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Helpful hints for using your new
GFM400 Series Gas Analyser

Thank you for purchasing the GF400 Series Gas Analyser. The GFM has been designed for use on site and
in harsh conditions and should give years of trouble free use if the following advice is followed:

♦

Allow time for the GFM instrument to stabilize for 10 minutes after switch on before completing any
calibration functions or zero functions.

♦

Use the AUTO ZERO function no more than twice a day.

♦

Replace internal and external filters regularly see Maintenance Section page 18 for more information.

♦

Ensure instrument is fully charged before use.

Part Number

Product Description

Water Filters & Sample Tubes

GFMFilt

Replacement water filter. Supplied in pack of 10

GFMQRC

Quick release male connectors for sample tubes. Supplied in pack of
10.

GFMTUBE

Spare sample tube

GFMChar

12 v in car charger

GFMBatt

Replaceable battery packs

GFMTEMP

Brass temperature probe for GFM400 Series

GFMTEMP T

T piece temperature probe for GFM400 Series

GFMCAL

103 litre gas canister containing 5% CH4, 5% CO2 and 6 % O2 for
checking calibration of GFM instruments

GFMREG

Brass regulator, flow indicator and connection tubing to connect check
gas to GFM instrument

GFMOXY

Replacement oxygen cell for GFM400 Series instruments

Содержание GFM400 Series

Страница 1: ...GAS DATA Monitoring the Environment GFM400 Series Gas Analyser User Manual...

Страница 2: ...GFM400 Series User Manual User guide to the operation of the GFM400 series of portable environmental monitors Issue Description July 2006 GFM400 Series GFM400 Series User Manual...

Страница 3: ...information Ensure instrument is fully charged before use i Part Number B Product Description B Water Filters Sample Tubes GFMFilt B Replacement water filter Supplied in pack of 10 J GFMQRC Quick rel...

Страница 4: ...in flammable atmospheres 27 Connections 7 Testing and certification 28 Gas measurement 7 Schiltknect Vane Anemometer 29 Connecting the gas pipe 7 Operating Instructions 29 Gas pressure measurement 8 I...

Страница 5: ...riety of external sensors can be plugged in e g vane anemometer to measure gas velocity or a temperature probe for ambient and other temperatures The GFM400 Series has rechargeable Nickel Metal Hydrid...

Страница 6: ...a red CO2 analysis 0 100 Electrochemical O2 analysis 0 25 Atmospheric pressure 800 to 1200 mbar User spec d gas channels Static Gauge Pressure 400 mbar Vane anemometer input 0 07 40 0 m s Temperature...

Страница 7: ...be observed Safe practice BEFORE entering a known hazardous zone switch on the instrument and make sure the display is visible BEFORE entering a known hazardous zone check that the keys respond BEFOR...

Страница 8: ...ot operate the unit if it is damaged in any way i e loose front panel missing screws etc Do not connect or remove plugs from the battery charger socket in the hazardous area Only charge the batteries...

Страница 9: ...e or takes a sample in other modes 5 4 Up This key scrolls up the gas channel and summary screens 5 Previous This key moves the instrument to the previous channel group 6 Next This key cycles the inst...

Страница 10: ...G F M 4 0 0 S E R I E S U S E R M A N U A L Navigating the instrument screens GFM410 GFM400 Series 6 GFM400 Series User Manual...

Страница 11: ...ecting the gas pipe Connect the flexible plastic gas pipe to the Gas In port on the top of the GFM400 or GFM410 instrument The port will automatically lock the pipe in place preventing it from being p...

Страница 12: ...switch to Channel Group 2 Pressure The display screen will change to show the last retained gas pressure reading indicated by the highlight around the pressure figure Now press the start sample key Th...

Страница 13: ...er should be in line with the pipe NOT at right angles to it When the anemometer is as far into the gland as possible without opening the tap re check the orientation and open the gas tap Finally push...

Страница 14: ...he opening screen Auto Turn Off To help conserve battery life the GFM400 Series features an auto power off facility This ensures that the instrument will switch itself off after 10 minutes if no keys...

Страница 15: ...y changes its function according to which screen is displayed It either switches the instrument to Calibrate mode turns on the sample pump in the gas measurement mode or takes a pressure sample in oth...

