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Hydrogen Leak Detector
Sensistor ISH2000 HySpeed
EN
Operating Instructions
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Welcome to Sensistor ISH2000 HySpeed
Dear customer,
This manual provides user information for installing and operating the Sensistor ISH2000
HySpeed unit. For start-up installation advice please contact the supplier.
The Sensistor ISH2000 HySpeed is a development of the ISH2000 range of hydrogen leak detectors adapted for rapid automated leak detection in packaging lines. The leak detection process is built on the Sensistor technology that uses diluted hydrogen as tracer gas. The tracer gas is a safe and inexpensive standard mix of 5% hydrogen (E949) and 95% nitrogen (E941). These gases are commonly used as packaging gases, for example, and have been approved as food additives.
The Sensistor ISH2000 HySpeed comprises a compact, panel-mounted instrument and a wired sampling probe. For a complete test station, it is normally necessary to install equipment for handling the packages and for communication with the leak detection instrument.
In principle, in-line leak testing with the Sensistor ISH2000 HySpeed suits all types of packaging where it is possible to create over-pressure for the enclosed tracer gas so as to permit leak testing. All types of flexible plastic packaging, such as bottles, bags for powders and creams, bag-in-box bags, trays and tubes can be tested.
When reading this manual, please pay particular attention to Warning, Caution and
Notice found throughout the text. The Warning, Caution and Notices are defined in chapter 1.1.
This product complies with the requirements of European
Directives, listed in the Declaration of Conformity found on
page 49 in this document. These Directives are amended by
Directive 93/68/E.E.C (E.C. Marking).
Copyright/Intellectual property
The use of INFICON AB products are subject to copyright and intellectual property rights in force in any jurisdiction.
All rights reserved, including copying this document in whole or in any part without prior written authorization from
INFICON AB.
Though INFICON AB believes reasonable efforts have been made to ensure the accuracy of the information contained in the document, it may include inaccuracies or typographical errors. INFICON AB reserves the right to change the information inside the document without further notice.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Contents
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
1 User information
Read this user manual carefully before using the Sensistor ISH2000 HySpeed.
1.1 Notes and safety notices
This manual contains warnings and cautions concerning the safe use of the product.
See definitions below.
WARNING!
Warning indicates a hazardous situation which, if not avoided, could result in death or serious injury. It is important not to proceed until all stated conditions are met and clearly understood.
CAUTION!
Caution indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. It is important not to proceed until all stated conditions are met and clearly understood.
NOTICE!
Notice indicates instructions that must be followed to avoid damage to the Sensistor
ISH2000 HySpeed or other equipment.
Note: A Note is used to indicate information that is important for trouble-free and optimal use of the Sensistor ISH2000 HySpeed.
1.2 Document outline
The document is devided in two main parts:
• Getting started
• Reference section
The Getting started part consists of step by step case examples, explaining how to use the Sensistor ISH2000 HySpeed in a variety common situations. The Reference section consists of in depth explanation and additional information, which completes the user manual with all relevant information.
1.3 Conventions used in this book
In this user manual the following text style ( hardware command
) is used for references to hardware commands or button labels, while this text style (
software command
) is used for references to software commands and menu choices.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
2 Description of equipment
2.1 Sensistor ISH2000 HySpeed
Sensistor ISH2000 HySpeed is a leak test detector optimized for high speed leak testing. The model is particularly aimed at testing packages, but possible to use for other applications as well where the time allowed for a LEAK/NO LEAK decision is extremely limited. The testing speed can be up to four tests per second. The detector is designed for integrating in a packaging machine or similar applications.
If you intend to make the leak test using accumulation, shell damps, scanning or by hand sniffing we recommend the standard model of Sensistor ISH2000.
Sensistor ISH2000 HySpeed is equipped with a number of powerful functions making it very 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.
The model consists of one part apart from the manual, etc:
Fig 2-1. Sensistor ISH2000 HySpeed
6
Item
1
7
8
Description
Detector unit
User manual (not shown)
Product return form (not shown)
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
3 Controls and connections
The controls and connections are discussed and shown in this chapter.
Fig 3-1. Sensistor ISH2000 HySpeed controls and indicators.
1
6
2
1
3 3 3 3
4 5
Item
3
4
1
2
5
6
Description
Display
Loudspeaker
Control push-buttons
Earphone socket
Probe connector
LEDs
3.1 Display
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.
3.2 Push-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).
3.3 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
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Reject Level limit.
• Red fixed light together with
Reject
on display means the instrument has detected a leak larger than the set Reject Level limit.
•
Red flashing rapidly, check message on screen. (See “Trouble-shooting” on page 42.)
3.4 Ports and connections
Sensistor ISH2000 HySpeed
Fig 3-2. Sensistor ISH2000 HySpeed ports and connections.
3
1
2
4
5
Sensistor ISH2000 HySpeed Rear View
Item
3
4
1
2
5
Description
Probe connection
Ground screw
Power connector
Probe control port
Printer port
NOTICE!
Always connect all four wires to the Power connector to
24VDC in order to operate.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
4 Precautions
Read this user manual carefully before using the instrument. Hydrogen Leak
Detector Sensistor ISH2000 HySpeed is extremely selective. Only Hydrogen Sulphide
(extremely toxic) gives a comparable response to hydrogen.
4.1 When working with gas
The normal risks associated with working with all compressed gases must be considered.
WARNING!
Pure hydrogen is a flammable gas. Only use ready-made 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 in this manual it implies that the hydrogen gas is safely mixed with Nitrogen in the proportions 5% H
2
-
95% N
2
.
WARNING!
