Heath-consultants GT Series Manual de usuario

1User Handbook

viiiUSER HANDBOOK3.3 BATTERY STATUS ... 3-33.4 TIME AND DATE ...

10-2USER HANDBOOK10.3 PRESSURE DISPLAYSWhen pressure test mode is selected from the menu, thenormal operating display is shown. See Fig. 10.1.Fig.

10-3PRESSURE MODE10.4 PREPARE INSTRUMENT (PRESSURE MODE)Zero the instrument before tubing is attached.To zero the instrument: Press and hold ZERO .C

10-4USER HANDBOOK10.5 PRESSURE BUTTON OPERATIONA summary of the button operation is detailed in Table10.1:LH(INVERT)RH(PUMP)CENTRE(RANGE)ACT

10-5PRESSURE MODE10.6.2 ZeroTo zero the instrument:(before tubing is attached) Press and hold the RH button .10.6.3 Menu / OffTo re-select

10-6USER HANDBOOK

11-1ALARMSALARMS11.1 GAS ALARMSThe following gas alarms are available according to gastype and are programmable according to application and/ or cu

11-2USER HANDBOOKNote: A Time Weighted Average (TWA) value is the meanaverage gas level over a specific period. The STELis 15 minutes and the LTE

11-3ALARMSIn the following examples, example 1 (Fig. 11.1) showsan instrument in confined space mode signalling a LOLOOxygen alarm. The a

11-4USER HANDBOOKExample 2 (Fig. 11.2) shows the instrument signalling aHIHI LEL alarm. Again the alarm warbles and all eight(8) LEDs ramp.

11-5ALARMSExample 3 (Fig. 11.3) shows an instrument in Leak TestMode with a Carbon Monoxide warning alarm. There is noaudible alarm and the LEDs d

ixCONTENTS5.8 CSM LOGGING ... 5-85.9 CSM CONFIDENCE SIGNAL ... 5-9BARHOLE TE

11-6USER HANDBOOKExample 4 (Fig. 11.4) shows an instrument in Leak TestMode with a HI LEL alarm. The audible alarm indicationis a high pitch tone

11-7ALARMSExample 5 (Fig. 11.5) shows an instrument in ConfinedSpace Mode with a LO O2 alarm. The audible alarmindication is a high

11-8USER HANDBOOKExamples 6 and 7 (Fig. 11.6 and Fig. 11.7) shows aninstrument in Confined Space Mode with Time WeightedAverage STEL and LTE

11-9ALARMSFig. 11.7 LTEL H2S Alarm11.5 ALARM TYPES11.5.1 Latching / Non LatchingEach alarm can be latching or non latching. Latching alarmsmu

11-10USER HANDBOOKThe following Table 11.1 shows the GMI default selections.Latching or non-latching options exist in all allowablealarms.Alarm

11-11ALARMSALARM TYPE LATCHINGYes / NoMUTEYes / NoAUDIBLEINDICATION VISUAL LEDINDICATIONDISPLAYLEL Warning N N / A N / A N / A Flash RangeLEL (HI)NY

11-12USER HANDBOOKThe following Table 11.2 shows the alarm options availablein the Leak Test and Confined Space Modes.LEAK TEST CSMFLAM CO H2S O2 FLAM

11-13ALARMS11.6 FAULT ALARMSRefer to Alarms Table 11.1 to identify the audible / visualindication for any of the following faults.11.6.1 Low

11-14USER HANDBOOKThe instrument can however still be used to detect andalarm on the other sensor(s) fitted.The faulty sensor will cause

11-15ALARMSIf fault remains, return instrument to an approvedService / Repair facility.alternating withFig. 11.9 Sensor Fault2) If a ZERO FAULT

xUSER HANDBOOK8.2 PURGE FEATURES ... 8-18.3 PURGE DISPLAYS ... 8-28

11-16USER HANDBOOKalternating withFig. 11.10 Sensor Fault11.6.4 Sample / Flow FaultIf a FLOW FAULT flag appears, alternating with mode asshown

11-17ALARMSFig. 11.11 Sample / Flow FaultCheck sample line, sample filter or probe for blockage, ifapplicable. Clear blockage then restart the pump.T

11-18USER HANDBOOK11.6.5 Calibration RequiredDuring warm-up, if the CALIBRATION REQUIRED flag isdisplayed and an audible alarm and Red LE

11-19ALARMS11.6.6 Service ExpiredDuring the warm up of the instrument, a check is done toverify if the service date has expired. If the instrument

