Gas-Tec User manual
Contents
1. Please note that the zero will not take effect if the background gas reading exceeds 30ppm parts per million 11 The pump will be heard continuously while the unit is in use gt Auto Zero Auto Zero Place Probe In Clean Air CROWCON 13 Gas Detection You Can Trust Operation Gas Tec 3 3 Detecting gas Al 14 Gas Tec continuously records data relating the gas reading to a log which is Now the Gas Tec is ready for use Place the probe towards the suspected leak or to the survey area and view the display for read out information Alternatively attach the Gas Tec to a Trigger survey unit to use it in a moving vehicle stored in the internal non volatile memory For further details see section VI The Gas Tec includes a GPS location monitor Make sure the antenna is not obstructed and monitor the GPS icon on the LCD display for lock information Depending on the coverage in the area it can take from 30 seconds to 8 minutes for the antenna to lock on to a sufficient number of satellites At this point the GPS icon at the top of the LCD display will register a lock see Sections VI 3 and VI 4 on p21 and 23 for further information Providing the GPS is locked on to satellites details of the instrument s loca tion will be written to the log SL AL ia If using the Gas Tec for invehicle surveys it is recommended that a lock is p achieved outside of the vehicle before installat2. 20 Vill Alternative probes 26 8 1 Alternative probes 26 8 2 Using Gas Tec in a moving vehicle 26 IX Specification 2r X Looking after Gas Tec 10 1 Gas cylinder 10 2 Filters 10 3 Probes and tubes 10 4 Rechargeable battery 10 5 Servicing XI Spares and accessories XII Hydrogen Safety Safe use of hydrogen cylinders 12 1 General guidelines 12 2 Using Hydrogen Gas Cylinders 12 3 Filling the hydrogen cylinder XIII Troubleshooting 13 1 Troubleshooting guide 13 2 Warnings list XIV Warranty 28 28 28 28 29 29 30 32 32 32 32 32 33 33 33 35 Standards information and hydrogen safety Standards information and hydrogen safety Before using the Gas Tec read and under stand the manual in full before use Make sure the alarm warnings listed in Section XII of the manual are fully understood Do not substitute components as this may impair the IP rating EMC performance and invalidate warranty Pay careful attention to warnings and instructions displayed on the instrument Observe site health and safety procedures for gases being monitored and be aware of evacuation procedures If this product is not working properly read the operating manual or contact your local authorised Crowcon service centre 1 1 Standards Changes or modifications not expressly approved by Crowcon could void the user s a
3. Backlight Timer Contrast Language 5 2 Setting time date and units Register when the survey is taking place Ensure the log entry timestamp is correct by using the Time and Date menu Choose to display these in a number of different ways Set Date DD MM YY 07 07 09 Similarly there are options for the units to be used when the unit displays pressure and for the unit of speed in the log entry Units Menu Speed Units Pressure Units Speed Units Press BACK to return to the Main Menu after storing appropriate settings The option to restore default values for each of the above will be offered after these settings are altered The default values are listed in Section IV Do You Want To Reset on p17 To Defaults gt CROWCON Gas Detection You Can Trust What the Gas Tec shows Gas Tec VI What the Gas Tec shows 6 1 Overview Gas Tec makes it easy to pinpoint gas leakages so that they can be dealt with quickly The data can be checked while recording is taking place or loaded down later To find information about the location of the Gas Tec at a particular time and other basic aspects of the system use the Info soft key at any time during operation A choice of screens is provided System and GPS A record of the concentration of hydrocarbon gases encountered by the probe as it is carried by the opera tor is stored in date stamped files in an internal memory Data is registered every
4. The person responsible for providing hydrogen cylinders should read Sections XII and X 1 of this manual gt CROWCON 9 Gas Detection You Can Trust Gas Tec Introduction Gas Tec 2 4 What Gas Tec detects Most users will be using Gas Tec to detect methane The instrument is also sensitive to other hydrocarbon gases such as propane If other hydrocarbon gases are present the Gas Tec reading will reflect their presence The Gas Tec s response to other gases differs from the reading shown for methane Correction factors for some common hydrocarbons are shown below Gas detected Divide reading by number shown to obtain actual concentration of gas Tetrahydrofuran 10 CROWCON Gas Detection You Can Trust Gas Tec Operation Ill Operation Prior to SWITCH ON 3 1 Getting ready Make these checks before start up e The battery of the Gas Tec should be charged indicated by the GREEN LED see Section X 4 p29 for more details e a probe must be connected with a filter inline gas pressure in the hydrogen cylinder must be greater than 150 psi see Section X 1 p28 for more details The Gas Tec will not work if the battery is not sufficiently charged or the pressure in the hydrogen cylinder is too low Using the LCD display these requirements can be checked once the machine has been switched on However there are a few steps to complete prior to this Attach the gas cylinder Set the hydrogen cylinder i
5. 44 0 1235 557749 Email sales crowcon com Web site www crowcon com Rotterdam Office Crowcon Detection Instruments Ltd Vlambloem 129 3068 G Rotterdam Netherlands Tel 31 10 421 1232 Fax 31 10 421 0542 Email eu crowcon com Web site www crowcon com USA Office Crowcon Detection Instruments Ltd 21 Kenton Lands Road Erlanger Kentucky 41018 1845 USA Tel 1 859 957 1039 or 1 800 527 6926 1 800 5 CROWCON Fax 1 859 957 1044 Email salesusa crowcon com Web site www crowcon com Singapore Office Crowcon Detection Instruments Ltd Block 194 Pandan Loop 06 20 Pantech Industrial Complex Singapore 128383 Tel 65 6745 2936 Fax 65 6745 0467 Email sales crowcon com sg Web site www crowcon com
