Publication: INFICON AB - nipa60e1-a (1202) - All information can be modified without prior noticeSensistor ISH2000

HYDROGEN LEAK DETECTOR

Technical Reference ManualGeneral content
A 100 Introduction to the Sensistor ISH2000 series ................................................ 5
A 300 Sensor Technologies working principle ......................................................... 6
A 400 Testing methods .......................................................................................... 7
A 401 About Hydrogen .......................................................................................... 9A 600 Options ..................................................................................................... 10
A 700 Sensistor ISH2000 Components ................................................................. 11
A 701 Spare parts and accessories ........................................................................ 17
A 800 Sensistor ISH2000 - Technical specifications ............................................... 22
A 900 Dimensions ................................................................................................ 25
B 100 Safety instructions ...................................................................................... 29
B 110 Supplies and storage .................................................................................. 30
B 210 Connecting the detector to the installation ................................................ 31
B 300 Controlling the detector with the I/O interface ........................................... 33
B 310 Controlling the detector with a PC computer through the RS 232 interface 37
B 320 Connecting the detector directly to a printer or another device .................. 40
C 100 Getting started with the leak detector ....................................................... 45
C 200 Control panel ............................................................................................ 46
C 201 Menu system ............................................................................................. 48
C 210 Password ................................................................................................... 54
C 211 Operation of the leak detector ................................................................... 55
C 300 Calibration of the leak detector ................................................................. 57
C 304 Correlation value ....................................................................................... 62
C 305 Reference values settings ........................................................................... 63
C 410 Headphones .............................................................................................. 64
C 500 Factory configuration of the leak detector parameters ............................... 65
C 570 Date - Time - Language - Unit .................................................................... 67
C 580 Service mode och debug mode .................................................................. 68
D 100 Preventive maintenance ............................................................................. 73
D 200 General troubleshooting guide .................................................................. 74
D 300 Reference leak trouble guide ..................................................................... 76
E 100 Maintenance operations introduction ......................................................... 79
E 120 Sending the leak detection for repair to a service center ............................. 80
E 130 Functional verification ................................................................................ 81
E 140 Service menu .............................................................................................. 84
E 160 Software and documentation evolution ...................................................... 85
E 230 Sensistor ISH2000 Main board .................................................................... 86
E 410 Instrument maintenance ............................................................................. 88
E 411 Probe maintenance .................................................................................... 99
F 100 Service ...................................................................................................... 103
F 110 Disposal of product when taken out of service .......................................... 104
F 800 Tools ........................................................................................................ 105

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 2

EN- 3

Sensistor ISH2000 Technical Reference Manual (TRM)

A

Introduction
Sensistor ISH2000 Technical Reference Manual

Detailed content

A 100

Introduction to the Sensistor ISH2000 series

A 300

Sensor Technologies working principle

A 400

Testing methods

A 600

Options

A 700

Accessories

A 800

Sensistor ISH2000 - Technical specifications

A 900

Dimensions

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 4

A 100A 100 Introduction to the Sensistor ISH2000 series
Sensistor ISH2000 can be purchased in one of three versions. A desktop model(Sensistor ISH2000), a battery operated model (Sensistor ISH2000C), and apanel mount model (Sensistor ISH2000P).

Sensistor ISH2000

Figure A-1: Sensistor ISH2000

Sensistor ISH2000 is equipped with a number of powerful functions making itvery easy to integrate in a semi or fully automatic test system. The functions
range from output of all necessary status signals and printer/communication
port to an advanced Active Probe Control system (APC). This makes the detector capable of controlling advanced sample collecting devices down to simple
test fixtures.

Sensistor ISH2000C

Figure A-2: Sensistor ISH2000C

The battery operated model, Sensistor ISH2000C, has all the Sensistor ISH2000
features apart from the APC system. This means that only passive probes (forexample Hand Probe P50) can be used. The battery, a Li-ion battery at 14.8 V,
can not support the current required to operate external probes. Sensistor
ISH2000C will operate for 14 hours on a fully charged battery with screensaver
and mute function. One hour charging will give about one hour of operatingtime.

Sensistor ISH2000P

Figure A-3: Sensistor ISH2000P

The panel mount model, Sensistor ISH2000P, has identical features of the Sensistor ISH2000.The difference is that the Sensistor ISH2000 can be installed in

EN- 5Sensistor ISH2000 Technical Reference Manual (TRM)A 300the operator’s panel or any other flat surface. Also it operates on +24 VDC.
Mounting brackets and a panel rubber seal are delivered with the detector.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 6

A 400A 300 Sensor Technologies working principle
Sensor Technology
The Sensistor ISH2000 leak detector is using SENSISTOR sensor technology
inside. SENSISTOR sensor technology uses an extremely sensitive hydrogen gas
sensor based on a microelectronic field effect transistor (MOS-FET).
The gas sensitivity appears when hydrogen absorbs into the sensor through ametal alloy (metal hydride) layer.
Only hydrogen can diffuse into the metal and this makes the sensors practicallyinsensitive to other substances that do not contain free hydrogen molecules.
The signals from the sensors are processed by a microprocessor which also controls the sensor temperature with high accuracy, and other sensor diagnostics inorder to ensure perfect functionality. It also automatically compensates forbackground gas.

EN- 7

Sensistor ISH2000 Technical Reference Manual (TRM)A 400A 400 Testing methods
To Detect leaks
If all you wish to do is to detect the presence of a leak, that is, find out whether
there is a leak or not, then use the Detection Mode (or use the detection bar in
Combined Mode). The definition of Leak/No Leak will then simply be "A leak is
a leak when it can be detected by the detector, set to a specific sensitivity".
To set up:
The operation in Detection Mode is not quantitative. The audio and visual signal will increase and decrease with the gas concentration. Therefore, there is no
actual calibration to be done, but rather a setting of the sensitivity to a desired
level.
A typical set-up procedure for Detection Mode is:• Set up a reference leak which corresponds to the smallest leak you wish todetect.
• Put the probe close to the reference leak and note approximately what reaction you get (no reaction, small, medium, high, full scale) within the first few
seconds.
• Set the sensitivity. This can be done permanently under the menu Detection
Mode Settings or temporarily as a Direct Sensitivity Adjustment on the display(unless you have set this function to OFF under the Detection Mode Settingsmenu).
There is also an Auto ranging function which can be selected under the Detection Mode Settings menu.
Note: If the Detection Mode is used and the alarm function is required to be
activated at a particular calibrated level, then the unit must be calibrated inaccordance with the instructions, see "Calibrate the leak detector" on page 17.
The reason for this is that the alarm is based on the Analysis Mode when the
Detection Mode is displayed.

To Locate Leaks
Note: The Detection Mode (or use the detection bar in Combined Mode) isused to locate leaks. This mode is semi-quantitative, that is, it gives an audio
and visual signal which increases as a leak is approached (a higher gas concentration) and decreases as you move the probe away from the leak. It does not
display figures. In this mode of operation leaks can easily be detected using asensitivity which can be preset.
Leaks can be located very accurately, even when there are other leaks nearby. If,
for example, you are trying to locate a leak on a product and the product has amajor leak, then you will get an audio signal as soon as the probe is placed
close to the product.
When the probe is moved around and over the product, the signal will increaseas the probe approaches the leak. If the signal goes out of scale, simply reduce
the sensitivity setting to bring the signal within the scale. Working with the sensitivity setting this way you will be able to locate multiple leaks that are in close
proximity to each other.
Note: Working inside a confined space such as, for example, a cabinet or a narrow passage on a combustion engine there is a risk that the background concentration accumulates to levels close to the upper detection limit of thedetector. In such case it will not be possible to locate leaks as easily as in open
spaces.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 8

A 401
Hint: It is good practice to detect a leak, locate it, and immediately remove theprobe to avoid saturation. The probe is not damaged by the exposure but it will
recover more slowly. After excessive exposure it will be less sensitive for a shortperiod of time.

To Quantify Leaks
The Analysis Mode (or use the analysis figures in Combined Mode) is used formeasuring the size of a leak (or the concentration of a gas sample). To be able
to do this measurement and obtain correct values, the instrument must first be
calibrated using the calibration function.
In the Analysis Mode the detector determines the gas concentration from thechange, as the probe goes from being exposed to background to being
exposed to a certain gas concentration. The detector does not continuously
monitor the gas concentration but takes just one reading instead. Another suitable alternative name for this mode could be Sampling Mode. It is important tokeep this in mind when using the detector in this mode.
In Analysis Mode the probe should be moved directly from a background situation to the test point. The size of the leak in PPM, or any other selected units, isshown on the display. The probe can and should be removed from the measuring point as the measured value steadies and remains on the display. The period
during which the measured value is displayed can be adjusted in the Analysis
Mode Settings menu.

EN- 9

Sensistor ISH2000 Technical Reference Manual (TRM)A 600A 401 About Hydrogen
When pure hydrogen gas is released in air its flammability range spans from 4%
to 75% of hydrogen in air. Below 4% there is insufficient chemical energy available for a flame to occur. Above 75% hydrogen there is not enough oxygen left
to support a flame. When, for example, a mixture of less than 5.5 % hydrogenin nitrogen mixes with air there is not sufficient energy to support a flame, irrespective of the ratio of air-to-gas. When a mixture of more than 5.5 % hydrogen in nitrogen is released into air there is a region of ratios of air-to-gas where
the mixture is flammable. When, for example, a mixture of 10% hydrogen innitrogen mixes with air there is still very little energy available. Only in exceptional circumstances can a flame be self-supporting. However, such mixtures
cannot detonate.
Hydrogen can be stored and transported as either a gas a cryogenic liquid.
The tracer gas is standard welding gas of industry quality, easy to obtain at low
cost. The generic name is Forming Gas.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 10A 700A 600 Options

Table model
Portable model
Panel model
Hand probe P50
3 m C21 cable
Power supply cable
Battery recharger
Cary case
Probe control port

EN- 11

Sensistor ISH2000 P

Sensistor ISH2000 C

Sensistor ISH2000

Which options for which model?

t
t
t
t t
t t
t
t
t
t
t

Sensistor ISH2000 Technical Reference Manual (TRM)A 700A 700 Sensistor ISH2000 Components

Green diodeRed diodeRed diode

Green diodeSensistor ISH2000

Figure A-4: Sensistor ISH2000 components

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 12

A 700Sensistor ISH2000 components according to Figure A-4: on page 12.
Position

P/N

Position

P/N

Position

P/N1

598-17021591-49341591-8122591-77022591-49942591-6073

591-49623591-49443598-1674

591-77124

598-16644591-5785591-53325

591-50245

591-7746591-77326

591-50346

591-0137

591-77927

591-48747591-7778591-78028

591-48848

591-5389598-12129

591-49049

591-78110591-50130

591-78650

591-77211591-50031

591-49751

598-17712591-51532

591-79652

591-80913

598-04333

591-79753

591-57714

591-79134

591-79854591-31715591-79035

591-78755

598-17317591-77536

598-17456591-81018591-77837591-26657

591-01719591-53238

591-52758

591-14220

591-49240

591-482

EN- 13

Sensistor ISH2000 Technical Reference Manual (TRM)A 700Red diode

Green diodeRed diode

Green diodeSensistor ISH2000C

Figure A-5: Sensistor ISH2000C components

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 14

A 700Sensistor ISH2000C components according to Figure A-5: on page 14.
Position

P/N

Position

P/N

Position

P/N1

598-17019591-53236

598-1742591-77020591-49237591-2663

591-49821591-49338591-5274591-77122591-49939

598-1785591-53323591-49440

591-7826591-77324

598-16641591-3287591-77925

591-50242591-4528591-78026

591-50343591-8069598-12127591-29844591-32710591-50128

591-48845598-17211591-500

29

591-49046591-53812591-51530

591-78648

591-78513598-04331

591-49749

591-80714

591-79132

591-79650

598-17315591-79033

591-79751

591-77717591-77534

591-79852

591-81018591-77835

591-78753

591-810EN- 15

Sensistor ISH2000 Technical Reference Manual (TRM)

Sensistor ISH2000 Technical Reference Manual (TRM)

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A 700

Sensistor ISH2000P

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Figure A-6: Sensistor ISH2000P components

EN- 16

A 701
Sensistor ISH2000P components according to Figure A-6: on page 16.
Position

P/N

Position

P/N

Position

P/N1

598-17014591-79129

591-490.