Страница 16: ...G F M 4 0 0 S E R I E S U S E R M A N U A L Navigating the instrument screens GFM430 GFM400 Series 12 GFM400 Series User Manual...

Страница 17: ...ll display the last retained readings indicated by the highlight area around the gas figures To view additional gas analysis channels press the Down key Additional channels will appear line by line if...

Страница 18: ...Next key to switch to Channel Group 2 Pressure Temperature and Velocity The display screen will change to show the last retained gas pressure temperature and velocity readings indicated by highlights...

Страница 19: ...ure that the anemometer is correctly orientated The arrow on the tip of the anemometer should be in line with the pipe NOT at right angles to it When the anemometer is as far into the gland as possibl...

Страница 20: ...g press the Start Sample button and the flow and differential pressure become live When the reading has stabilised press the Stop Sample key again to retain the reading This will return the highlight...

Страница 21: ...sappeared it is time to recharge the batteries or replace them with another battery pack To recharge the batteries simply plug in the battery charger lead to the socket on the top end of the instrumen...

Страница 22: ...the field you can of course recharge them later when you return to base Changing the gas filter There is a gas filter built into the input of the instrument Check this filter weekly and change it whe...

Страница 23: ...ruments involves the use of pressurised cylinders of test gases These may produce hazards including the following High pressure gas leakage Release of flammable gas mixtures Release of toxic gas mixtu...

Страница 24: ...0 for CO2 it is 40 0 and for O2 it is 20 9 IMPORTANT All test gas cylinders must be used in conjunction with a gas flow regulator set to 500 ml min To reset the instrument to the factory delta figure...

Страница 25: ...pecified concentration to the instrument DO NOT connect the gas cylinder direct to the instrument because this will cause irreparable damage Instead connect through a T piece to bypass most of the gas...

Страница 26: ...mbar 1 mbar resolution Static Pressure 200mbar 200mbar 1 mbar resolution Standard Accessories Battery Charger Carry Case Sample Pipe Manual Calibration Certificate Optional Gas Channels Maximum of 4...

Страница 27: ...luded to enable you to make quick and easy conversions from velocity measurements provided by the vane anemometer to flow rates Velocity Flow conversion chart 160 00 140 00 120 00 100 00 80 00 60 00 4...

Страница 28: ...0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 Velocity ms 1 Velocity Flow conversion chart 6000 00 5000 00 4000 00 3000 00 2000 00 1000 00 0 00 0 5 10 15 20 25 30 35 40 Velocity ms 1 GFM400 Series 24 GFM400 Series...

Страница 29: ...0 S E R I E S U S E R M A N U A L The formula for calculating the conversion is f 0 00283d v where f flow in m3h 1 d pipe inside diameter in mm v velocity in ms 1 GFM400 Series 25 GFM400 Series User...

Страница 30: ...e 2 An area in which an explosive gas air mixture is not likely to occur in normal operation and if it does occur will exist only for a short time Make certain that the area in which you intend to wor...

Страница 31: ...e generation of a spark or temperature capable of igniting the gas even if the instrument develops TWO faults 2 ib The safety circuits used will prevent the generation of a spark or temperature cable...

Страница 32: ...ment This assessment examines the design and construction criteria set out above and controls the manufacture This process is defined in Annex II of the European ATEX Directive 94 9 EC This allows the...

Страница 33: ...please check for any mechanical damage Any damage detected should be immediately reported to the relevant post office or to the carrier at your company s location Avoid moisture extreme temperatures...

Страница 34: ...instruments are precision products which will give fault free service if correctly handled If you handle them as described in the operating instructions your instruments and probes will remain in a se...

Страница 35: ...the vanes or the spindle The adjustment of the bearing screws must never be changed This can result in erroneous measurements Never allow hard objects to contact rotating impellers Cleaning agents wh...

Страница 36: ...applied to the parts with a fluff free cloth Only carry out surface cleaning The parts are never to be immersed in the solution Snap Head The snap head fixing system renders it very simple to fit a ne...

Страница 37: ...will be paid by the end user Conditions and exclusions To maintain this warranty the purchaser must perform maintenance and calibration as prescribed in this user guide This includes prompt replacemen...

Страница 38: ......

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