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Operating Instructions Hydrogen Leak Detector Sensistor

1. Parameter Default Analysis Unit Several Choices PPM APC Time A 0 0 6000 0 s 10 05 APC Time B 0 0 6000 0 s 0s APC Time C 0 0 6000 0 s 0s APC Time D 0 0 6000 0 s Os Audio Base Frequency Several Choices 400 HZ Auto Range ON OFF ON Audio Ready Pulse ON OFF ON Audio Threshold 0 100 096 Detection Audio Threshold 0 10096 496 Analysis Brightness 0 21 21 Calibration Time Min Calibra Time 30 s 10s Calibration Tolerance 0 100 25 Clock hh mm ss Contrast 0 20 10 Correlation 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 ON OFF ON adjustment Display Threshold 0 100 4 nvert Colors ON OFF OFF Language Several choices English Measure Print Button ON OFF OFF Min Calibration Time 0 30s 5s Min Presentation Time 120s 1s Multipoint Analysis Several Choices OFF Multipoint Analysis Time 0 0 30 0s 5 0s Number of significant 2 3 2 Digits Password Max 12 characters No password Password protected ON OFF OFF calibration Printer Port Several choices No Printer OP Sensistor ISH2000 EN 201203 Parameter Hydrogen leak detector Sensistor ISH2000 Operating Instructions Default Probe Button Several Choices No Function Probe Lamp ON OFF OFF Probe Type Several Choices Hand Probe Reject Indicator ON OFF ON Purge Level 00E37 1 00E 37 1 00E 02 100 Refer
2. 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 C 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 OP Sensistor ISH2000 EN 201203 27 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 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 33 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
3. Operating Instructions EN 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 e The serial number and firmware version for your instrument e A description of your problem e 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 you 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 46 OP Sensistor ISH2000 EN
4. constant it will be gradually cancelled out over a period of several minutes For example if the background concentration for some reason should suddenly rise to 10 ppm H then the detector will give a corresponding signal which will very slowly decline to zero If you thereafter expose the probe to a leak which gives rise to another 10 ppm H then the detector will give essentially the same signal as if there were no background concentration Sensitivity Sensitivity of audio signal and signal bar in Detection Mode 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 22 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 A
5. Battery charger 4 Screw hole for mounting plate Sensistor ISH2000P Fig 3 4 Sensistor ISH2000P ports and connections o Sensistor ISH2000P Rear Views Jo Description Probe connection Ground screw Power connector Probe control port Printer port OP Sensistor ISH2000 EN 201203 EN 4 4 1 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Precautions Read this user manual carefully before using the instrument Hydrogen Leak Detector Sensistor ISH2000 is extremely selective Only Hydrogen Sulphide extremely toxic gives a comparable response to hydrogen When working with gas The normal risks associated with working with all compressed gases must be considered WARNING A 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 Hp 95 Nb WARNING A Since the tracer gas mix contains no oxygen releasing large amounts of gas in a confined space may lead to asphyxiation WARNING A Compressed gases contain a great deal of stored energy Always carefully secure gas bottles before connecting pressure regulator Never transport gas bot
6. EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 Signal name 2 GND 3 GND 4 IN IN O 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 7 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_O 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 Status signal patterns Table 8 3 Status signals for pin 14 18 see Pin configuration on page 31 Function DET_SIGNAL Gas detected Sensor not recovered DET_WAIT High during warm up DET_ON High when detector is on LEAK_ALARM Leak above Reject Level detected DET_ERROR High if Probe Sensor or Cable is broken OP Sensistor ISH2000 EN 201203 31 32 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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
7. Note You will need to repeat the calibration 2 3 times to get Calibration OK after changing setup or probe e Allow at least 30 seconds between each calibration for best accuracy e Ifthe message No Gas or Unstable Signal is displayed repeatedly go back to Detection Mode and check functionality e f Repeat Calibration is displayed then this means that the measured value deviated more than 1096 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 with reference leak When measuring leak flow you will in normal cases calibrate the detector with a 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 Note Feed the reference leak at the pressure stated on the calibration certificate If another pressure is used you must correlate the resulting flow and use this value as Reference Value Note The concentration of the reference leak should always dur
