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Triple Plus+ Triple Plus+ IR User Manual - Ex-Ox-Tox

1. 7 8 3 1 Using the Menu Syste apaa 8 3 2 Configuration Options eire edet nne teer pra i 10 BPS MUCK Gel RETE 15 3 4 Pellistor saving Triple Plus 21 212422200200 00020 15 3 5 Configuring The Instrument With Portables 16 Battery C Da Ig ea ada 18 Data 20 VI Troubleshooting 21 Maintenance and 22 FE EP 22 7 2 Replacing the Lead Acid Battery 22 7 3 Fitting the Lithium ion Battery 23 ZA Replacing sensor module ccu rra tiro Fee tere reor end 23 7 5 BACKUP MEM OLY rete ses ee Ue EUER ORI ecd d RS 23 VII Limitations Of USE 24 IX Accessories and SPANES vase 25 Appendix 1 Pumped version 27 Appendix 2 Default Flammable Correction Factors 28 Appendix Front Panel Text 29 Appendix 4 Sensor LImitetiofis oen tatur 31 Appendix 5 Menu MIBD uro n
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3. The user can then monitor pat terns of gas leaks and so provide essential information to an incident inquest The three part injection moulded TRIAX case is light yet durable and resistant to water and dust It houses a digital electronic circuit board up to four sen sor modules a piezo electric alarm sounder and a power supply board which restricts available current to the rest of the instrument and so ensures intrinsic safety The battery type is chargeable lead acid which is accessible via an exter nal hatch to permit easy replacement and maximum instrument usage but it is more likely that the facility to recharge the instrument with the battery pack in situ will be used Crowcon have recently introduced the Lithium ion recharge able battery pack which offers superior performance over lead acid batteries If your detector is not fitted with this new option please contact your local agent for details The top panel incorporates a backlit liquid crystal alphanumeric display on which gas levels and instrument messages appear four embossed tactile push buttons to control instrument functions a small green LED which flashes periodically to confirm operation and a large high intensity red LED which flashes when an alarm condition is encountered Additionally the top panel includes two small windows through which the instrument sends infrared signals when it is located in its dedicated Charger Interface unit Triple Plus IR Triple Plus
4. IR is a specific version of the Triple Plus utilising an infrared sensor for the detection and measurement of hydrocarbons in place of the conven tional pellistor sensor Using infrared technology in place of pellistor technology has a number of advantages as follows a No requirement for oxygen in the background gas i e operation in inert backgrounds 2 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR General description b No damage caused by exposure to high gas concentrations No poisoning effects d Ability to measure at volume levels as well as LEL e Fail safe It must be remembered however that an infrared hydrocarbon sensor will have no response to hydrogen and is therefore unsuitable for use where hydrogen forms a significant part of any potential flammable risk In order to ensure ready identification of Triple Plus IR the membrane switch assembly is yellow in place of the normal orange and carries the name designation Triple Plus IR The infrared sensor module in Triple Plus IR will be supplied with a calibration for one of four hydrocarbon species i e methane propane butane or ethylene This calibration is factory set Whatever the calibrated species the infrared sen sor will respond to any hydrocarbon present but with differences of response to different species However unlike for a pellistor sensor it is not possible to assign simple correction factors as the basic r
5. You Can Trust Triple Plus and Triple Plus IR Configuration options tor and the actual correction factor itself may be modified Pellistor only INSTANTANEOUS ALARM LEVELS The gas level at which instantaneous alarms are triggered This configuration data is available for all sensor channels with sensors having 3 rising alarm levels except oxygen which has 2 falling and 1 rising alarm level SHORT AND LONG TERM ALARM LEVELS These parameters are only avail able for toxic channels and set the level at which an exposure limit alarm will be triggered ALARM MUTE The mute function can be enabled When this feature is enabled it is possible to access the MUTE parameter in the instrument s menu system and to mute alarms Without enabling the Alarm Mute feature via Portables PC the MUTE function is not available OVERRANGE OPTION This selects the instrument s action when a sensor goes overrange See section 2 3 Overrange ZERO OPTION By default the ZERO option is in the passworded section of the configuration menu It is possible to change the location of the ZERO option and have it placed at the very top of the configuration system If this is done then pressing the CAL button will bring up the following list of options MENU EVENT LOG ZERO QUICKCAL GAS MIXTURE The exact concentrations of gas in the multi gas mixture being used with the quick calibration may be set here gt CROWCON 17 Gas Detection You Can Trust Battery
6. and on both short and long term Time Weighted Average TWA gas exposure levels Note that the Time Weighted Average toxic gas exposures are reset to zero when the instru ment is switched off A well charged battery will cause the display to indicate in excess of 5 8 V it is considered flat at 5 0 V Below 5 3 V a operational instrument will display a low battery warning an off instrument will not switch on About 5 seconds after the instrument is switched on the Triple Plus Plus IR will complete its self tests and indicate the current gas levels If the instrument enters an alarm condition then the sounder will be triggered and the alarm LEDs will flash Once the gas levels are below alarm levels i e safe gas levels the alarm warning may be switched off by pressing the UNMARKED button If alarms are muted the red alarm LED will not flash nor will the alarm sounder sound when the instrument is in alarm the only indication of the alarm condition will be the word ALARM alternately flashing with the gas value of the channel in alarm 4 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Operation 2 2 Display The information on the display is dependent on the type of sensors installed in the instrument For each sensor module installed the display indicates the gas concentration the units of measurement e g ppm and the channel name e g HS Each sensor module contains analogue circuitry to sup
7. condition of certification is that the instrument is not used with ethyl nitrate vapours or in hazardous areas containing IIC gases e g hydrogen acetylene where the risk of mechanical damage to the enclosure is high 2 5 Backlight In low ambient light conditions the backlight can be activated to illuminate the display by pressing the BACKLIGHT button To switch off the backlight press the BACKLIGHT button again or it will turn off automatically after a configurable timeout period of 10 20 or 30 minutes Alternatively the backlight may be configured to remain on permanently or to never timeout once switched on See LIGHT in section 3 2 Configuration Options In an alarm condition the backlight is automatically turned on 2 6 Alarms When the Triple Plus Plus IR encounters an alarm condition the red lights flash the beacons activate and the sounder emits a loud fast bleep Where permitted instantaneous toxic gas alarms may be accepted by pressing the UNMARKED button In this case the sounder is silenced but the red lights continue to flash With instantaneous alarms the word ALARM will flash next to the gas name Time Weighted Average exposure limit alarms will flash 6 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Operation the whole display with the warning All instantaneous alarm types are latch ing which means that they may only be reset by pressing the UNMARKED button when the gas hazar