2591-77015591-79031591-4973

591-49816591-80832

591-7964591-77118591-77833

591-7976591-77319591-53234

591-7987

591-77920

591-49235

591-7878591-78021591-49336

598-1749598-12122591-49937591-53810591-50123

591-49438

591-52711591-500

24

598-16639

591-81012591-51525

591-77613598-04326

591-298

EN- 17

Sensistor ISH2000 Technical Reference Manual (TRM)A 701
A 701 Spare parts and accessories
AP29ECO Sampling Probe
For automatic leak testing of entire products or parts of products. Can also be used
for testing permeability of materials.

Part No:590-035

AP55 Sniffer Probe
For fast manual leak location in hard to-reach places. Active probe that sniffs the
sample air past the hydrogen sensor in the probe tip.

Part No:590-550

AP57 Counter Flow Probe
For leak detection in enclosed spaces or in environments with a high backgroundlevel of tracer gas. An adjustable air flow from the probe tip provides a protective air
curtain against tracer gas in the surroundings.

Part No:

Sensistor ISH2000 Technical Reference Manual (TRM)

590-555

EN- 18

A 701
P50 Hand Probes

Hand Probe P50 with rigid neck.

Part No:590-780

With a flexible neck. Facilitates leak detection in hard-to-reach places.

Part No:590-790

H65 Insert Sensor
Replaces the standard hand probe in automated tests.

Part No:590-250

Probe Tip Protection Cap and filter
For Hand Probes P50 and P50-FLEX.
Part No:

EN- 19591-273 (Probe Tip Protection Cap, set of 50)
590-625 (Probe Tip Protection Cap, set of 500)
591-234

Sensistor ISH2000 Technical Reference Manual (TRM)A 701
ComboxThis page intentionally left blank

Probe adapter for AP29ECO, H65, AP55 and AP57.

Part No:590-820

C 21 Probe Cables
In various lengths for comfortable leak detection in every situation.

Part No:

Sensistor ISH2000 Technical Reference Manual (TRM)

590-161 (3m)
590-175 (6 m)
590-165 (9 m)
590-163 (4 m, spiral)
590-164 (6 m, spiral)EN- 20A 701
Reference Leaks
Large and small, with certificate, for calibration and function tests of the Sensistor
ISH2000.

Part No:590-420590-421590-422590-427590-429Type A
Type B
Type CType D
Type G

5x10-2 atm ml/s
5x10-3 atm ml/s
5x10-4 atm ml/s
10 g/a R134a
3 g/a R134a

Power cables
Power cables for Sensistor ISH2000
Part No:591-146 (Power cable eu)
591-147 (Power cable uk)
591-853 (Power cable us)

Fuse
2 A slow for Sensistor ISH2000
Part No:EN- 21591-578

Sensistor ISH2000 Technical Reference Manual (TRM)A 800Carrying case

For Sensistor ISH2000C

Part No:591-329

Battery charger
For Sensistor ISH2000C
Part No:591-795

Hand Probe sensor
Sensor, for sensor replacement on P50 Hand Probe.

Part No:590-292

Mounting kit
For Sensistor ISH2000P inkluding Brackets and seals.
Part No:590-810

Phoenix connector to Sensistor ISH2000P
For Sensistor ISH2000P, power connection.
Part No:591-792

O-ring seal
For Sensistor ISH2000P.
Part No:

Sensistor ISH2000 Technical Reference Manual (TRM)

591-528

EN- 22

A 800
A 800 Sensistor ISH2000 - Technical specifications
Power supply specifications

Power

Sensistor ISH2000

AC mains voltage

100-240 V 50/60Hz.

AC mains voltage to thecharger
AC mains current

Sensistor ISH2000C

100-240 V50/60 Hz

Typically 1 A (2 A pulse at
power on).

AC mains current to thecharger

Sensistor ISH2000P-

Typically 300 mA

-

Fuse

2 A slow/ 250 VAC.

--

Nominal battery voltage-

16.1 VDC (nominal). The unit
will shutdown at approx.
12VDC, and will be operational at approx. 14VDC-

Operating time

-

8h

-

Charging time

-

6.5 h

-

Power supply voltage--

24 VDCPower supply current--

3 A max

Sensistor ISH2000

Sensistor ISH2000C

Sensistor ISH2000P

AC input connector, IES 320.

Charger input connector, 2.1
x 5.5 mm std. Positive centre.

4 pin Phoenix MC 1.5/5.81
Series Detachable screw terminal.

Minimum pulse length

40 ms

-

40 ms

Input impedance

50k ohm-

50k ohm

Input maximum range-34 to +38 VDC--34 to +38 VDC

Input high> 12.0 VDC-> 12.0 VDC

Input low

< 8.0 VDC-

< 8.0 VDC

Output current

max 0.5 A/output, max 2.5 A
total

-

max 0.5 A/output, max 2.5 A
total

Inductive loads

External clamp diodes
recommended-

External clamp diodes recommended

Low stage voltage

Max 1.5 VDC-

Max 1.5 VDC

Input and output connections

Type
GeneralPower input connector

Probe control port inputs

Probe control port outputs

EN- 23

Sensistor ISH2000 Technical Reference Manual (TRM)A 800Type

Sensistor ISH2000

Sensistor ISH2000C

Sensistor ISH2000P

Short circuit protection

Thermal and electronic-

Thermal and electronic

Output high22-24 VDC-

> (Supply voltage – 2.5 VDC)

Output low< 1.5 VDC-

< 1.5 VDC

Connector

9-pol D-sub male

9-pol D-sub male

9-pol D-sub maleStandard

RS232

RS232

RS232

25-pin D-sub female

9-pin D-sub female-

Serial communication port

Probe control/Status port
Connector

Miscellaneous specifications

Misc

Sensistor ISH2000

Sensistor ISH2000C

Sensistor ISH2000P

Protection (IEC529)

IP64 (front), IP32 (back)

IP63 (in carrying case)

IP64 (front), IP32
(back)Net weight

3.9 kg (8.6 lb)

4.0 kg (8.8 lb)
4.9 kg (10.8) incl. case,probe and charger

1.8 kg (4.0 lb)

Overall dimensions

275 x 155 x 170 mm(11 x 6 x 7 inches)

275 x 190 x 170 mm(11 x 7 x 7 inches)

275 x 140 x 75 mm(11 x 6 x 3 inches)

Environment
temperature

0-50°C

0-50°C

0-50°C

Environment
humidity

10-90% RH

10-90% RH

10-90% RH

Gas sensing specification (In Detection Mode)

Selected unit

Sensitivity

mbarl/s air (using 5% H2/
95% N2 asTracer Gas)

1 x 10-7 mbarl/s

g/a R143a (using 5% H2/
95% N2 asTracer Gas)

0.02 g/a

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 24

A 900Gas sensing specification (In Analysis Mode)

Selected unit

Sensitivity

Measurement
range

Linearity

Repeatability

ppm (H2)

0.5 ppm

0.5 - 2000 ppm(0.2%)

Typ. ± 15% of reading(within 0.1 - 10 x
calibration point inrange 0.5 - 100 ppm)

Typ. ± (10% of
reading + 0.3 ppm)

mbarl/s air(using 5% H2/
95% N2 asTracer Gas)

5 x 10-7 mbarl/s

5 x 10-7 - 4 x 10-2
mbarl/sTyp. ± 15% of reading(within 0.1 - 10 x
calibration point inrange 1 x 10-5 - 2 x
103
mbarl/s)Typ. ± (10% of
reading + 3 x 10-7
mbarl/s)g/a R143a (using
5% H2/95% N2
as Tracer Gas)

0.2 g/a0.2 - 8300 g/a

Typ. ± 15% of reading(within 0.1 - 10 x
calibration point inrange 0.2 - 420 g/a

Typ. ± (10% of
reading + 0.1 g/a)EN- 25

Sensistor ISH2000 Technical Reference Manual (TRM)

A 900A 900 Dimensions
Sensistor ISH2000
165 / 0.54

156 / 0.51

275 / 0.9

Figure A-7: Sensistor ISH2000 dimensions

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 26

Sensistor ISH2000C

275 / 0.9

188 /0.62

165 / 0.54

This page intentionally left blankFigure A-8: Sensistor ISH2000C dimensions

Sensistor ISH2000P

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Figure A-9: Sensistor ISH2000P dimensions

EN- 27

Sensistor ISH2000 Technical Reference Manual (TRM)

B

Installation
Sensistor ISH2000 Technical Reference Manual

Detailed content

B 100

SafetyB 110

Storage - transportation

B 210

Connecting the detector to the installation

B 300

Controlling the detector with the I/O interface

B 310

Controlling the detector with a PC computer through RS 232

B 310

Connecting the detector directly to a printer or another device

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 28

B 100
B 100 Safety instructions
The normal risks associated with working with all compressed gases must be
considered.

Indicates a potentially hazardous situation which, if not avoided, could result inproperty damage.

Indicates a potentially hazardous situation which, if not avoided, could result inmoderate or minor injury. It may also be used to alert against unsafe practices.

Indicates a potentially hazardous situation which, if not avoided, could result in deathor severe injury.

Indicates an imminently hazardous situation that, if not avoided, will result in death orsevere injury (extreme situations).

WARNING!
Pure hydrogen is a ﬂammable gas. Only use readymade Hydrogen Tracer Gas of 5% Hydrogen in
Nitrogen. This is a standard industrial gas mixture
used in various industrial applications.

Note: Whenever the word Hydrogen is used inthis manual it implies that the hydrogen gas issafely mixed with Nitrogen in the proportions
5% H2 - 95% N2.

WARNING!
Since the tracer gas mix contains no oxygen,releasing large amounts of gas in a conﬁned space
may lead to asphyxiation.

WARNING!
Compressed gases contain a great deal of stored
energy. Always carefully secure gas bottles before
connecting pressure regulator. Never transport gas
bottle with the pressure regulator ﬁtted.

Before connecting tracer gas: confirm that the connectors or test object is designed
for working at the test pressure.
WARNING!
Pressurising objects at too high pressures can resultin a burst object. This in turn can result in serious
injury or even death.
Never pressurise objects that have not previously
been burst tested or otherwise approved for the
chosen test pressure.

Leak detector label
Located at the back of the Sensistor ISH2000, a label indicates the electrical
specifications of the leak detector and its serial number.

EN- 29Sensistor ISH2000 Technical Reference Manual (TRM)

B 110B 110 Supplies and storage
Supplies
The following parts are supplied with your detector:

Sensistor ISH2000

Sensistor ISH2000C

Sensistor ISH2000P

Detector unit

Detector unit

Detector unit

Hand Probe P50.
Optional P50-Flex

Hand Probe P50. Optional
P50-Flex

Brackets

Probe cable C21

Probe cable C21

ScrewsPower cable (the power
cable is country specificand may differ)

Battery charger (the battery charger are country
specific and may differ).

