GMI Oxygas 500, User Handbook Manual

Page 1: ...Oxygas P 500 User Handbook...

Page 2: ...06 13 Part Number 42645 GMI welcomes comments on all our publications Your comments can be of great value in helping us to improve our customer publications Please send any comments that you have to o...

Page 3: ...be operational differences between the latest product and this manual This Handbook is an important part of the Oxygas P 500 product Please note the following points It should be kept with the instrum...

Page 4: ...e sensor Where such environments are known or suspected it is recommended that more frequent response checks are carried out The chemical compounds that can cause loss of sensitivity include Silicones...

Page 5: ...iii DECLARATION OF CONFORMITY Refer to current Declaration of Conformity document Part No 42907 supplied with product...

Page 6: ...OXYGAS P 500 USER HANDBOOK iv...

Page 7: ...v REVISION RECORD Date Issue Description Of Change 29 07 04 1 New Handbook 11 06 13 2 Revised to include effect of CN 6257...

Page 8: ...OXYGAS P 500 USER HANDBOOK vi...

Page 9: ...RE i DISPOSALADVICE i SAFETY ii AREAS OF USE ii STORAGE HANDLINGANDTRANSIT ii DECLARATION OF CONFORMITY iii REVISION RECORD v INTRODUCTION 1 Overview 2 Combustible Gas Indicator Leak Detection 2 Purgi...

Page 10: ...16 Filters 17 Liquid Crystal Display LCD 17 Before Use Checks 17 OPERATINGINSTRUCTIONS 19 Modes of Operation 19 Switching On 20 Calibration Date Features 21 Switching Off the Instrument Pump 21 Switch...

Page 11: ...the Battery Pack 30 Replacing Alkaline LR20 Dry Cell Batteries 30 Filter Replacement 32 33 CALIBRATION 35 Calibration Validity 35 ACCESSORIES 37 ADDITIONALINFORMATION 41 Training 41 World Wide Web 41...

Page 12: ...e Ranges in FCM B 3 Entering FCM B 3 Zeroing the Instrument B 4 Field Calibration Procedure B 5 Quitting FCM B 9 Quit And Save Changes B 9 Quit Without Saving Changes B 9 OPERATINGINSTRUCTIONS C 1 Eng...

Page 13: ...osive Level Volume flammable gas and Oxygen for CGI leak detection and purge operations The instrument is designed to the latest standards and is certified for use in Hazardous Areas The Oxygas P 500...

Page 14: ...s operating instruction in the application of finding leaks monitoring atmospheres or practical purging operations In all cases you should follow your company and application specific training Combust...

Page 15: ...sphere is safe The minimum amount of fuel in air that can cause an explosion is called the Lower Explosive or Flammable Limit LEL LFL If the mixture has too much fuel and hence insufficient air then a...

Page 16: ...ts such as gas with air creating potentially flammable mixtures It may not be possible to ensure that all sources of ignition are removed hence there is a need to avoid the formation of flammable mixt...

Page 17: ...flammable gas into the pipe in a controlled way to avoid large flammable mixtures being created and to avoid air being introduced into the network This is done by avoiding air and fuel mixing by intr...

Page 18: ...h Natural Gas The Oxygas is zeroed in air and would be switched on in the purge mode In commissioning the pipe would typically be purged to 95 Natural Gas This would be a normal operation however in i...

Page 19: ...e The pipe is being pressurised from atmospheric hence by inference the pressure will change The 02 cell can be pressure transient sensitive so care should be taken to ensure that the pressure is main...

Page 20: ...ct purging to air the instrument in the measure mode will start off in Gas and reduce the reading in the gas range until it autoranges back to LEL at around 4 5 CH4 in air or 99 LEL In the measure mod...

Page 21: ...t operations the instrument must be used in the purge mode In decommissioning the pipe the end point is the of Gas left in the pipe when it has mainly been displaced by Nitrogen A typical figure for t...

Page 22: ...es a negative reading of around 5 when compared with an air zero and obviously the 20 O2 reading drops to O in 100 N2 To enable the influence of the Nitrogen to be seen and compensated for in this con...

Page 23: ...ave provided in the following pages is the standard default of how the instrument would generally be configured with the possible options detailed in italic text GMI recommend that you take the time t...

Page 24: ...OXYGAS P 500 USER HANDBOOK 12...

Page 25: ...Air The instrument range is displayed in the top right corner of the display as LEL From 0 to 10 LEL the digital display resolves to 0 1 LEL From 10 to 100 LEL the digital display resolves to 1 LEL Th...

Page 26: ...ner of the LCD as GAS The digital display resolves the signal to 1 GAS with the analogue bar graph following in steps of 4 Figure 2 2 shows the Volume Gas display The detection principle for the Volum...