8. the possible values the front panel configuration param eters may take Top level configuration items accessible by pressing the CAL button Text Description MENU Enter configuration menu passworded LOG Enter data logging menu ZERO Zero all channels EVENT Mark event in the data log Only present at this level if so selected via Portables MENU level configuration items Text Description Options ALARM Select alarm mode INSTANT ALL ACTIVE TWA ONLY BUTTN Select programmable button function NOTHING NORMAL AVERAGE TWA TOXIC PEAK HOLD PUMP SILENT ALARMS CALIB Calibrate selected channel DISPY Select display mode NORMAL AVERAGE OFF TWA TOXIC PEAK HOLD FLAMM Select flammable correction factor NO CORRECTION LEVEL Allows setting of flammable alarm 1 196 L E L and alarm 2 level LIGHT Select backlight timeout ALWAYS ON NO TIMEOUT 10 20 or 30 MINUTE TIMEOUT MUTE Select SILENT ALARMS or AUDIBLE ALARMS OFF Select instrument switch off mode OFF ENABLED OFF DISABLED PUMP Pump on or off GO STOP START Start up options NOTHING LOG ZERO ZERO amp LOG TIME A Allows edit of instrument time hours and minutes ZERO Zero all channels Only if not selected to be at the higher level via Portables PC gt CROWCON 29 Gas Detection You Can Trust Appendix 3 Sensor Limitations Triple Plus and Triple Plus IR Only if MUTE function enabled via Portables LOG level configura
9. 0 LEL 5011318 Sensor Module Propane Dual Range 0 100 LEL 0 100 Volume 5011319 Sensor Module Butane 0 100 LEL 011320 Sensor Module Butane Dual Range 0 100 LEL amp 0 100 Volume 011321 Sensor Module Ethylene 0 100 LEL 5011322 Sensor Module Ethylene Dual Range 0 100 LEL 0 100 Volume 5011323 Sensor Module Acetylene 0 100 LEL 5011790 Sensor Module Acetylene Dual Range 0 100 LEL amp 0 100 Volume 5011792 Triple Plus Membrane Switch Assembly 01823 Note IR sensors should not be fitted and will not be recognised by standard Triple Plus units For additional spares please contact Crowcon Readily absorbed gases they will not be detected if an aspirator or hose are used and are unsuitable for use in pumped instruments This broad range sensor has a high level of cross sensitivity and it can be used to monitor many gases For additional spares please contact Crowcon 26 gt CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Appendix 1 Pumped version optional Appendix 1 Pumped version optional The internal pump when used in conjunction with the external aspirator flow head and sampling tube enables the Triple Plus Plus IR to monitor inacces sible atmospheres It offers a consistent flowrate and is not fatigued unlike the manual hand bulb The pump mode may be defined within the calibration menu to be either pump GO or STOP This enables the instru
10. Battery Low Green LED flashes quickly the sounder frequency increases and a warning is flashed on the display Use cradle charger interface unit to charge the unit 5 hours for a full charge for lead acid 8 hours for Li ion Calibration Setting up Pressing CAL and entering a password enables the instrument to be recalibrated and to change its operating modes and configuration Use Of Bulb Sampling Aspirator Locate flowhead under lip above sensor apertures and secure with the two half turn fasteners Squeeze bulb once every second to obtain the required flow rate of 0 5 litre in 3 gt CROWCON Gas Detection You Can Trust General description Triple Plus and Triple Plus IR General Description Triple Plus Crowcon Triple Plus is microprocessor controlled portable gas detector which is capable of monitoring up to four gas types simultaneously and providing warn ing of hazardous levels Using electrochemical catalytic and thermal conductivity sensors the instrument may be configured to detect any practical combination of oxygen toxic and flammable gas See Appendix 4 for notes on sensor limitations The built in data logging facility records gas levels of all four channels The user can choose the intervals at which subsequent readings are taken They can then be downloaded to a computer In this way a detailed evaluation of logged readings of accumulated exposure can be made see section 5
11. Charging Triple Plus and Triple Plus IR IV Battery Charging The new LIBRA Lithium ion battery pack must be charged for a full 12 hours before first use This will ensure the life of the new battery A ferrite clamp is included with the Li ion battery pack Install the ferrite clamp to the D C charging lead as shown The new CROWCON battery pack consists of a rechargeable Lithium ion battery pack It has sufficient capacity to power the instrument for 12 hours with one flammable one oxygen and two toxic gas sensors installed Full recharge from flat is accomplished in 8 hours To use Triple Plus Plus IR CHARGER INTERFACE locate the complete instru ment in the charger housing sprung contacts ensure connection and observe that the red power LED glows more brightly An overnight charge is convenient to ensure usability every day Note when the instrument is placed into a charger or charger interface which is fitted with the new LIBRA lithium ion battery pack the unit will turn off and start charging If performing calibration or maintenance work turn the instru ment on when fitted into the charger or back on again if switched off when placed in the charger The Charger Interface also allows communication between the instrument and a computer To use Triple Plus Plus IR CHARGING UNIT locate the instrument do not switch it on in the charger housing and observe that the charging indicator LED glows A discharg
12. Gb DUAL TRIPLE QUADRUPLE FLAMMABLE GAS CHANNEL 0 100 LEL METHANE ALARM SETTINGS LEL LEL LEL OXYGEN CHANNEL 0 25 ALARM SETTINGS 19 HYDROGEN SULPHIDE CHANNEL 23 5 1 Vl 0 50 ppm ppm ALARM SETTINGS INSTANTANEOUS 5ppm ppm 15 MIN TWA 10ppm ppm 8 HR TWA 5ppm ppm CARBON MONOXIDE CHANNEL 0 500ppm ppm ALARM SETTINGS INSTANTANEOUS 30ppm ppm ppm ppm 15 MIN TWA 200ppm ppm 8 HR TWA 30ppm ppm Special Version CHANNEL GAS RANGE ALARM SETTINGS INSTANTANEOUS 15 MIN TWA 8 TEST ENGINEER CROWCON EQUIPMENT IS TESTED AND CALIBRATED IN ACCORDANCE WITH PROCEDURES REFERRED TO IN CROWCON S LRQA VALIDATED QUALITY MANUAL GUARANTEEING CALIBRATION TO 1809000 STANDARDS OF RELIABILITY AND REPEATABILITY STANDARD CALIBRATION GAS MIXTURES HAVE BEEN PREPARED IN ACCORDANCE WITH 1509001 2008 Contents Quickstart Guide eee reete venen eenen 1 l General DESSCHDEOQP dcc itte einder aans 2 EL 4 EAS TI el On 4 2 2 DISDIAY 5 2 3 6 e ER E 6 2 5 erster m 6 PECH CER 6 2 7 Status Screens Alatm Reset dte o IER ded 7 2 8 Switching Ohf