6. number can be changed from 6 to any number between 1 and 12 16 CROWCON Gas Detection You Can Trust Gas Tec Function overview 4 2 Menu structure including range Main Screen Info System GPS Location Format Graphical Analogue Graph and analogue Display Backlight timer 30 seconds 1 minute 3 minute Disabled Time and n Set time Set date Set format Units Pressure units Speed Restore Defaults PSI MPH Bar KM H M S KTS Admin for detail see separate section Start Auto zero Mark Info Range 100 1000 10000 Display Volume GPS CROWCON 17 Gas Detection You Can Trust Set up Gas Tec V Set up To set the time and date or make some choices about how the data is displayed use the SetUp menu To do this switch the Gas Tec on and press the SETUP soft key 5 1 Choosing how to display the gas reading Press ENTER when the Format option is highlighted to choose how to see the data Format Menu Graphical Analogue Graph amp Analogue lt Graphical shows Analogue shows Press the button by BACK to return to the SETUP menu or allow this to happen automatically Format Menu Graphical Analogue Graph amp Analogue lt 18 CROWCON Gas Detection You Can Trust Gas Tec Set up Go into the DISPLAY menu to change the length of time the backlight stays on the screen contrast or the language that the LCD display strings will Display Menu be shown in
7. VII and XI DATA 1 mm 2 2 Flame lonisation Detection FID Flame lonization Detection FID is the fastest most sensitive and accurate way to detect concentrations of hydrocarbons such as methane butane or hexane The FID process uses a hydrogen flame to burn hydrocarbons in an air sample then counting the ions produced by the burnt sample The instrument then displays an accurate measurement of the concentration of hydrocarbons present in the sample All sam ples are destroyed as the measurements are generated This process takes place in a specially designed chamber 2 3 Hydrogen Safety Users of the Gas Tec will need to handle the hydrogen cylinder correctly A leak from a full cylinder could result in a build up of gas that could in extreme cases cause an explosion Install the cylinder carefully Section 111 1 p10 Check the cylinder is secured in place before opening the valve Tighten the cylinder as tightly as possible by hand The Gas Tec LCD display will prompt users through the startup and shut down procedures ensuring safe use Gas Tec will display relevant mes sages if the gas pressure is too low e to let the operator know if the gas pressure is too low e to prompt the operator to open the valve to allow gas to flow e to prompt the operator to close the valve during shut down e to let the operator know it is safe to power down the Gas Tec See the list of warnings in Section XIII for more details
8. down gas valve has been closed It is very important to close the valve completely If the valve is open hydrogen leaks into the enclosed space inside the instrument at 15 ml minute A build up of gas could cause an explosion in extreme cases CROWCON 15 Gas Detection You Can Trust Function overview Gas Tec IV Function overview This section provides an overview of what can be viewed and changed on the Gas Tec and where to find further information on how to control the instrument Start menu see Chapter III Graphical Analogue or Graphical and Analogue FID range 1000 ppm 100 ppm 10000 ppm Set up menu see Chapter V Te eran ee Date format DD MM YY DD MM YYYY MM DD YY MM DD YYYY Backlight timeout 1 min 3 min Disable mph miles per hour km h kilometres per hour m s metres per second Kts knots Admin menu see Chapter VII IMPORTANT NOTE Accepting the option RESET DEFAULTS on this menu may remove calibration and other settings DO NOT do this unless absolutely sure PIN number 1234 User choice which should be made and used only by senior engineer Service Date This figure is the number of months from the time and date entered at set up This figure is the number of months from the time and date entered at set up when the unit will go into service due If the Service Lock is on the unit will stop working If the Service Lock is off the spanner will show on the LCD display The
9. if the Gas Tec is to show addi tional concentrations only Offset Zero Please note that the zero will not take effect if the background gas reading exceeds 30ppm parts per million 1 6 Avoid contamination Do not use the equipment without a filter assembly installed Ensure foreign bodies and moisture do not enter the probe gt CROWCON Gas Detection You Can Trust Gas Tec Standards information and hydrogen safety 1 7 What s in the box 1 Gas Tec 5 e Probe handle case and fitted foam insert e Filter attachment e Angled coat hanger probe e Skids for coat hanger probe 2 Multiregional power supply 6 Spare filters 3 Manual 7 Strap 4 Quick Start Guide 8 Cylinder Cylinder not supplied in USA User manual BCROWCON Gas Detection You Can Trust gt CROWCON 5 Gas Detection You Can Trust Overview Gas Tec 1 8 Unit orientation Diagram 1 1 ON OFF button 2 Battery indication Light GREEN Power OK Light RED Power LOW Flashing GREEN Charging 3 GPS antenna 4 Strap loops 6 CROWCON Gas Detection You Can Trust Gas Tec Overview 12 Diagram 2 5 Headphone jack 6 Power supply DC jack 7 USB port 8 Trigger jack 9 Probe connector 10 Gas cylinder on off valve 11 Igniter 12 Gas cylinder gt CROWCON 7 Gas Detection You Can Trust Overview Gas Tec Control and monitor the Gas Tec with the LCD display Control the Gas Tec usin