8. and 60 26 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 8 9 General settings This part describes the general settings of the Sensistor ISH2000 Language The Sensistor ISH2000 user interface contains the following languages e English e French e German e Italian e Spanish e Swedish Measure 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 the hand probe measurement to the printer port Probe Button This is for setting the different functions with the probe button These functions are as follows e Toggle Mode makes it possible to switch between Analysis mode and Detection mode e Zero detection signal in Analysis mode and Detection mode e Measure Print makes it possible to initiate sample cycles or send the values from the hand probe measurement to the printer port e 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
9. 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 OP Sensistor ISH2000 EN 201203 21 Hydrogen leak detector Sensistor ISH2000 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 e Set up a reference leak which corresponds to the
10. results 3 You might need to wait until the next measurement The instrument signals Wait 4 Repeat the procedure for the next measuring point When all measurements are made the sum of all leaks is shown If the sum of all leaks is greater or the same as the Reject Level then REJECT is shown If the sum of all leaks is under the Reject Level then ACCEPT is shown And if the sum of all leaks is greater than Reject Level before all measurements are made then REJECT is shown Use to view individual measurements To begin a new measurement action or to stop a current measurement push the probe button and hold the button for a moment 24 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions It is possible to measure or search in Combined Mode for a leak withut registering the measurement The measurement value registers only when the staple moves Multipoint Analysis Time If a dynamic number of measurement points is selected the do the measurement in the following teps 1 Push the probe button to begin the first measurement 2 Place the probe near the measurement point during the time the staples move Multipoint Analysis Time 3 You might need to wait until the next measurement The instrument signals Wait 4 Repeat the procedure for the next measuring point 5 When you sum up all the measurements push and hold on the probe button a short time Multipoint Analysis Ti
11. 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 Probe System Reset Reset 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 System Reset Resets all parameters 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 28 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions accuracy A low setting gives best accuracy but lower tolerance for noi
12. smallest leak you wish to detect e 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 e 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 ma
13. 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 hand probe P50 is a non sniffing probe Gas analysis takes place in a sensor that is in the tip of the probe The probe is equipped with a function button indicator lamps and lighting Also the probe can be ordered with a flexible neck OP Sensistor ISH2000 EN 201203 29 Hydrogen leak detector Sensistor ISH2000 Operating Instructions During operation the heat of the probe tip is 50 C Note There are a variety of different probes that can be connected to the Sensistor ISH2000 When using an active probe please refer to the respective probe manual Changing the Probe After attaching a probe the Sensistor ISH2000 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 the instrument needs to be calibrated Repeat calibration after one hour to achieve greatest accuracy Changing the Probe Tip The probe tip is replaceable and is locked with a union nut The union nut seals against contact with moisture If you are not sure a
14. 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 10 OP Sensistor ISH2000 EN 201203 17 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 1 00E 00 1 00 x 109 1 m 1 25E 02 1 25 x 102 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 e Analysis Mode e Detection Mode e 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 cor
15. 1 2 4 5 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 Data rate 9600 baud OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Setting EN Data bits 8 Stop bits 1 Parity None Flow control None The data format for Analysis data output consists of nine ASCII characters Seven characters show the value in engineering format See Engineering format on page 17 one character shows the result of the test and one character shows line feed LF Table 8 8 The character indicating the result of the test is one of the following Character Result of the test Accept Previous test was below Reject Level limit R Reject Previous test was above Reject Level limit P Rejected by Purging Previous test was above purge limit and Reject level limit 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 Example 2 5E 04R 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 04 For passive probes for examp
16. 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 13 Declaration of conformity INFICON Declaration of Conformity Manufacturer INFICON AB Westmansgatan 49 SE 582 16 Link ping Sweden Phone 46 0 13 355900 Fax 46 0 13 355901 Product Hydrogen Leak Detector Brand Names ISH 2000 Table top model ISH 2000 C Battery operated model ISH 2000 P Panel mounted model ISH 2000 ICE Table top model ISH 2000 C ICE 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 Faded fagit Fredrik Enquist R amp D Manager INFICON AB Box 76 SE 581 02 Link ping Sweden Phone 46 0 13 35 59 00 Fax 46 0 13 35 59 01 www inficon com E mail reach sweden inficon com OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions EN 14 Recycling Disposal of product when taken out of service Accor