O-rings seal

User manual

User manual

User manual

User manual CD

User manual CD

User manual CD

Product return form

Product return form

Product return form

Sample Kit Probe Tip Prot

Sample Kit Probe Tip Prot

Phoenix contact

Case

Storage
For prolonged storage, factors such as temperature, humidity, saline atmosphere, etc. may damage the detector elements.
Please call your local representative for further information.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 30B 210B 210 Connecting the detector to theinstallation
Ports and connections Sensistor ISH2000

Mounting plate screw hole
Probe control port
Printer port

Power input
Power switch
Fuse

Figure B-1: Sensistor ISH2000 back panel

Sensistor ISH2000 connections
Active Probe Control (APC) port.
See B 300.

Power input, 100-240 VAC

Printer connection, RS232 commands and APC driver installation.
Figure B-2: Sensistor ISH2000 connections

EN- 31

Sensistor ISH2000 Technical Reference Manual (TRM)

B 210Sensistor ISH2000C connections

Printer connection, RS232 commands and APC driver installation.
Battery charger
Figure B-3: Sensistor ISH200 C connections

Sensistor ISH2000P connections
Power input, 24V
Active Probe Control (APC) port.
See B 300.

 

    

Probe

Printer connection, RS232 commands and APC driver installation.
Figure B-4: Sensistor ISH2000P connections

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 32

B 300B 300 Controlling the detector with the I/Ointerface
I/O Interface
The Sensistor ISH2000 is equipped with a parallel Probe Control port. This
Probe control port can be used for controlling active probes, feeding status signals to a supervising computer system, and for simple test fixture control.
Note: Battery operated model Sensistor ISH2000C does not have a Probe Control Port.
Pin configuration for the different detector models is described under Model
Specific Specifications below.
See "Sensistor ISH2000 Technical Specifications" on page page 23 for electrical specifications.

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Sensistor ISH2000 Technical Reference Manual (TRM)B 300Probe Control Port Connector
The control port connector is a 25-pin female D-sub.

Pin

Type

Signal name

1

-

GND

2

-

GND

3

-

GND

4

In

In_0

5

In

In_1

6

In

In_2

7

In

In_3

8

In

In_4

9

Out

CAL_CONF

10

Out

OUT_6

11

-

GND

12

-

GND

13

-

GND

14

OUT

DET_ERROR

15

OUT

LEAK_OUT

16

OUT

DET_ON

17

OUT

DET_SIGNAL

18

OUT

DET_WAIT

19

OUT

OUT_0

20

OUT

OUT_1

21

OUT

OUT_2

22

OUT

OUT_3

23

OUT

OUT_4

24

OUT

OUT_5

25

OUT

24 VDC OUT

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B 300Status signal patterns
Status signals for pin 14 - 18.

Figure B-5: Example screen

Where:
I/0 name on the screen

Signal Name on the pins

Function

Inputs 0 to 4

In_0 to In_4

Input signal

Outputs 0 to 6

Out_0 to Out_6

Output signal

Status O

DET_ON

When detector is on

Status W

DET_WAITHigh during warm-up

Status S

DET_SIGNAL

Gas detected / Sensor notrecovered

Status R

LEAK_ALARM

Leak above Reject Level
detected

Status C

CAL_CONF

Calibration preformed
and okStatus E

DET_ERRORHigh if Probe, Sensor or
Cable is broken

DET_ERROR will go high for a short time (1-5 seconds) when the detector isswitched on. It will go low when the sensor has been checked. In normal operation, DET_ERROR = HIGH means that there is a problem with the sensor,
probe, or cable.
DET_WAIT is high when instrument is in warm-up mode after switching on
power. Instrument will also go into warm-up if there is a temporary fault in thesensor or sensor connection.
The timing of the status signals in relation to different events is described by thefollowing two examples:• Example: Input signals issued to control the APC system should have a pulse
length of at least 40 ms.
• Example: Output signals switch with a cycle time of 20 ms (0.02 s). This is thecycle time of the APC system.
Note: Not valid for battery operated version of Sensistor ISH2000.

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Sensistor ISH2000 Technical Reference Manual (TRM)B 300Status signal after power onPower off

Power onWarming up

Detection or analysis
mode. No gas detected.

DET_ERROR
DET_ON
DET_WAITDET_SIGNAL
LEAK_OUT

Figure B-6: Status signals after power on

Status signal when detecting a gas signal

Gas signal
Purge level
Reject level
Detector signal level
0 PPM
DET_SIGNAL
LEAK_OUTPURGE_LEVEL Trigger(APC)

Figure B-7: Status signals when detecting a gas signal

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B 310B 310 Controlling the detector with a PC
computer through the RS 232 interface
RS 232 interface
The RS 232 interface makes it possible to control the leak detector with a PC
compatible computer: it is installed on all leak detectors.

Commands available for your leak detector
RS232 interface commands

Setting

No printerPC printer

Data output

Data rate

115200 baud

1200 baud

9600 baud

Data bits

888Stop bits

1

1

1

Parity

None

None

None

Flow control

None

None

None

Common used functions

Command

HeaderCalibrate

K

MeasureM

Print Request

N

Stop Measurement

Q

Hand Probe

R

Active Probe (Installed AP)

S

Analysis ModeX

Detection ModeZ

Combined ModeY

K = Calibration request
Starts calibration if the Sensistor ISH2000 has an active probe driver installed.
Sensistor ISH2000 answers with a "K" if an active driver containing a calibration routine was found and "F" if the calibration APC sequence not found. Calibration doesn’t start if Purge level is reached.
M = Measure Request
The active test cycle defined by the APC driver starts. “M” is returned if theselected driver supports active test. “F” (failed) is returned otherwise.
N = Print Request
Returns current analysis value.

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Sensistor ISH2000 Technical Reference Manual (TRM)

B 310Q = Set APC in stand by, (stop a measurement)
Returns a “Q”.
R = Activates probe 0 (built in P50 driver)
Returns an “R”.
S = Activates probe 1 (Installed probe driver)
Returns an “S”.
X = Shift State to "Analysis Mode"
Returns nothing.
Z = Shift State to "Detection Mode"
Returns nothing.
Y = Shift State to “Combined Mode”
Return nothing.
Supported parameters
The following parameters can be downloaded to Sensistor ISH2000 in Analysis
and Detection mode.
Where: “Header” + “?” returns the a value from the instrument. This value ispresented as “A”, “B” and so on.
Parameter

HeaderData

Reject Level

An.nnE+nn

Correlation Value

B

n.nnE+nn

Analysis UnitC

Text string (max 12 characters)

Analysis Unit (Default list
unit**)

CUx

x=1 to 10, 1=PPM, 2=CC/
S up to 10

Timer AD

nnn*

Timer BE

nnn*

Timer CF

nnn*

Timer DG

nnn*

Purge Level

H

n.nnE+nn

Reference ValueI

n.nnE+nn

Reference UnitJ

Text string (max 12 characters)

Reference Unit (Program
settings)

JUx

x=1 to 10, 1=PPM, 2=CC/
S up to 10* entered as integer in 10’s of seconds, 1= 0.1s, 100 = 10s, 60000= 6000s
Default listed unit
PPM, cc/s, cc/min, SCCM, g/a, oz/yr, mbarl/s, mm3/s, mm3/min, Pa m3/s
Transfer of parameters
Send parameters one by one; send the specific header and then send the data(for example “1.00E+01”). String must be ended with a carriage return character, chr13 (dec).
Example: “CPPM” or “C PPM”, Carriage Return (chr 13). This sets Reject Level
Rate Unit to “PPM”.
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B 310Parameters can be sent in any order you like:• If your data was received and correct, Sensistor ISH2000 immediately echoes(sends back) the data.
• If you send a non existing header you will not receive anything.
• If the data could not be converted in the Sensistor ISH2000 you will receive
the string “CoEr”, (Conversion Error).
Note: Remember to use capitals for the header.

APC driver installation
APC drivers are installed in the detector from a PC. All active probes need adriver to be installed before they can be used.
Note: Battery operated model Sensistor ISH2000 does not incorporate the APCfeature.
For driver installation you will need the following:• APC Driver software. (Delivered with the probe.)• File transfer cable. (Delivered with the probe.)• PC computer with Windows XP with .NET Framework 2.0 or later.
Refer to chapter “F 800” on page 105.

EN- 39Sensistor ISH2000 Technical Reference Manual (TRM)

B 320B 320 Connecting the detector directly to a
printer or another device
For detailed information please refer to document RS 232 for leak detectors
users manual.

Printer port
The Sensistor ISH2000 is equipped with a serial printer port. This is the 9-pin Dtype connector. It is used for printer connection, RS232 commands and APC
driver installation.
Note: Always switch power off before disconnecting or connecting any cable.

Preparing the RS 232 link cable
Use INFICON cable, P/N: 103616, or make your own by following the pin connections specified below:
Use a Sub D9 pin, female connector (7 and 8 connections are necessary only if
RTS and CTS are used in an user software).

Connector pin configuration

Pin

Signal1

Comment
Not used

2

RX

Received data

3

TX

Transmitted data

4

(DTR)

Not used

5

SG

Signal ground

6

(DSR)

Not used7(RTS)

Not used8(CTS)

Not used9(RI)

Not used

CD 1
RxD 2
TxD 3
DTR 4
SG 5
DSR 6
RTS 7
CTS 8
RI 9

1 CD
2 RxD
3 TxD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
9 RI

D9 Female

D9 Female

Only pin 2 (Received data), pin 3 (Transmitted data) and pin 5 (Signal ground)are used.

Figure B-8: D9 Null modem cable wiring diagram

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 40B 320Connecting the detector to a computer
For example, the user can communicate easily with the detector using the Terminal or Hyper Terminal program in Windows®.

Selectable printer types
Most PC-printers with serial interface can be connected to the 9-pin printerport. Parallel (Centronics) interface printer can be used if connected through a
serial to parallel converter. The port can be set up for the following printertypes: PC Printer and Data Dump.
No printerPrinter output disabled. Incoming communication is enabled. Sensistor ISH2000
listens for incoming data but will not print/send test results.
PC printer (with serial interface)
The PC Printer option can be used to print data on most standard PC printerwith serial interface. Parallel interface printers can be used if connected througha serial to parallel converter.
Note: The output format has been chosen to be as simple as possible to ensurethat most printers will accept it. Therefore, the printer output does not use any
flow control. This means that some printers may delay printing until the input
buffer is full or a pre-defined timeout has elapsed.
Figure B-9:
Setting

Value

Data rate

1200 baud

Data bits

8

Stop bits

1

ParityNone

Flow control

None

Note: Due to the large variety of printers available on the market, INFICON
AB does not take responsibility for the operation of a particular type of printer.
Printed data
The detector can print the following information:
1 Date and Time for Power on of detector.
2 Time of print.
3 Value of all gas signals above the Reject Level.
4 Test result: “Accept” or “Reject”.
5 Value of signal obtained during active test.
6 Result of calibration: “OK” or “Calibration Not saved”, Date and Time,Parameter settings.
Printing of the current value can also be requested by an RS232 command orordered manually by pressing PRINT.

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Sensistor ISH2000 Technical Reference Manual (TRM)

B 320Probe type determines information printed.
Probe type

Data printed

Hand Probe P50

1, 2, 3, 4, 6

Counter Flow Hand Probe
AP57

1, 2, 3, 4, 6

Sniffer Hand Probe AP55

1, 2, 4, 5, 6

Sampling Units AP29 andH28

1, 2, 4, 5, 6

APC driver with active test
(using MEAS flag)

1, 2, 4, 5, 6

APC driver not using
MEAS flag

1, 2, 3, 4, 6

Analysis data output
The Analysis Data Output option is intended for transferring test results to asupervising computer system such as, for example, a PLC system.
Communication specifications.