Page 27: ...e sensors greatly enhanced compared to the LEL range Digital signal correction techniques are used to minimise drift The ppm range includes a manual zeroing procedure Construction The instrument is ho...

Page 28: ...tinue to be used until it switches off automatically Rechargeable Battery Pack The GMI rechargeable battery pack provides approximately nine hours operational life from fully charged at ambient temper...

Page 29: ...LCD The LCD shows the current gas readings in both analogue and digital form together with operational and status information The display is protected by a toughened glass cover Backlighting is provid...

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Page 31: ...the instrument ON with either Button One or Button Two See Figure 3 1 below OXYGAS P 500 ON OFF PUMP ON OFF ZERO INST RANGE PURGE PPM CGI ON Figure 3 1 Instrument Front Plate Mode 1 CGI Switching ON w...

Page 32: ...Switching On Press and hold Button One to turn the instrument on This initiates the instruments warm up cycle and switches on the pump Figure 3 2 displays the warm up cycle for the Oxygas P 500 V SAMP...

Page 33: ...The re calibration interval pre set for all Oxygas P 500 instruments is twelve 12 months This period can be altered as an option however you should ensure that the instrument is always within its cali...

Page 34: ...nges only When in purge mode the PURGE flag is activated on the display as shown in Figure 3 4 Alternate flash Figure 3 4 Purge Mode Changing Range Each single press of Button Two changes the gas rang...

Page 35: ...point Figure 3 5 Zeroing Range Switching Off A double press of Button One turns the instrument off immediately The instrument switches off automatically after 30 minutes OFF is shown in the top right...

Page 36: ...rious messages can appear on the LCD screen to indicate instrument status SAMPLE This indicates that the pump is running and the instrument is sampling OFF This indicates that the instrument is about...

Page 37: ...re will be approximately 60 minutes operation left in a set of alkaline batteries although this figure will vary depending on battery manufacturer temperature conditions usage etc With rechargeable ba...

Page 38: ...OXYGAS P 500 USER HANDBOOK 26...

Page 39: ...attery chargers are available from GMI a Standard Charger a Flatbed Charger and a Smart Charger Standard Charger The GMI Standard Charger takes approximately 14 hours to charge a flat battery Note The...

Page 40: ...14 hours to charge a flat battery The Mode Select Switch can then be set to STAND BY where a trickle charge will maintain the battery in a fully charged state of readiness Note The 4 button instrument...

Page 41: ...should be fully discharged and charged on a regular basis of at least every three months The Smart Charger has the option of switching to discharge and fast charge cycle to provide this facility Note...

Page 42: ...s once every three months This can be done by running the instrument continuously or using the battery conditioning facility on the Smart Charger The batteries can be charged on the instrument but the...

Page 43: ...s Caution Under no circumstances should rechargeable batteries be fitted in place of Alkaline batteries 5 Insert four new batteries observing correct polarity indication in battery compartment base 6...

Page 44: ...suitable filters installed If a blockage occurs the SAMPLE FAULT indicator is displayed Check the sample line and probe handle for blockage Press Button One to clear the SAMPLE FAULT message Replace...

Page 45: ...he hydrophobic filter 4 Clean the probe handle to make sure that it is free from dirt and water 5 Fit a new cotton particulate filter 6 Fit the hydrophobic filter The yellow label on the f i l ter fit...

Page 46: ...OXYGAS P 500 USER HANDBOOK 34...

Page 47: ...the user Under normal operating conditions a 12 month period can be expected This is no guarantee however as the precise application of the product is unknown to GMI Individual codes of practice may d...

Page 48: ...OXYGAS P 500 USER HANDBOOK 36...

Page 49: ...5 metres 4ft 10ins approx 12480 Plastic Probe Solid End 35cm 1ft 2ins approx 12481 Probe Handle c w Filters 10077 Cotton Particulate Filters Box of 10 x 2 12688 Sample Line Adaptor 42645 User Handbook...

Page 50: ...Power Supply USA Plug 12241 220V Power Supply Australian Plug 13100 Smart Charger with Datalogging Software c w 240V Power Supply UK Plug 13440 Smart Charger with Datalogging Software c w 220V Power...

Page 51: ...Probe Shroud c w Skids use with 13565 12365 In Line Hydrophobic Filter Holder 42141 Gasurveyor 500 Standard Accessory Pack Consisting of Gasurveyor 500 Carrying Case Standard Probe Probe Handle Assem...

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Page 53: ...raining Training courses are available on all our products Contact our Marketing Department for further details Tel 44 0 141 812 3211 Fax 44 0 141 812 7820 e mail sales gmiuk com World Wide Web Visit...

Page 54: ...OXYGAS P 500 USER HANDBOOK 42...