Since the tracer gas mix contains no oxygen, releasing large amounts of gas in a confined space may lead to asphyxiation.
10
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 result in 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.
Note: INFICON AB can not take any responsibility for the consequences arising from the inappropriate use of certain test pressures.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Pressure shocks might cause strong sounds which can cause impairment of hearing.
Check that all relevant legislation and safety standards are complied with before putting Sensistor ISH2000 HySpeed into service.
4.2 Hydrogen Tracer Gas for leak detection
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 % hydrogen in nitrogen mixes with air there is not sufficient energy to support a flame, irrespective of the ratio of air-togas.
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 in nitrogen mixes with air there is still very little energy available. Only in exceptional circumstances can a flame be selfsupporting. However, such mixtures cannot detonate.
WARNING!
Hydrogen/nitrogen mixtures containing approximately more than 15% hydrogen can detonate when mixed in certain proportions with air.
NOTICE!
Never make your own mixtures. Only use readymade mixtures or use a certified hydrogen/ nitrogen mixture mixer installed by your gas supplier.
4.3 Interferences
Most tracer gas methods suffer from some sort of interference. Either the detector is sensitive to other gases or vapors, or there are other sources of the gas present to which the detector is sensitive.
Some examples of possible hydrogen sources:
• Engine exhaust
• Battery charging stations
• Cigarette smoke
• Breathing air
• Human flatulence
• Scratching on aluminum surfaces
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
5 Working principle
5.1 Leak detection methods
Leak detection or leak testing can easily be done with help of Sensistor ISH2000
HySpeed.
By pressurizing the test object with a tracer gas, consist a mix of 5% hydrogen and
95% nitrogen, all hole and capillaries will be filled up with the tracer gas.
The tracer gas penetrates through leaks and out on the outside. On the outside the leaks position will be able to detect and the size of the leak be able to measure by the leak detector instrument with a tracer gas-sensitive probe.
5.2 Gas sensor Technology
The Sensistor ISH2000 HySpeed leak detector is using 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 a metal alloy (metal hydride) layer.
Only hydrogen can diffuse into the metal and this makes the sensors practically insensitive 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 in order to ensure perfect functionality. It also automatically compensates for background gas.
5.3 Condition for leak detection
To use the leak detector the test object must be filled and pressurized by tracer gas
(95% N
2
/ 5% H
2
) to get a gas flow through the leak. The tracer gas is a standard welding gas of industry quality, easy to obtain at low cost. The generic name is
Forming Gas. Appropriate gas filling equipment can be obtained from the leak detector supplier.
Be careful of how tracer gases are handled after use. Released tracer gas contaminates the surrounding air with hydrogen and can complicate the following measurements for a time. Ensure that the tracer gas is ventilated away from the target area, preferably to the outside of the building.
5.4 Leak detection modes
The detector operates in three modes:
• The leak locating mode (Detection Mode), mainly used for detecting and locating leaks but not quantifying them.
• The hydrogen measurement mode (Analysis Mode) measures the concentration of hydrogen.
• The Combined Mode, (default mode) which is a combination of Detection and
Analysis mode.
The Detection Mode operates continuously while the Analysis Mode determines the hydrogen concentration (and calculates a corresponding leak rate) in a step measurement. Detection Mode gives no numbers. It therefore needs no actual
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions calibration. The sensitivity of the sound signal and the moving bar on the display is set manually or automatically, see below.
When using the instrument in Analysis Mode, it must be calibrated as described. See
“Calibrate the leak detector” on page 17 in order to give correct figures.
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6 Operating the detector
6.1 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 to detect.
• 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 Settings menu).
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 in
when the Detection Mode is displayed.
6.2 To Locate Leaks
Note: The Detection Mode (or use the detection bar in Combined Mode) is used 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 a sensitivity which can be preset. See “To locate leaks” on page 24 and
“Direct Sensitivity Adjustment” on page 25.
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 a major 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 increase as 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 the detector. In such case it will not be possible to locate leaks as easily as in open spaces.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Hint: It is good practice to detect a leak, locate it, and immediately remove the probe 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 short period of time.
6.3 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 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 the change, 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 to keep 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 20 - 50000 ppm (0,002-5%) H2.
CAUTION!
• Do not open detector! Service of this equipment may only be carried out by service organisations authorised therefore by INFICON, Sweden.
• If the detector gets outer damage it must be controlled and repaired by service organisation authorised by INFICON.
• 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.
Note:
• When the instrument is put into operation the sensor withstands temporary exposure to hydrogen concentration up to 100%. Avoid long exposures to high concentrations.
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7 Calibrate the leak detector
7.1 Introduction
The leak detector is the instrument and the probe together.
This section of the user manual consists of step by step examples about how to calibrate the detector in the most common cases. For more about the calibration routine see the reference section.
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
.
The calibration parameters will be stored into the probe or in the Combox.
7.2 Calibration reference
There is a possibility to calibrate the detector by Reference Gas concentration.
A Reference contains a well-defined concentration of Hydrogen gas in ppm mixed by air or some inert gas. If you use premixed Reference gas a Certificate will normally follow the gas bottles. Reference Gas can be ordered from local gas suppliers.
Choose a calibration reference size, as follows recommendations:
• Same or higher than the Reject Level (but maximum 10 times higher)
• in the following range: 500-5000 ppm H2
Please contact the provider of the detector for help to select optimal calibration reference for your application.
7.3 Calibration procedure
Before calibration, the
Reference Value
in the
Calibration Menu
must be set. See “With reference gas concentration”.
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 to the reference gas/leak
The probe does not have to be exposed to the to the calibration gas during the whole
Calibration Time
(the time set in the
Calibration
menu while the bar is moving).