Setting

Value

Data rate

9600 baud

Data bits

8

Stop bits

1

ParityNone

Flow control

None

The data format for Analysis data output consists of nine ASCII characters.
Seven characters show the value in engineering format one character shows
the result of the test, and one character shows line feed (LF).
The character indicating the result of the test is one of the following.

Character

Result of the test

A

Accept. Previous test was below Reject Level alarm limit.

R

Reject. Previous test was above Reject Level alarm limit.

P

Rejected by Purging. Previous test was above purge limit(and Reject level limit).

C

Calibration approved. Previous cycle was calibration.
Calibration was approved.

F

Calibration failed. Previous cycle was calibration.

E

Test interrupted by “Error” that occurred during cycle(probe or sensor error etc.).

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B 320
Example: 2.5E-04R (LF)
This example is a line feed (LF), R means that the test was above the Reject Level
alarm limit, and the value was 2.5E-04.
For passive probes (for example P50 and AP57*) data is printed when a signal isdetected above Reject Level or when the print button is pressed. Activate thisunder Measure Button menu.
For active probes (e.g AP29) data is printed at end of measurement sequence.
Printing of the current value can also be requested by an RS232 command orordered manually by pressing PRINT.
* A custom APC program setting the MEAS flag prints as AP55/AP29 and an
APC program not using MEAS flag prints as P50.
Detection data output
The Detection Data Output option is intended for automated scanning of weld
seams etc.
Note: The Detection Data is expressed in arbitrary units. Detection Mode signal
is not affected by calibration!
Communication specifications.
Setting

Value

Data rate

9600 baud

Data bits

8

Stop bits

1

ParityNone

Flow control

None

The data format for Detection data output contains of ten ASCII characters.
Nine characters show the value in engineering format, and one character shows
linefeed (LF).
The print time is 50Hz continuous streaming data.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C

Operation
Sensistor ISH2000 Technical Reference Manual

Detailed content

C 100

Getting started with the leak detector

C 110

Operating principle of the control panel

C 200

Control panel

C 201

Menu system

C 210

Password

C 211

Operation of the leak detector

C 300

Calibration of the leak detector

C 304

Correlation ValueC 305

Calibrated leak values programming

C 410

Headphone and loudspeaker

C 500

Factory configuration of the leak detector parameters

C 570

Date - Time - Language - Unit

C 580

Service mode och debug mode

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C 100C 100 Getting started with the leak detector
Starting up / switching off
the leak detector
1. Connect power.
2. Connect the probe.
3. Start the unit and wait approximately 1 minute.
4. Select probe in the menu.
Refer to C 211 “C 211 Operation of the leak detector” on page 55.

To familiarize oneself
with the control panel
Refer to “C 200 Control panel” on page 46 for the control panel description.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 200C 200 Control panel
Description

Control push-buttons

Earphone socket
Probe connector
LEDs
Figure C-1: Sensistor ISH2000 control panel

Graphic interface
The display shows:• indicator bar in Detection Mode and the figures in Analysis Mode.
• seven main menus. Their positions are indicated on a horizontal scale. Change
from one menu to another using the < and > buttons.
• main menus have submenus, which are also indicated by horizontal scales
and can be selected using the < and > buttons.
• scales for setting numeric values, languages, etc.
• messages.
Sensistor ISH2000C:• A battery status indicator in the upper right corner, where 13.5 V indicatesdischarged state and 16.0 V indicates that the battery is fully charged.
• six main menus. Their positions are indicated on a horizontal scale. Change
from one menu to another using the < and > buttons.

LEDs
The two LEDs indicate the status of the instrument as follows:• Green flashing slowly, during warming up phase.
• Green fixed light indicates that instrument is ready and hydrogen signal is
below Reject Level limit.
• Red fixed light together with Reject on display means the instrument has
detected a leak larger than the set alarm limit. Red flashing rapidly, check message on screen. (See “Trouble-shooting” on page 74.
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C 200Push-buttons
The functions of the push-buttons are shown at the lower edge of the display.
In this manual the buttons are numbered, from left to right, 1, 2, 3, and 4. The
push-buttons are used to:• Change from one menu item to another using the < and > buttons.
• Press Enter to move down to the nearest submenu.
• Press Save to save the set value.
• Press Undo to restore the previously set value.
Press Esc to move up to the nearest higher level(s).

Demo Mode
Demo Mode is a demonstration mode, special designed for seller. All APC drivers for standard probes and filler will be selectable. The seller can easily swap
between the different drivers and won't need to download them.
To set the Detector in Demo Mode:• Select: Menu/General Settings/Change Password• Enter "DEMO"• Confirm New Password "DEMO"
Select driver under menu: APC Settings/Probe TypeThe word "DEMO" will be shown at start up.
To turn Demo Mode off repeat the list above.

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C 201
C 201 Menu system
The menu system is designed as a tree structure similar to that used in mobile
telephones. The display shows all the levels when browsing down through themenus so that you can always see exactly where you are.

1

2

3

4

Figure C-2: Push-buttons

To enter the menus, press Menu (button 4). Press < and > (button 2 and button
3) to choose between main menus.
If no setting is made in a menu or its submenus within 60 seconds, the instrument will revert to the Detection Mode/Analysis Mode.
The buttons may change functions in different menues. Always read the text,
just above the buttons in the display, for the button functions.
All changes in values are valid only when saved using the Save button (button
4).
Use the Undo button (button 1) to delete a change in value and revert to theprevious setting.
Use the Esc button (button 1) to browse backwards through the menus to thestart position Detection Mode/Analysis Mode/Combined Mode.
To change quickly from Detection Mode to Analysis Mode or vice versa, press
button 3 three times in succession.

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C 201
Sensistor ISH2000 v. 6.0 Menu System

Measure Screen

Change Test
Mode

Calibration

Detection Mode
Settings

Analysis Settings

APC Settings

Display Settings

General Settings

Service Settings

Analysis Mode

Calibrate

Senistivity

Reject Level

Probe Type

Contrast

LanguageShow Password

Detection Mode

Reference Value

Auto Range

Correlation
Value

APC Time A

Brightness

Measure/Print
ButtonSystem Reset

Combined Mode

Reference Unit

Direct Sensitivity
Adjustment

Analysis Unit

APC Time B

Invert Colors

Probe Button

Detector Signal
Level

Calibration Time

Auto Threshold

Multipoint
Analysis

APC Time C

Screen Save
Timeout

Probe Lamp

Trigg Level

Password
Protected
Calibration

Reject indication

Multipoint
Analysis Time

APC Time D

ChangePassword

Min Calibration
Time

Audio Ready
Pulse

Min
Presentation
Time

Purge Level

Audio Base
Frequency

Battery Mode

Display
Threshold

Reset Signal

Set ClockNumber of
Significant Digits

Audio Threshold

Set Date

Debug mode

RejectIndications

Printer Port

Service ModeShow Reject
Level

Info

Audio Ready
Pulse

Figure C-3: Menu system

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C 201
Change test mode
Choose the measuring method you will use in the menu Change Test Mode.
There are three different methods to choose:• Analysis Mode
• Detection Mode
• Combined Mode

Figure C-4: Change test mode screen example

Calibration
The instrument must be calibrated by using the integral calibration function toensure it displays the correct values in Analysis Mode/Combined Mode. Aftercalibration the instrument will show the correct measured values on the display.
The calibration parameters will be stored into the probe.

Figure C-5: Calibration screen example

Detection mode settings
In Detection Mode, the signal is displayed in the form of a bar. The length of
the bar varies with the gas concentration.

Figure C-6: Detection mode screen example

Analysis mode settings
In Analysis Mode the measured value is displayed in figures. The default unit isin PPM but it is possible to choose other units, See .“C 500 Factory configuration of the leak detector parameters” on page 65

Figure C-7: Analysis mode screen example
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EN- 50C 201
APC settings
APC is an abbreviation for Active Probe Control. The APC function is for thecontrol of an active probe that has a built-in alarm, valves or pumps via ProbeControl Port.
Different probes require controls therefore, it is possible to download different
drive routines for the instrument from a PC.
There is a possibility to adapt how to measure by adjusting the timers and Purge
Level.
Probe Type
Select the connected probe. Choose between “Hand Probe” and anotherprobe driver installed from the disc delivered with active probe (if ordered).
APC Time A-D
Adjustable timer used by the APC system. Select a APC timer and press “Enter”
to display specific use of this timer. APC timer can be used for general purposesin a custom APC program.
Purge Level
Signal level controlling the Purge_Level APC Triggers. Standard probes that support active sampling use the Purge Level for fast interruption of sampling that
result in high gas signals.
Setting Purge Level equal to, or just above, Reject Level will give the fastest possible cycle times for those probes.
Quick purging also enhances signal repeatability.
Note: Purge level interrupts active sampling of APC probes. This means thathigher signals will be underestimated as the sensor is purged before full signal
has developed.
Reset Signal
Reset the sensor level in Analysis mode and Detection mode.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 201
Display settings
This section describes the different display settings of the Sensistor ISH2000.
Contrast
Contrast level of display. Higher value gives higher contrast. The contrast may
need adjustment if ambient temperature changes.
Brightness
Brightness of the display lamp. A lower brightness value saves energy and prolonges the lamp.
Invert Colors
Change the black to white and white to black. Useful in a dark environment tokeep a high readability.
Screen Save Timeout
Display lamp will dim to half brightness if instrument is left idle for the numberof minutes set by this parameter. The screen save timeout can be set between 1
and 60 minutes, the function is deactivated if set to OFF. The display lamp will
return to the set brightness if any of the display buttons are pressed, if a gas
signal is detected or an instrument error is detected.

General settings
This part describes the general settings of the Sensistor ISH2000.
Language
The Sensistor ISH2000 user interface contains the following languages:• English• French• German• Italian• Spanish• SwedishMeasure/Print Button
Setting this parameter to ON displays Measure or Print above the button 1.
Measure will be displayed for an APC-Probe or Print for a Hand Probe. Pressing
Measure will initiate a sample cycle. Pressing Print will send the values from thehand probe measurement to the printer port.
Probe Button
This is for setting the different functions with the probe button. These functions
are as follows:• Toggle Mode-makes it possible to switch between Analysis mode and Detection mode.
• Zero detection signal-in Analysis mode and Detection mode.
• Measure/Print-makes it possible to initiate sample cycles or send the values
from the hand probe measurement to the printer port.
• Probe Lamp-makes it possible to turn on and off the Probe Lamp.
Probe Lamp
Makes it possible to have the Probe Lamp on even if the other Probe Button
function is chosen.
Change Password
The user password is a text string (max 12 alphanumerical characters) used tolock critical parameters. Setting password to an empty string (no characters)
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C 201means that no password is needed to modify the critical parameters. The
default is no password (“”).
Contact INFICON AB if you have lost your user password. If the Password Protected Calibration parameter is set to ON you will be prompted for a password
when starting a calibration.
Note: Setting Password Protected Calibration to ON has no effect if no password is set.
Note: APC controlled calibration can be started from the bus in both cases.
Audio Base Frequency
This sets the lowest audio base frequency tone in Search and Detection Mode.
Set ClockReal time set as hh:mm:ss. Hours and minutes can be adjusted. Seconds willautomatically be set to 00 when hours and minutes have been set. Clock runs
even when detector is disconnected from the power supply.
Set Date
Real Time Clock date set as YY-MM-DD. Clock runs even when detector is disconnected from the power supply.
Printer Port
The Sensistor ISH2000 is equipped with a serial (RS232) printer port. See“Printer port” on page 35.
Info
Contains information about software versions, Serial number, and Internet contact information.