10. second and is recorded against the time the record is logged The built in GPS if locked allows the position to be logged at the same time To upload the data plug the detector s USB connector into a PC the green led will light on the Gas Tec when connected Gas Tec will be recognised as a memory device and a folder will open displaying log files in date order The files can be manipulated or sent via e mail to interested parties The data collected by Gas Tec includes Column A An incremental number Column C Absolute Absolute PPM reading before autozero setting is deducted Column D Relative PPM reading after autozero is deducted Column E Latitude Latitude of current GPS Position Column G GPS height above sea level Column H SOG GPS Speed Over the Ground Column COG GPS Course Over the Ground angle measured clockwise from magnetic north Column J If the Mark button was pressed during readings In addition each report includes the serial number of the Gas Tec used for the survey Longitude Longitude of current GPS Position E A B C D E F G H i J 1 Serial Nu mber 0000XXXXXXXX 2 Software Version B01 05 3 Date 27 08 09 4 Speed Units MPH 5 6 7 Count Time Absolute Relative Latitude Longitude Height SOG COG Mark 8 9 111542 65530 5140 3410N 00118 3450W 57 3 1 46 266 4 10 111543 65530 5140 3410N 00118 3459W 57 5 2 18 279 92 11 111544 65530 5140 3412N 00118 3470W 57 9 2 63 294 88 111545 111546 111547 11
11. service centre 22 hrs 2 5 hrs 5 C to 55 C 23 F to 131 F 5 to 95 RH non condensing Via quick connect filtered coupling Headphone USB and Trigger sockets 5760 datalogs 5760 events Accurate to within 10 m with 5 satellite lock EN50270 amp EN50271 2002 FCC and CE This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Recommended every 6 months 12 months against faulty components or manufacture 27 Looking after Gas Tec Gas Tec X Looking after Gas Tec 10 1 Gas cylinder Start with a filled gas cylinder The gas pressure low prompt will show when the pressure is too low for the unit to function properly A full 400 ml gas cylinder 150 bar 2150 psi should last for approximately 60 hours The average hourly pressure drop is approximately 2 5 bar 35 psi Make sure the cylinder is turned off using the gas cylinder ON OFF valve after each use See also Section XII Hydrogen Safety p32 10 2 Filters The purpose of the filter assembly is to protect the flame chamber from contamination If water or solid particles enter the chamber it may cease to function properly The accuracy of readings may be affected The filter assembly consists of a filter backing disc a 25 mm diameter hydro
12. 1548 65530 5140 3416N 00118 3486W 58 9 2 71 320 01 65531 5140 3420N 00118 3500W 59 8 2 58 320 74 65530 5140 3426N 00118 3507W 60 2 2 86 332 8 65530 5140 3432N 00118 3513W 60 4 3 33 335 53 N you wen p oO 0 CO O OOOO 20 CROWCON Gas Detection You Can Trust Gas Tec What the Gas Tec shows 6 2 Special events in the record If during the survey with the detector an unusual event occurs and the MARK button has been pressed The flag will be visible in the far right hand column of the report GPS 5 124058 080709 05140 3432N 00118 351W YES 6 3 GPS Details of the status of the GPS can be accessed by pressing the INFO button shown above left and then GPS Read the details on the screen above right If GPS data has been recorded the data can be converted by web based applications and then displayed on a map Gas Tec thus provides a straightforward way to record and pinpoint gas leaks as well as moni toring survey progress and paths Google Earth DEX Fie Edit View Tools Add Help v Search Fly To Find Businesses Directions StiHelen Without Fly to e g 37 25 19 1 N 122 05 06 W a a Q Be 1 Oshippon Add Content 55 Sightseeing Tour Make sure 3D Buildings layer is checkec 113 Temporary Places E M school run created using GPS Visualizer EH ME tracks 5 A gt x i Ae BD SS gt to ue Nor ee A ye AGalihames View nd
13. Gas Tec User manual M07979 Issue 1 October 2009 CROWCON Gas Detection You Can Trust Contents Standards information and hydrogen safety o cc 4 1 1 Standards AA 4 L SEREN ad ee aia 4 1 3 Battery change 4 1 4 Charging 00 260 40er aden eas 4 hoe 4 o ee eo ee kei eee ee ree ee 4 1 6 Avoid contamination 4 1 7 What s in the box 5 1 8 Unit orientation 6 Control and monitor the Gas Tec with the LCD display zus saw twice an re 8 Il Gas Tec Introduction 9 2 1 Product description 9 2 2 Flame lonisation Detection FID 9 2 3 Hydrogen Safety 9 2 4 What Gas Tec detects 10 lll Operation 11 Prior to SWITCH ON 11 3 1 Getting ready 11 Oo Olan A 12 3 3 Detecting gas 14 3 4 Shutting down 15 IV Function overview 16 4 2 Menu structure including range 17 V Set up 18 5 1 Choosing how to display the gas co ra kun ar wale doe a End 18 5 2 Setting time and date 19 VI What the Gas Tec shows 20 6 1 Overview 2222 20 6 2 Special events in the record 21 6J OPS derer eee a a 21 6 4 Acquiring and using data from the ES To SEEN EEE 23 Vil Managing the Gas Tec 24 7 2 Set up the detector 24 7 3 Service Timer 25 74 Change PIN 25 7 5 Service functions
14. OK 5 Providing the gas supply is adequate the pump will start Please Wait 30 Seconds 12 CROWCON Gas Detection You Can Trust Gas Tec Operation 6 When prompted press the igniter the red cylindrical button If the pump does not start the Gas Supply Low message will display on the LCD display Check that the valve of the cylinder has been opened If not open it If it is open the gas pressure is not adequate Switch the unit off at the ON OFF switch and replace the cylinder After the pump starts hydrogen will begin to flow into the Gas Tec The LCD display will monitor progress as the gas builds up inside the chamber During this process a countdown timer will be visible When there is enough gas to begin operation an audible beep will sound under the Gas Tec Press it in until it clicks This should light the hydrogen and the beeping will stop If the beeping continues press the igniter again Press Igniter When the gas is lit the flame icon will stop flashing and the audible tone will end to signify that the unit is ready to detect gas 10 After a short warm up period up to 5 minutes the unit will offer the option to autozero Gas Tec offers the user 2 options to zero the unit every time it is switched on Zero in clean air to measure the presence of gas at any level Zero with a background level of gas present if the Gas Tec is to show additional concentrations only Offset Zero