The instrument only measures the change as the probe goes from the background air to calibration gas.
While the calibration time bar is moving, the probe should be exposed to the calibration gas or reference leak. Then the display shows
Detecting Gas
and gives sound signals. Repeat the calibration routine until you can save the calibration. If the calibration is not saved, the instrument will revert to the previous value after one minute.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Note:
You will need to repeat the calibration 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 back to
Detection Mode and check functionality.
• If
Repeat Calibration
is displayed then this means that the measured value deviated more than 25% (can be changed between 1-100%) from the previous calibration. Repeat the calibration procedure.
Also set the Analysis Unit to the same as the Reference 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.
7.4 Reference value by gas concentration
The concentration of the reference gas should be near to or slightly higher
Reject
Level
the for best accuracy and always within the range of 20-50000 ppm
Set the
Reference Value
equal to the Hydrogen concentration in your reference gas.
If premixed reference gas is used, the reference value be found on the certificate of analysis issued for the gas concentration. Also set the
Reference Unit
to the same unit as that used to express the leak rate of the reference leak.
Example:
Reference gas concentration contains 100 PPM Hydrogen.
1- Set the
Reference Value
= 100
2- Set the
Reference Unit
= “PPM”
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8 Reference section
This section of the user manual consists of an in-depth explanation and additional information, which completes the user manual with all relevant information.
8.1 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 the menus so that you can always see exactly where you are.
Fig 8-1. Sensistor ISH2000 HySpeed controls and indicators.
EN
1 2 3 4
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
.
Button functions
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 the previous setting.
Use the
Esc
button (button 1) to browse backwards through the menus to the start position
Detection Mode/Analysis Mode
.
To change quickly from
Detection Mode
to
Analysis Mode
or vice versa, press button 4 three times in succession.
8.2 Engineering format
Some of the parameters of the detector are written in engineering format. This format can represent a very wide range of numbers from very small to very large numbers.
The following examples describes the format used in the detector:
1.00E+01 = 1.00 x 10
1
= 10
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1.00E+00 = 1.00 x 10
0
= 1
1.25E-02 = 1.25 x 10
-2
= 0.0125
8.3 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
See Reference section for a description of the functions.
8.4 Calibration
Calibrate
The instrument must be calibrated by using the integral calibration function to ensure it displays the correct values in
Analysis Mode/Combined Mode
. After calibration the instrument will show the correct measured values on the display. The calibration parameters will be stored into the probe or the Combox.
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 because the applications for which the instrument is used 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 lengthy period or
• is exposed to a very small gas concentration (less than 10 PPM) with long intervals 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 detect very small leaks. Therefore, make it a habit of removing the probe from the measuring point as soon as the measured value is displayed. This gives the detector an opportunity to recover.
Sensitivity too low for reject level
The Detector will warn if sensitivity of sensor is too low to safely detect a leak equal to the set Reject Level limit. The warning can be ignored and calibration updated and the CAL_CONF output will be set.
High signal! Check reference!
The Detector will warn if the calibration signal is very high. The warning can be ignored and the calibration updated and the CAL_CONF output will be set.
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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.
Fig 8-2. Sensor condition indicator.
EN
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. See further in the next section below.
Calibration messages
Table 8-1. Different messages that can be displayed during calibration.
Message Explanation Remedy
Expose to background...
Prepare the probe for calibration by holding it in hydrogen free background.
Gas signal is detected.
-
Detecting gas
Repeat calibration Calibration was not within 25% of last.
Adjustable by setting
Calibration Tolerance.
Calibration was within acceptable limit.
Normal operation, gas exposure can be interrupted.
Wait 30 s and calibrate again.
Calibration OK
No gas or unstable signal.
No gas signal or no stable signal detected during calibration.
Signal when reference gas is shut off. Happens for reference gas only.
Press Save (button 4) to store calibration in memory.
Check reference. Gas valve may be shut.
Check that probe tip is not clogged.
Background is higher than reference gas concentration. Improve ventilation.
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Message
Sensitivity too low for
Reject level
High signal! Check reference!
Explanation Remedy
Sensitivity of sensor is too low to guarantee correct response to a gas flow or concentration equal to the Reject level. The most likely reason is that sensor is too old.
Reference signal is abnormally high.
Check reference. Gas valve may be shut.
Check that probe tip is not clogged.
Check setting of Reject
Level.
Replace sensor if problem remains.
Check that reference gas mix is not replaced with tracer gas mix.
Check condition of reference.
Check that reference leak connections 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 Value
Your 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 100 PPM
• For good accuracy, use a reference gas between 500-5000 ppm hydrogen.
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, the numbers ü,
ü,
Å, Ä,Ö, å,ä,ö,%,/,(,),and - (dash).
Note:
The space (““) is not supported. The leak rate unit string will be cut short at
the first space found. See “Engineering format” on page 19.
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 the detector 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 of sensor 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.
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This is also the timeout of the Calibration line in an APC program.
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.
NOTICE!
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 the operator 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.
8.5 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.
To detect leaks
If all you wish to do is to detect the presence of a leak, that is, to find out whether there is a leak or not, then use the Detection Mode. The definition of Leak/No Leak will be ”A leak is a leak when it can be detected by the detector, set to a specific sensitivity”.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
To set up:
The operation in Detection Mode is not quantitative. No figures are given but the signal is still increasing and decreasing with 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 the Detection Mode is:
• Set up a reference leak which corresponds to the smallest leak you wish to detect.
• 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
or temporarily as a Direct Sensitivity Setting on the display (unless you have set this function to OFF under menu Sensitivity Settings. There is also an Auto ranging function which can be selected under the
Detection Mode
Settings menu.)
