em.
Set.Value,  24 ff.) et seq.).
The target value is adopted immediately by leaving the entry field or by confirming
an entry value using Enter. The actual emission current can be read off from this.
If the actual emission current does not reach the target value during
measurement operation, the heater current may be at the specified upper
limit or the voltages set on the IRC081 (bias, Wehnelt, cage, Faraday,
deflector) are unsuitable.

Ion current measuring range

The ion current measuring range is chosen by default (Autorange activated). By
deactivating the Autorange function, the measuring range can be predefined, forexample to obtain a continuous measurement signal in the pressure range near ameasurement range switchover.
Use the Autorange checkbox (→ Figure 12 – Controls and input elements in the
IRC081 User Interface, pos. B,  24) to select or deselect automatic selection of
the ion current measuring range (→ 4.3.2 IRC081 User Interface, Ion Current
Measuring Range,  24 et seq.).

4.5.3 Measurement

 Switch on the IRC081 using the power switch of the grid input combinationon the back of the device.
•

The POWER status LED on the front panel of the IRC081 is green.

 Press the MEASURE button in the main window of the IRC081 User
Interface.
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IRC081.om

The measurement is started.
31

•The sectional view of the IRG080 is shown in color, as is a symbolic
electron beam.

•

The four status LEDs in the main window of the IRC081 User Interface
light up green, the MEASURE, INTERLOCK and FILAMENT OK status
LEDs on the front panel of the IRC081 also light up green.

If at least one LED does not light up, check the requirements inthis order:
StatusReason for Error

INTERLOCK OK

The power-on release is given via the bridge at theInterlock/Status port of the IRC081.
The IRG080 is connected, the filament is functional.
The IRC081 is supplied with voltage and switched on.
The IRC081 is connected via USB and the RedLabdriver software was correctly installed and set up.

FILAMENT OK
POWER
USB ACTIVE

 Press the MEASURE button in the main window of the IRC081 User
Interface in the switched-on state.
•

Note

The measurement is ended.

Automatic safety shutdown.
The measurement is terminated automatically if the measured pressure exceeds avalue of 1×10-2 mbar.

32

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4.5.4 Data storage
Settings

All settings for data storage are defined in the Logging menu.

The Settings menu item can be used to make settings for the log files to be saved.

 Choose the Settings menu item in the Logging menu in the menu bar.

•

The Logging Settings menu window opens.

 Make the desired settings in the Logging Settings menu window.

Autosave is activated in the basic settings. Every minute, a data
package with the accumulated values is saved. By default, thevalues are recorded in the C:\ProgramData\IRC081 directory.
If you deactivate Autosave, please use the Save log … function tosecurely store the data.
With Autosave deactivated, the accumulated values are lostwhen the program is closed.
By adjusting the Date and Time Syntax, you can specify theformatting of the first Date and Time column of the log files to be
stored as desired.
Under Logging interval, you can adjust the frequency at whichmeasurement values are recorded. You can choose to save thevalue in the log file every 1 (default setting), 2, 5, 10, 30 or 60
seconds.
The columns in the file are tab delimited and can easily beprocessed further in a spreadsheet program at a later time using
the copy & paste or import functions.

 Confirm the entries with  Save & Close.
•

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IRC081.om

The values are adopted and applied.

33

Save log …

A log file is created on your PC via the Save Log … menu item.

 Choose the Save Log menu item in the Logging menu in the menu bar.

•

The Choose a filename to save log data menu window opens.

 Use the automatically generated file name or enter your own file name andconfirm with OK.

•

Erase Measurements

The data package is stored.

The accumulated data is erased via the Erase Measurements menu item. The
same function is stored as for the Erase Measurements button (→ 4.3.2
IRC081 User Interface, Erase Measurements,  24 et seq.).

 Choose the Save Log menu item in the Logging menu in the menu bar.

•

The Erase Measurements menu window opens.

 Click Erase all to erase all accumulated values.
•34

All values are erased. The accumulated measurement values and themeasurement values shown in the diagram are removed.

tinb82e1(2023-10)

IRC081.om Click Erase until to erase values up to a defined point in time. To this end,choose the desired time in the selection box to the right.

You can also define the time until which you would like to erase values inadvance by clicking on the corresponding time in the progression chart. Thisvalue is automatically transferred to the selection box.
•

4.5.5 Diagnosis

Only the measurement values that have accumulated up to the chosen
time and the measurement values shown in the diagram are removed.

For diagnosis purposes, a window can be displayed that shows the unprocessedvoltage values of the 16 analog input channels of the measurement module.

 Choose the AI Voltages menu item in the Diagnosis menu in the menu bar.

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IRC081.om

The unprocessed voltage values of the 16 analog input channels of themeasurement module are displayed.

35

4.5.6 Software information

Notes on the software version are displayed in the Info window.

 Choose the Info menu in the menu bar.

•

36

The Info window with information on the software is displayed.