17. 95 N gt as Tracer Gas 0 2 g a 0 2 8300 g a Typ 15 of reading within 0 1 10 x calibration point in range 0 2 420 g a Typ 10 of reading 0 1 g a OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 11 Spare parts and accessories There are a variety of spare parts and accessories to the Sensistor ISH2000 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 no Hand Probe P50 590 780 Hand Probe P50 FLEX 590 790 Probe Cable C21 Length 3m 590 161 Length 6m 590 175 Length 9m 590 165 Length 4m Spiral 590 163 Length 6m Spiral 590 164 Probe Tip Protection Cap for Hand Probes P50 and P50 FLEX 590 625 Set of 500 591 273 Set of 50 Probe Tip Filter 591 234 Power cable eu 591 146 Power cable uk 591 147 Power cable us 591 853 Fuse 2 A slow for Sensistor ISH2000 591 578 Carrying case for Sensistor ISH2000C 591 329 Battery charger for Sensistor ISH2000C 591 795 Hand Probe sensor 590 292 Mounting kit Sensistor ISH2000P 590 810 Phoenix connector to Sensistor ISH2000P 591 792 O ring seal 591 528 Reference Leaks Standard or customer specific leaks for detector see separate calibration Data Sheet OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000
18. 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 20 ms 0 02 s This is the cycle time of the APC system Note Not valid for battery operated version of Sensistor ISH2000 After power on Fig 8 3 Status signals after power on Power off Power on Warming up Detection or analysis mode No gas detected 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 Trig ger APC OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 8 14 Printer port EN The Sensistor ISH2000 is equipped with a serial printer port This is the 9 pin D type connector It is used for printer connection RS232 commands and APC driver installation NOTICE E 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 tra
19. PRE REDE UEG 10 44 When workirig With GAS ete reci expen bee ane eren ded aiu amas KNESSET AR 10 4 2 Hydrogen Tracer Gas for leak detection mmnnsnrerssraresrsrerrrsrerseeresrerearereanenrenrerrnrer rar en nere aren ennen 11 43 terferenices cuoc rten case sag oc eet bcm treu ba R rode vent ned ood exe ccv acta demain ses 11 5 Working principle eni AA EX XXX RAE X EE ANAE KIA HR LAE VITE KIRUE CER RARE RET NEEEE KA E 12 5 1 Gas Sensor Technology iie eren te Lap RNE AR eph Fe sudo RE DENNA ANSE FATE ele Lear EAR Feed ash oe 12 5 2 Condition for leak detection sssssssesrsesseerrerrsrsrerressreresr rss rensar eene KRA S SARK RESA RR sr esr n rene aa 12 53 leak d tection modes uet eese tei edocet tetas onte RR Ar AASE SAS RE been M Een 12 6 Operating the detector cone ini e E E FO eic EIER RE ERR EE CU REEER A Sd kr SOA RES NA EOS RE EE MEE 13 GAV ToDetectleaks monennen ere dr ess vd nds nar Dort ahh Avie niceties 13 6 2 TOLocate LEAKS sii renee near 13 6 3 TO Quanti Eedkss cocco Rd M MK MEME MIEL ee eso 14 7 Calibrate the leak detector esci enixa Risa ra us ra rug enn ew En ER YR a nn AER na Sa c a Sd n ara ii 15 TA Arodu RETE PDs E EE e E AA EE E E E E E E A E A E A A E 7 3 Calibration procedure 7 4 Reference value with reference leak ssssssssse eene 16 75 Reference valuewith referente gaS iinan aai PR pd 16 8 Reference section 8 1 Menu system 8 2 Engineering format 8 3 Chang
20. Tracer Gas Hydrogen diluted with Nitrogen down to a safe concentration which is the most effective and economical tracer gas for leak testing Sensistor ISH2000 detects hydrogen in air at atmospheric pressure with no need for vacuum pumping It is especially suitable for applications where high sensitivity and selectivity is required in combination with simplicity reliability and low cost This product complies with the requirements of European Directives listed in the Declaration of Conformity found on page 47 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 2 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 1 User information Read this user manual carefully before using the Sensistor ISH2000 1 1 Notes and safety notices This manual contains warnings and cautions concer
21. as not within 20 of last Wait 30 s and calibrate again Calibration OK Calibration was within acceptable limit Press Save button 4 to store calibration in memory No gas or unstable signal No gas signal or no stable signal detected during calibration Check reference Gas valve may be shut Check that probe tip is not clogged Signal when reference gas is shut off Happens for reference gas only Background is higher than reference gas concentration Improve ventilation OP Sensistor ISH2000 EN 201203 Message Sensitivity too low for Reject level Hydrogen leak detector Sensistor ISH2000 Operating Instructions Explanation 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 Check reference Gas valve may be shut Check that probe tip is not clogged Check setting of Reject Level sensor is too old Replace sensor if problem remains High signal Check reference Reference signal is abnormally high 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 Referen