15. Prepared for firing Wait for new messages Auto Zero Place Device prepared to set the zero Make sure that the device is in probe in clean Air PPM level clean air and or the background PPM level is less than 30 PPM Reading Marked The current record with GPS Information only VI x DATA is flagged in the logs VI x Reading Marked No The current record without Information only Recommended GPS Fix GPS DATA is flagged in the to achieve GPS lock first logs Do you want to stop The Stop button is pressed Confirm by pressing the Yes No Ill x readings User confirmation to stop button Enter Pin For Access User trying to access protected Enter a valid pin to continue VII X to admin menu settings PIN Wrong Invalid PIN entered Enter a valid PIN Time Not Saved Back button pressed on Set Press OK to change time or back V x time page button to cancel Date Not Saved Back button pressed on Set Press OK to change date or back V x date page button to cancel Saved OK button pressed The new values updated suc V x VIl x cessfully Enter New Admin Pin Request to enter new admin Enter a new PIN for admin menu pin CROWCON 29 Gas Detection You Can Trust Troubleshooting Gas Tec Powering Down The device is powering down Keep holding down the power X X button until the device counts down to zero and turns off Charging The device is charging Nothing Charge Complete Device charged completely Disconnect the char
16. ading Marked rather than black indicate MARKed readings in real time No GPS Fix den increase of hydrocarbon gas The rate of clicking will increase in proportion to the level of hydrocarbon detected Adjust the volume of the click using the VOL button This option can be accessed by pressing the INFO button as shown above Keep the Gas Tec upright The Gas Tec will not detect gas if the unit is tilted more than 30 degrees from the vertical If this happens an alarm will sound and a message will display Restore the Gas Tec to an upright position Gas detection will restart automatically the beep will stop and the message will clear If the Gas Tec falls sideways the flame may go out Check for this by inspecting the flame icon in the middle of the status bar at the top of the LCD display If the flame icon is flashing relight the flame by pressing the igniter see Section IIl 2 p11 3 4 Shutting down 1 2 3 4 Wait for ten minutes to allow the gas to dissipate Switch off the Gas Tec by holding down the ON OFF switch gt Before leaving or recharging the Gas Tec CHECK that the Press the STOP soft key see Using the soft keys p8 At the Stop reading message press the YES soft key VERY IMPORTANT When asked to Turn off gas do this by turning the valve on the gas bottle clockwise until tight for 3 seconds Count down on LCD display will show closing
17. despatch the equipment is proved to be defective by reason of faulty workmanship or material we undertake at our option either to repair or replace it free of charge subject to the conditions below Warranty Procedure To facilitate efficient processing of any claim contact our customer support team on 44 0 1235 557711 with the following information Your contact name phone number fax number and email address Description and quantity of goods being returned including any accessories Instrument serial number s Reason for return A Crowcon Returns Number CRN will be issued for identification and traceability purposes Instruments will not be accepted for warranty without a Crowcon Returns Number It is essential that the address label is securely attached to the outer packaging of the returned goods The guarantee will be rendered invalid if the instrument is found to have been altered modified disman tled or tampered with The warranty does not cover misuse or abuse of the unit Any warranty on batteries may be rendered invalid if the use of an unauthorized charger is proven Non rechargeable batteries are excluded from this warranty Warranties on sensors assume normal usage and will be rendered invalid if the sensors have been exposed to excessive concentrations of gas extended periods of exposure to gas or have been exposed to poisons that can damage the sensor such as those emitted by aerosol sprays Warran
18. e one file for each session of continuous use The file name con tains the date of the survey Drop the files to a folder on the PC Alternatively cut and paste them Delete the copied files from the internal drive of the Gas Tec to free up space for future sessions If the files on the folder occupy all of the available space the earliest log on the drive will be deleted auto matically and the new log file will be created The files are in csv format and can be manipulated by standard word processing applications CROWCON 23 Gas Detection You Can Trust Managing the Gas Tec Gas Tec Vil Managing the Gas Tec Earlier sections provided instructions for day to day use of the Gas Tec In this section we describe the use of functions intended to assist with the longterm management of the detector setting alerts for servic ing and finetuning other parameters of this flexible instrument 7 1 Admin menu Engineers may wish to set up the Gas Tec so that they report when a service falls due and possibly cease to work until servicing is undertaken Bear in mind that this function depends on the date and time set on the service menu see Section V 2 p19 The Gas Tec may report that the service has expired due to a failure of the backup battery for the internal clock These functions should be used with care and access to them protected by changing the default password To reach the administration functions of the Gas Tec switch the