Service settings
The Service Mode is reached by starting the instrument and at the same time
hold the right button down on the panel. After start a new main menu called
Service Settings will appear.
See “E 140 Service menu” on page 84

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C 210C 210 Password
Change Password
The user password is a text string (max 12 alphanumerical characters) used tolock critical parameters. Setting password to an empty string (no characters)means that no password is needed to modify the critical parameters. The
default is no password (“”).
Contact INFICON AB if you have lost your user password. If the Password Protected Calibration parameter is set to ON you will be prompted for a password
when starting a calibration.
Note: Setting Password Protected Calibration to ON has no effect if no password is set.
Note: APC controlled calibration can be started from the bus in both cases.

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C 211
C 211 Operation of the leak detector
To detect leaks

Do not expose the probe to a hydrogen concentration higher than 0.1% when the instrument is not put into operation, this might damage
or destroy the probe sensor.
When the instrument is put into operation the sensor withstands temporary exposure to hydrogen concentration up to 100%. Avoid longexposures to high concentrations.
If all you wish to do is to detect the presence of a leak, that is, find out whether
there is a leak or not, then use the Detection Mode (or use the detection bar in
Combined Mode).
The definition of Leak/No Leak will then simply be "A leak is a leak when it canbe detected by the detector, set to a specific sensitivity".
To set up:
The operation in Detection Mode is not quantitative. The audio and visual signal will increase and decrease with the gas concentration. Therefore, there is no
actual calibration to be done, but rather a setting of the sensitivity to a desired
level.
A typical set-up procedure for Detection Mode is:• Set up a reference leak which corresponds to the smallest leak you wish todetect.
• Put the probe close to the reference leak and note approximately what reaction you get (no reaction, small, medium, high, full scale) within the first few
seconds.
• Set the sensitivity. This can be done permanently under the menu Detection
Mode Settings or temporarily as a Direct Sensitivity Adjustment on the display(unless you have set this function to OFF under the Detection Mode Settingsmenu).
There is also an Auto ranging function which can be selected under the Detection Mode Settings menu.
Note: If the Detection Mode is used and the alarm function is required to be
activated at a particular calibrated level, then the unit must be calibrated inaccordance with the instructions. The reason for this is that the alarm is basedon the Analysis Mode when the Detection Mode is displayed.

To locate leaks
Note: The Detection Mode (or use the detection bar in Combined Mode) isused to locate leaks. This mode is semi-quantitative, that is, it gives an audio
and visual signal which increases as a leak is approached (a higher gas concentration) and decreases as you move the probe away from the leak. It does not
display figures. In this mode of operation leaks can easily be detected using asensitivity which can be preset.
Leaks can be located very accurately, even when there are other leaks nearby. If,
for example, you are trying to locate a leak on a product and the product has amajor leak, then you will get an audio signal as soon as the probe is placed
close to the product.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 211
When the probe is moved around and over the product, the signal will increaseas the probe approaches the leak. If the signal goes out of scale, simply reduce
the sensitivity setting to bring the signal within the scale. Working with the sensitivity setting this way you will be able to locate multiple leaks that are in close
proximity to each other.
Note: Working inside a confined space such as, for example, a cabinet or a narrow passage on a combustion engine there is a risk that the background concentration accumulates to levels close to the upper detection limit of thedetector. In such case it will not be possible to locate leaks as easily as in open
spaces.
Hint: Do not expose the probe to more gas than is necessary, because it willslowly saturate with time. It is good practice to detect a leak, locate it, andimmediately remove the probe to avoid saturation. The probe is not damagedby the exposure but it will recover more slowly. After excessive exposure it willbe less sensitive for a short period of time.

To quantify leaks
The Analysis Mode (or use the analysis figures in Combined Mode) is used
for measuring the size of a leak (or the concentration of a gas sample). To beable to do this measurement and obtain correct values, the instrument mustfirst be calibrated using the calibration function.
In the Analysis Mode the detector determines the gas concentration from thechange, as the probe goes from being exposed to background to being
exposed to a certain gas concentration. The detector does not continuously
monitor the gas concentration but takes just one reading instead. Another suitable alternative name for this mode could be Sampling Mode. It is important tokeep this in mind when using the detector in this mode.
In Analysis Mode the probe should be moved directly from a background situation to the test point. The size of the leak in PPM, or any other selected units,
is shown on the display. The probe can and should be removed from the measuring point as the measured value steadies and remains on the display. The
period during which the measured value is displayed can be adjusted in the
Analysis Mode Settings menu.
The leak detector operates in the range 0.5 - 2000 ppm H2 giving linearity
between 0.5 and 500 ppm. To obtain greatest accuracy over this range, follow
the calibration recommendation. See "Calibration of the leak detector" on
page page 57.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 56

C 300C 300 Calibration of the leak detector
Introduction
The leak detector is the instrument and the probe together. This section consistsof step by step examples about how to calibrate the detector in the most comman cases.
The instrument must be calibrated by using the integrated calibration function
to make sure it displays the correct values in Analysis Mode. After calibration
the instrument will show the correct measured values on the display in Analysis Mode and Combined Mode. The calibration parameters will be stored into
the probe.

Calibration reference
There is a possibility to calibrate the detector by Reference Gas or Reference
Leak.
A Reference Gas contains a well-defined concentration of Hydrogen gas in ppm
mixed by air or some inert gas. A Certificate will normal follow the gas bottles.
Reference Gas can be ordered from local gas suppliers.
A Reference Leak is a well -defined gas leak, and should be feed by same gas asusing in the detection test and with a gas pressure that is defined in the Reference Leak certificate. Reference Leak can be ordered from the detector provider.
Choose a calibration reference size, as follows recommendations:• Same or higher than the Reject Level (but maximum 10 times higher)• In one of the following ranges:- 5 to 1000 ppm H2- 1x10-5 to 1x10-2 cc/s (mbarl/s) defined for air- 3 to 300 g/a defined for R134a
Please contact the provider of the detector for help to select optimal calibrationreference for your application.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 300Calibration procedure
Before calibration, the Reference Value in the Calibration Menu must be set.
See “With reference gas” and “With reference leak” below.
When calibrating, expose the probe to the background air then do the following steps:
1. First Menu then Calibration/Calibrate/Enter.
2. Push the Start button or push the probe button.
3. Expose the probe for the reference gas/leakThe probe does not have to be exposed to the to the calibration gas during thewhole Calibration Time ( the time set in the Calibration Menu while the bar
is moving). The instrument only measures the change as the probe goes fromthe background air to calibration gas.
While the calibration time bar is moving, the probe should be exposed to thecalibration gas or referenece leak. Then the display shows Detecting Gas andgives sound signals. Save or repeat the calibration routine until you can save thecalibration. If the calibration is not saved, the instrument will revert to the previous value after one minute.
Note: You will need to repeat the calibation 2-3 times to get Calibration OK
after changing setup or probe.
• Allow at least 30 seconds between each calibration for best accuracy!
• If the message “No Gas or Unstable Signal” is displayed repeatedly - go backto Detetion Mode and check functionality.
• If Repeat Calibration is displayed then this means that the measured value
devated more than 10% from the previous calibration. Repeat the calibration
procedure.
Also set the Analysis Unit to the same as the Reference Value. If you want touse another unit you have to put a recalculation number into Correlation Value
which describes the relationship between the different units.

Calibration intervals
Calibration is a natural part of leak measurement and an important factor in
quality assurance. It is impossible to specify an exact requirement for the interval between the calibrations becase the applications for which the instrument isused can vary considerably.
There will be some oxidation of the probe sensor, which reduces the sensitivity,
if the probe sensor:• is not subjected to gas for a lengthly period or• is exposed to a very small gas concentration (less than 10 PPM) with longintervals between exposure.
If the instrument is subjected to a very large gas concentration over a long
period, a certain amount of insensitivity can occur directly afterwards. This saturation can make it difficult to detectvery small leaks. Therefore, make it a habitof removingthe probe from the measurig point as soon as the measured value isdisplayed. This gives the detector an opportunity to recover.

Low sensitivity warning
The Detector will warn if sensitivity of sensor is too low to safely detect a leakequal to the set Reject Level limit. The warning can be ignored and calibration
updated but the CAL_CONF output will not be set.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 58

C 300
Irregular reference warning
The Detector will warn if the calibration signal is unreasonably high. This canoccur, for example, if 5% tracer gas mix has been used instead of proper reference gas or if the reference leak has an extra non-intentional leak. The warning
can be ignored and the calibration updated but the CAL_CONF output will not
be set.

Sensor condition indicator
The indicator bar extends in length when the sensor is detecting reference gas.
This indicator can be used for an early warning as to when a sensor replacement will be needed.

The length of the bar shows the condition of the sensor. The bar will become
shorter if the sensor has lost some in sensitivity. The scaling of the indicator is
not precise enough to say at exactly what length the sensor must be replaced.
You will learn when this happens for your particular application. The instrument
will also tell you in clear text when sensitivity is too low.

Calibration messages

Message

Explanation

RemedyExpose to background...

Prepare the probe forcalibration by holding it
in hydrogen freebackground.

-

Detecting gas

Gas signal is detected.

Normal operation, gas
exposure can beinterrupted.

Repeat calibration

Calibration was notwithin 20% of last.

Wait 30 s and calibrate
again.

Calibration OK

Calibration was within
acceptable limit.

Press Save (button 4) tostore calibration inmemory.

No gas or unstable signal.

No gas signal or no stablesignal detected duringcalibration.

Check reference. Gas
valve may be shut.
Check that probe tip is
not clogged.

Signal when reference gas
is shut off. Happens forreference gas only.

Background is higher
than reference gas
concentration. Improveventilation.

Sensitivity of sensor is too
low to guarantee correct
response to a gas flow orconcentration equal to
the Reject level. The most
likely reason is that sensor is too old.

Check reference. Gas
valve may be shut.
Check that probe tip is
not clogged.
Check setting of RejectLevel.
Replace sensor if problem
remains.

Sensitivity too low for
Reject levelEN- 59Sensistor ISH2000 Technical Reference Manual (TRM)

C 300
Message

Explanation

RemedyHigh signal! Checkreference!

Reference signal is abnormally high.

Check that reference gas
mix is not replaced withtracer gas mix.
Check condition of reference.
Check that reference leakconnections has no leaks.

Note: If calibration fails you can still use the instrument. Last valid calibration
parameters will be used. You should, however, check that the instrument reacts
to the reference.

Reference ValueYour reference should have a concentration or flow equal to or slightly above
what you want to measure. See the examples below for specific recommendations.
Example for reference gas:
• Reject Level is set at 8 PPM• For good accuracy, use a reference gas between 8-80 ppm hydrogen.
• 8 PPM hydrogen in synthetic air will give best results.
Example for reference leak
• Reject Level level is set at 2.0E-4 atm. cc/s
• For best accuracy reference leak within 2.0E-4 - 2.0E-3 atm cc/s.
• A reference leak calibrated to 2.0E-4 atm. cc/s will give best accuracy.

Reference Unit
The Reference Unit is set in the Calibration menu. Select PPM, cc/s, cc/min,
SCCM, g/a, oz/yr, mbarl/s, mm3/min, Pa m3/s or Custom. When you select Custom you can enter any unit as long as it contains a maximun of 12 characters.
Calibration can be performed with:• a known hydrogen concentration• a known flow leak
The following characters can be used: Upper and lower case Roman letters, thenumbers ü, Å, Ä,Ö, å,ä,ö,%,/,(,),and - (dash).
Note: The space (““) is not supported. The leak rate unit string will be cut shortat the first space found.