22. be modified without prior notice c 1204 All information can a60e1 Publication INFICON AB nin Hydrogen Leak Detector Sensistor ISH2000 Operating Instructions 6 INFICON Hydrogen Leak Detector Sensistor ISH2000 Operating Instructions OP Sensistor ISH2000 EN Hydrogen leak detector Sensistor ISH2000 Operating Instructions Contents 1 User INT ORM GU ONA Seca ca sauces cel are a Evi eL Ea SINGS less Lud Ce a eee EE 3 1 1 Notes and Safety NOtices icit tle ede doe ede NS aati ed cid i ld t ted cce de 3 1 2 DOCUMENT OUTING seder esta gr nere snor meet Cortese van NEDAN bees e gea enge end EAA RR 3 1 33 CONVENTIONS used IN this DOOK ec caste cete tows tecta bob Arkens ui e reete date eda dae 3 2 Description of equipment corte tacit nane urne EIE y ER AEN FUR ak Een saeua S 4 231 Sensistor IS H2000 5 2 rcnt a de ot ete atro Ub tete etf Hime ure ede Data cde re 4 2 2 SensistordsH2000 C eco mitate eter teen deett cedet t auc eA a be bn c tees rates ES 4 2 3 SGNSIStOr ISH2 OO OP E m 5 3 Controls ANG connections cccee a i Aaa MEN a aed 7 3 1 Display iet Gud 3 2 Push buttons ud 3 3 LEDS i ctor ren cotes 8 2 4 Ports and connections beskars esc debet eee eu Maw av AN hee ag edlen e abana ete oed 8 4 PRECAUTIONS sinc ei sand anco OS I CER a eve Duk Ea ee FE RAGE ER RATE Va Ma eoa Du SUED SEO FU s ERR ER REY BAR FR RR K RS EN RE
23. bout changing the probe tip then we recommend that you send it to an authorized service center To change the probe tip do the following steps 1 Turn off the instrument Loosen the safety nut with the appropriate tool P N 598 147 or with a 10 mm wrench Remove the tip by hand The o ring creates some friction Remove the sensor by drawing it straight out Mount a new sensor Make sure it is in correct position Observe the contact area between the probe pipe and the sensor They should contact each other 7 Mount the union nut 8 Tighten with a suitable tool N au AW 8 13 Probe Control Port 30 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 CAUTION n 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 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 I H2000 specifications on page 43 for electrical specifications See Status signal patterns on page 31 for signal patterns OP Sensistor ISH2000
24. ce 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 e Reject level is set at 8 PPM e For good accuracy use a reference gas between 5 400 ppm hydrogen e 8PPM hydrogen in synthetic air will give best results Example for reference leak e Reject Level is set at 2 0E 4 atm cc s e For best accuracy reference leak within 2 0E 4 2 0E 3 atm cc s e Areference leak calibrated to 2 0E 4 atm ccs 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 e a known hydrogen concentration e a known flow leak The following characters can be used Upper and lower case Roman letters the numbers t U A A O 6 and dash uu 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 17 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 20 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operat
25. d gt 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 OP Sensistor ISH2000 EN 201203 7 Hydrogen leak detector Sensistor ISH2000 Operating Instructions EN 3 3 LEDs The two LEDs indicate the status of the instrument as follows e Green flashing slowly during warming up phase e Green fixed light indicates that instrument is ready and hydrogen signal is below Reject Level limit e Red fixed light together with Reject on display means the instrument has detected a leak larger than the set Reject Level limit e Red flashing rapidly check message on screen See Trouble shooting on page 42 3 4 Ports and connections The ports and connections are shown in Figure 3 2 below NOTICE Always connect all four wires to the Power connector to 24VDC in order to operate Sensistor ISH2000 Fig 3 2 Sensistor ISH2000 ports and connections INFICON AB Unk ping 180d H3LNIUd Description Printer port Probe control port Fuse Power switch Power input 100 240 VAC Screw hole for mounting plate 8 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Sensistor ISH2000C Fig 3 3 Sensistor ISH2000C ports and connections Description 1 Power switch 2 Printer port 3
26. ding 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 ELI 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 LINK PING SWEDEN 48 OP Sensistor ISH2000 EN 201203 INFICON INFICON AB Box 76 SE 581 02 Link ping Sweden Phone 46 0 13 35 59 00 Fax 46 0 13 35 59 01 www inficon com E mail reach sweden inficon com
27. e Test MOQG o5ii descarta E nity Rer tage ork PR tecta drea 8 4 Calibration 8 5 Detection Mode Settings 8 6 Analysis mode NAE A GRECI A m 10 11 12 13 14 8 8 Display Settings 8 9 General settings 8 10 Service Settings 8 1 Combined MOde ire Een E repas Seele I benta betedde o PA sire oT RR ERREUR T T UT 8 13 Probe Control Port 8 14 Printer port 8 15 Sensistor 5 H2000P iristallatiORi 2 2 tint tette ora Et bete einsenden eu ia acad 8 16 Default parameters Trouble shooting Sensistor ISH2000 specifications Spare parts and accessories coit rte none 45 S pport by INFICON m 46 12 1 How To ContactINFIC ON ocurre rtc en DE HANS stage Fede ate quero Ba 46 12 2 Returning you instrument to INFICON sssssessene eene 46 Declaration Of conformity itte ro pede ezine Fai ete En uberi vire teo TREE 47 ia CHING MEER TRO T m 48 OP Sensistor ISH2000 EN 201203 1 Hydrogen leak detector Sensistor ISH2000 Operating Instructions EN Welcome to Sensistor ISH2000 Dear customer You have just bought an INFICON Hydrogen Leak Detector Sensistor ISH2000 The Sensistor ISH2000 is an extremely sensitive and selective detector for hydrogen gas H It is especially designed for leak detection using Hydrogen