If the sensitivity is set very high, you may find the baseline annoyingly unsteady.
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. The reason for this is that the alarm is immediately based on the Analysis Mode when the Detection Mode is displayed, due to inaccuracies in the Detection
Mode signal.
To locate leaks
Detection 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 a sensitivity 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 refrigerator condenser tubing and the tubing has a major leak, then you will get an audio signal as soon as the probe is placed close to the condenser tubing. When the probe is moved around over the condenser, the signal will increase as the probe approaches the leak. If the signal goes off the scale, simply reduce the sensitivity setting to bring the signal within the scale. By working with the sensitivity setting in this way, you will be able to locate multiple leaks that are in close proximity to each other.
Do not expose the probe to more gas than is necessary, because it will slowly saturate with time. It is good practice to detect a leak, locate it, and immediately remove the probe 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 short period of time.
Background compensation
There is always some hydrogen gas in the background. In fresh air this is as low as
0.5 ppm (parts per million).
Sensistor ISH2000 HySpeed actively adjusts itself to the background.
Sensitivity
Sensitivity
of audio signal and signal bar in
Detection Mode
.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Note:
This does not affect the
Analysis Mode
.
Auto Range
Set this parameter to
ON
for auto ranging of sensitivity in
Detection Mode
. Sensitivity will decrease two steps if the signal reaches full scale. Sensitivity is restored to selected
Sensitivity
(See “To locate leaks” on page 24) when signal returns to zero.
Direct Sensitivity Adjustment
Setting this parameter to
OFF
will remove the sensitivity adjustment from the
Detection Mode
display. Sensitivity can still be adjusted in the
Sensitivity Settings
menu after entering password (if set).
Note:
The sensitivity setting only affects the
Detection Mode
.
Audio Threshold
Makes it possible to lower the sound to a set level in Detection Mode. The level is in
% of full Detection bar.
Reject Indicator
Makes it possible to show (not shown) the indication Reject in Detection Mode.
Audio Ready Pulse
This sets the standby sound to a silent or or pulsating tone.
8.6 Analysis mode
In
Analysis Mode
the measured value is displayed in figures. The default unit is in PPM
but it is possible to choose other units, See “Default parameters” on page 40.
To analyse leaks
The Analysis mode is used for measuring 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 the change, 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 to keep 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 remains on the display.
The period during which the measured value is displayed can be adjusted in the
Display Settings menu.
Reject level
Threshold level for Reject decisions. When this level has passed Reject it will be indicated by audio and LED signals Reject on APC-bus high.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Note:
The frequency of the acoustic signal in
Analysis Mode
is controlled by
Reject
Level
. A signal equal to the
Reject Level
will always give the same audio frequency despite the actual signal strength.
Correlation Value
Correlation Value
is used when it is necessary to correct the relation between the detector signal and the displayed number. This might be necessary when you want to display leak rate unit other than the calibrate leak rate unit. Examples: If you have a reference value in cc/s and want to show mm3/s at the screen, use 1000 as
Correlation Value.
Analysis Unit
The
Analysis Unit
is a text string with a maximum of 12 characters. It is not involved in any calculations.
The following letters can be used; Upper and lower case English letters, the numbers
0 to 9, Å, Ä, Ö, å, ä, ö, %, /, and -. Space (““) is not supported. The string will be shortened after the first space found.
Min Presentation Time
Signal values in
Analysis Mode
will never be presented shorter than this time. Values are, however, always presented until the signal has recovered. The default value is 1 second, but values from 0.1-12.0 seconds can be used.
Display Threshold
Hides all measurements under a set % of Reject Level.
Audio Threshold
Instrument is silent under a set % of Reject Level.
Reject Indications
There are three choices of Reject Level indications except the LEDs indication:
• Flashing screen
• Chopped audio signal
• Combination of indication 1 and 2.
Show Reject Level
Shows the Reject Level value on the display.
Audio Ready Pulse
This sets the standby sound to a silent or or pulsating tone.
8.7 APC Settings
APC is an abbreviation for Active Probe Control. The APC function is for the control of an active probe that has a built-in alarm, valves or pumps via Probe Control Port.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
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 another probe 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 purposes in 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 that higher signals will be underestimated as the sensor is purged before full signal has developed.
8.8 Display Settings
This section describes the different display settings of the Sensistor ISH2000
HySpeed.
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 to keep a high readability.
Screen Save Timeout
Display lamp will dim to half brightness if instrument is left idle for the number of 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
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions set brightness if any of the display buttons are pressed, if a gas signal is detected or an instrument error is detected.
8.9 General settings
This part describes the general settings of the Sensistor ISH2000 HySpeed.
Language
The Sensistor ISH2000 HySpeed user interface contains the following languages:
• English
• French
• German
• Italian
• Spanish
• Swedish
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 to lock 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.
Audio Base Frequency
This sets the lowest audio base frequency tone in Analysis and Detection Mode.
Set Clock
Real time set as hh:mm:ss. Hours and minutes can be adjusted. Seconds will automatically be set to 00 when hours and minutes have been set. Clock runs even when detector is disconnected from the power supply.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
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 HySpeed is equipped with a serial (RS232) printer port. See
Info
Contains information about software versions, Serial number, and Internet contact information.
8.10 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.
Show Password
Shows the chosen password in case the customer has forgotten the password.
Contact INFICON AB to have the code sent to you. See the web address under the section-Info.
Instrument system Reset
Resets all parameters into the instrument to default settings. Contact INFICON AB to have the code sent to you. See the web address under the section-Info.