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5 Maintenance, service and operating parameter check
5.1 Maintenance

The IRC081 does not require any special maintenance work.

5.1.1 Cleaning

For external cleaning, a slightly damp cloth is usually sufficient. Do not use
aggressive or abrasive cleaning agents.

Danger

5.1.2 Periodic inspections

Supply voltage.
The IRC081 contains live components. Direct or indirect contact with thesecomponents leads to fatal injuries.
Do not insert any objects into the openings in the device. Protect the device against
moisture. Do not open the device.

•

Visual inspection of the device for damaged or deformed housing and plugconnector and damaged lead insulation.

•

Inspection of protection equipment.

•

Electrical visual inspection in accordance with national/international
standards or internal specifications.

•Inspection of the PE conductor connection with the housing.

5.2 Troubleshooting
5.2.1 Fault display

Warnings or fault messages are issued via the user interface.

5.2.2 Help in case of faults

If the fault persists even after the gauge is replaced or repaired, please contact yournearest INFICON AG service center.
If faults cannot be remedied, you must decommission the IRC081 and protect itagainst accidental commissioning.

5.2.3 Fuse replacement

To replace defective device fuses, only use the fuse type T1.6A H as indicated on
the back of the device.
The two device fuses are located in the fuse holder on the network filter (→ Figure 3– Rear view of the IRC081, pos. F,  10). The fuse can be removed using a small
screwdriver.

5.2.4 Repair

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Defective products must be sent to the nearest INFICON AG service center for
repair. INFICON AG denies all responsibility and warranty if the operator or third
parties perform maintenance work on the IRC081.

37

5.3 Checking operating
parameters

To guarantee measurement accuracy, it is important to check periodically thesensor operating parameters .

5.3.1 Voltages

The operating voltages of the IRG080 sensor can be accessed on the back withCAT III measuring sockets (→ Figure 3 – Rear view of the IRC081, pos. B-E and
I-K,  10).

Warning

Dangerous contact voltage.
Voltages above 60 V (dc) or 25 V (ac) are dangerous to contact and can cause
serious injuries.
Use the included shockproof measuring lines and a suitable meter for voltage
measurement.

 Commission the IRC081 with the IRG080 and start the measurement.
 To measure and check the operating voltages, connect the corresponding
measuring sockets to a calibrated voltmeter.

To this end, use the included shockproof measuring lines.
Make sure that the used voltmeter allows voltages up to 400 V (dc).

 Compare the displays on your voltmeter to the display values in the sectionalview of the IRG080 in the main window of the IRC081 User Interface (bias –shown in magenta, Wehnelt – shown in turquoise green, cage (anode) –shown in golden yellow, deflector – shown in gray, Faraday – shown in lightblue).
If you find deviations of more than 0.1%, the device should be recalibrated.
Please contact your nearest INFICON AG service center.

Note

5.3.2 Ion collector current

Measurement error.
Please note that the current displays also show the current through the voltmeter.
When measuring the bias voltage, the emission current typically increases by
50 V/10 MΩ = 5 µA.

 Switch off the IRG080 by ending the measurement and unplug the BNC
connector of the measuring line from the IRC081.
•

The interlock is now triggered.

 Connect a calibrated power source to the BNC socket on the back of the

IRC081 and activate the Ion Current field under the Diagnosis menu item in
the IRC081 User Interface.

 Supply currents of up to a maximum of 40 µA and compare the display valueof the collector current (Ion Current – shown in blue) to the supplied current
in the cross section representation of the IRG080 in the main window of the
IRC081 User Interface.
The measurement range of the IRC081 is also displayed.
If the deviation between the supplied current and the display is greater than
0.1% of the range final value, the device should be recalibrated. Pleasecontact your nearest INFICON AG service center. In the 50 pA range, theerror limit is 0.5% of the final value.

38

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IRC081.om

5.3.3 Emission current

 Switch off the IRG080 by ending the measurement. Connect the BNC

connector of the measuring line to the IRC081 again and switch the IRG080
back on by starting the measurement.

 In the cross section representation of the IRG080 in the main window of the
IRC081 User Interface, read the display values for the current at Faraday
Cup (Faraday – shown in light blue) and cage (anode) (Cage – shown ingolden yellow) and form the sum from this.

If the sum deviates from the measured emission current by more than 0.1%,
the device should be recalibrated. Please contact your nearest INFICON AG
service center.
The measured value for the emission current (Emission – shown in red) isalso displayed in the schematic representation of the IRG080 in the display
window of the user interface.

6 Storage, disposal
6.1 Packaging

Please keep the original packaging. You will require this packaging if you want tostore the IRC081 or send it to an INFICON service center.

6.2 Storage

The IRC081 may only be stored in a dry space. The following ambient conditions
must be observed:
Ambient temperature:
Humidity:

6.3 Disposal

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IRC081.om-20 to +60 °C
As low as possible. Preferably use an air-tight plastic
bag with a desiccant.