28. e 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 Check that the probe cable is properly quickly connected to the probe and the instrument If the fault persists replace the probe cable Error Error in Active Probe See Probe Manual Check Sensor Voltage Error Check that the sensor is properly connected to the probe If the fault persists replace the sensor Check Sensor Temp Check that the sensor is properly connected to the probe If the fault persists replace the sensor OP Sensistor ISH2000 EN 201 203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 10 Sensistor ISH2000 specifications Table 10 1 Power supply specifications AC mains voltage Sensistor Sensistor Sensistor ISH2000 ISH2000C ISH2000P 100 240 V 50 100 240 V 60Hz 50 60 Hz AC mains current Typically 1 A 2 A pulse at power on Typically 300 mA Fuse 2 A slow 250 VAC Nominal battery voltage 16 1 VDC Operating time h without screen saver at 20 C Charging time 6 5h Power supply 24 VDC voltage Power supply 3 A max cur
29. e 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 0 5 2000 ppm H gt giving linearity between 0 5 and 500 ppm To obtain greatest accuracy over this range follow the calibration recommendation See Calibrate the leak detector on page 17 CAUTION A Do not open detector Service of this equipment may only be carried out by ser vice 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 When the instrument is put into operatio
30. eak detector Sensistor ISH2000 Operating Instructions Measurements EN e Panel cut out 262 x 127 mm 5 x 10 3 inches raS e Maximum panel thickness 8 mm 0 3 inch e Allow an extra 20 mm 0 8 inch on left and right side for mounting brackets e Depth of open space in panel is at least 15 cm 6 inches for Sensistor ISH2000 to fit Installation process Table 8 13 Install the detector as follows Step Action 1 Cut hole in panel according to figure above and remove burrs 2 Check that rubber o ring is in correct position in the grove around the edge of the detector 3 Put the detector in place in the panel hole 4 Hold the panel in place while fixing the mounting brackets to the detector See Figure 8 7 5 Align the detector horizontally and lock it by tightening the 4 set screws 6 Lock the set screws with the locking nuts V Connect ground terminal to protective ground of cabinet Fig 8 7 Fixing the mounting brackets Sensistor ISH2000 photo of bracke Bracket to panel screw Bracket to unit Bracket See Sensistor ISH2000 specifications on page 43 for electrical connections OP Sensistor ISH2000 EN 201203 39 8 16 Default parameters Table 8 14 Range and default settings of all Sensistor ISH2000 parameters 40 Hydrogen leak detector Sensistor ISH2000 Operating Instructions
31. ed by audio and LED signals Reject on APC bus high 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 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 A A O a 6 and Space is not supported The string will be shortened after the first space found Multipoint Analysis Summing up of the analysis result A fixed or moving number of measurements with a maximum 25 measurement points can be chosen The instrument must be in Analysis Mode or Combined Mode for this function to be active Toggle the Mode function for hand probe however APC is inactivated with Multipoint Analysis To use Multipoint Analysis If a fixed number of measurement points is used then measure according to the following steps 1 Push the probe button to begin the first measurement 2 Place the probe on the measurement place during the time the staple moves The instrument registers the
32. ence Unit Several choices PPM Reference Value 00E 37 1 00E 37 10 Reject Indication ON OFF OFF OFF Reject Level 1 00E 37 1 00E37 1 00E 01 10 Screen Save Timeout 1 60 min 20 min Sensitivity 15 8 Show Reject Level ON OFF ON Trigg Level 42 Menu Mode Several choices Combined Mode The Hand Probe P50 driver handles all passive hand probes That is probes not requiring any specific I O control such as valves etc OP Sensistor ISH2000 EN 201203 41 Hydrogen leak detector Sensistor ISH2000 Operating Instructions EN 9 Trouble shooting 42 In case of trouble using the Sensistor ISH2000 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 46 WARNING Opening or dismantling a Sensistor ISH2000 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 No sound in Detection Mode and Press the button repeatedly Analysis Mode No picture on display no sound Check the fuse No picture but only sound when Display setting may be wrong Watch exposed to gas th
33. ensistor ISH2000 Description Detector unit Brackets not shown 2 3 Screws not shown 4 O rings seal not shown User manual not shown 6 User manual CD not shown 7 Product return form not shown OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 3 Controls and connections EN The controls and connections are discussed and shown in this chapter Fig 3 1 Sensistor ISH2000 controls and indicators E INFICON ISensistor ISH2000 Description Display 2 Loudspeaker 3 Control push buttons 4 Earphone socket 5 Probe connector 6 LEDs 3 1 Display The display shows e indicator bar in Detection Mode and the figures in Analysis Mode e seven main menus Their positions are indicated on a horizontal scale Change from one menu to another using the and buttons e main menus have submenus which are also indicated by horizontal scales and can be selected using the and buttons e scales for setting numeric values languages etc e messages Sensistor ISH2000C e A battery status indicator in the upper right corner 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 e Change from one menu item to another using the lt an
34. es the hydrogen concentration and calculates a corresponding leak rate in a step measurement Detection Mode gives no numbers It therefore needs no actual 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 15 in order to give correct figures 12 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 e Set up a reference leak which corresponds to the smallest leak you wish to detect e Put the probe close to the reference leak and note approximately what reaction you get no reaction small medium high full scale wi