19. g the soft buttons The buttons at the right are linked to the labels next to them on the screen Access a labelled option by pressing the button to the right of it A B C D Monitor the Gas Tec using the Status Bar A The battery icon shows how much charge the battery is holding The LED to the left of the icon shows green for Power OK red for Power Low and flashes green while the unit is charging The data icon shows the status of the storage medium The gas bottle icon shows the pressure level in the gas bottle Flame icon shows whether the gas is lit MO OW The GPS icon reads GPS lock if the antenna has locked on to available satellites until lock is achieved a question mark shows as above T If the Gas Tec needs servicing the spanner flashes G The number in the bulb indicates the strength of the backlight 8 CROWCON Gas Detection You Can Trust Gas Tec Gas Tec Introduction il Gas Tec Introduction 2 1 Product description Gas Tec is a portable gas detector for rapid survey and leak localisation GPS data and event logging allow survey teams to pinpoint and report on areas of significant interest Gas Tec senses hydrocarbons through the use of flame ionisation detection offering an extremely fast detection speed of less than 2 seconds Gas Tec is worn across the body and is supplied with a standard probe A wide range of other probes and accessories are available see Sections
20. ger from the X X unit Charging Error Error in charging device Restart the device and repeat the X x charging process Time Date Failure The Date Time on the device Contact manufacturer is lost Service Expired The device needs servicing Return to manufacturer Turn Off Gas The gas is not required Turn off the gas by turning off the Ill x knob on the cylinder Plug In Charger Charger is required to continue Plug in the charger and power on X 4 the charger Lost GPS Signal No GPS satellites in view Keep the device under open sky VI x to acquire GPS Signals Memory Card Almost The memory card is running low Back up the log files to PC and VI x Full on free space then delete the log files from the device Flame Failure The flame has failed Press the igniter again to lit the I X flame Battery Low The battery level is low Turn off the device and connect X 4 the charging unit to the device SYSTEM ERROR System has reported an error Restart the device If the error reappears consult manufacturer Contact your supplier System has reported an error Restart the device If the error for service repair reappears consult manufacturer Tilt Alarm The Device is tilted Hold the device upright with the IIl x display facing upwards 34 CROWCON Gas Detection You Can Trust Gas Tec Warranty XIV Warranty This equipment leaves our factory fully tested and calibrated If within the warranty period of one year from
21. handle The probes should be kept clean with any small holes unobstructed Pricking with a pin and reverse blowing should be adequate 10 4 Rechargeable battery Fully charged batteries should last approximately 22 hours At low temperatures the charge will not last as long The level of charge is displayed using the battery symbol on the LCD display and as a percentage on the System submenu under the Info menu see Section VI 1 p20 s a general guide each bar on the display will give five hours of operation The symbol will flash when the battery needs recharging Recharge the battery after each use of the Gas Tec so it will be ready for the next session While the unit is recharging the battery icon will show The display will report that the battery is charging The LED at the left of the LCD display will flash green When the unit is fully charged the message CHARGING COMPLETE will be displayed IMPORTANT a The batteries will slowly discharge if the charger is plugged into the instrument with the mains supply disconnected b If the instrument is left unused or in storage the batteries should be charged every month to keep them in good working order 10 5 Servicing Contact an authorised Crowcon service centre CROWCON S Gas Detection You Can Trust Spares and Accessories Gas Tec XI Spares and accessories 30 CROWCON Gas Detection You Can Trust Gas Tec Spares and Accessories M04120 Tubi
22. his to change the Service Date Service Lock and Error Override options Set Service Date Todays Date 07 07 09 Service Due Months Time Press ENTER again to use the first option shown to set the time to elapse before the unit is due to be sent for service When this has been chosen the screen will automatically jump back to the Service Timer menu Press BACK to go back to the ADMIN menu or press the down key to select other options as required Set the Service Lock to prevent the unit being used after the Service Date entered in the first step Choose the last option to allow an Error Override this allows the Gas Tec to restart attempting to clear any known failure modes If the Gas Tec still reports an error after running this option please contact your local authorised Crowcon service centre 7 4 Change PIN Use the soft key by the UP and DOWN arrows to select option to change the PIN if this is required see VII 2 p24 7 5 Service functions Instructions for updating firmware and calibrating the Gas Tec can be found in the Service Manual Admin Menu Structure Enter pin 1234 Service Timer Change pin Calibration GPS Restore Defaults Set Set Error Service Service override Timer Lock 7 6 Restore Defaults THINK CAREFULLY before using the Restore Defaults instruction here as vital data may be lost CROWCON 25 Gas Detection You Can Trust Alternative probes Gas Tec VIII Alternative probes An in