Calibration Time
The calibration time decides how long time the detector looks for a reference
signal before giving up. If the calibration is set to, for example, 6 seconds thedetector will record the maximum signal during 6 seconds after that the operator (or external hardware) orders a calibration.
It is very important that all delays in gas exposure as well as reaction time ofsensor are taken into consideration when setting the calibration time. Calibration will not be correct if the maximum signal comes after that the calibration
time has terminated.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 60C 300
Minimum calibration time
This parameter sets the lowest possible Calibration Time that can be set under
the Calibration menu. Default is 5 seconds.
Minimum calibration time should be set to safeguard so that the following two
requirements are fulfilled:
1 The hydrogen from the reference leak or gas line must reach the sensor
before end of calibration time.
2 The sensor must have time to reach its maximum signal before end of calibration time.
Setting Min Calibration Time too low will have the following effects:• Calibration will fail if calibration time is set too low.
• Calibration might pass but be incorrect.
Setting a high Min Calibration Time will have the following effects:• Calibration takes longer time than necessary.
• Calibration gas consumption is higher than necessary.
Note: Correct calibration is an essential parameter in quality testing. We, therefore, recommend that careful consideration is paid to setting an appropriate
Min Calibration Time. This will inhibit personnel, lacking detailed knowledge
about calibration, from jeopardising quality by setting a too short Calibration
Time.

Password protected calibration
If desired, the calibration can be set under the general password to prevent theoperator from calibrating by mistake. In this case you will have to enter the
password to start the calibration routine. Setting password protection on calibration is done in the General Settings menu. Note that you must also set a
password. The instrument is delivered with no password set.

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 304C 304 Correlation value
If you want to use another unit you have to put a recalculation number into
Correlation Value which describes the relationship between the different
units.
This might be necessary when you want to display Reject Level unit other than
the reference leak rate unit.
Useful also for correct the value when volume and time affect the measurevalue result in accumulation test.
Example:To use mbarl/s as an calibrate reference unit and mm3/s as a analysis Unit you
have to set a Correlation Valus to 1.00E-03.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 62

C 305
C 305 Reference values settings
Reference value with reference leak
When measuring leak flow you will, in normal cases, calibrate the detector witha reference leak.
Set the Reference Value equal to the calibrated flow of your reference leak.
This value can be found on the calibration certificate issued for the leak. Also
set the Reference Unit to the same unit as that used to express the leak rate of
the reference leak.
Example: Reference leak rate is 4.2E-5 mbarl/s.
1- Set Reference Value = 4.2E-05.
2- Set Reference Unit = “mbarl/s

Reference value with reference gas
When measuring hydrogen concentration (instead of leak flow) in most cases
you will calibrate the detector to a reference gas with a known concentration.
Set the Reference Value equal to the Hydrogen concentation in your referencegas. This can be found on the certificate of analyis issued for the gas. Also set
the Reference Unit to the same unit as that used to express the leak rate of
the reference leak.
Example: Reference gas contains 10 PPM Hydrogen in synthetic air.
1- Set the Reference Value = 10
2- Set the Reference Unit = “PPM”

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Sensistor ISH2000 Technical Reference Manual (TRM)

C 410C 410 Headphones
The operator can connect a headphone to the detector.

Accessories
Headphone
INFICON does not sell headphones. The specifications are: Jack plug mono 3.5mm.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 64

C 500C 500 Factory configuration of the leakdetector parameters
Default parameters
Range and default settings of all Sensistor ISH2000 parameters.
ConfigurationEN- 65

Parameter

Range

Factory default

Analysis Unit

Several Choices

PPM

APC Time A

0.0 - 6000.0 s

10.0

APC Time B

0.0 - 6000.0 s

0APC Time C

0.0 - 6000.0 s

0APC Time D

0.0 - 6000.0 s

0Audio Base Frequency

Several Choices

400 HzAuto Range

ON/OFF

ON

Audio Ready Pulse

ON/OFF

ON

Audio Threshold(Detection)

0 - 100 %0%

Audio Threshold(Analysis)

0 - 100 %4%Brightness

0 - 2121

Calibration TimeMin Calibra. Time-30 s

10 s

Clock

hh:mm:ss-

Contrast

0-20

10Correlation Values

1.00E-37 - 1.00E+37

1.00E+00 = 1

Date

YY-MM-DD-

Debug Mode

ON/OFF

OFF

Detector Signal Level

0-100 %

20 %Direct sensitivity
adjustment

ON/OFFON

Display Threshold

0-100 %

4%

Invert Colors

ON/OFFOFF

Language

Several choices

EnglishMeasure/Print Button

ON/OFFOFFMin Calibration Time

0 - 30 s

5s

Min Presentation Time

120 s

1s

Multipoint Analysis

Several Choices

OFF

Multipoint Analysis Time

0.0 - 30.0 s

5.0 s

Customer modification

Sensistor ISH2000 Technical Reference Manual (TRM)

C 500Configuration
Parameter

Range

Factory default

Number of significant
Digits2/3

2

PasswordMax 12 characters“” = No password

Password protected
calibration

ON/OFF

OFF

Printer Port

Several choices

No printerProbe Button

Several choices

No Function

Probe Lamp

ON/OFF

OFF

Probe Type

Several choices

No probe

Reject Indicator

ON/OFF

ON

Purge Level

1.00E37 - 1.00E+37

1.00E+02 = 100

Reference Unit

Several choices

PPM

Reference Value

1.00E- 37 - 1.00E+37

10

Reject Indication

ON/OFFOFF OFF

Reject Level

1.00E-37 - 1.00E37

1.00E+01 = 10

Screen Save Timeout

1 - 60 min

20 minSensitivity

1 - 15

8Show Reject Level

ON/OFFON

Trigg Level
Menu Mode

Customer modification

42
Several choices

Sensistor ISH2000 Technical Reference Manual (TRM)

Combined ModeEN- 66

C 570C 570 Date - Time - Language - Unit
Set Date
Real Time Clock date set as YY-MM-DD. Clock runs even when detector is disconnected from the power supply.

Set ClockReal time set as hh:mm:ss. Hours and minutes can be adjusted. Seconds willautomatically be set to 00 when hours and minutes have been set. Clock runs
even when detector is disconnected from the power supply.

Set Language
The Sensistor ISH2000 user interface contains the following languages:• English• French• German• Italian• Spanish• SwedishEN- 67

Sensistor ISH2000 Technical Reference Manual (TRM)

C 580C 580 Service mode och debug mode
Service settings
The detector is equipped with a service setting to help in trouble shooting anddiagnostics.
IMPORTANT! The normal operator should not enter this mode.
The service mode menu option is therefore normally not shown in the menu
system and most of the functions in the service mode are protected by a special
password.
IMPORTANT! We strongly recommend that the service mode log in procedure
is kept secret from all personnel not fully trained in the details of all functions of
the detector.

Logging in to Service settings
Service Mode Log In Procedure
1. Switch power OFF.
2. Press and hold the right display button.
3. Switch power ON.
4. Release right button when text appears. During warm up the display willshow software revision numbers and date and time of the real time clock.

Service mode
When in service mode the display will show a service info screen as shown
below.
To get to Service Mode: Choose Menu / Service Settings / Service Mode
The Service Menu has two screens. Toggle between them by using APC andBack.
• First screen (Service Mode) show electrical parameters and sensor signals.

Figure C-8: Sevice mode screeen example• Second screen (APC I/O) show APC program status, APC I/O:s input, outputs
and some internal flags.

Figure C-9: APC I/O screen example

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EN- 68

C 580In Service Mode, the following information accessible:
ADC

Raw Sensor Signal (mV)

DetectNumeric value of the Detection Mode signal

AnalysAnalysis Value

Battery

Battery voltage if portable model, (V)SignalSensor signal when the probe expose

Diode

Temperature voltage from probe (mV)In APC I/O, the following information accessible:
Row

Executing APC program row

Time

Executing time for the row

ADC mV

Raw Sensor Signal (mV)

Det

Numeric value of the Detection Mode signal

Ana

Analysis Value

Inputs0

Status of external input 0(IN_0)

1

Status of external input 1(IN_1)

2

Status of external input 2(IN_2)

3

Status of external input 3(IN_3)

4

Status of external input 4(IN_4)

Outputs

EN- 690

Status of external output
0 (OUT_0)

1

Status of external output
1 (OUT_1)

2

Status of external output
2 (OUT_2)

3

Status of external output
3 (OUT_3)

Sensistor ISH2000 Technical Reference Manual (TRM)

C 580
Outputs
4

Status of external output
4 (OUT_4)

5

Status of external output
5 (OUT_5)

6

Status of external output
6 (OUT_6)

Status (also output)O

Detector on (ON)W

Wait during the detector
starts up period (WAIT)S

Sensor signal detected(SIGNAL)

R

Reject (REJECT)C

Calibration confirmed(CAL_CONF)

E

Error (ERROR)

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 70C 580Debug Mode
Do not enter this mode. Debug mode is for the manufacturer's use only. Entering debug mode will set the detector to continuously dump debugging data on
the printer port.
IMPORTANT! Setting the detector in debug mode will inhibit normal useof the printer port.
If you have accidentally entered the debug mode, you can exit by choosing the"Debug Mode" menu option again.
Debug Mode get to Debug Mode: Choose Menu / Service Settings / Debug
Mode/Enter the code: SEN
Print Port output:• Time (ms) counted from power up• Raw Sensor Signal (mV)
• Numeric value of the Detection Mode signal• Analysis Value
All values are presented with three digits and tabs between. Printer rate: 50 Hz(20 ms).

EN- 71

Sensistor ISH2000 Technical Reference Manual (TRM)

D

Maintenance - troubleshooting
Sensistor ISH2000 Technical Reference Manual

Detailed content

D 100

Preventive maintenance

D 200

General troubleshooting guide

D 300

Reference Leak Trouble Guide

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EN- 72

D 100
D 100 Preventive maintenanceAs the Sensistor ISH2000 does not contain any mechanical parts there is noneed for preventive maintenance. However it is recommended to keep somespare parts ready.

EN- 73

Item

Part number

Hand Probe sensor

590-292

O-ring seal

591-528Fuse

591-578

C21 cable (3m)

590-161

Power cable (EU)591-146

Power cable (UK)591-147

Power cable (US)591-853

Probe Tip Protection Cap

See “Which options forwhich model?” onpage 11.

Probe Tip Filter

See “Which options forwhich model?” onpage 11.

Battery (clock battery)591-780

Sensistor ISH2000 Technical Reference Manual (TRM)D 200
D 200 General troubleshooting guide
Symptoms description

Fault symptoms

Fault

Measures

Error messages: “Check
Probe and Cable”. Red
LED flashes quickly.

Broken connection
between probe andinstrument

Check that the probe
cable is properly connected to the probe andthe instrument. If the fault
persists, replace theprobe/cable.

Software problems

Install the software

Broken Main PCB

Replace Main PCB

Broken Probe PCB

Replace Probe PCB

Error messages: “Error”

Error in Active Probe

See Probe Manual.

Error messages: “Check
Sensor, Voltage Error”

Sensor voltage from thegas sensor out of therange 300 - 3500 mV

Check that the sensor isproperly connected to theprobe. If the fault persists,
replace the sensor.

Error messages: “Check
Sensor, Temp.”

Diode voltage from thegas sensor out of therange 544 - 612 mV

Check that the sensor isproperly connected to theprobe. If the fault persists,
replace the sensor.

No sound in Detection
Mode and
Analysis Mode.

Sound set low

Press the + button repeatedly.

Broken speaker

Replace the speaker

Fuse broken

Check the fuse.

Broken Main Cable

Replace the Main Cable

No picture on display, no
soundDischarged battery
Broken Main PCB

Replace the Main PCB

Display setting may be
wrong

Watch the display fromthe side at a low angle
and aim a lamp at thescreen. Try to see the text
so that you can enter the
Display Settings menu andadjust contrast andbrightness.