35. gen leak detector Sensistor ISH2000 Operating Instructions EN 2 Description of equipment Sensistor ISH2000 can be purchased in one of three versions A desktop model Sensistor ISH2000 a battery operated model Sensistor ISH2000C and a panel mount model Sensistor ISH2000P 2 1 Sensistor ISH2000 Sensistor ISH2000 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 Fig 2 1 The desktop model consists of seven parts 4 INFICON Sensistor ISH2000 Description Detector unit 2 Hand Probe P50 shown or Active Probe with sensor Probe cable C21 Power cable the power cable is country specific and may differ User manual not shown User manual CD not shown 7 Product return form not shown 2 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 for example Hand Probe P50 can be used This is due to power management control 4 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions The ba
36. igh This can occur 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 and the CAL_CONF output will be set 18 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Sensor condition indicator EN 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 Calibration Expose to gas Reference Value 1 00E 01 PPM Gas detected 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 Expose to background Prepare the probe for calibration by holding it in hydrogen free background Detecting gas Gas signal is detected Normal operation gas exposure can be interrupted Repeat calibration Calibration w
37. ing Instructions 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 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 re quirements are fulfilled 1 The hydrogen from the reference leak or gas line must reach the sensor before end of calibration time 2 Thesensor must have time to reach its maximum signal before end of calibration time Setting Min Calibration Time too low will have the following effects e Calibration will fail if calibration time is set too low e Calibration might pass but be incorrect Setting a high Min Calibration Time will have the following effects e Calibration takes longer time than necessary e 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
38. ing the calibration procedure be within the concentration range of 5 PPM 400 PPM H5 7 5 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 concentration in your reference gas This can be found on the certificate of analysis 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 2 PPM OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 8 Reference section EN 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 controls and indicators To enter the menus press Menu button 4 Press lt and gt 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
39. is 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 2 Condition for leak detection To use the leak detector the test object must be filled and pressurized by tracer gas 95 N gt 5 H5 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 3 Leak detection modes The detector operates in three modes e The leak locating mode Detection Mode mainly used for detecting and locating leaks but not quantifying them e The hydrogen measurement mode Analysis Mode measures the concentration of hydrogen e The Combined Mode default mode which is a combination of Detection and Analysis mode The Detection Mode operates continuously while the Analysis Mode determin
40. 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 OP Sensistor ISH2000 EN 201203 13 Hydrogen leak detector Sensistor ISH2000 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 prob
41. ith 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 Data rate 1200 baud Data bits 8 Stop bits 1 Parity None Flow control None 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 Printed data The detector can print the following information Date and Time for Power on of detector Time of print Value of all gas signals above the Reject Level Test result Accept or Reject Value of signal Result of calibration OK or Calibration Not saved Date and Time Parameter settings Au BRWN 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 PRINT Table 8 6 Probe 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 ECO AP33
42. jor 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 22 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 actively adjusts itself to the background This is done automatically at start upand thereafter it slowly adapts itself to slow variations in the background concentration By adjusting slowly minutes it avoids mistaking an actual leak for an increased background and vice versa Therefore a sudden rise in OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions background concentration will be detected However if the concentration remains
43. l not receive anything e 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 a driver to be installed before they can be used Note Battery operated model Sensistor ISH2000 does not incorporate the APC feature For driver installation you will need the following e APC Driver software Delivered with the probe e File transfer cable Delivered with the probe e PC computer with Windows 95 or later 8 15 Sensistor ISH2000P installation 38 The panel mount model 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 Q 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 50 C Fig 8 6 Panel cut out dimensions Free space horisontally Free space vertically 127 mm 5 inches 262 mm 10 3 inches OP Sensistor ISH2000 EN 201203 Hydrogen l