13. SAFETY FOR USE IN HAZARDOUS LOCATIONS CLASS GROUPS A B C amp D TEMP CLASS T3C ONLY WHEN USED WITH CROWCON BATTERY PACK P N 01013 OR BATTERY PACK P N CO11198 1 equipment is Category 2G and may be used zones 1 and 2 with flammable gases and vapours with apparatus groups IIA IIB amp IIC and with temperature classes 2 T3 T4 2 equipment is only certified for use in ambient temperatures in the range 20 C to 50 C and should not be used outside this range 3 Use only battery pack supplied by Crowcon Charging is only permitted in the non hazardous area DO NOT CHARGE IN HAZARDOUS AREA 4 equipment has not been assessed as a safety related device as referred to by Directive 94 9 EC Annex Il clause 1 5 and IEC Certfication Scheme for Explosive Atmospheres 5 Repair of this equipment shall be carried out by the manufacturer or in accordance with the applicable approvals regulations Copyright Crowcon Detection Instruments Ltd 2010 All rights are reserved No part of the document may be photocopied reproduced or translated to another language without the prior written consent of Crowcon Detection Instruments Ltd Publication number M07701 CALIBRATION CERTIFICATE INSTRUMENT DETAILS SERIAL NO CERTIFICATE NO SIRA 02 2176 TYPE MONO UL CLASSIFIED En 2G Exibd IC T4
14. Triple Plus Triple Plus IR Ex Ox Tox Gasdetectie Westerdreef 5V 2152 CS Nieuw Vennep Telefoon 0252 620885 E mail info exoxtox nl Website www exoxtox nl 07701 February 2010 gt CROWCON Issue 4a Gas Detection You Can Trust Safety information WARNING Do not change the battery in a flammable atmosphere WARNING Substitution of components may impair intrinsic safety WARNING Read the instruction manual before use Instructions specific for use in hazardous areas The following instructions apply to equipment cov ered by certificate numbers Sira O2ATEX2176X IECEx 51 06 0084 The following information covers all relevant points listed in clause 1 0 6 of the EHSR s of the ATEX direc tive and Assessment The certification markings are as follows CROWCON TRIPLE PLUS 126 SIRA 02 2176 Ex ib d IIC T4 20 C lt Ta lt 50 C SIR 06 0084 CHARGING 9 16 666mA max WARNING DO NOT CHARGE THE BATTERY IN HAZARDOUS LOCATION Use only Crowcon 01006 battery pack Not to be used in hazardous areas containing greater than 21 oxygen Not to be used without its full leather case in hazardous areas Read and Understand Manual Before Operating Manufactured by Crowcon Abingdon OX14 1DY UK aal xxxx CROWCON DETECTION INSTRUMENTS LTD TRIPLE PLUS ote 66Y6 ONLY AS TO INTRINSIC
15. Triple Plus IR Troubleshooting Guide Troubleshooting Guide SYMPTOM DIAGNOSIS REMEDY CHECK Does not switch on Battery flat Recharge battery Does not switch off OFF disabled Alter configuration No audible tick Tick disabled Alter configuration Alarm signals no gas Alarm latched Reset with UNMARKED button Flashing red alarm INST toxic alarm Reset if possible check Sounder silent accepted configuration Gas reading no gas Zero drifted Zero instrument Unstable inaccurate Sensor failed Recalibrate or replace reading sensor Loading Defaults mes Back up battery is dis Recharge unit overnight sage on display screen charged switched on in charger then re configure and recalibrate Short life from Li ion Low voltage output Charge fully before use battery pack from battery on start up See SETTING UP or CONFIGURING THE INSTRUMENT VIA PORTABLES PC see MAINTENANCE AND CALIBRATION CROWCON 21 Gas Detection You Can Trust Maintenance and Calibration Triple Plus and Triple Plus IR VII Maintenance and Calibration Crowcon recommends monthly gas response checks and a recalibration interval of 6 months Flammable sensors will respond to hydrogen and most hydrocar bons but will only be calibrated for a specific gas typically methane Note when the instrument is placed into a charger or charger interface which is fit ted with the new LIBRA lithium
16. ace Il Europe C01438 Portables PC Software CD C01832 Spares list General Spares Membrane switch protector sheet of 2 05809 Carrying strap 01323 Main PCB English 5011298 5011298 Main PCB Dutch S011298 D Safety component PCB 5011301 3 Sounder 5011300 Lithium ion battery pack for approved units built after February 2010 C01006 Spare lithium ion battery pack For ATEX IECEx units built before February 2010 C01007 Triple Plus only Sensor assemblies 0 100 LEL methane flammable 5011375 0 100 vol methane 501423 0 50 ppm hydrogen sulphide 501240 0 500 ppm carbon monoxide 501241 0 10 ppm sulphur dioxide 501242 0 5 ppm chlorine 501243 0 10 ppm nitrogen dioxide 501244 CROWCON 25 Gas Detection You Can Trust Accessories and spares 0 100 ppm nitric oxide 0 25 vol oxygen 0 10ppm hydrogen chloride 0 25ppm hydrogen cyanide 0 50ppm ammonia 0 2000ppm hydrogen 0 2ppm phosphine 0 100ppm volatile organics 0 10ppm ethylene oxide 0 10ppm hydrogen fluoride Triple Plus IR only Sensor assemblies Triple Plus and Triple Plus IR 501245 5011371 501724 501725 501726 501250 501252 5011367 5011366 501832 Sensor Module Methane 0 100 LEL UK 011316 U Sensor Module Methane 0 100 LEL ATEX 5011316 Sensor Module Methane Dual Range 0 100 LEL amp 0 100 Volume ATEX 5011317 Sensor Module Propane 0 10
17. ated the instrument should have been zeroed Now follow this procedure Press both of the middle 2 buttons and hold them down for 5 7 seconds The instrument will announce that the Quick Calibration has been initiated and remind the user that the instrument should have been zeroed before this procedure is invoked The instrument will now alternately flash the gas concentrations it is expecting to be applied and the prompt CALIBRATE ALL INPUTS with the two outer keys labelled with YES and NO Pressing YES moves on in the QuickCal sequence NO abandons the QuickCal and the instrument returns to the normal gas monitoring screen The instrument will now issue the prompt Is gas on sensors with the two outer keys labelled YES and NO as before Ensure the correct test gas is applied to the instrument and press YES Pressing NO returns the instrument to the normal gas monitoring display If YES is pressed the display will change to SENSORS SETTLING with a line of dots appearing on the bottom line of the display to indicate the instrument is working The instrument will now wait until there appears to be a good steady flow of gas and then the calibration will be performed If the instrument per ceives that the gas level is not steady then the message Gas not stable will be displayed and the calibration aborted If all channels are successfully calibrated the instrument will display the message Calibration successful othe
18. ation menu It is password protected and described below EVENT This marks an event in the data log There is no menu beneath this option LOG This selects the log menu described below How to enter the configuration Menu Use the scroll buttons to select the MENU item and press the UNMARKED button The screen will display Password Press the buttons in the following sequence within 5 seconds to enter the default password ON BACKLIGHT CAL and UNMARKED This password can be changed via a PC using Portables PC software 8 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Setting Up How to change an option To change an option use the first two keys labelled with the lt lt and gt gt sym bols to change the current selection and the third key labelled QUIT to finish changing the selection If the QUIT key is pressed and the parameter has been modified then the user is prompted with a save changes message Two keys are soft key function labelled one with YES and one with NO Press the desired button For example to configure the start up option from the configuration Menu follow the steps below DISPY ALARM ZERO PUMP lt lt gt gt QUIT PUMP Scroll the menu list to the left until START is selected ALARM ZERO PUMP START lt lt gt gt QUIT START Press the UNMARKED button to enter the START submenu START ZERO amp LOG lt lt gt gt QUIT Use the lt lt and gt gt butto