23. ion to the Trigger survey unit see Section VIII 2 takes place The Gas Tec in use The Gas Tec monitors the level of hydrocarbon in the sample The number on the screen shows the con centration of hydrocarbon gas in parts per million ppm to Display screen to Volume screen to GPS screen Press the Info button to bring up a choice offering opportunities to change options on the volume of the alarm signal and the nature of the display Pressing the DISP button will take you to the screen of the Format Menu shown in section V 2 p19 Choosing the GPS option will display GPS data such as lon gitude latitude and number of satellites locked onto The screen you will reach is illustrated in Section 6 2 p21 Users have the option of three display formats All offer ppm numerical readings with options for moving bar or cityscape and a screen showing all three Gas Tec offers a choice of three ranges 0 100 ppm 0 1000 ppm and 0 10 000 ppm The range chosen is indicated just above the graphical output See section V p18 for instructions on how to change between these options gt CROWCON Gas Detection You Can Trust Gas Tec Operation An audible click will sound if the Gas Tec measures a sud The MARK button can be pressed to record a significant event Pressing by MARK will assign a flag into the datalog for retrieval at a later stage Bars in the display that are clear Re
24. lator is attached be sure that the regulator adjusting screw is in the closed position before opening the cylinder valve When opening the valve turn the hand wheel slowly so that the hydrogen does not enter the regulator suddenly Never use a wrench hammer or other tool to open or close the hand wheel 12 3 Filling the hydrogen cylinder When filling hydrogen please follow all safety precautions that are supplied or use an approved specialist to do this Damaged or discarded cylinders should be treated as hazardous waste 32 CROWCON Gas Detection You Can Trust Gas Tec Troubleshooting XIII Troubleshooting 13 1 Troubleshooting guide Symptom Diagnosis Data card 95 Memory card almost full Back up log files and delete from card GPS reading Take outside and wait No card shown on LCD No card detected Check if memory card is inserted into the card slot 13 2 Warnings list Popup Message What this means What you need to do Where to find further info Where to find further info Please Wait Wait until next instructions Do not press any buttons and wait for any new messages Press Igniter Instruction to press ignitor Press the igniter Turn On Gas Supply Device needs Hydrogen gas to Turn on the Gas by opening the I X continue knob on the cylinder Gas Supply Low No Gas pressure is low or cylinder Check the bottle pressure and or IIl x Cylinder attached not attached replace the cylinder System Primed
25. n place by pushing the bottom into the toe of the Gas Tec below left Position it so that the cylinder and Gas Tec con nections line up Then attach the cylinder to the Gas Tec by screwing the nut until tight Secure cylinder Attach the probe To attach the probe push the coupling on the end of the probe assembly into the probe connector at the base of the Gas Tec It will click into place Attach probe To release push the silver release button on the side of the probe connector and pull gently Release probe CROWCON 11 Gas Detection You Can Trust Operation Gas Tec Attach the shoulder strap below Attach both ends of the strap to the metal rods at either end of the Gas Tec Using headphones Plug the headphones into the headphone jack at the base of the Gas Tec This will silence external alarms and notifications of gas detection leaving only the user to hear the increasing tones 3 2 Start Up When the hydrogen cylinder and the probe are properly attached the Gas Tec can be switched on 1 Press the ON OFF button The LCD display will run a self test and then be ready for use 2 Press START 3 The LCD display will show the message Turn on the gas supply if the cylinder is not already turned on 4 To open up the gas supply turn the gas cylinder ON OFF valve on the side of the hydrogen bottle anticlockwise Turn until there is no more resistance Gas Pressure
26. ng set comprises full kit for refit of 1 Gas Tec CROWCON 31 Gas Detection You Can Trust Hydrogen Safety Gas Tec XII Hydrogen Safety Safe use of hydrogen cylinders 12 1 General guidelines It is important to maintain a supply of full hydrogen cylinders if the Gas Tec is to be used regularly See Section IX to check how long the cylinders to be used will last Hydrogen is not a dangerous gas if released into the air in small quantities The biggest risk is that hydro gen will build up inside the equipment Beyond a certain pressure or rapidly released into air the gas could ignite This could cause an explosion 12 2 Using Hydrogen Gas Cylinders The following are some safehandling guidelines that have been established to help assure the safety of your hydrogen gas operations e Itis very important to secure all compressed gas cylinders in an upright position where that they can not be knocked over e Hydrogen gas cylinders should never be used if pressure has not been reduced by a suitable regu lator at the cylinder or at the outlet of the header valve of a cylinder manifold Use only regulators intended to be used with hydrogen and never force connections that do not readily fit together Never open a hydrogen cylinder valve to remove dust or dirt from fittings prior to attaching a regula tor While this practice may be acceptable for other gases with hydrogen there is a risk of selfigni tion Once the regu