44. le 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 probe AP29 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 PRINT See Connector pin configuration on page 33 A custom APC program setting the MEAS flag prints as AP55 AP29 ECO 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 Data rate 9600 baud Data bits 8 Stop bits 1 OP Sensistor ISH2000 EN 201203 35 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Setting Parity None Flow control None The data format for Detection data output contains of ten ASCII characters Nine characters show the value in engineering format See Engineering format on page 17 and one character shows linefeed LF The print time is 50Hz continuous streaming data Note Data rate is 25Hz when Sensistor ISH2000 is running in Service Display Mode RS232 serial communication 36 The most commonly used Sensistor ISH2000 functions can be star
45. me Set the time for each measurement 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 0 120 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 e Flashing screen e Chopped audio signal e 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 OP Sensistor ISH2000 EN 201203 25 Hydrogen leak detector Sensistor ISH2000 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 Adj
46. n the sensor withstands temporary exposure to hydrogen concentration up to 100 Avoid long exposures to high concentrations OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 7 Calibrate the leak detector EN 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 7 2 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 as using 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 rec
47. nalysis 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 OP Sensistor ISH2000 EN 201203 23 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 indicat
48. ning the safe use of the product See definitions below WARNING A 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 Q 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 E Notice indicates instructions that must be followed to avoid damage to the Sensistor ISH2000 or other equipment Note A Note is used to indicate information that is important for trouble free and optimal use of the Sensistor ISH2000 1 2 Document outline The document is devided in two main parts e Getting started e Reference section The Getting started part consists of step by step case examples explaining how to use the Sensistor ISH2000 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 OP Sensistor ISH2000 EN 201203 3 Hydro
49. nsfer cable Null Modem Cable For the pin configuration refer to Table 8 4 Table 8 4 Pin configuration of the printer port Comments 1 DCD Not used 2 RD Received data 3 TD Transmitted data 4 DTR Not used 5 SG Signal ground 6 DSR Not used 7 RTS Not used 8 CTS Not used 9 CE 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 1 1 CD RxD 2 2 IRxD o TxD 3 3 TxD 4 8 DTR4 4DTR 8 Q SG5 5 SG S9 2 DSR 6 6IDSR 2 RTS 7 7 RTS CTS 8 8 CTS R1 9 9 E 9 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 OP Sensistor ISH2000 EN 201203 33 34 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Printer 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 printer w
50. ommendations e Same or higher than the Reject Level but maximum 10 times higher e in one of the following ranges 5 to 400 ppm H2 1x10 5 to 4x10 3 cc s mbarl s defined for air 3 to 120 g a defined for R134a 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 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 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 referenece leak Then the display shows Detecting Gas and gives sound signals Save or repeat the calibration routine until you can save the OP Sensistor ISH2000 EN 201203 15 Hydrogen leak detector Sensistor ISH2000 Operating Instructions calibration If the calibration is not saved the instrument will revert to the previous value after one minute
51. os 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 self supporting However such mixtures cannot detonate WARNING A Hydrogen nitrogen mixtures containing approximately more than 15 hydrogen can detonate when mixed in certain proportions with air NOTICE Gl Never make your own mixtures Only use ready made 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 OP Sensistor ISH2000 EN 201203 11 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 5 Working principle 5 1 Gas Sensor Technology The Sensistor ISH2000 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 th
52. rect 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 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 e is not subjected to gas for a lengthy period or e 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 unreasonably h
53. rent Table 10 2 Input and output connections Input output Power input connector Sensistor ISH2000 AC input connector IES 320 Sensistor ISH2000C Charger input connector 2 1 x 5 5 mm std Positive centre Sensistor ISH2000P 4 pin Phoenix MC 1 5 5 81 Series Detachable screw terminal Probe control Status port 25 pin D sub female 25 pin D sub female 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 gt 12 0 VDC gt 12 0 VDC Input low lt 8 0 VDC lt 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 External clamp diodes recommended recommended Low state voltage Max 1 5 VDC Max 1 5 VDC Low state leakage Max 100 pA Max 100 HA current Short circuit Thermal and Thermal and protection electronic electronic OP Sensistor ISH2000 EN 201203 43 44 Input output Sensistor ISH2000 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Sensistor ISH2000C Sensistor ISH2000P Output high 22 24 VDC gt Supply voltage 2 5 VDC Output low lt 1 5 VDC lt 1 5 VDC Serial communication port connector 9 pol D sub male 9 pol D sub male 9 pol D sub male Serial communication port s