19. d has passed If set up for Time Weighted Average TWA alarms the Triple Plus Plus IR triggers a non resettable alarm if a short term normally 15 minute or long term 8 hour exposure level is reached Both TWA alarm types may only be reset by turning the instrument off and on again when the average exposure has fallen below threshold levels See Configuring the instrument with Portables PC software on setting these levels 2 7 Status Screens Alarm Reset The UNMARKED button has two functions to reset alarms see 3 6 above or to display a series of status screens To view the status screens press the UNMARKED button when the instrument is not in an alarm condition The series of status screens show the following information in sequence Press the UNMARKED button to move onto the next screen and eventually back to the main instrument display of gas levels If the button is not pressed for 20 sec onds the instrument will timeout and return to the main gas reading screen The date current time and the time elapsed since instrument switch on is displayed Serial number and calibration due date is displayed Alarm 1 levels are shown for all sensors Short term exposure levels are displayed for toxic sensors Long term exposure levels are displayed for toxic sensors Currently selected user and site are displayed 2 8 Switching Off Provided the facility has not been denied with the SETTING UP function the Triple Plus Plu
20. d then 50 Volume Methane Applying 6 Volume Methane will set the pellistor into save mode so it will not be damaged by applying higher volume levels of calibration gas 4 Stop the flow of 6 Volume Methane and follow it within one or two seconds with 50 Volume Methane Avoid the introduction of air for example by using a three way valve 5 Calibrate the volume flammables channel as normal and then turn off the gas supply DO NOT purge the gas line with air 6 Remove the flow plate and check that both flammables detectors return to zero reading 7 For units calibrated with hydrocarbons other than methane the levels above should be scaled according to the relevant LEL levels TIME Selecting this will give a display of the form CURRENT TIME 21 48 00 HOUR MINUTE QUIT Press the key labelled HOUR to increment the hours and the key labelled MINUTE to increment the minutes until the correct current time is displayed CROWCON 13 Gas Detection You Can Trust Setting Up Triple Plus and Triple Plus IR OFF Two options OFF ENABLED OFF DISABLED Determines whether the instru ment can be switched off MUTE If the mute function is enabled which can only be done via Portables see section 3 5 PC interface and software then a MUTE option will appear within the menu system This option can be selected as either SILENT ALARMS or AUDIBLE ALARMS If SILENT ALARMS is selected then the word MUTED will flash on the main dis
21. dicated by the letters TWA flashing with the sensor name The gas value displayed will be the current long term exposure level Non toxic gas sensors will display their normal gas level Peak hold This options affects the displayed gas value for all sensors and is indicated by the letters pk flashing with the sensor name The highest gas level that has been read since instrument switch on will be displayed or in the case of oxygen the lowest level read The peak that has been retained may be reset to the current gas CROWCON 5 Gas Detection You Can Trust Operation Triple Plus and Triple Plus IR level by pressing the UNMARKED button The peak gas level will then be displayed again from then on In addition to the messages described above if alarms are muted the message MUTED will flash with the sensor name and units 2 3 Overrange If a flammable sensor s signal is out of range then the instrument may be configured via a PC and the Portables PC software to either flash the relevant numbers on the display or to display a message of the form SENSOR FAILURE and the name of the failed sensor The alarm sounder will activate This type of error could indicate a high gas level or sensor failure Calibration should be checked after such a warning 2 4 Cautions Sensors may be adversely affected by exposure to silicones lead compounds high levels of hydrogen sulphide and chlorine and some industrial solvents A
22. e battery pack ensure you are in a safe non hazardous area Unscrew the tamperproof screws which retain the battery hatch using a 2 mm Hex key Remove the hatch and tip the battery pack out Disconnect the spade terminals When refitting be sure to observe the correct polarity red wire to positive black to negative Replace the battery pack and hatch and secure with the tamperproof screw Crowcon recommends fitting the new Li ion battery pack when replacing a lead acid battery that has reached the end of its useful life Alternative batteries other than the Crowcon Li ion battery pack should not be used because they will invalidate approvals and may impair performance 22 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Maintenance and Calibration 7 3 Fitting the Lithium ion Battery Pack The Li ion battery pack may be used with certified instruments Approval is pending for the use of the Li ion battery pack with UL certified instruments To change the Lead acid battery pack to a Li ion battery ensure you are in a safe non hazardous area Unscrew the tamperproof screws and remove the hatch and battery as in Section 7 2 Remove the Li ion pack from the box connect the terminals as indicated on the new pack and place the bottom edge of the hatch into the base unit Close the hatch and fasten the screws N B ENSURE THE NEW PACK IS CHARGED FOR AT LEAST 12 HOURS PRIOR TO FIRST USE 7 4 R
23. ed instrument will draw current at the standard rate indicated by the LED glowing red As the battery approaches full charge the current drops to the trickle rate and the LED switches to green An instrument may be left at the trickle charge rate indefinitely or removed for use The chargers are supplied with a mains lead for connection to a 110 240 V 50 60 Hz supply Connect brown live blue neutral green yellow earth For DC charging 12 40 V an optional lead is available incorporating a plug for a vehicle cigarette lighter socket An optional interconnecting mains lead joins charger interface units together for connection to a single outlet 18 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Battery Charging If the instrument is to remain unused for a length of time it should be charged prior to the period of storage Due to the safety circuitry included within the Lithium ion battery pack the battery will discharge when the unit is not in use Always charge fully before use or store on charge CROWCON 19 Gas Detection You Can Trust Data Logging Triple Plus and Triple Plus IR V Data Logging The data logging aspect of the instrument can be configured to be active when the instrument is switched on by the START menu option Additionally the instrument records events such as alarms and an event will cause the logger to be switched on Data is logged for all gas chann