Display or Inverter Cable
loose

Reconnect loose wiring

Display Lamp broken

Replace the display

Loss of spots or black lines
on screen

Internal contact to LCD
brokenReplace the display

Bad sound out of the
speakerBroken speaker

Replace the speakerNo picture but only soundwhen exposed to gas.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 74

D 200EN- 75

Fault symptoms

Fault

Measures

Short operating time onbattery modelOld or broken battery

Replace the battery

The time and dates resets
at restart

The clock battery is empty

Replace the clock batteryon the Main PCB

Settings lost on restart

The main PCB Memories
broken (Flash Memories)

Replace the Main PCB

Low or no gas sensitivity

Old or broken gas sensor

Replace the gas sensor

Probe PCB broken

Replace Probe PCB

Sensistor ISH2000 Technical Reference Manual (TRM)D 300
D 300 Reference leak trouble guide
It is very important that we advice the end user to carefully study the manuals
for how to take best care and handle the reference leaks.
Here are a couple of mistakes a user can make:
1 The small leaks with a gas container (E, F and G) are delivered at atmosphericpressure due to transportation limitations. This means that the end user has tostart by filling the gas container to the indicated pressure. This filling MUST be
conducted according to the included instructions to ensure you get as close as
possible to a 5%H2/95%N2 gas mix inside the container. Otherwise you risk
having an undefined gas mix in the container, and what is on the certificate is inthat case no longer valid.
2 The smaller leaks that have a gas container are sometimes emptied by the
new user, simply because he sees the fill valve and "have to try what it is for".
This way you empty the container quite effectively. After this you need to refill
the container. See above in point 1 for possible problems.
3 When users connect leak A, B, C to the gas line they sometimes forget thatthe hose from the bottle may be full of air to start with. If they do this the leakwill appear to be very difficult or impossible to pick up by the detector simply
because there is mainly air passing through the leak to start with. What theyshould do is purge the hose from air before attaching it to the leak. Also
remember to use the purge valve on the leak itself to release any air trapped
inside the leak housing, and replace it with tracer gas.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 76

This page intentionally left blankEN- 77

Sensistor ISH2000 Technical Reference Manual (TRM)

E

Maintenance sheets
Sensistor ISH2000 Technical Reference Manual

Detailed content

E 100

Maintenance operations introduction

E 120

Sending the leak detection for reparation to a service center

E 130

Functional verification

E 140

Service Menu

E 160

Software and documentation evolution

E 230

Sensistor ISH2000 Main board

F 240

Sensistor ISH2000 Wiring diagram

E 410

Instrument maintenance

E 411

Probe maintenanceSensistor ISH2000 Technical Reference Manual (TRM)

EN- 78

E 100E 100 Maintenance operations introduction
Electrostatic discharge(ESD) protected equipment
To a greater or lesser extent aIl contact between objects, separation of one itemfrom another, or sliding of one thing on another, causes a disturbance of electrical charge. When charge disturbances take place faster than charge redistribution, static charge accumulates.
Amongst the greatest generators of static electricity are people. It can be readily
shown how in ordinary ambient conditions a person's electrical charge, measured in Volt, is constantly changing. It can move up or down at every step, as
they sit or rise, when they touch things, or as another person passes nearby.
Consequently if people handle electrostatic discharge sensitive devices (ESD)without appropriate precautions, there is a real risk they will unwittingly
damage them.
Electrostatic discharge (ESD) has been recognized as a potential hazard forsemi-conductors and integrated circuits.
To protect devices from the unwanted effects of ESD, two key measures must
be taken and applied at aIl times:
1. devices must be handled exclusively in an ESD Protected Area (EPA). ln
essence, an EPA is a defined space within which aIl surfaces, objects, people
and devices are kept at the same potential.
2. devices must be transported from one EPA to another only in ESD shielding
packages.
The issue is to save defects on customer sites for the integrated electronicboards in leak detector, drytels, controllers and accessories.
The ESD reduce the useful life of the electronic boards. There is no immediate
consequences during the assembly of the electronic devices but there is a premature aging of components.
All the Service Centers must be equipped to protect the INFICON products
against the ESD during repair process.
On Customers site, during exchange or maintenance of electronic card, theengineer must wear the ESD coat and use disposable wristband.
To achieve this goal, we invite you to order the “ESD KIT” and install it in yourService Center as soon as possible.

Safety instructions
See B 100 “B 100 Safety instructions” on page 29

Icons usedx

x mm Allen key

TORX screwdriverPhilips head screwdriver

Voltmeter

Screwdriver for slottedhead screws

OhmmeterFigure E-1: Icons used

EN- 79Sensistor ISH2000 Technical Reference Manual (TRM)E 120E 120 Sending the leak detection for repair
to a service center
Product return form
See “How To Contact INFICON” on page 103.

WEEE standard + RoHS
WEEE directive:
INFICON products like portable helium leak detectors, gauges or vacuum measurement devices fall within the scope of the WEEE directive.
INFICON AB provides a collection and recycling service for used electrical andelectronic products.
Any obligation of the manufacturer to take back such equipment shall apply
only to complete not amended or modified equipment, using Alcatel Vacuum
Technology original spare parts, delivered by Alcatel Vacuum Technology, containing i.e. all its components and sub-assemblies. This obligation will not cover
the shipping cost to an INFICON AB take back facility.
RoHS directive:
The RoHS directive aims to limite the use of certain substances (lead, mercury,cadmium, hexavalent chromium, PBDE and PBE), commonly used in designingelectrical and electronic equipment.
INFICON products do not fall within the scope of the RoHS directive, but as wewish to protect the environment, many actions have already been launched:• Inventory of all items which include these substances• Action to eliminate these substances• Qualification of new materials, new parts, etc.
All INFICON products are RoHS compliant since December 2007.

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 80E 130E 130 Functional verification
Sensitivity Test
Sensitivity Test has been designed to help to double-check Hand Probe sensors
and H65 sensors for Sensistor ISH2000 before delivery to end customers. Everysensor has been tested thoroughly before delivery from the factory. It happens,however, that sensors lose sensitivity while kept in stock.
By following these instructions the user will get the information you need toaccept or reject a new sensor before delivery. The test is done using a referencegas containing 10 ppm H2 in synthetic air.
You need the following equipment:• Leak Detector (Sensistor ISH2000) with probe cable and hand probe.
• Reference gas 10 ppm H2 in synthetic air.
IMPORTANT:A sensor can be calibrated using reference gas or a reference leak. There aresome fundamental differences between these two methods:• When using a reference leak you add Hydrogen to the background.
• When exposing the sensor to reference gas you replace the background(ambient) with the reference gas.
It is important, in both cases, to calibrate in a non-polluted background (i.e.
typically 0.5 ppm Hydrogen).
When using a reference gas this is essential. If the background is close to theconcentration in the reference gas you will get no signal. If the backgroundconcentration is higher than the reference you will even get a negative signal(i.e. signal appears when reference gas is removed).
When using a reference leak the problem is less pronounced as the leak adds
gas to the background. The calibration will however be significantly affected if
background is higher than the resulting concentration added by the leak.
Calibrating in a high background will, however, always result in making thedetector more sensitive. This means quality is not affected. Some “good” products may be rejected but no bad products will be passed.
On the following page are detailed instructions for testing the sensor with 10
ppm Reference Gas.
Using Reference Gas
1. Preparing the Reference Gas
a. Check the reference gas type ( must be 10 ppm Hydrogen in synthetic
air)b. Connect pressure regulator to the gas bottle. IMPORTANT! Never use aregulator that has previously been used for the 5% tracer gas. This may
contaminate the reference gas bottle and alter the concentration!
c. Connect a hose to the gas regulator complete with mouthpiece or apiece of 11-15 mm inner diameter hose to slide over probe tip.

EN- 81

Sensistor ISH2000 Technical Reference Manual (TRM)E 130Probe tip
11-15 mm

Gas flow

Figure E-2: Connect a hose to the gas regulator

d. Purge the hose with low flow of reference gas (1-5 cc/s). If you put thehose in a glass of water it should NOT "boil" the water but only release agentle stream of bubbles.
2. Preparing the Hydrogen Sensor
a. Switch power OFF on Sensistor ISH2000
b. Connect the probe and probe cable according to Manualc. Start Sensistor ISH2000 in service mode by doing the following:i. Press and hold the right button while switching power ON.
ii. Release button when text screen appears. (If logo appears you
released the button too late - try again)iii. Go to service mode display after warm up period.
d. Remove probe tip protection cap!
e. Wait minimum 10 minutes more to stabilize sensor.
3. Sensitivity Test with Reference Gas 10 ppm
a. Make absolutely sure there is no abnormal increase of Hydrogen in the
background ( i.e. avoid: smoking in the room, releasing tracer gas in big
clouds, flatulence etc). Make sure you have as normal background of H2 aspossible (0.5 ppm).
b. Check that the Signal is 0.00E+00 (see See Figure E-3:"Service mode
screen")Figure E-3: Service mode screen

c. Open a gas flow of about 1-5 cc/s.
d. Wait until you are sure there is only the 10 ppm gas in the hose.
e. Insert the probe tip (without protection cap) minimum 1 cm into theopen end of the hose. See See Figure E-2:"Connect a hose to the gas regulator". There must be no pressure on the sensor.
f. Wait until the signal has stabilized (takes a few seconds).
g. Read the Signal and then remove the probe. Close gas flow. The Signal
is given in scientific (engineering) format.
Examples:• 7.50E-01 = 7.5 x 10-1 = 0.75
• 1.40E+0.0 = 1.4 x 100 = 1.4

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E 130h. Acceptance level for new sensor is minimum 1.2 = 1.20E+00.
i. If the Signal is below 1.2: Wait at least 10 minutes (leave instrument on)
and then repeat the test. If the Signal (after a repeated test) is still below
1.2 the sensor is to be considered no good for delivery.

Sensitivity fault analysis
The following questions below are useful to detect a problem.

Detector
message:“ Check
Probe and
Cable?”

Yes

Check that the probe
cable is properly
connected to the probe
and the instrument.

Detector
message:“CheckSensor,Voltage Error”

Yes

Check that the sensor
is properly connectedto the probe. Refer to
D 200 General trouble-shooting guide.

Detector
message:“ Check
Sensor, Temp”

Yes

Check that the sensor
is properly connectedto the probe.Refer to
D 200 General trouble-shooting guide

No

False signals

Quick orslow
signals?

< 1 sec.

No explanation

1 - 5 sec.

Electrical fault.
Bad cable orconnector, or
earthing problem .
This is most
likely a handlingerror bycustomer.

Type ofproblem?

Low sensitivity>5 sec .

The Reject levelshould have been
designed to 10 ppm
H2 or more.
For Reject levels
it is normal to change
sensor 1-2 times per
year.

Check for gas spillage
in the background.
(could be exhausts,
smoke, tracer gas or
gastric gases ).
This is an application
problem. Not awarranty issue.

No explanation

Frequent unexplained
Service Mode Signals*
above 0.18 that can be
confirmed at the service
center are grounds forwarranty replacement.

* Service Mode Signal is read in Service Mode. See instructions for Sensitivity Test

Figure E-4: Sensitivity fault analysis

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Sensistor ISH2000 Technical Reference Manual (TRM)

E 140E 140 Service menu
The Service Mode is reached by starting the instrument and at the same time
hold the right button down on the panel. After start a new main menu called
Service Settings will appear.

Show Password
Shows the chosen password in case the customer has forgotten the password.
Contact INFICON AB to have the code sent to you.

System Reset
Resets all parameters to default settings, stored in the detector and the prob if
it is connected. Contact INFICON AB to have the code sent to you.