The industry-specific and local disposal and environmental regulations for systems
and electronic components apply to disposal.

39

7 Accessories
GaugesHeat resistant gauge head cableset to IRG080

Item

Ordering
NumberIon Reference Gauge IRG080, USB 2.0
incl. 2 x measuring lines CAT III (1 m, red/black), USB TypeA/B cable, USB stick with software and instructions, D-sub 9pin port

399‑874

Item

Ordering
Number

5 m, with contact protection

399‑883

10 m, with contact protection

399‑884399‑885

15 m, with contact protection

Shockproof measuring line

Transport

40

Item

Ordering
NumberShockproof measuring line, CAT III, 1 m, black

399‑887

Shockproof measuring line, CAT III, 1 m, red

399‑888

Item

Ordering
NumberTransport case399‑895

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Appendix
A:

Standard parameters
IRC081

User interface

Parameter

Value

Bias voltage (BIAS)
Wehnelt voltage (WEHNELT)
Cage (anode) voltage (CAGE)
Deflector voltage (DEFLECTOR)
Faraday voltage (FARADAY)

50 V
34 V
250 V
45 V
280 V

Parameter

Value

Emission current (emission)

30 µA

The voltage and current values preset as standard parameters correspond to thespecifications in the instruction manual of the Ion Reference Gauge IRG080(→  [1]).
These values can be changed depending on the user requirements.
However, as a result, the operating behavior of the Ion Reference Gauge
IRG080, in particular its sensitivity and beam parameters, is affected.
In case of unfavorable settings, the space charge of the electrons canlead to a sharp increase in the filament current. To prevent filament
damage , the heater current is limited to 2.0 A by the IRC081 User
Interface.
Normally, more than 95% of electrons reach the Faraday cup and a small
portion falls on the cage. Wehnelt and deflector should remain deenergized.

B:

Program library
Dynamic program library

In the C:\Programs (x86)\IRC081 directory, there is a dynamic program librarycalled IRC081_data_exchange.dll that allows other Windows software to accessvarious measured values while running the IRC081 User Interface.

Overview of implemented
functions

Function nameParameter[data type]

Getpressure---

Measuring---Getvalues

Selector[Unsigned Integer 8 bit]
0 or >512
3
4
5

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Return value[data type; value when measurement
inactive]

Pressure in mbar [double; NaN]

0 or 1 for measurement inactive or
active[integer 32 bit; 0]
Pressure or current value [double]
Pressure in mbar [;NaN]
Pressure in Pa [;NaN]
Pressure in Torr [;NaN]
Heater current in A [;0]Emission current in A [;0]Ion current in A [;0]

41

C:

Conversion table
Pressure units(vacuum technology)

mbar

Bar

Pa

hPa

kPa

Torr
mm Hg

mbar

1

100

1

0.1

0.75

Bar
Pa

1×103

1×105

1×103

1

0.01

hPa

1

1×10‑31
1×10‑5100

1100
1×10‑30.1

750
7.5×10‑3
0.75

1×103

10

1

7.5

1.33320.1332

1

kPa
Torr
mm Hg

0.01
10
1.332

1×10‑30.01

1.332×10‑3 133.32

1 Pa = 1 N/m2

D:

42

Further Information

 [1]www.inficon.com
Operation Manual
Ion Reference Gauge IRG080
tinb74e1
INFICON AG, LI–9496 Balzers, Liechtenstein

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IRC081.om

EU Declaration of Conformity
We, INFICON, hereby declare that the equipment mentioned below complies withthe provisions of the following directives:

Product•

2014/35/EU, OJ L 96/357, 29.03.2014•

2014/30/EU, OJ L 96/79, 29.03.2014•

2011/65/EU, OJ L 174/88, 01.07.2011(Low Voltage Directive; directive on electrical equipment designed for use within certain voltage limits)(EMC Directive; directive on electromagnetic compatibility)(Restriction of Hazardous Substances Directive; directive on the restriction of the use of certain
hazardous substances in electrical and electronic equipment)

Ion Reference Gauge Controller
IRC081(operation with the Ion Reference Gauge IRG080)

Standards

Harmonized and international/national standards and specifications:••

Manufacturer / Signatures

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IRC081.om

EN 61010-1:2010 + A1:2019 + A1:2019/AC:2019(Safety requirements for electrical equipment for measurement, control, and laboratory use)

EN 61326-1:2013; Group 1, Class B(EMC requirements for electrical equipment for measurement, control and laboratory use)

INFICON AG, Alte Landstraße 6, LI-9496 Balzers
3 January 2023

3 January 2023

Dr. Christian Riesch
Head of Development

Dr. Roberto Salemme
Product Manager

43Original: German tinb82d1 (2023-01)

LI–9496 Balzers
LiechtensteinTel +423 / 388 3111
Fax +423 / 388 3700
reachus@inficon.com
www.inficon.com