24. elationship between concen tration and response of the detector is not linear An infrared sensor should therefore always be calibrated for the species to be determined or a suitable target If other specific hydrocarbon species need to be detected please consult Crowcon as to the optimum calibration The infrared sensor in Triple Plus IR can be supplied on one of two configura tions as follows e Single range LEL In this case the Triple Plus IR can have up to three other sensors from the standard range of toxic and oxygen sensor modules available e Dual range LEL and volume In this case the sensor module has a second ribbon connector on a side piece of PCB and therefore takes up two display positions on Triple Plus IR This allows only two other sensor modules from the toxic and oxygen range to be used A dual range sensor will always have both ranges calibrated for the same species and operates in an auto ranging mode displaying in LEL terms with no numerical display for volume until the level of gas exceeds 100 LEL and in volume terms with no numerical value for LEL when the level of gas is above 100 LEL Note also the lower range will always display as LEL even if the gas is detected in an inert background gas where strictly speaking the mixture cannot be explosive The display indicates the equivalent LEL level if the gas were in an air background Note It is not possible to have a pellistor or thermal conductivity sens
25. els at a rate set by the log period which is con figurable via Portables PC software For each channel the maximum level mini mum in the case of oxygen is recorded since the last reading was taken and stored in the log Thus even if the log period is set to 10 minutes for example and a brief gas hazard occurs it will not be missed by the logger Logged data is retained in battery backed memory when the instrument is turned off When the memory is filled the new data over writes the oldest A log is extracted from the instrument and saved as a file on the computer via the Portables PC software LogManager is then used to inspect the log See the separate documentation for these two pieces of software for additional details The instrument notes the following events in the log along with a note of the channel the event is associated with if appropriate Log switched on either from front panel or by event trigger Log switch off either front panel or by instrument switch off Sensor channel overrange Instantaneous alarm 1 Instantaneous alarm 2 Instantaneous alarm 3 Short term exposure alarm Long term exposure alarm User triggered event from the instrument front panel Change of user from the front panel Change of site from the front panel The instrument is capable of storing just over 6300 data logs for all channels Events take the space of 2 logs 20 CROWCON Gas Detection You Can Trust Triple Plus and
26. eplacing a sensor module Disconnect the battery pack Unclip the shoulder strap and remove the two upper case fixings with a 3 mm Hex key Lift the lid assembly from the base and lay the instrument on its side lid face down Remove the two lower case fixings and then two more next to the D rings Then split the halves and lay them alongside the lid All circuit boards should now be facing up Identify the sensor module to be replaced and disconnect the flexible pcb from it by lifting the shroud from the header and pulling gently on the tail Remove the two Pozi drive screws and the old sensor module Remove the old gasket membrane assembly Fit the new components accord ingto a reverse of the above procedure ensuring that the shroud is pushed home over the header to grip the flexible pcb tail securely Fit the lower case shells together ensuring that the strap pins and captive nuts are located in the recesses of the side flanges and that the gasket strip has not been displaced WARNING if the nuts are slightly rotated and not sitting deep in the recesses the case halves will be wedged apart allowing moisture to enter the instrument Taking care not to trap any of the leads push the lid back onto the base and secure with the fasteners Reconnect the battery pack Triple Plus Plus IR sensor modules are supplied from the Crowcon factory and will identify themselves to the instrument when it is switched on New sensor modules require calibratio
27. ete 32 Technical update February 2010 Significant changes have been made to sections Quick Start Guide Il IV VI VII IX Appendix 1 since last version Issue 2 Experienced users should review these sections for an update on functionality Triple Plus and Triple Plus IR Quickstart Guide Quickstart Guide Prior to first use the LIBRA Lithium ion battery pack requires a full 12 hour charge cycle This will ensure the life of the new battery Press ON press the UNMARKED button to reset alarm green LED flashes and display will show gas levels or display MONITORING if the instrument is in the GO NO GO mode see SETTING UP In Alarm condition Alarm sounds and the red LEDs flash Press the UNMARKED button to silence the sounder the red LED will continue to flash if gas is present Gas display mode flashes next the hazardous gas name GO NO GO mode display reads GAS HAZARD EVACUATE AREA Instantaneous and TWA alarms Alarm is triggered when the instantane ous threshold is reached Press the UNMARKED button to silence the sound er the red LEDs will continue to flash if gas is present The sounder will be triggered again if a new alarm threshold is reached Low battery Alarm will sound when battery is low Press user accept Reset Alarm Press the UNMARKED button Turn On Backlight Press the BACKLIGHT button It stays on for 30 minutes unless the button is pressed again
28. ion battery pack the unit will turn off and start charg ing If performing calibration or maintenance work turn the instrument on when fitted into the charger or back on again if switched off when placed in the charger 7 1 Recalibrating Read about the CALIBRATE option in SETTING UP CALIB and the CALIBRATE functions in Portables PC software as either method may be used to adjust gain values but a knowledge of both is helpful Zero the unit in clean air Locate the aspirator flowhead under the ledge above the sensor panel and secure with the half turn fasteners Starting with flammable gases and moving on to toxic connect the appropriate cylinder of test gas to the inlet of the flow head via a flow meter Direction of flow is marked on the flowhead Adjust the control valve on the flow meter to achieve a flowrate of 0 5 litre min Wait until the reading has stabilised on the Triple Plus Plus IR display before programming in the new level Now shut off the valve and disconnect the supply of test gas Aspirate fresh air through the flowhead using the rubber bulb until the reading has returned to zero If there are signs of cross sensitivity between two or more sensors wait for all readings to settle before proceeding with calibration of other channels For units with both LEL pellistor and Volume flammable sensors see note at end of CALIB Section 3 2 p13 7 2 Replacing the Lead Acid Battery Pack To change th
29. ion settings may ONLY be set via Portables PC The function of these parameters is explained here See the Portables PC documen tation for details of how these parameters are accessed and modified Note that Portables PC also allows the parameters configurable via the front panel to be configured via a CONFIDENCE BLIP The green LED will always flash once every three seconds This option determines if an audible blip is also made LOG PERIOD Allows setting of the data logging period anywhere from 1 sec ond to 24 hours See section on data logging for description S T E L TIME The short term exposure limit S T E L averaging period set between 5 and 15 minutes 15 minutes is the UK standard SYSTEM TIME AND DATE Instrument time and date CALIBRATION DUE Sets the date at which the Calibration due warning mes sage will appear at instrument start up USER AND SITE STRINGS The actual text associated with the 10 user and site names may be set via Portables PC The information once set appears in the log menu VOLUME RANGE Set the volume of gas used by flammable volume channels to turn off flammable LEL channels for Autoranging units only PASSWORD Allows the menu password to be changed from the default of 1234 CHANNEL AND UNITS This is the text used for the gas readings display It may be set via Portables PC FLAMMABLE CORRECTION DATA The name associated with a correction fac 16 CROWCON Gas Detection