11-20USER HANDBOOK

12-1OPERATOR MAINTENANCEOPERATOR MAINTENANCE12.1 CLEANINGCAUTION: Do not use polishes containing silicon orsolvent to clean the instrument

12-2USER HANDBOOK12.2.1 Probe Filter1) Hold the probe filter bulb then unscrew the probeconnector in a counter clockwise direction andremove th

12-3OPERATOR MAINTENANCEPROBE TUBEHYDROPHOBICFILTER(Part No. 67259)PROBE FILTER BULBFig. 12.2 Probe Filter Bulb Removal3) Hold the hydrophobi

12-4USER HANDBOOK4) Inspect the filter for contamination or damage.If either is evident, replace the filter.5) Fit a new Hydrophobic Probe F

12-5OPERATOR MAINTENANCE12.2.2 Chemical Filter (Accessory)The Chemical Filter assembly (Part No.67142) containswater absorbent silica gel

xiCONTENTSALARMS ... 11-111.1 GAS ALARMS ... 11-111.2 FL

12-6USER HANDBOOK2) Unscrew the chemical filter assembly in a counterclockwise direction, then remove the filter fromthe filter bulb as shown in

12-7OPERATOR MAINTENANCE5) The chemical housing filter disc must be replacedif it is damaged or contaminated.Using the flat end of a pencil or simila

12-8USER HANDBOOKFILTER HOUSINGADAPTORFILTER DISC(Part No. 67199)PENCIL(OR SIMILAR)Fig. 12.7 Adaptor Filter RemovalCAUTION The contents of th

12-9OPERATOR MAINTENANCE10) Attach chemical filter to filter bulb, in a clockwisedirection, then tighten to secure. See Fig. 12.4.Note: Care must

12-10USER HANDBOOK12.2.3 Cotton Filter (Accessory)The cotton filter assembly (Part No.67196) contains acotton filter to protect the inst

12-11OPERATOR MAINTENANCE2) Unscrew the cotton filter housing in a counterclockwise direction, then remove the housing fromthe filter bulb as s

12-12USER HANDBOOK7) Before attaching the probe connector to the cottonfilter housing, check the probe washer for signsof damage. If damaged, i

12-13OPERATOR MAINTENANCE12.3 BATTERY REPLACEMENTThe GT series instrument handle contains three batteriesthat provide the power required to operate

12-14USER HANDBOOK The Low Battery flag appears on thedisplay The instrument will not switch OnWhen the Low Battery flag appears on the disp

12-15OPERATOR MAINTENANCE12.3.1 Remove and Replace BatteriesWARNING 1: To prevent ignition of flammable orcombustible atmospheres, removebatt

xiiUSER HANDBOOKADDITIONAL INFORMATION ... 15-1Training ... 15-1Wor

12-16USER HANDBOOK1) Using a suitable screwdriver, unscrew in a counterclockwise direction and then remove the securingscrew from the battery cove

12-17OPERATOR MAINTENANCE3) Carefully lift then remove the three batteries fromthe compartment in the instrument handle, asshown in Fig. 12.12.N

12-18USER HANDBOOK4b) ALKALINE:Replace with three new LR 14 (Duracell, Energizeror Rayovac) alkaline batteries. Note polarity ofbatteries as sho

12-19OPERATOR MAINTENANCE6) Slide the battery cover over the instrument handleuntil the securing catch engages with theinstrument body.7) Check

12-20USER HANDBOOK A Commercial Battery Charger, available from mostelectrical outlets.Note: The batteries must be removed from the in-strument, as

12-21OPERATOR MAINTENANCEIf the instrument displays Charging Terminated, as shownin Fig. 12.16, then it has detected an excessive chargevol

12-22USER HANDBOOKStandard Instrument Charger (Universal Plug)(Part No. 67134)The instrument should be left overnight connected to thestandard charge

12-23OPERATOR MAINTENANCETo connect Standard Charger to the instrument:1) Lift dust cover from charger socket in rear face ofinstrument then connect

12-24USER HANDBOOKCharging Station(Part No. 67101)The charging station, shown in Fig. 12.19, is used tolocate the instrument securely whi

12-25OPERATOR MAINTENANCEPROBE LOCATIONSECURING STRAPPOWER ON INDICATORFig. 12.19 GT Series Charging Station