Probe System Reset
Resets all parameters into the probe to default settings. Contact INFICON AB to have the code sent to you. See the web address under the section-Info.
Detector Signal Level
The
Detector Signal Level
is the level which the sensor is considered to have 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 hydrogen and has not yet recovered.
Detector Signal Level
can be adjusted in the
Service Settings menu
. You can increase
Detector Signal Level
if you have many small disturbing signals. A high setting 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 the
Reject Level
. Default is
20%.
NOTICE!
Increasing the
Detector Signal Level
may give poorer accuracy.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
HySpeed Parameters
Adjustible HySpeed algoritm parameters. Useful for tuning the gas metering situation.
Minimum Calibration Time
Lower limit setting for the timer which is used during calibration. Contact INFICON
AB to have the code sent to you. See the web address under section-Info.
Calibration Tolerance
Change the acceptance tolerance limit at calibration. Adjustable between 0-100%.
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 have the code sent to you. See the web address under section-Info.
Debug Mode
This mode is used during service and software development.
Service Mode
This mode contains useful information to analyse the gas sensor behavior. 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.
8.11 Combined Mode
In
Combined Mode
the bar and the sound in
Detection Mode
is combined with the figures in
Analysis Mode
, this means that at the same the signal is displayed as a bar and the measured value is displayed in figures.
The loud speaker sound follows the Detection Mode signal.
Note:
After a system reset the default mode is
Combined Mode
.
When you have located the leak then you can measure its size in the following way:
1. Remove the probe from the leak.
2. Wait until 0.0 appears on the display
3. Then put the tip of the probe on the leak.
8.12 Probe
The probe H65 is a non-sniffing probe. Gas analysis takes place in a sensor that is in the tip of the probe.
During operation the heat of the probe tip is 50ºC
Note:
There are a variety of different probes that can be connected to the Sensistor
ISH2000 HySpeed.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Changing the Probe
After attaching a probe the Sensistor ISH2000 HySpeed needs to stabilize, and the green LED should blink. If it does not, then there is a fault in the cable or the hydrogen sensor inside the probe is faulty.
When the stabilisation period is over the green LED should stay on. Before using the
Sensistor ISH2000 HySpeed the instrument needs to be calibrated. Repeat calibration after one hour to achieve greatest accuracy.
8.13 Probe Control Port
The Sensistor ISH2000 HySpeed 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.
CAUTION!
The Probe Control Port (25-pin D-type) on the back of the instrument is not a computer or printer port. Connecting a printer or any other computer device may cause permanent damage to the connected device.
Pin configuration for the different detector models is described under Model
Specific Specifications below.
See “Sensistor ISH2000 HySpeed specifications” on page 43 for electrical
specifications.
See “Status signal patterns” on page 32 for signal patterns.
Probe Control Port Connector
The control port connector is a 25-pin female D-sub. Refer to Table 8-2 for the pin configuration.
Table 8-2. Pin configuration.
Pin Type Signal name
7
8
5
6
3
4
1
2
9
10
11
12
13
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-
-
-
OUT
OUT
IN
IN
IN
IN
-
IN
-
-
IN_1
IN_2
IN_3
IN_4
GND
GND
GND
IN_0
CAL_CONF
OUT_6
GND
GND
GND
31
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Pin
18
19
20
21
14
15
16
17
22
23
24
25
Type
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
Signal name
DET_ERROR
LEAK_OUT
DET_ON
DET_SIGNAL
DET_WAIT
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
24 VDC OUT
Status signal patterns
Table 8-3. Status signals for pin 14 - 18 (see “Pin configuration.” on page 31).
Signal Function
DET_SIGNAL
DET_WAIT
DET_ON
LEAK_ALARM
DET_ERROR
Gas detected / Sensor not recovered.
High during warm-up.
High when detector is on.
Leak above Reject Level detected.
High if Probe, Sensor or Cable is broken.
DET_ERROR will go high for a short time (1-5 seconds) when the detector is switched 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 the sensor or sensor connection.
The timing of the status signals in relation to different events is described by the following 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 10 ms (0.01 s). This is the cycle time of the APC system.
After power on
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Fig 8-3. Status signals after power on.
Power off Power on Warming up Detection or analysis mode. No gas detected.
DET_ERROR
DET_ON
DET_WAIT
DET_SIGNAL
LEAK_OUT
When detecting a gas signal
Fig 8-4. Status signals when detecting a gas signal.
Gas signal
Purge level
Reject level
Detector signal level
0 PPM
DET_SIGNAL
LEAK_OUT
PURGE_LEVEL
Trigger (APC)
8.14 Printer port
The Sensistor ISH2000 HySpeed is equipped with a serial printer port. This is the 9pin D-type connector. It is used for printer connection, RS232 commands and APC driver installation.
NOTICE!
Always switch power off before disconnecting or connecting any cable.
Connector pin configuration
The printer port is a standard 9-pin male D-sub. The connecting cable is a standard
9-pin file transfer cable (Null Modem Cable). For the pin configuration refer to Table
8-4.
Table 8-4. Pin configuration of the printer port.
Pin Signal Comments
3
4
1
2
5
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(DCD)
RD
TD
(DTR)
SG
Not used
Received data
Transmitted data
Not used
Signal ground
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Pin
8
9
6
7
Signal
(DSR)
(RTS)
(CTS)
(CE)
Comments
Not used
Not used
Not used
Not used
Only pin 2 (Received data), pin 3 (Transmitted data) and pin 5 (Signal ground) are used. Refer to Figure 8-5 for the wiring diagram.