Detector Signal Level
The Detector Signal Level is the level below which the sensor is considered tohave recovered from the last gas signal. It decides when the DET_SIGNAL output will come on. This signal can be used to block the start of a calibration or
new test cycle in semi and fully automatic testers.
If DET_SIGNAL is high then this means that the sensor has detected hydrogenand has not yet recovered.
Detector Signal Level can be adjusted in the Service Settings menu. You canincrease Detector Signal Level if you have many small disturbing signals. A highsetting of Detector Signal Level gives better tolerance to “noise” gas signals at
the expense of accuracy. A low setting gives best accuracy but lower tolerance
for “noise” gas signals. The Detector Signal Level is set as 1 to 100% of theReject Level. Default is 20%.
NOTICE! Increasing the Detector Signal Level may give poorer accuracy.

Trigg Level
Upper Limit setting for Peak hold in analysis mode.

Minimum Calibration Time
Lower limit setting for the timer which is used during calibration. Contact INFICON AB to have the code sent to you.

Battery Mode
Selection of battery power. Only used to adapt software for the battery model.

Number of Significant Digits
Choice of a number of significant numbers in Analysis and Combined Mode. It
is used when a more exact measurement is needed. A good control of the environment and calibration is required to be useful. Contact INFICON AB to havethe code sent to you.

Debug Mode
This mode is used during service and software development. Service Mode Thismode contains useful information to analyse the gas sensor behavor. If the
instrument starts in the Service Mode then it is possible to reach APC Service
Mode.Under APC Service Mode is useful information to check timers, I/O on
the Probe Control Port, and other.
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E 160E 160 Software and documentation
evolution
Instrument software
VersionProbe Software Version

Date

Notes

Info/changes

6.01

1.01

2010-09-30

First release.

-

6.02

1.02

2010-10-28

At probe upgrade,errors appeared
because of use of too
short variable type attimeout control.
Result print format
using ”Analysis Data
Output” corrected.
(Log-a-Leak worksnow). “n.nnE+ee”.
Probe connection andreconnection,
approved user interface (quicker responsat disconnect and connect of probe).
RS232 command “C?”and J?” works now.

6.02

EN- 85

1.03

2011-01-14

Temp error limits
ajusted.

Sensistor ISH2000 Technical Reference Manual (TRM)E 230E 230 Sensistor ISH2000 Main board
Component locations on board

Figure E-5: Main board

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E 240E 240 Wiring diagram Sensistor ISH2000
Main PCBJ7
KB 1016

Probe

KB 1017

LEDS

J12
J4
J8

J6

J2

J14

KB 1015

KB 1020

KB 1021

Keyboard
Display / LCD data

Inverter

J5
J13
J9

KB 1018

Earphone jack

KB 1019

Speaker

E-6: Main PCB

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E 410E 410 Instrument maintenanceTools needed

P/N

Sensistor ISH2000

Tools

591-533

Torx screw MRT
M3x10

Torx TX10

591-791

Torx screw MRT
M3x12

Torx TX10

591-790

Philips head screw
MFX-Z 3x6

Philips head screwdriver PH1

591-493

Slotted head screw
MCS M1.6x8

Screw driver for slotted head screw

591-499

Hexagonal nuts
M6M M1.6

6 mm spanner591-487

Torx screw MRT4x20

Torx TX20

591-488

Torx screw MFT
M4x8

Torx TX20

591-490

Allen Key Screw
MC6S M5x55

4 mm Allen key

591-787

Philips head screw
RXK-Z ST2,2x4,5Philips head screwdriver PH1

591-607

Philips head screw
M3x8 svartkrom

Philips head screwdriver PH1

591-013

Nut M6M M3 A2

6 mm spanner591-538

Screw Lock UNC G 5
mm + S 3mm

4,5 mm spanner591-452

Allen Key Screw K6SF
M8x10 10.

5 mm Allen key

Purchase fromthe supplier

Spanner for nochednuts phoenix prob

DCH.91.161.PA

Sensistor ISH2000 Technical Reference Manual (TRM)

Supplier

LEMO

EN- 88

E 410
Dismantling Sensistor ISH2000

1. Turn off the instrument andremove power supply.
2. Unscrew the two torx screws(T20) on the back side of the unit.

Figure E-7: Unscrew the two torx screws
3. Open the instrument by pullingout the front as shown in the picture to the right.

Figure E-8: Pull out the front

EN- 89Sensistor ISH2000 Technical Reference Manual (TRM)

E 4104. Unscrew the four torx screws andremove the power supply.

Figure E-9: Remove power supply

Dismantling Sensistor ISH2000C

1. Unscrew the two torx screws on
the back side of the unit.

Figure E-10: Turn off the instrument and start dismantling

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 90E 410
2. Open the instrument by pullingout the front as shown in the
picture to the right.

EN- 91

Sensistor ISH2000 Technical Reference Manual (TRM)

E 4103. Pull out the front enough toloosen the three connectors.

Figure E-11: Pull out the front

Figure E-12: Connectors

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 92

E 410
4. Remove the battery as shown in
the figures to the right.

Figure E-13: Remove screws

Figure E-14: Battery

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Sensistor ISH2000 Technical Reference Manual (TRM)

E 410
Dismantling Sensistor ISH2000P

1. Turn off the instrument andremove power supply.
2. Unscrew the two Allen Key Screw
M6 on the back side of the unit.

Figure E-15: Unscrew the two Allen Key Screws
3. Open the instrument by lifting
the inner housing

Figure E-16: Open instrument

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 94

E 410Replacement of main PCB

1. Separate the cables as shown in
the picture to the right.

Figure E-17: Separate cables

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Sensistor ISH2000 Technical Reference Manual (TRM)

E 4102. Release the PCB by losing thelocknuts on the D-Sub connectors
and the LEMO connector.

Figure E-18: D-Sub

Figure E-19: LEMO connector

Figure E-20: PCB
Sensistor ISH2000 Technical Reference Manual (TRM)

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E 410
Removal of speaker
Unscrew the speaker Philip HeadScrews as shown in the picture to
the right.

Figure E-21: Removal of speaker

Removal of display

Remove the display by unscrewing
the 4 Torx screws as shown in the
figure to the right.

Figure E-22: Removal of display

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Sensistor ISH2000 Technical Reference Manual (TRM)

E 410
Removal of panel buttons

Unscrew the panel button card
Philip Head Screws as shown in the
pictures to the right.

Figure E-23: Unscrew the panel button card Philip Head Screws

Figure E-24: Panel button card
Note: When mounted, the highbuttons shall be mounted in thetwo middle holes!
When mounting the Main PCB thelower nut on LEMO connector with
washer must be located 6 mmabove the PCB surface.

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E 411
E 411 Probe maintenanceTools needed
P/N

P50/P50 FlexTools

598-160

Nut probe tip

10 mm spanner591-802

Allen key S6SS M4x6
steel

2 mm Allen key

591-803

Allen key screw
MC6S M3x20 fz

2,5 mm Allen key

T.B.A.

Spanner for nochedprobe nuts

DCH.91.161.PA

Supplier

LEMO

Changing the Probe Tip

1. Turn off the instrument.
2. Loosen the safety nut withthe appropriate tool from INFICON AB or with a 10 mm
wrench.

Figure E-25: Loosen the safety nut

3. Remove the tip by hand. The
o-ring creates some friction.
4. Remove the sensor by drawing it straight out.
5. Mount a new sensor. Make
sure it turns in the correct direction.
6. Observe the contact area
between the probe pipe and thesensor. They should contact
each other.
7. Mount the union nut.
8. Tighten with a suitable tool.

EN- 99Figure E-26:

Sensistor ISH2000 Technical Reference Manual (TRM)

E 411
Dismantling probe

1. Loosen the LEMO contact nut
using a spanner for noched probe
nuts.

Figure E-27: LEMO connector
2. Unscrew the 2 screws at the buttom as shown in the picture to theright.

Figure E-28: 2 screws
3. Gently separate the 2 parts.

Figure E-29: Separated pars

Sensistor ISH2000 Technical Reference Manual (TRM)

EN- 100

E 411
4. When changing the PCB thecables must be removed bysoldering.

Figure E-30:
5. To replace the probe tube release
the safety screw by using an Allen
key. Heat the probe connection
with a warm gun lift and loosen theprobe tube. At assembly the probetube must be bonded with Loctite.

Figure E-31:
Note: When mounting, ensure thatthe nut on the Lemo connector on
the the PCB is properly adjusted(distance shall be 9 mm from
LEMO's edge to the nut).

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Sensistor ISH2000 Technical Reference Manual (TRM)

F

AppendixSensistor ISH2000 Technical Reference Manual

Detailed content

F 100

Service

F 800

Tools

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F 100F 100 Support by INFICON
How To Contact INFICONFor Sales and Customer Service contact nearest INFICON Service Center. The
address is found on the website: www.inficon.com
If you are experiencing a problem with your instrument, please have the following information readily available:• The serial number and firmware version for your instrument,• A description of your problem,• An explanation of any corrective action that you may have already attempted,
and the exact wording of any error messages that you may have received.

Returning you instrument to INFICON
Please use the Product Return Form which was included with the product atdelivery.
Do not return any component of your instrument to INFICON without first
speaking with a Customer Support Representative. You must obtain a Return
Material Authorization (RMA) number from the Customer Support Representative.
If you deliver a package to INFICON without an RMA number, your package will
be held and you will be contacted. This will result in delays in servicing yourinstrument.
Prior to being given an RMA number, you may be required to complete a Declaration Of Contamination (DOC) form if your instrument has been exposed toprocess materials. DOC forms must be approved by INFICON before an RMA
number is issued. INFICON may require that the instrument be sent to a designated decontamination facility, not to the factory.

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Sensistor ISH2000 Technical Reference Manual (TRM)

F 110F 110 Disposal of product when taken out ofservice
According to EU legislation, this product must be recovered for separation ofmaterials and may not be disposed of as unsorted municipal waste.
If you wish you can return this INFICON AB product to the manufacturer forrecovery.
The manufacturer has the right to refuse taking back products that are inadequately packaged and thereby presents safety and/or health risks to thestaff.
The manufacturer will not reimburse you for the shipping cost.
Shipping address:
INFICON AB
Westmansgatan 49
582 16 LINKÖPING´
SWEDEN

RoHS and WEEEFor information regarding RoHS and WEEE directives, please contact
INFICON AB

Sensistor ISH2000 Technical Reference Manual (TRM)

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F 800F 800 Tools
Sensistor ISH2000 software
Sensistor ISH2000 Installer“Sensistor ISH2000 Installer” file contains the software for instrument andprobe, as well as several service functions.
Installation instructions
1. Turn off the Sensistor ISH2000
2. Connect a a standard RS232 Null Modem cable between the computer andthe instrument.

Figure F-1: PC and instrument

3. Double click the “Sensistor ISH2000 Installer” fileFigure F-2: Sensistor ISH2000 software installer

4. Choose program and com port
5. Press download

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Sensistor ISH2000 Technical Reference Manual (TRM)

F 8006. Turn on the instrument
7. Wait for download
8. The following windows on next page appears when the installation is complete.
9. Repeat for downloading probe software

Figure F-3: Sensistor ISH2000 installer after installation of the instrument software

Figure F-4: Sensistor ISH2000 installer after installation of the probe software

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EN- 106

F 800APC Installer
Installation instructions:
1. Turn off the instrument
2. Connect a a standard RS232 null modem cable between the computer andthe instrument.
3. Double click the “APC Installer” file
4. Choose probe, language and com port
5. Press download
6. Turn on the instrument
7. Wait for download
8. The following window on next page appears when the installation iscomplete.

Figure F-5: APC Install after installation of softwareEN- 107

Sensistor ISH2000 Technical Reference Manual (TRM)

INFICON AB, Box 76, SE-581 02 Linköping, Sweden
Phone: +46 (0) 13 35 59 00 Fax: +46 (0) 13 35 59 01
www.inficon.com E-mail: reach.sweden@inficon.com