1-1INTRODUCTION1INTRODUCTIONThe GMI GT series instruments are designed to bemultifunction, multi-application gas detectors to suit all thene

12-26USER HANDBOOKTo install instrument in charging station:1) Check that instrument charging contacts, shownin Fig. 12.20, and the station

12-27OPERATOR MAINTENANCECHARGINGCONTACTSINSTRUMENT HANDLESTORAGE CLIPSECURINGSTRAPEXTENSION POLE LOCATIONIN INSTRUMENT HANDLEFig 12.21 Charging S

12-28USER HANDBOOK4) Insert probe in location in charging station, asshown in Fig. 12.19.5) If permanent 12V power supply is not install

12-29OPERATOR MAINTENANCE12V / 24V Vehicle Charger(Part No. 66206)The 12V / 24V Vehicle Charger, shown in Fig. 12.23,provides the option of

12-30USER HANDBOOK

13-113CALIBRATIONThe instrument has been calibrated for particular gases.Where any doubt exists the product should be returnedto GMI or an aut

13-2USER HANDBOOK13.1 CALIBRATION VALIDITYCalibration validity is the responsibility of the user. Undernormal operating conditions a 12 month p

14-114ACCESSORIESAccessories available for theGT series instruments areas follows:Std. AccessoriesPart Number Description67108 Carrying Case6

14-2USER HANDBOOK67120 Protective Rubber Boot67134 Standard Instrument Charger(Universal Plug)66206 12V/24V Vehicle InstrumentCharger67101 Charging

15-115ADDITIONAL INFORMATIONTrainingTraining courses are available on all GMI products. ContactGMI Marketing Department for further details:Tel: +44

1-2USER HANDBOOKIn the following procedure, the five instrument buttonsshown in Fig 1.2 are referred to as detailed below:UpLHRHCentreDownFig.

15-2USER HANDBOOK

A-1TYPICAL OPERATING PARAMETERSTYPICAL OPERATINGPARAMETERSTypical operating parameters are as follows:Gas Range ResolutionRangePPM 0 to 10000 1

A-2USER HANDBOOKDimensions (excl. probe)290mm (11.4) x 95mm (3.7) x 55mm (2.2)Weight (incl. probe & batteries)0.78kg (1.7lbs.)Temperature Limi

IINDEXIndexSymbols(LEL) ALARMS 11-1(O2) ALARMS 11-1AAcknowledging 11-9ADVICE, DISPOSAL iALARM TYPES 11-9ALARMS 11-1ALARMS, (LEL) 11-1ALARMS,

IIUSER HANDBOOKCO BUTTON OPERATION7-6CO DISPLAYS 7-3CO FEATURES 7-1CO LOGGING 7-8CO MENU 7-2CO RANGES 7-1CO) ALARMS 11-1Confined Space 2-2CONFI

IIIINDEXFFAULT ALARMS 11-13Fault, Sample 11-16Fault, Sensor 11-14Fault, Zero 11-13FEATURES, BARHOLE 6-1FEATURES, CO 7-1FEATURES, CSM 5-1FEATURE

IVUSER HANDBOOKMMAINTENANCE, OPERA-TOR 12-1MANUAL CALIBRATIONSYSTEM 13-1, 14-1MENU, CO 7-2MENU, MODE 3-17MODE MENU 3-17MODES OF OPERATION 2-2MOD

VINDEXRRANGES, BARHOLE 6-1RANGES, CO 7-1RANGES, CSM 5-1RANGES, INSTRUMENT 1-3RANGES, PRESSURE 10-1RANGES, PURGE 8-1RANGES, SNIFFER 9-1Rating, P

VIUSER HANDBOOKZZero Fault 11-13

1-3INTRODUCTIONThe bottom line of the instrument display may indicatebutton press options. For example, to select Yes fromthe follo

GMI Head Office:Inchinnan Business Park,Renfrew,PA4 9RG,Scotland, U.K.Telephone +44 (0)141 812 3211Fax +44 (0)141 812 7820e-mail: [email protected]

1-4USER HANDBOOK

2-1GENERAL FEATURESGENERAL FEATURES An integral pump draws the required sample overall of the sensors The pump flow is monitored by means of a

2USER HANDBOOKIssue 230/05/06Part Number: 67112GMI welcomes comments on all our publications.Your comments can be of great value in help

2-2USER HANDBOOKBy simple selection of the application you need, theappropriate gas(es) are shown on the display and onlythe necessary