54. se gas signals The Detector Signal Level is set as 1 to 100 of the Reject Level Default is 2 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 See the web address under section Info 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 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
55. tandard RS232 RS232 RS232 Table 10 3 Miscellaneous specifications Protection IEC529 Sensistor ISH2000 IP64 front IP32 back Sensistor ISH2000C IP63 in carrying case Sensistor ISH2000P IP64 front IP32 back Net weight 3 9 kg 8 6 Ib 4 0 kg 8 8 Ib 4 9 kg 10 8 incl case probe and charger 1 8 kg 4 0 Ib Overall dimensions 275x 155x170 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 0 50 C 0 50 C 0 50 C temperature Environment 10 90 RH 10 90 RH 10 90 RH humidity Table 10 4 Gas sensing specification In Detection Mode Selected unit mbarl s air using 5 H5 9596 N gt as Tracer Gas g a R143a using 5 H5 9596 N as Tracer Gas Sensitivity 1x 107 mbarl s 0 02 g a Table 10 5 Gas sensing specification In Analysis Mode Selected unit Sensitivity Measurement range Linearity Repeatability ppm H2 0 5 ppm 0 5 2000 ppm 0 296 Typ 1596 of reading Typ 1096 of within 0 1 10 x reading 4 0 3 ppm calibration point in range 0 5 100 ppm mbarl s air 5x 107 mbarl s 5x 107 4x 10 mbarl s Typ 15 of reading Typ 10 of using 5 H3 within 0 1 10 x reading 3 x 107 95 N as calibration point in mbarl s Tracer Gas range 1 x 10 2x 10 3 mbarl s g aR143a using 5 H2
56. tection 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 in Analysis and Detection mode Parameter Header Reject Level A n nnE nn Correlation Value B n nnE nn Analysis Unit Cc Text string max 12 characters Analysis Unit CUx x 1 to 8 1 PPM 2 CC S up to 8 Timer A D nnn Timer B E nnn Timer C F nnn Timer D G nnn Purge Level H n nnE nn Reference Value I n nnE nn Reference Unit J Text string max 12 characters Reference Unit Program settings JUx x 1 to 8 1 PPM 2 CC S entered as integer in 10 s of seconds 1 0 1s 100 10s 60000 6000s 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 OP Sensistor ISH2000 EN 201203 37 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Parameters can be sent in any order you like e If your data was received and correct Sensistor ISH2000 immediately echoes sends back the data e If you send a non existing header you wil
57. ted configured over the RS232 interface Table 8 10 RS232 communication specifications Setting No Printer PC Printer Data rate 115200 baud 1200 baud 9600 baud Data bits 8 8 8 Stop bits 1 1 1 Parity None None None Flow control None None None RS232 interface commands Table 8 11 Common used functions Command Header Calibrate K Measure M Print Request N Stop Measurement Q Hand Probe R Active Probe Installed AP S Analysis Mode X Detection Mode Z Combined Mode Y 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 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions 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 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 De
58. thin the first few seconds e 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 accordance with the instructions see Calibrate the leak detector on page 15 The reason for this is that the alarm is based on the Analysis Mode 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 Sensitivity on page 25 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
59. tle 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 A 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 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 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 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 to gas When a mixture of more than 5 5 hydrogen in nitrogen is released into air there is a region of rati
60. ttery a Li ion battery at 14 8 V can not support the current required to operate external probes On the display in Detection and Analysis Mode a symbol in the upper right corner shows the battery charge status Sensistor ISH2000C will operate for 14 hours on a fully charged battery with screensaver and mute function And 9 hours without screensaver and mute function One hour charging will give about one hour of operating time This can be done when necessary but it is important to regularly fully charge the battery Fig 2 2 The battery operated model consists of seven parts Description Detector unit Hand Probe P50 shown or P50 Flex Probe cable C21 Battery charger the battery charger are country specific and may differ not shown User manual not shown User manual CD not shown 7 Product return form not shown 2 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 the 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 See Sensistor ISH2000P installation on page 38 OP Sensistor ISH2000 EN 201203 Hydrogen leak detector Sensistor ISH2000 Operating Instructions Fig 2 3 The panel mount model consists of seven parts 1 inricon TS
61. ustable 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 Reset Signal Reset the sensor level in Analysis mode and Detection mode 8 8 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 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

Operating Instructions Hydrogen Leak Detector Sensistor

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