GAS-ALERT PLUS - Can-Am Instruments Ltd.
Contents
1. 2 volts on the voltmeter in clean air 3 Prior to calibration adjust all 4 time delay pots to 0 fully counter clockwise The delay adjust pots are in a group of 4 located on the top left edge of the Gas Alert Max board 4 SETTING THE LOW ALARM Setup the Enmet calibration kit as per the Enmet calibration kit drawing see fig 1 0 You will need a gas canister containing the gas concentration of the low alarm level i e if the low alarm is to be set at 35 PPM Carbon Monoxide then the canister should contain 35 HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 CREATE DATE REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 PPM Carbon Monoxide Attach the calibration cup over the Gas Alert Plus integral sensor and adjust the gas flowrate to about 0 75 1 SCFH Note the use of the voltmeter is optional but is useful to determine the length of the calibration time The sensor requires roughly 1 to 2 minutes to stabilize or until the voltage drop stabilizes 5 Locate the Low Alarm adjustment pot labeled L in drawing 972300 It is located on the top edge of the Gas Alert Plus board 6 Also locate the Low Alarm indicator LED Yellow which is below the adjustment pots After the sensor has stabilized if the Low Alarm LED is already lit then adjust the Low Alarm pot clockwise until the alarm LED just goes off then adjust it counterclockwis2. 6 5 Ib ENVIRONMENTAL SPECIFICATIONS Operating Temp 20 to 60 Deg C Relative Humidity 9096 max with no condensation 5 0 INSTALLATION 5 1 MECHANICAL INSTALLATION See Drawing 972307 5 2 ELECTRICAL HOOKUP See drawing 972300 5 2 1 POWER The standard power input is 24 VDC If this is being used then locate the power supply connector at the bottom left of the Gas Alert Plus board and connect the 24 VDC as shown on drawing 972300 The connector is a 2 conductor mating pair arrangement The connector may be unplugged for ease of wiring If 115 or 220 VAC power is to be used then locate the separate VAC input power supply and connect the Line Neutral and GND connections as labeled on the back panel 5 2 2 REMOTE SENSOR The Gas Alert Plus may have one integral MOS sensor and remote MOS EC Gold sensors The remote MOS sensor is connected via a 4 conductor 16 18 gauge shielded wire cable that carries power 2 conductors and a common remote signal pair The Electrochemical EC Gold Series is connected via a 3 conductor 16 18 gauge shielded wire See dwg 20010201 for more details Locate the Remote Sensor connector on the left edge of the Gas Alert Plus board 5 2 3 RELAYS Three DPDT 250 VAC 5A contact relays are provided for High Alarm Low Alarm and Sensor Fault These relays are common to the integral sensor and the remote sensors i e if the integral sensor or the remote sensor is in low alarm then the Low Alarm relay and LED
3. are activated Sensor Fault If any MOS sensor integral or remote or the Carbon Monoxide EC Gold Series is removed then the Sensor Fault relay and LED are activated NOTE Each relay may be set as Fail Safe normally energized and de energized on alarm condition or HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 non fail safe normally de energized and energized on alarm condition The connections are as shown on drawing 972300 5 2 4 BUILDING AUTOMATION SYSTEM BAS CONNECTION The Gas Alert Plus provides external High and Low Alarm status signals 24V when in alarm 0 V when not for connection to a Building Automation System BAS The signals are non isolated and are referenced to the provided 24V power supply ground The connection is located on the right edge of the Gas Alert Max board as shown on drawing 972300 5 2 5 AUDIBLE ALARM Optional The Audible Alarm connector 2 conductor is located on the right edge of the Gas Alert Plus board The connection is either to a Horn Buzzer on the side panel typical OR connected to a remote horn buzzer both optional The output is 24V 50 mA maximum current Some horns buzzers are polarity sensitive i e make sure the output is connected to the terminal of the horn 6 0 CALIBRATION AND SETUP 6 1 CALI