2-3GENERAL FEATURESPurgeThis mode is used in gas and air purging applications.Refer to Chapter 8 for Purge mode operation.SnifferThis mode is use

2-4USER HANDBOOK

3-1OPERATING PROCEDUREOPERATING PROCEDURECheck the following: The instrument is clean and in good condition. The batteries are in good condition,

3-2USER HANDBOOK Each time you use the instrument, carry out the followingprocedure:3.1 SWITCH THE INSTRUMENT ONTo switch the instrument ON in f

3-3OPERATING PROCEDURE3.2 INSTRUMENT IDENTIFICATIONDuring the warm-up cycle, the instrument display identifiesthe model, serial number, software

3-4USER HANDBOOK3.4 TIME AND DATEThe time and date from the instruments built-in clock isdisplayed on the screen during warm-up, as shown

3-5OPERATING PROCEDURE2. Cal Due Date and overdue date messages aredisplayed.Calibration due date is displayed, as shown in Fig.3.5.Fig. 3.5 Cali

3-6USER HANDBOOK3. Cal Due Date message is displayed with useracknowledge if overdue (Default).Calibration due date is displayed as shown in

3-7OPERATING PROCEDURETo switch OFF: Press and hold NO . The screen, shown inFig. 3.9, is displayed.Fig. 3.9 Switch OFF Press and hold bot

iCOPYRIGHTCOPYRIGHTThis User Handbook is copyright of Gas Measurement Instruments Ltd (GMI) andthe information contained within, is for use only with

3-8USER HANDBOOKIf overdue but within the extended period, thescreen, shown in Fig. 3.11, is displayed.Fig. 3.11 Calibration OverdueThe

3-9OPERATING PROCEDUREFig. 3.12 Switch OFF Press and hold both the LH button and the RHbutton simultaneously to proceed with theswitch-off

3-10USER HANDBOOKFig. 3.14 Switch OFFTo proceed with the switch-off sequence. Press and hold both the LH button and the RHbutton simultaneo

3-11OPERATING PROCEDURE2. Service Due Date and overdue date messagesare displayed, as shown in Fig. 3.15. Fig. 3.15 Service Due DateThe screen,

3-12USER HANDBOOK3. Service Due Date message is displayed withuser acknowledge if overdue.Service due date is displayed, as shown in

3-13OPERATING PROCEDURETo switch OFF: Press and hold NO . The screen, shown inFig. 3.19, is displayed.Fig. 3.19 Switch OFF Press and hold

3-14USER HANDBOOKIf overdue but within the extended period, thescreen, shown in Fig. 3.21, is displayed.Fig. 3.21 Service OverdueThe user

3-15OPERATING PROCEDUREFig. 3.22 Switch OFF Press and hold both the LH button and the RHbutton simultaneously to proceed with theswitch-of

3-16USER HANDBOOKThe screen, shown in Fig. 3.24, is displayed whenthe Service date has expired. i.e. overdue.Fig. 3.24 Switch OFFTo proceed with

3-17OPERATING PROCEDURE3.7 SWITCH THE INSTRUMENT OFF OR RE-ENTER THE MODE MENUTo initiate the shut down sequence: Press and hold both the LH and R

iiUSER HANDBOOKSAFETY The instrument must be regularly serviced and calibrated by fully trainedpersonnel in a safe area. Batteries: Alkaline or *Re

3-18USER HANDBOOKalarms are active, the user must press and holdboth the LH and RH buttons simultaneouslyfor an additional five (5) seconds

3-19OPERATING PROCEDURETo highlight the required option: Press the UP or DOWN buttons, then . .To select the highlighted option: Press and hold O

3-20USER HANDBOOK

4-1LEAK TEST MODELEAK TEST MODEThis mode is for the technician to investigate odour orleak complaints and to pinpoint the leak.4.1 LEAK TE

4-2USER HANDBOOK Manual Range selection between Flam and Flamplus CO (Dual Display) Threshold adjustment Display Invert Automatic datalogging4.3

4-3LEAK TEST MODEFig. 4.2 Normal Display ExampleNote 1: Any faulty sensor will continue to display a spanner(wrench) symbol alternating with the

4-4USER HANDBOOKWhen the PPM autoranges to LEL, the display changes tothe example shown in Fig. 4.4.Fig. 4.4 LEL DisplayIf displaying the maximum rea

4-5LEAK TEST MODEIf a CO sensor is included in your instrument and the COconcentration rises above a pre-set level, the display willchange together