27. phobic filter element an O ring and a 27 mm diameter paper pre filter element Assemble the filter using components in order as shown in the illustration below The paper pre filter should be inspected regularly and replaced when necessary This will protect the hydrophobic filter from coarse contamination and extend its life When fitting this filter the hydrophobic surface should be placed in contact the O ring The fibrous surface marked with a red dot should be placed face down against the backing disc If water enters the filter assembly the hydrophobic surface will prevent moisture entering the flame cham ber but before continuing to use the Gas Tec make sure the probe and pre filters are clear Discard the pre filter Shake or blow lightly on the hydrophobic surface Reassemble the unit with a new pre filter Dry and clean the probe and tube assemblies thoroughly before reusing NOTE Instruments should not be run without the filter assembly 10 3 Probes and tubes Check probes and tubes for damage before use The water trap cavity at the bottom of the insulated probe handle should be cleaned out with a clean rag or tissue do not use volatile solvents The joint should be opened periodically and any water shaken out Avoid water passing into the instrument 28 CROWCON Gas Detection You Can Trust Gas Tec Looking after Gas Tec Also clean the tapered joint by which the probe attachment is fixed to the
28. rated system formed when a Gas Tec is attached via quick release fasteners to a Telegan Trigger Survey unit The Trigger unit contains a sample boom pump fitted with monitoring electronics audible alarms and a Sample Boom Kit To order a Trigger Survey unit see the Spares and accessories section XI p30 26 CROWCON Gas Detection You Can Trust Gas Tec Specification IX Specification Description Sensor Gas Range Accuracy Response time H2 Cylinder Life Case Size Weight Ingress protection Audible alarm Visual alarm Backlight Battery type Battery life Recharge time Operating temperature range Humidity Sample input Outputs Data logging Event log GPS EMC amp approvals Industry approvals Calibration period Warranty gt CROWCON Gas Detection You Can Trust Hydrocarbon gas detector Flame lonisation Detection FID Calibrated to Methane CH Other correction factors available 0 100 ppm 0 1000 ppm 0 10 000 ppm 10 lt 2 seconds UK amp EU 400 ml 60 hrs EU 100 ml 15 hrs USA 300 ml 45 hrs High impact resistant UV resistant glass reinforced nylon 385 x 205 x 125 mm 15 2 x 8 x 5 inches 2 4 kg without cylinder IP54 Rising tick increasing with presence of gas Indication of status on LCD display Adjustable intensity and time off delay Rechargeable Lithium ion Users may not change the battery of this product it must be replaced at Crowcon or a
29. rticular field use the data NEW If you want to add altitude data to your KML file enable the option labeled Add SRTM elevation data General map parameters Output format G Total size of all File type 1 Enter name here File 1 7 Documents anc Browsed Google Earth doc name GasTec D File 2 Add SRTM elevation data No _ En u 7 File 3 Gone Track options 2 Browse for the Gastec log File 2 vH Or paste you Altitude mode Clamped to ground _ HER o MA 7 only works with absolute altitude E wie Draw a shadow No name desc latitude longitude Draw as waypoints N Track opacity 100 Line width Colorize by Track recommended M M Default color Magenta Mi Waypoint options Show waypoints In bounds of track plus padding y Force plain text to be this type default w Altitude mode Clamped to ground vu Default icon color _ hite v Default icon Small square Contact information Your e mail OPTIONAL This is for impromptu tech support NOT a mailing list Create KML file Open in new window Show additional file input boxes Reset the entire form Google Earth output Your GPS data has been processed Here s your KML or nol 4 Download this File N S 170 i If you ve already installed Google Earth clicking the above link should open the application If something q Ey
30. sulated probe handle including filter assembly is supplied for gas leak monitoring as standard 8 1 Alternative probes Two sampling systems are available 1 An insulated probe handle system for gas leak monitoring A variety of probe ends can be plugged into the insulated probe handle as follows e Standard coat hanger probe A with a perforated transverse end which is particularly useful for walking ground level surveys This probe is supplied as standard complete with two skids B which maintain a small clearance between the probe and the ground e Astraight probe C for pinpointing leaks from pipe fittings inside ducts or through ventilating bricks or other apertures or general atmospheric sampling e Acarpet probe D which can be wheeled along over a smooth surface collecting samples at ground level e Bell housing probe E for bore hole applications 2 Telescopic Probe with polytetrafluroethylene PTFE tubing for monitoring volume organic combusti bles The telescopic probe terminates with a straight length of 5 mm diameter stainless steel tubing to which a variety of probe ends can be fitted Straight probe extensions are available for collecting bore hole samples To order equipment not supplied as standard see the Spares and accessories Section XI p30 8 2 Using Gas Tec in a moving vehicle Mount the Gas Tec on a Trigger survey unit to operate from a moving vehicle The Trigger Survey System is an integ
31. ti Landsat colorized overlay to accompany your KML file or explore more overlay options A SAVE THIS map add wi rs GD everyTrail com Return to the Google Earth input form Bookmark this link to save your settings Click on the link to the converted file Google Earth will display your saved trace log 2 Google Earth File Edit View Tools Add Help v Search D O 32 OA SS B StiHelen Without FlyTo Find Businesses Directions Fly to e g 37 25 19 1 122 05 06 l MQ o gt hippon v Places Add Content Me My Places E Sightseeing Tour Make sure 3D Buildings layer is checked 1413 Temporary Places E M amp school run created using GPS Visualizer 6 MED Tracks t A y aS AN 3 5 Thames View Indu y vw Layers m amp Primary Database Mg Geographic Web OE Roads E 3D Buildings E Street View MP Borders and Labels O B Traffic aO Ye Weather Oy Gallery 22 8 Oe Ocean E 009 Global Awareness so F Places of Interest 5 OB More start Inbox Micr 2009 Getmapping pic otra Etd Bluesky By Google 2009 Tele Atlas s 7 Eye alt 3 07 km B 5590173 09 03 gt CROWCON Gas Detection You Can Trust Gas Tec What the Gas Tec shows 6 4 Acquiring and using data from the Gas Tec To save data to a PC connect the detector to a USB port A new window will open showing the log files stored on the internal drive There will b