Fig 8-5. D9 Null modem cable wiring diagram
CD
RxD
TxD
DTR
SG
DSR
5
6
1
2
3
4
RTS
CTS
R1
7
8
9
3
4
5
1
2
6
7
8
9
CD
RxD
TxD
DTR
SG
DSR
RTS
CTS
R1
Selectable printer types
Most PC-printers with serial interface can be connected to the 9-pin printer port.
Parallel (Centronics) interface printer can be used if connected through a serial to parallel converter.
The port can be set up for the following printer types: PC Printer and Data Dump.
No printer
Printer output disabled. Incoming communication is enabled. Sensistor ISH2000
HySpeed 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 printer with serial interface. Parallel interface printers can be used if connected through a serial to parallel converter (see below).
Note:
The output format has been chosen to be as simple as possible to ensure that 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.
Table 8-5. Communication specifications.
Setting Value
Data rate
Data bits
Stop bits
Parity
Flow control
1200 baud
8
1
None
None
34
Note:
Due to the large variety of printers available on the market, INFICON does not take responsibility for the operation of a particular type of printer.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
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.
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 (See
“Connector pin configuration” on page 33) or ordered manually by pressing
.
Table 8-6. Probe type determines information printed.
Probe type Data printed
Hand Probe P50 / COMBOX with H65 1, 2, 3, 4, 6
Analysis data output
The
Analysis Data Output
option is intended for transferring test results to a supervising computer system such as, for example, a PLC system.
Table 8-7. Communication specifications.
Setting Value
Data rate
Data bits
Stop bits
Parity
Flow control
9600 baud
8
1
None
None
F
E
A
R
P
The data format for Analysis data output consists of nine ASCII characters. Seven
feed (LF).
Table 8-8. The character indicating the result of the test is one of the following.
Character Result of the test
C
Accept. Previous test was below Reject Level limit.
Reject. Previous test was above Reject Level limit.
Rejected by Purging. Previous test was above purge limit
(and Reject level limit).
Calibration approved. Previous cycle was calibration.
Calibration was approved.
Calibration failed. Previous cycle was calibration.
Test interrupted by “Error” that occurred during cycle
(probe or sensor error etc.).
Example:
2.5E-02R (LF)
This example is a line feed (LF), R means that the test was above the Reject Level limit, and the value was 2.5E-02.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
For passive probes (for example P50 and AP57*) data is printed when a signal is detected above
Reject Level
or when the print button is pressed. Activate this under
Measure Button
menu.
For active probes (e.g AP29eco) data is printed at end of measurement sequence.
Printing of the current value can also be requested by an RS232 command or ordered manually by pressing
. See “Connector pin configuration” on page 33.
* A custom APC program setting the MEAS flag prints as AP55/AP29eco 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!
Table 8-9. Communication specifications.
Setting Value
Data rate
Data bits
Stop bits
Parity
Flow control
9600 baud
8
1
None
None
The data format for Detection data output contains of ten ASCII characters. Nine
The print time is 50 Hz continuous streaming data.
Note:
Data rate is 25 Hz when Sensistor ISH2000 HySpeed is running in
Service Display
Mode
.
RS232 serial communication
The most commonly used Sensistor ISH2000 HySpeed functions can be started/ configured over the RS232 interface.
Table 8-10. RS232 communication specifications.
Setting No Printer PC Printer
Data
Output
Data rate
Data bits
Stop bits
Parity
Flow control
115200 baud
8
1
None
None
1200 baud
8
1
None
None
9600 baud
8
1
None
None
RS232 interface commands
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Table 8-11. Common used functions.
Command Header
Calibrate K
Measure M
Print Request
Stop Measurement
N
Q
Hand Probe
Active Probe (Installed AP)
Analysis Mode
Detection Mode
Combined Mode
X
Z
R
S
Y
K = Calibration request
Starts calibration if the Sensistor ISH2000 HySpeed has an active probe driver installed. Sensistor ISH2000 HySpeed 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 the selected driver supports active test. “F” (failed) is returned otherwise.
N = Print Request
Returns current analysis value.
Q = Set APC in stand by, (stop a measurement)
Returns a “Q”.
R = Activates probe 0 (built in P50/Combox with H65 driver)
Returns an “R”.
S = Activates probe 1 (Installed probe driver or trigg signal handler 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
Table 8-12. The following parameters can be downloaded to Sensistor ISH2000
HySpeed in
Analysis
and
Detection mode
.
Parameter Header Data
Reject Level
Correlation Value
Analysis Unit
Analysis Unit
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A
B
C
CUx n.nnE+nn n.nnE+nn
Text string (max 12 characters) x=1 to 8, 1=PPM, 2=CC/S up to 8
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Parameter Header
Timer A
Timer B
Timer C
Timer D
Purge Level
Reference Value I
H
Reference Unit J
Reference Unit (Program settings) JUx
F
G
D
E
Data
nnn* nnn* nnn* nnn* n.nnE+nn n.nnE+nn
Text string (max 12 characters) x=1 to 8, 1=PPM, 2=CC/S
* entered as integer in 100’s of seconds, 1= 0.01s, 100 = 1 s, 60000 = 600s.
Transfer of parameters
Send parameters one by one; first send the specific header (for example “A”), then wait until the RS232 transmitter unit has sent the data (approximately 20 ms), and then send the data (for example “1.00E+01”). Data 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”.
Parameters can be sent in any order you like:
• If your data was received and correct, Sensistor ISH2000 HySpeed 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 HySpeed 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 a driver to be installed before they can be used.
For driver installation you will need the following:
• APC Driver software.
• File transfer cable.