30. lammable gases using a catalytic flammable sensor which operates in the presence of oxygen It is advisable to check the oxygen concentration as well as the flammable gas concentration before enter ing a confined space Oxygen levels below 10 will reduce a flammable gas reading The performance of catalytic sensors be permanently degraded if exposed to silicones sulphur containing gases such as HS lead or chlorine compounds including chlorinated hydrocarbons gt CROWCON 31 Gas Detection You Can Trust Triple Plus and Triple Plus IR Appendix 5 Menu Map IX Append suoynq ein suIw sinoy youms 0 e qesip a qeua 330 uo s emje og oz 01 se uondo 1uBipioeq 128 95 1 5 ejduj ul Jeadde seop UOIJDUN 5141 602 01195 oq jeuueyo sjauueyo 013Z 0 esn 0832 Nad ZH TOL HLA EHN 10128 5 ININV T3 eigeuogies ui pajqeua 10sues sey JI 104 swaeje aiqipne 129196 10 1U9JIS 129 oS 1AAAT ALN senjeA senjeA sonje YML pue 2 sanjen yead yjo uo
31. librated as per the gas they really are and not as per the gas selected as a flammable correction factor For example if there is CH4 methane sensor an instrument and a flammable correction facor is applied so that the instrument reads PRO propane then the sensor would be selected as the CH4 and not PRO in the CALIB menu and methane used to calibrate the sensor 12 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Setting Up IMPORTANT SAFETY NOTICE All units fitted with sensors to measure both LEL AND Volume Methane other hydrocarbons or flammables To avoid potential damage to the pellistor sensor used for measuring LEL methane when calibrating the IR or thermal conductivity sensor used for meas uring volume methane the following precautions must be observed Failure to follow this guidance may permanently damage the pellistor sensor resulting in unsafe erroneous readings and the need to replace the sensor If the guide lines are followed the sensor should provide long and reliable service Special Calibration Precautions 1 Perform a Zero on the unit in clean mobile air as normal 2 Apply 2 5 Volume Methane gas using the flow plate and calibrate the LEL flammables sensor to either 50 0 LEL areas covered by 15010156 or 56 8 LEL areas covered by ATEX IEC 60079 29 2007 3 Prepare to apply two samples of methane gas to the unit in quick succession first 6 Volume Methane an
32. ment to be used in either pumped or diffu sion monitoring mode See the SETTING UP section above for details on how this can be configured Additionally it is possible to control the pump via the programmable button as described in section 3 2 Configuration Options If the STOP pump mode is selected the pump will not run and the aspirator flow head and tubing must be removed to enable gas to enter the sensors by diffusion If the GO pump mode is selected the pump will now run and the aspirator flow head should now be fitted Ensure that flexible tubing connects between the pump inlet nozzle on the side of the instrument and the outlet BULB side of the flow plate The sample tube should be connected to the INLET side of the flowhead The pump mode is remembered while the instrument is switched off On increasing the length of the sample tube the response time will be affected and some gases may be absorbed e g chlorine Add approximately 1 5 sec onds per metre of sample tube for gas to reach the instrument 4 mm I D tube Be careful not to suck water or dust into the instrument and avoid kinking the sample tube If the flow is blocked for any reason the pump is automatically stopped and the warning message PUMP FLOW FAIL appears on the display Attend to the blockage and then restart the pump by pressing the right hand button The Crowcon Water Trap may be used when there is the danger of water ingress The pump draws power f
33. n when fitted to a new instrument If any further maintenance is required the instrument should be returned to Crowcon or a Crowcon Service Agent 7 5 Back up memory Crowcon recommend that an instrument is turned on for at least 2 hours each month to retain back up memory gt CROWCON 23 Gas Detection You Can Trust Limitations of Use Triple Plus and Triple Plus IR Limitations of Use LONG TERM STORAGE LIMITS OPERATING LIMITS min max min max TEMPERATURE 0 C 20 C 10 C 50 PRESSURE 900 mbar 1100 mbar 900 mbar 3 bar HUMIDITY 15 RH 90 RH 20 RH 90 RH non condensing INGRESS PROTECTION 65 24 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Accessories and spares IX Accessories and spares Accessories list Crowcon Description part number Carrying case and belt 01297 Aspirator probe 1 metre long 01097 Extra aspirator hose to extend normal 2 metre length 1 04032 Aspirator and pouch 01685 In line filter water trap assembly FIL29001 Computer interface lead 9 way C01327 Charging lead for vehicle cigarette lighter socket C01296 Baffle plate to protect sensor apertures C01325 Charger 12 40VDC no power pack C01546 Charger and UK 230V power pack C01547 Charger and EU 230V power pack C01548 Charger and US 110V power pack C01549 Charger Interface Il UK C01436 Charger Interface Il USA C01437 Charger Interf
34. ns to scroll through options Section 3 2 Press QUIT to select option and quit menu Save the changes YES NO Press the first button to save the change and move the menu back up a level and the last key to leave the selection as it was unchanged and move back up a level The menu system has timeouts on all operations If no keys are pressed within about 20 seconds the system steps back one level at a time Changes that have been accepted by pressing YES to the save changes prompt are retained Any change that has not been explicitly saved will be lost The following parameters are modifiable via the instrument front panel but tons and are displayed on the screen in the following order ZERO FLAMM LEVEL PUMP CALIB DISPY ALARM START BUTTN TIME OFF LIGHT CROWCON 9 Gas Detection You Can Trust Setting Up Triple Plus and Triple Plus IR 3 2 Configuration Options LIGHT Configures the backlight timeout option to be NEVER TIMEOUT 10 MINS 20 MINS 30 MINS or ALWAYS ON Whatever option is selected the backlight will always come on when the instrument is in alarm DISPY Display mode Configures the instrument display mode with one of the follow ing options Normal Average Off TWA Toxic Peak Hold These are described in the section Operation Note the action of the BUTTN option below ALARM Alarm mode User can select one of the following ALL ACTIVE TWA ONLY INSTANT Within this option the instr