Page 55: ...0 5 10 to 100 1 N A 2 1 LEL Volume 0 to 100 1 2 1 1 Gas Gas Oxygen 0 to 21 0 1 0 5 0 5 3 reading 21 to 25 1 N A 0 5 3 reading Notes All the values above are at normal temperature and pressure Humidity...

Page 56: ...alogue display scaled 0 10 0 100 0 1000 or 0 10000 4 digit digital display 3 character range indication Operational flags Sampling System Integral pump with flow fail sensor Nominal flow rate is 0 5 t...

Page 57: ...A 3 Power Source 4 D size alkaline cells providing approximately 15 hours runtime at 20 o C 68 o F Rechargeble NiCd battery pack providing approximately 9 hours runtime at 20 o C 68 o F...

Page 58: ...OXYGAS P 500 USER HANDBOOK A 4...

Page 59: ...hould be noted The gas should be of known traceable quality and have total analysis The gas should be applied in the same manner as the instrument is used e g at a known pressure which is constant and...

Page 60: ...re B 1 Button Functions To simplify button operation when calibrating the instrument an overlay card shown in Figure B 2 is available and can be placed over the top face of the instrument to identify...

Page 61: ...displayed in the LCD and before the instrument actually switches off enter the access code Note Allow at least one second between button presses when entering the button sequence The default factory s...

Page 62: ...Button 2 Figure B 4 CAL Mode Button Functions Zeroing the Instrument 1 Enter FCM See the previous section ENTERING FCM 2 Double press Button Two to zero current gas range 3 Single press Button Two to...

Page 63: ...ge selected is compatible with the calibration gas Note A single press of Button One toggles the pump Off On 3 Remove the cap from calibration gas cylinder Make sure that the regulator valve is in the...

Page 64: ...decrease The correct flow rate is achieved when the ball in the indicator tube floats just above its resting position 6 Wait for the instrument gas reading to settle 7 If the displayed reading corresp...

Page 65: ...utton Two will produce small decremental changes to decrease display reading until the displayed gas value corresponds to the concentration of the calibration gas 8b When required reading has been rea...

Page 66: ...from instrument inlet and turn regulator valve on calibration gas cylinder in a clockwise direction to turn off gas flow 11 Make sure that the regulator valve is in the fully closed position Off then...

Page 67: ...saved and followed by CAL mode exit the new CAL DUE date will be set to 12 months from now This can be altered to a different frequency via the set up program e g 6 months from now Contact GMI for det...

Page 68: ...OXYGAS P 500 USER HANDBOOK B 10...

Page 69: ...C 1 C OPERATING INSTRUCTIONS The following instructions provide the user with a quick guide to the operation of the Oxygas P 500 instrument...

Page 70: ...and must not be opened in the presence of a flammable atmosphere Oxygas P 500 instruments are certified as EEx iad IIC T4 20o C Tamb 50o C BAS01ATEX2292 II 2 G UL Class 1 Groups A B C and D This equip...

Page 71: ...ld then be pressed to restart the pump CHECK ZERO Indication that there may have been a zero shift due to the presence of gas Switch off the instrument and switch on again in fresh air ZERO FAULT Indi...

Page 72: ...One to switch instrument and pump On This initiates the instrument s warm up cycle Switch ON Purge Mode All LCD segments are displayed All LCD segments display is followed by Instrument Type and Softw...

Page 73: ...One when the pump is running turns the pump off and stops sampling A further press of Button One turns the pump back on Changing Range Each single press of Button Two changes the gas range The displa...

Page 74: ...C 6 GAS MEASUREMENT INSTRUMENTS LTD...

Page 75: ...B 1 Calibration Date Features 21 Calibration Procedure B 5 CALIBRATION VALIDITY 33 Calibration Validity 35 CGI 19 Changing Range 22 Charger Flatbed 28 Charger Smart 28 Charger Standard 27 CHECK ZERO 2...

Page 76: ...h x G GENERALINFORMATION 13 H HANDLING ii Humidity A 2 I Indirect Purging 9 INFORMATION ADDITIONAL 41 INSTRUCTIONS OPERATING C 1 INTRODUCTION 1 Issue 1 2 L LCD 17 A 2 LEL 13 LIABILITY i Liquid Crystal...

Page 77: ...27 Recharging the Battery Pack 30 Replacement Filter 32 Replacing Alkaline LR20 Dry Cell Batteries 30 Replacing the Battery Pack 29 Resolution A 1 Response Time O2 A 2 REVISION RECORD v S SAFETY ii SA...

Page 78: ...HANDBOOK IV T Time Response A 2 Training 41 TRANSIT ii V Validity Calibration 35 Volume Gas 14 W Weight A 2 World Wide Web 41 Z Zero A 1 ZERO CHECK 25 ZERO FAULT 25 Zeroing the Instrument B 4 Zeroing...

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Page 80: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...