• PC computer with Windows 95 or later.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
8.15 Sensistor ISH2000 HySpeed installation
The instrument can be installed in the operator’s panel or any other flat surface of your leak tester. Mounting brackets and panel rubber seal are delivered with the detector. Refer to Figure 8-6.
CAUTION!
The detector should preferably be mounted on a vertical surface. Tilting more than 30 degrees is not recommended. Tilting more makes air circulation poor resulting in increased temperature inside detector. This will reduce contrast of display and lifetime of lamp and electronic circuits.
NOTICE!
After installation verify that ambient temperature is below 50ºC.
Fig 8-6. Panel cut out dimensions.
Free space horisontally
Free space vertically
Sensistor ISH2000
127 mm (5 inches)
EN
262 mm (10.3 inches)
Measurements:
• Panel cut out: 262 x 127 mm (5 x 10.3 inches).
• Maximum panel thickness: 8 mm (0.3 inch).
• Allow an extra 20 mm (0.8 inch) on left and right side for mounting brackets.
• Depth of open space in panel is at least 15 cm (6 inches) for Sensistor ISH2000
HySpeed to fit.
Installation process
Table 8-13. Install the detector as follows
Step Action
1.
2.
3.
Cut hole in panel according to figure above, and remove burrs.
Check that rubber o-ring is in correct position in the grove around the edge of the detector.
Put the detector in place in the panel hole.
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Step
4.
5.
6.
7.
Action
Hold the panel in place while fixing the mounting brackets to the detector (See Figure 8-7).
Align the detector horizontally and lock it by tightening the 4 set screws.
Lock the set screws with the locking nuts.
Connect ground terminal to protective ground of cabinet.
Fig 8-7. Fixing the mounting brackets.
Sensistor ISH2000 HySpeed photo of brackets
Bracket to panel screw
Bracket to unit
Bracket
See “Sensistor ISH2000 HySpeed specifications” on page 43 for electrical
connections.
8.16 Default parameters
Table 8-14. Range and default settings of all Sensistor ISH2000 HySpeed parameters.
Parameter Range Default
Analysis Unit
APC Time A
APC Time B
APC Time C
APC Time D
Audio Base Frequency
Auto Range
Audio Ready Pulse
Audio Threshold
(Detection)
Audio Threshold
(Analysis)
Brightness
Calibration Time
Calibration Tolerance
Several Choices
0.0 - 6000.0 s
0.0 - 6000.0 s
0.0 - 6000.0 s
0.0 - 6000.0 s
Several Choices
ON/OFF
ON/OFF
0 - 100%
0 - 100%
0 - 21
Min Calibra. Time-30 s
0-100%
PPM
1.0 s
0 s
0 s
0 s
400 HZ
ON
ON
0%
4%
21
10 s
25%
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Parameter Range Default
Clock hh:mm:ss
Contrast 0-20
Correlation Values 1.00E-37 - 1.00E+37
Date YY-MM-DD
Debug Mode
Detector Signal Level
Direct sensitivity adjustment
ON/OFF
0 - 100 %
-
-
10
1.00E+00 = 1
OFF
20 %
ON/OFF ON
Display Threshold
Invert Colors
Language
Measure/Print Button
Min Calibration Time
Min Presentation Time
Number of significant
Digits
Password
0 - 100%
ON/OFF
Several choices
ON/OFF
0 - 30 s
120 s
2/3
50%
OFF
English
OFF
5 s
1 s
2
Max 12 characters “” = No password
ON/OFF OFF Password protected calibration
Printer Port
Probe Button
Probe Lamp
Probe Type
Reject Indicator
Purge Level
Several choices
Several Choices
ON/OFF
Several Choices
ON/OFF
1.00E37 - 1.00E+37
Several choices
1.00E- 37 - 1.00E+37
No Printer
No Function
OFF
Hand Probe
ON
1.00E+05 = 100000
PPM
1.00E+0,2 = 100
Reference Unit
Reference Value
Reject Indication
Reject Level
Screen Save Timeout
Sensitivity
Show Reject Level
Menu Mode
ON/OFF
1.00E-37 - 1.00E37
1 - 60 min
1 - 15
ON/OFF
Several choices
OFF OFF
1.00E+02 = 100
20 min
8
ON
Combined Mode
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
9 Trouble-shooting
In case of trouble using the Sensistor ISH2000 HySpeed, try to solve the problem with these simple trouble-shooting guidelines. If the measures described below do not result in a functioning instrument, send or hand in the instrument to an
authorised service workshop for repair. See “Support by INFICON” on page 48.
WARNING!
Opening or dismantling a Sensistor ISH2000 HySpeed that is powered up can cause serious personal injury or danger to life. The instrument contains no parts that can be repaired by the user and may only be dismantled by an authorised service technician.
Table 9-1. Fault symptoms and measures.
Fault symptoms Measures
Press the + button repeatedly.
No sound in Detection Mode and
Analysis Mode.
No picture on display, no sound.
No picture but only sound when exposed to gas.
Check the fuse.
Display setting may be wrong. Watch the display from the side at a low angle and aim a lamp at the screen. Try to see the text so that you can enter the
Display Settings menu and adjust contrast and brightness. If this doesn’t help - send in the instrument for replacement of display lamp.
Table 9-2. Error messages and measures.
Error messages Measures
Check Probe and Cable. Red LED flashes quickly.
Error
Check Sensor, Voltage Error
Check Sensor, Temp.
Check that the probe cable is properly connected to the probe and the instrument. If the fault persists, replace the probe/cable.
Error in Active Probe. See Probe Manual.
Check that the sensor is properly connected to the probe. If the fault persists, replace the sensor.
Check that the sensor is properly connected to the probe. If the fault persists, replace the sensor.