35. or in a Triple Plus IR CROWCON 3 Gas Detection You Can Trust Operation Triple Plus and Triple Plus IR Il Operation 2 1 Switch On Press the ON button to switch on the Triple Plus Plus IR The instrument will display the message Crowcon Triple Plus Plus IR and the serial number The unit will test the red alarm LED sounder and alarm beacons Press the UNMARKED button to silence the alarm Note if the unit is in the presence of a hazardous gas the alarm will continue to operate If alarms are configured to mute see MUTE in section 3 2 Configuration Options then the alarm will not sound and the alarm LED not flash during the switch on process After a short pause the display will change to Testing System and display the current battery voltage If the current date is past a preset calibration due date then the instrument will display Calibration Due See section 3 2 for configuration options If there are different sensor modules in the instrument compared to when it was last used possibly indicating sensor failure the mes sage Sensors changed will be displayed If the instrument s configuration has been lost or corrupted then the message Loading default data will be displayed With all three of these error warning messages the condition must be accepted by pressing the UNMARKED button indicated on the display with the word CONTINUE above it The instrument can alarm on instantaneous gas levels
36. play with the gas units and name no audible alarm will sound when an alarm is triggered nor will the alarm LED will flash There will be a visual indication of the alarm condition on the instrument s display Note this option will be ignored when the instrument s display mode is selected as OFF LEVEL This option displays and allows modification of alarm 1 for flammable LEL chan nels Use the two keys labelled on the display as UP and DOWN to adjust this alarm level between to the required value Note Crowcon does not generally recommend that alarm levels be set to a level that is less than 596 of the sensor s range because of the possibility of spurious alarms being triggered LOG MENU The LOG MENU acts similarly to the MENU system just described Options are START or STOP One of these two options is displayed depending on the cur rent state of the data logger Press START to turn data logging on and STOP to turn logging off USER Allows selection of a user name which is used in the data log see section 3 5 The act of changing the user is an event which is logged by the data logger SITE As user but site location 14 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Quickcal 3 3 Quickcal The instrument has the ability to perform a quick calibration of four gas chan nels CH4 CO H2S and O2 in one go The system prompts the user through the procedure Before QuickCal is initi
37. port the sensor and a small digital memory which identifies it to the processor along with cali bration data and alarm thresholds A quarter of the screen is reserved for each of a possible 4 gas channels which means that in the popular triple gas con figuration one quadrant is left blank It is often useful to know how the location of the sensor modules relates to the display When viewing the instrument from the top with the sensor grilles facing away reading the display from left to right like a book shows the location of the sensors installed from left to right along the front face The normal mode of operation is diffusion monitoring whereby the instrument constantly samples air in its immediate vicinity Display options The instrument may be configured into alternative display modes by the DISPY option see DISPY in section 3 2 Configuration Options The ON button can be programmed to switch between modes The possible display modes are Normal All gas values units and names are displayed in real time Average average gas reading since the instrument was switched on is displayed for toxic sensors This is indicated by flashing avg with the sensor name Non toxic sensors will display their normal gas level Off Display reads MONITORING whilst a safe condition is perceived and flashes GAS HAZARD and EVACUATE AREA alarm condi tion TWA Toxic This display mode only affects toxic sensors and is in
38. ppear several seconds after start up to give the sensors time to settle and will timeout without performing a zero if the YES button is not pressed within about 5 seconds LOG enables data logging at start and ZERO amp LOG enables both zero and data logging at start up Select NOTHING to disable zero and logging at start up BUTTN The left hand button can be programmed to perform various functions when the instrument is in normal gas measurement mode The options available are NOTHING TWA AVERAGE NORMAL NOTHING means all special functions on the button are disabled PUMP allows the pump to be switched off and on without having to enter the menu system to perform this action PEAK TWA TOXIC and AVERAGE are as per the DISPY functions Pressing the button when one of these options is selected will toggle the display mode between that set on the button and that set in the DISPY setting NORMAL serves a similar function If the DISPY mode has been set to some thing other than NORMAL then NORMAL allows the display mode to be tog gled from that set in the DISPY option to the normal gas display Note these display functions have no effect if the DISPY mode is set to OFF and that the instrument will always start up in the display mode set by the DISPY function If the MUTE function is enabled then a SILENT ALARMS option will also appear as one of the possible selections in the BUTTN menu This op
39. ration of the instrument which must first have been zeroed in clean air You will need Triple Plus Plus IR aspirator and a supply of Crowcon calibration gas see section 7 Maintenance and Calibration The top line now displays one of the instrument s gas channels This display will look like CALIBRATE CH4 chan 1 lt lt gt gt QUIT CAL Use the first two keys to select the required gas Press QUIT to move back up a menu level or CAL to select the gas to calibrate The display will now change to CALIBRATE CH4 0 UP DOWN QUIT CAL The actual gas reading is displayed on the top line and should go up when the relevant TEST GAS is aspirated over the sensors When the reading has stabilised use the UP and DOWN keys to make the reading match the known test gas con centration Now press CAL to actually calibrate the instrument s gain QUIT can be pressed to abandon the calibration If the instrument is calibrated it will either respond with CAL SUCCESSFUL or CAL FAILED If the calibration failed the instru ment s gain is not changed and means that either the gas concentration was not equal to the value set check both and repeat or that the sensor has deteriorated with use see section 7 Maintenance and Calibration for sensor replacement Note that when calibrating flammable sensors they will always appear in the CALIB menu as the sensor type they really are without any flammable correc tion factor applied They should also be ca
40. rom the Triple Plus Plus IR battery pack and so reduces the operating time between recharge With one flam mable sensor installed the battery life will be around 9 hours compared to 12 hours without the pump running When the instrument is being calibrated from a pressurised gas source the pump should always be switched off Please note Pumped units will drain batteries faster than those with out or those with pumps that are not used continuously CROWCON 27 Gas Detection You Can Trust Appendix 2 Default Flammable Correction Factors Triple Plus and Triple Plus IR Appendix 2 Default Flammable Correction Factors This information is for the Triple Plus model ONLY Gas Correction with Correction with 3 character name respect to methane respect to pentane Pentane 2 0 1 0 PEN Methane 1 0 0 5 CH4 Butane 1 7 0 9 BUT Propane 1 4 0 7 PRO Hydrogen 0 9 0 5 H2 Toluene 2 7 1 4 Ethanol 1 6 0 8 Petrol 2 5 1 3 Vapour Ammonia 0 7 0 4 Methanol 1 3 0 7 LPG 1 4 0 7 Propanol 2 0 1 0 Note that these correction factors apply to VQ32 pellistor sensor modules The factors only apply to the Triple Plus and may differ if an alternate sensor mod ule is fitted to the instrument 28 gt CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Appendix 3 Front Panel Text Items Appendix 3 Front Panel Text Items This Appendix lists all