4-6USER HANDBOOKFig. 4.7 Alarm AcknowledgeWhen CO levels are below alarm concentration, the Centrebutton enables return to flammable only. This bu

4-7LEAK TEST MODE4.5 DESCRIPTION OF LEAK TEST BUTTONOPERATION4.5.1 Ticker (Geiger) ON / OFFTo enable and disable the audible Ticker (Geiger):(in th

iiiCOPYRIGHTAREAS OF USEExposure to certain chemicals can result in a loss of sensitivity of the flammablesensor. Where such environments are known or

4-8USER HANDBOOKFig. 4.8 Ticker (Geiger) Threshold4.5.3 Range SelectionThe instrument initially selects the PPM range whichautoranges

4-9LEAK TEST MODE4.5.5 Max / LiveTo show the Maximum readings:(since the mode was selected) Press and hold the LH button .To return display to

4-10USER HANDBOOK4.5.7 PumpTo switch the pump ON and OFF: Press the RH button 4.5.8 ZeroTo zero the Flammable PPM range when displayed: Press

4-11LEAK TEST MODEWhen the menu appears on the screen, releasethe buttons, otherwise the instrument will proceedinto the switch OFF process

4-12USER HANDBOOKFig. 4.9 PPM Level / LED Sequence4.7 LEAK TEST ALARMSRefer to Chapter 11.4.8 LEAK TEST LOGGINGAutomatic datalogging is active f

5-1CONFINED SPACE MODECONFINED SPACE MODEThis mode is used for confined space pre-entry testingand for personal monitoring in areas such as

5-2USER HANDBOOK Manual Logging is also available. This will log allgas concentrations at that instant. Time weighted averaging for Alarms

5-3CONFINED SPACE MODEWhen an instrument has an alarm active, the bottom lineof the display changes. A sample fault will change bothtop and bo

5-4USER HANDBOOKWhen viewing Min in confined space mode, Confined Minidentifier is in the top of the display, with the option ofselecting L

5-5CONFINED SPACE MODE5.5 DESCRIPTION OF CSM BUTTON OPERATION5.5.1 LightsTo switch ON the backlight: Press and hold the Centre button .To switch

ivUSER HANDBOOK

5-6USER HANDBOOKNote 2: If no button is pressed, after 30 seconds thedisplay reverts to live reading.5.5.3 Alarm AcknowledgeHIHI, LOLO for O

5-7CONFINED SPACE MODE5.5.4 Flow FaultBefore clearing a flow fault alarm the instrument must bechecked for water ingress or blockage.To clear a

5-8USER HANDBOOKNote: In Confined Space Mode, to prevent inadvertentlyswitching instrument OFF or changing mode whilealarms are active, the user

5-9CONFINED SPACE MODE5.9 CSM CONFIDENCE SIGNALDuring normal operation, the instrument sounds aconfidence beep and illuminates the bottom

5-10USER HANDBOOK

6-1BARHOLE TESTING MODE6BARHOLE TESTING MODEThis mode is used to locate underground leaks and onstart-up will be ranged to 0-100% LEL

6-2USER HANDBOOK6.3 BARHOLE DISPLAYSDuring the warm-up period, all applicable sensors will bechecked and the display will indicate any sensor

6-3BARHOLE TESTING MODETo highlight the required option: Press the UP or DOWN buttons, then . .To select the highlighted option: Press and hold O

6-4USER HANDBOOKTo change the sample time: Press the UP or DOWN buttons.Sample time range = 10 to 300 seconds.Holding the button will perform

6-5BARHOLE TESTING MODETo stop purge: Press and hold OK .The first barhole screen is then displayed:Fig. 6.5 Barhole TimerUp to six barhole

vREVISION RECORDDate Issue Description Of Change07/09/2005 1 New Handbook30/05/2006 2 To incorporate effect ofCR 4223, CR 4229, CR4279 and various

6-6USER HANDBOOKFig. 6.6 Barhole Numbering Between Barhole tests there is a mandatory Purgemode to ensure that any gas in the instrument

6-7BARHOLE TESTING MODE6.3.2 Non Timed ModeIf NON TIMED is selected or has been pre-selected inconfiguration then the instrument per

6-8USER HANDBOOKUp to six barhole readings can be stored. These areidentified as Barhole 1 to Barhole 6.After the first reading is stored

6-9BARHOLE TESTING MODEFig. 6.10 View Barhole ResultsTo return the display to normal operation: Press and hold LIVE .If a Flow Fault or Bead Fa