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10 Sensistor ISH2000 HySpeed specifications
Table 10-1. Power supply specifications.
Power Sensistor ISH2000 HySpeed
AC mains voltage
AC mains current
Fuse
Nominal battery voltage
Operating time
Charging time
Power supply voltage
Power supply current
-
-
-
-
-
-
24 VDC
3 A max.
Table 10-2. Input and output connections.
Input/output Sensistor ISH2000 HySpeed
Power input connector
Probe control/Status port
Minimum pulse length
Input impedance
Input maximum range
Input high
Input low
Output current
4 pin Phoenix MC 1.5/5.81 Series
Detachable screw terminal.
25-pin D-sub female.
40 ms
50 kohm
-34 to +38 VDC
> 12.0 VDC
< 8.0 VDC max 0.5 A/output, max 2.5 A total
Inductive loads
Low state voltage
Low state leakage current
Short circuit protection
Output high
Output low
Serial communication port connector
Serial communication port standard
External clamp diodes recommended
Max 1.5 VDC
Max 100 µA
Thermal and electronic
> (Supply voltage - 2.5 VDC)
< 1.5 VDC
9-pol D-sub male
RS232
Table 10-3. Miscellaneous specifications.
Misc.
Sensistor
ISH2000 HySpeed
Protection (IEC529)
Net weight
IP64 (front), IP32 (back)
1.8 kg (4.0 lb)
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Hydrogen leak detector Sensistor ISH2000 HySpeed - Operating Instructions
Misc.
Overall dimensions
Environment temperature
Environment humidity
Sensistor
ISH2000 HySpeed
275 x 140 x 75 mm
(11 x 6 x 3 inches)
0-50°C
10-90% RH
Table 10-4. Gas sensing specification (In Detection Mode)
Selected unit Sensitivity
mbarl/s air (using 5% H
2
/95% N
2
as
Tracer Gas)
1 x 10
-7
mbarl/s
Table 10-5. Gas sensing specification (In Analysis Mode)
Selected unit Sensitivity Measurement range
ppm (H
2)
20 ppm 20-50000 ppm
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11 Spare parts and accessories
There are a variety of spare parts and accessories to the Sensistor ISH2000 HySpeed.
In the following table some of these are presented, for a complete list of all spare parts and accessories please visit
www.inficon.com
.
Table 11-1. Spare parts and accessories.
Part Part no.
Combox (Box for controlling the gas sensor and signal processing) 590-820
Built-in Probe H65 (Connects to the instrument via Combox) 590-250
Hand Probe PK50 (Connects to the instrument via Combox)
Hand Probe PK50-Flex (Connects to the instrument via Combox)
Hand Probe P50 (Connects direct to the instrument)
Hand Probe P50-Flex (Connects direct to the instrument)
Robot Probe R50 (Connects to the instrument via Combox)
Probe Cable C21
Length 3m
Length 6m
Length 9m
Length 4m (Spiral)
Length 6m (Spiral)
Probe Tip Protection Cap for Hand Probes P50/PK50 and P50/PK50-
FLEX
590-930
590-940
590-780
590-790
590-820
590-161
590-175
590-165
590-163
590-164
590-625
(Set of 500)
591-234
(Set of 50)
Probe Tip Filter for Hand Probes (P50/PK50) and R50
Power cable eu
Power cable uk
Power cable us
Hand Probe sensor (fit K50/PK50/R50)
Mounting kit Sensistor ISH2000 HySpeed
Phoenix connector to Sensistor ISH2000 HySpeed
O-ring seal
Reference Leaks. Standard or customer specific leaks for detector calibration
591-234
591-146
591-147
591-853
590-292
590-810
591-792
591-528 see separate
Data Sheet
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12 Support by INFICON
12.1 How To Contact INFICON
For 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.
12.2 Returning your instrument to INFICON
Please use the Product Return Form which was included with the product at delivery.
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 your instrument.
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 to process 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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13 Declaration of conformity
Declaration of Conformity
Manufacturer
INFICON AB
Westmansgatan 49
SE-582 16 Linköping
Sweden
Phone: +46 (0)13-355900
Fax: +46 (0)13-355901
Product
Hydrogen Leak Detector
Brand Names
ISH 2000
ISH 2000 C
ISH 2000 P
ISH 2000 ICE
ISH 2000 C ICE
(Table top model)
(Battery operated model)
(Panel mounted model)
(Table top model)
(Battery operated model)
The manufacturer declares the above products to be produced in conformity with the following directives
CE Marking Directive (93/68/EEC)
EMC Electromagnetic Compatibility (2004/108/EC).
LVD Electrical safety - Low Voltage (2006/95/EC)*.
WEEE Waste electrical and electronic equipment (2002/96/EC).
RoHS Restriction of the use of certain hazardous substances in electrical and electronic equipment (202/95/EC)
* Relevant only for battery charger (CE marked) on the Battery operated model.
Manufacturers declaration provided on request.
For INFICON AB, September 01, 2011
____________________________________
Fredrik Enquist / R&D Manager
EN
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: [email protected]
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Disposal of product when taken out of service
According to EU legislation, this product must be recovered for separation of materials and may not be disposed of as unsorted municipal waste.
If you wish you can return this INFICON AB product to the manufacturer for recovery.
The manufacturer has the right to refuse taking back products that are inadequately packaged and thereby presents safety and/or health risks to the staff.
The manufacturer will not reimburse you for the shipping cost.
Shipping address:
INFICON AB
Westmansgatan 49
582 16 LINKÖPING´
SWEDEN
EN
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52 OP-Sensistor ISH2000 HySpeed-EN-201203
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: [email protected]
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