41. rwise the message Calibration failed with the list of gases that failed the calibration displayed When performing a calibration with a gas from a pressurised source the instru ment s pump if present should always be turned off 3 4 Pellistor saving Triple Plus only To avoid the pellistor sensor being damaged by exposure to excessive levels of flammable gas it is protected automatically Pellistor saving may be triggered in two ways On dual range flammable instruments i e those with a pellistor measuring LEL and a thermal conductivity block measuring 96 volume a per centage volume of gas may be specified at which the pellistor will be switched off This percentage is configurable by computer using the Portables PC soft ware and is 596 by default see below gt CROWCON 15 Gas Detection You Can Trust Pellistor saving Triple Plus and Triple Plus IR Additionally a pellistor will switch itself off if it reaches a reading of 105 LEL or more this action will happen irrespective of whether a volume sensor is also fitted If a pellistor switches itself off then it will stay off until it is manually switched on This happens by pressing the unmarked button The pellistor will warm up for 5 seconds before the pellistor channel will read Pellistor saving is indicated on the display by the gas level being blank for the flammable block 3 5 Configuring The Instrument With Portables PC The following configurat
42. s may be switched off by pressing the ON button and the UNMARKED button simultaneously and holding them down for about half a second This prevents accidental switch off through knocking the keypad CROWCON 7 Gas Detection You Can Trust Setting Up Triple Plus and Triple Plus IR Setting Up The Triple Plus Plus IR has been designed to display as much or as little infor mation to the user as is required by the controller of the equipment On the one hand it is a four channel measuring instrument with continuous readout on the other a basic alarm only detector with status display and no way of switching it off This section describes how to tailor the instrument to the application via the front panel buttons The section on Configuring the instrument with Portables PC software details other adjustments that may be made to the instrument 3 1 Using the Menu system To access the SETUP menu press CAL button The screen will display the following MENU EVENT LOG gt gt QUIT LOG The four buttons have above them a symbol or word these are the soft key functions currently assigned to that particular key Use the ON and BACKLIGHT buttons to scroll left and right the CAL button to quit the menu system and the UNMARKED button to select a menu option View the road map on page 31 for details of Triple Plus configuration menu system The options available are MENU This selects the configur
43. tion allows the programmable button to toggle the MUTE feature between SILENT ALARMS and AUDIBLE ALARMS Note that when SILENT ALARMS is selected no audible siren will sound when the instrument is in alarm nor will the alarm light flash There will be a visual indication of the alarm condition on the instrument s display When the programmable button is pressed the instrument will issue a double bleep sound as an audible confirmation that a feature has been selected or de selected FLAMM Triple Plus only This selects the flammable gas correction to be used for flammable pellistor sensors It may be set to NO CORRECTION or to one of the gases defined in the flammable correction table If a gas is selected then this will change the name on the display and use the selected correction factor for pellistor sensor gt CROWCON 11 Gas Detection You Can Trust Setting Up Triple Plus and Triple Plus IR modules The exact list of gases and their corrections are configurable via a PC using Portables PC software The default of gas correction factors for flammable gases with respect to methane and pentane are listed in Appendix 2 Note if no table has been downloaded into the instrument then no correction factor can be selected the only option is NO CORRECTION CALIB When a calibration is being performed replace the integral flow plate with the calibration flow plate so the gas is not being sampled by the pump This allows re calib
44. tion items Text Description Options START Start data logging STOP Stop data logging SITE Select site Site 1 Site 2 Or string programmed via Portables PC USER Select user User 1 User 2 Or string programmed via Portables PC This option is only present if the logger is currently stopped This option is only present if the logger is currently on 30 CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Appendix 4 Sensor Limitations Appendix 4 Sensor Limitations The instrument is not suitable for use in ambient temperatures above 50 C and electrochemical toxic gas sensors may be degraded at these temperatures Water should not be allowed to collect on the sensors as this may impede gas diffusion Use with care in wet or humid environments where water may con dense on the sensors and check response after use Persistent exposure to high levels of toxic gas can shorten the life of toxic sen sors Toxic sensors may also be cross sensitive to gases other than their specific target gas and hence the presence of other gases may cause the sensor to respond If unsure contact Crowcon or your local agent Use of high power radio transmitters in close proximity to the instrument may exceed RFI immunity levels and cause erroneous indications If such problems are experienced remove antennae to a reasonable distance from the instru ment e g 30 cm Standard Triple Plus units detect f
45. ument may be set up to acknowledge different toxic gas alarm types Instantaneous mode INST INSTANT sets the instrument to alarm as soon as threshold toxic gas level is reached TWA mode will cause the instrument to ignore temporary excursions above instantaneous alarm thresholds but to go into alarm instead when the SHORT TERM or LONG TERM exposure levels have been reached ALL ACTIVE enables both TWA and instantaneous alarm types but allows the user to silence instan taneous alarms see section 2 Operation ZERO When this option is selected the instrument will give the prompt ZERO ALL Only if you are sure that the instrument is in clean air and all sensors have set tled down to a steady output should YES be pressed The Triple Plus Plus IR then calculates offset correction and gain factors necessary to make toxic and flammable gas channels read zero and oxygen channels read 20 9 Following a successful zeroing there is the option to END the set up and return to moni toring or to CONT to continue with setting up PUMP Turns the pump on and off Options are GO and STOP START Selects functions to be enabled at start up instrument switch on Options are NOTHING ZERO LOG ZERO amp LOG 10 gt CROWCON Gas Detection You Can Trust Triple Plus and Triple Plus IR Setting Up ZERO enables the option of zeroing the sensors at start as per the zero all option above the prompt to zero the sensor will a

Triple Plus+ Triple Plus+ IR User Manual - Ex-Ox-Tox

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