6-10USER HANDBOOK6.5 BARHOLE OPERATIONA summary of the button operation is detailed in thefollowing table:LH(INVERT)RH(PUMP)CENTRE(RANGE)AC

6-11BARHOLE TESTING MODETo switch ON the flashlight: Press and hold the Centre button again.The backlight and flashlight are both timed to switch OF

6-12USER HANDBOOK.6.6.5 Menu / OffTo re-select the Mode Menu: Press and hold both the LH button and the RHbutton .While both buttons are depre

7-1CO (CARBON MONOXIDE) MODECO (CARBON MONOXIDE) MODEThe CO mode is used to check the interior of premisesand appliances for CO leakage.7

7-2USER HANDBOOK7.3 CO MENUOn selection of CO mode, all three of the CO sub-modesshown in Fig. 7.1 can be available to the user.(See note 3)

7-3CO (CARBON MONOXIDE) MODE7.4 CO DISPLAYSDuring the warm-up period, all applicable sensors will bechecked and the display will indicate any

viUSER HANDBOOK

7-4USER HANDBOOK7.4.1 CO DirectIn this option, normal atmospheric air is checked for COcontent.The typical display for this mode is shown in Fig. 7.3

7-5CO (CARBON MONOXIDE) MODE7.4.3 Air-Free COAir-free CO is the CO reading modified by the O2 reading,therefore this measurement will only be

7-6USER HANDBOOK7.5 CO BUTTON OPERATIONA summary of the button operation is detailed in Table 7.1:LH(INVERT)RH(PUMP)CENTRE(RANGE)ACTIONPRESSINVERTDI

7-7CO (CARBON MONOXIDE) MODE7.6.2 Manual ZeroOnly available in differential CO mode.To zero differential CO: Press and hold ZERO .7.6.3 Manua

7-8USER HANDBOOK7.6.5 Menu / OffTo re-select the Mode Menu: Press and hold both the LH button and the RHbutton .While both buttons are depresse

8-1PURGE MODEPURGE MODEThe purge mode is used in gas and air purging applications.8.1 PURGE RANGESPurge mode will have the following ranges availabl

8-2USER HANDBOOK8.3 PURGE DISPLAYSDuring the warm-up period, all applicable sensors will bechecked and the display will indicate any sensor f

8-3PURGE MODETo display both % Gas and % O2:(as shown in Fig. 8.3) Press the Centre button Fig. 8.3 Gas and Oxygen Display8.4 PURGE BUTTON OP

8-4USER HANDBOOK8.5 DESCRIPTION OF PURGE BUTTONOPERATION8.5.1 LightsTo switch ON the backlight: Press and hold the Centre button To switch ON the f

8-5PURGE MODE8.5.4 Menu / OffTo re-select the Mode Menu: Press and hold both the LH button and the RHbutton .When the menu appears on th

viiCONTENTSCONTENTSCOPYRIGHT ... iLIABILITY ...

8-6USER HANDBOOK

9-1SNIFFER MODESNIFFER MODEThis mode is used to find small fitting leaks. Fast detectionrates are achieved using a semiconductor sensor in thepro

9-2USER HANDBOOKalternating withFig. 9.1 Sensor CheckTo zero the reading (in fresh air) Press and hold ZERO .Note: Pump must be switched ON to zer

9-3SNIFFER MODE9.4 SNIFFER BUTTON OPERATIONA summary of the button operation is detailed in Table 9.1:LH(INVERT)RH(PUMP)CENTRE(RANGE)ACTIONPRESSINVE

9-4USER HANDBOOK9.5.2 PumpTo switch pump ON and OFF: Press the RH button 9.5.3 ZeroTo zero the ppm range Press and hold the RH button .Note:

9-5SNIFFER MODE1. Press and hold - to enable visual only.2. Press and hold again - to enable both audible andvisual.9.5.6 Ticker (Geiger) AdjustT

9-6USER HANDBOOK9.6 SNIFFER TICKER (GEIGER) INDICATIONThe Ticker (Geiger) range at start up is 0-1000 ppm.For any subsequent PPM concentration, the T

9-7SNIFFER MODEFig. 9.3 Ticker (Geiger) LED Illumination

9-8USER HANDBOOK

10-1PRESSURE MODEPRESSURE MODEIn this mode, the instrument can be used as a manometerto measure appliance and regulator pressure and to checkthe syst