32. ty Disclaimer Crowcon accept no liability for consequential or indirect loss or damage howsoever arising including any loss or damage arising out of the use of the instrument and all liability in respect of any third party is expressly excluded This warranty does not cover the accuracy of the calibration of the unit or the cosmetic finish of the prod uct The unit must be maintained in accordance with the Operating and Maintenance Instructions Our liability in respect of defective equipment shall be limited to the obligations set out in the guarantee and any extended warranty condition or statement express or implied statutory or otherwise as to the merchantable quality of our equipment or its fitness for any particular purpose is excluded except as pro hibited by statute This guarantee shall not affect a customer s statutory rights Crowcon reserves the right to apply a handling and carriage charge whereby units returned as faulty are found to require only normal calibration or servicing which the customer then declines to proceed with For warranty and technical support enquiries please contact Customer Support Tel 44 0 1235 557711 Fax 44 0 1235 557722 Email customersupport crowcon com CROWCON 35 Gas Detection You Can Trust A HALMA COMPANY UK Office Crowcon Detection Instruments Ltd 2 Blacklands Way Abingdon Business Park Abingdon Oxfordshire OX14 1DY United Kingdom Tel 44 0 1235 557700 Fax
33. u Abingdon 4 gt al v Layers a Primary Database E Me Geographic Web OE Roads fj 30 Buildings o Street View E P Borders and Labels o g Traffic amp Ox Weather E Flg Gallery E 1 ocean Imagel 2009 Getmapping pic pe S e 009 Global Awareness lol car Etd amp Bluesky L a pm Google EH O E Places of Interest A ENES F s f oO a OD more 2 51 39 49 96 N 117 14 273Wi elev Om Eye alt 3 07 km start E Out G oogl Google Earth cio 09 03 Above is shown an example of a route recorded on a Gas Tec It was made using Google Earth software To make a such a map from a csv file downloaded from a Gas Tec Google Earth software must be installed The software can be downloaded from http earth google co uk gt CROWCON 21 Gas Detection You Can Trust What the Gas Tec shows Gas Tec Use software available at http www gpsvisualizer com map input form googleearth To convert the data saved from the Gas Tec onto your PC Follow the instructions in the screenshot below to process the data and create a file that Google Earth can open and display Convert your GPS data for use in Google Earth This form will import your GPS data file or plain text data tab delimited or CSV and create a KML file that You might also be interested in the Google Maps input form which can create an interactive map that can b classic map form To resize and or colorize Google Earth markers based on a pa
34. unit on and the press the ADMIN soft key the third button down at the right hand side of the LCD display After entering the Admin menu the Gas Tec will not detect gas To use the Gas Tec turn it off using the on off button and then press again to turn it on On receipt of a new Gas Tec the administrator should set a new PIN see Section VII 2 below The menu can also be used to calibrate the Gas Tec This function is described in the Service Manual IMPORTANT NOTE Accepting the option RESET DEFAULTS on this menu may remove calibration and other settings Service Timer Change PIN Firmware Update Calibration GPS Restore Defaults 7 2 Set up the detector The screenshots show how to navigate through the menus The buttons at the right are linked to the labels next to them on the screen Access a labelled option by pressing the soft key to the right of it Change the numbers on the screen by using the buttons next to the up and down arrows on the right To move between the numbers use the NEXT and BACK soft keys To do this enter the default PIN of 1234 and choose the menu option Enter a new Admin PIN Ensure a record of the new PIN is kept as this will be needed during set up and servicing After entering the correct PIN a list of options will be displayed 24 CROWCON Gas Detection You Can Trust Gas Tec Managing the Gas Tec 7 3 Service Timer Press ENTER to get into the Service Timer menu Use t
35. uthority to operate the equipment and cause Safety implications FE CE 1 2 Safety WARNING GAS CYLINDER Before Gas Tec is turned off check the gas cylinder has been closed off by turning the valve clockwise to the OFF position After this is done the gas pressure regis tered will drop gradually If the valve is left open hydrogen will leak into the enclosed space inside the instru ment at 15 ml minute In extreme cases a build up could cause an explosion WARNING USE OF HYDROGEN As with any apparatus using hydrogen stored under high pressure certain precautions are prudent These mainly concern the handling and filling of the hydrogen cylinder and are dealt with in section XII In addition the detector uses a hydrogen flame and this point should be considered when the instrument is used in situations where the gas concentrations are likely to be dangerously high above 10 000 ppm 1 3 Battery change Users may not change the battery of this product it must be replaced at Crowcon or an approved service centre 1 4 Charging Use only the charger supplied with the Gas Tec or the vehicle charger listed in the accessories section The unit cannot be turned on while it is being charged 1 5 Zeroing Gas Tec offers the user 2 options to zero the unit every time it is switched on e Zero in clean air to measure the pres ence of gas at any level e Zero with a background level of gas present
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