4. is active Drive capability The status signals are meant to be connected to a BAS PLC and are not intended to drive any appreciable load A 330 Ohm resistor protects each output Thus for a 500 Ohm load the output voltage is 14 5V and for a 1000 Ohm load the output voltage is 18 0V AUDIBLE ALARM Optional Function Activated on High Alarm After High Alarm Delay Drive capability 24V 4 50 mA max If greater drive is required use a slave relay Silencer Push button silencer auto reset Connection for remote silencer push button optional Time Delay 0 20 minutes Delay On In addition to High Alarm Delay On DIAGNOSTICS HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 CREATE DATE REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 Push to Test push button Tests by forcing a Sensor Fault on the internal sensor Alarm lights relays and BAS status signals are tested Note the time delay settings are still active during test Adjust them to 0 minutes prior to test if the time delays are not to be tested POWER 115 VAC 5 A when supplied with a power supply 220 VAC available Internal sensor only 24 VDC 0 5A max Standard Remote Sensor System 24 VDC 0 5A 0 25A per Remote MOS Sensor 100mA per Electrochemical EC Gold Sensor MECHANICAL SPECIFICATIONS Enclosure Nema 4X Epoxy Coated Steel Dimensions 8 X8 X5 Weight
5. same wire run Correlation gases and specialty calibrations are available Specify calibration at time of order YOUR REPRESENTATIVE Enmet Canada Ltd Oakville Toronto Canada L6H 6C9 Tel 441 905 829 4700 1 800 367 4706 Canada Fax 1 905 829 4701 enmet arjayeng com www EnmetG asD etection com 10 99 gas alert MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 CREATE DATE REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 TABLE OF CONTENTS 1 0 THEORY OF OPERATION roe etre CE Enan Le eere erre e TELE d ee tree deed 3 2 0 UNPA RING oer Ote RR ARRIERE 3 3 0 SENSOR LOCATION ertet emer E eo er Een t e E ones vert 3 4 0 INSTRUMENT OVERVIEW eterne tote 4 4 1 EEAXTURES ie iei e A eei e iet ese EU 4 4 2 DESCRIPTION nauenean inier EE RE Pee 4 4 3 SPEGIEIGATIONS teet tte e RR eate tne oerte 4 5 0 INSTALLATION denote tite te tete aiat hae 5 5 1 MECHANICAL INSTALLATION eren enne 5 22 ELECTRICAL HOOKUP tiet diee iere teer 5 2 1 POWER seni eei rete ree e e e ELE 5 522 REMOTE SENSOR incerti rt eee et or e P Re re deeds 5 5 23 5 nete ete RE ERR Te 5 524 BUILDING AUTOMATION SYSTEM BAS 6 5 2 5 AUDIBLE ALARM Optional sse 6 6 0 CALIBR
6. ATION AND SETUD 5 nor nied ide ee ii eerie ORG RR 6 6 1 CALIBRATION OF INTEGRAL MOS SENSOR esee 6 6 2 1 CALIBRATING THE INTEGRAL SENSOR seen 6 6 2 2 SETTING THE TIME DELAY seen 7 6 23 COMPLETION acute c Dd at d atr EORR 8 HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 1 0 THEORY OF OPERATION The Gas Alert Plus is a single zone monitor with two alarm points which employs Metallic Oxide Semiconductor RLU MOS Series sensing elements and or Electrochemical sensors EC Gold Series In the presence of a gas a voltage output is produced Depending on the specified gas level this output enables the activation of alarms relays etc at desired levels The MOS technology is also referred to as Broad Range sensing because the sensor will respond to a broad range of gases The Electrochemical sensors EC Gold Series may be referred to wet chem or near specific The sensor selected for this unit has been determined to be the most suitable for your target gas The unit and sensor have been calibrated to Specific alarm levels using the target gas for this application i e carbon monoxide Other toxic or combustible gases may also cause the sensor to r
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8. BRATION OF INTEGRAL MOS SENSOR The Gas Alert Plus may have up to 2 RLU MOS sensors all remote or one integral and the rest remote or up to 5 Electrochemical EC GOLD Series sensors The integral sensor may be only of the MOS technology See the following calibration procedures for the integral sensor If other sensors are supplied please find the additional sensor manual s required at the end of this manual 6 2 1 CALIBRATING THE INTEGRAL SENSOR NOTE If an integral sensor is not being used a resister is factory jumpered across the input terminal block J9 Verify this 1s in place and proceed to 6 2 2 Calibrating the integral sensor requires e Enmet Calibration Kit which should have calibration gas concentrations for the required High and Low alarm values e Small slot screwdriver to adjust the alarm levels e The Gas Alert Plus should be powered up for 48 hours prior to calibration to allow the sensor to stabilize A Voltmeter 1 Locate Test Point 1 named TP1 Black See drawing 972300 It is located at the bottom left of the Gas Alert Plus board Locate Test Point 2 named TP2 Red It is located roughly an inch above 1 Plug the negative lead of the voltmeter into TP1 and the positive lead to TP2 The measured voltage will be in the 1 5 5 Volt range 2 Locate the Range potentiometer labeled N on the top edge of the Gas Alert Plus board With the small adjusting screw adjust the pot to get approx 2 8 VDC
9. ENMET LTD GAS ALERT PLUS User Manual Gas Detection for Commercial and HVAC Ventilation GAS ALERT Series THE SYSTEM The GasAlet series of gas detection equipment from Arjay has been specifically designed for ventilation control of toxic and combustible gases in commercial industrial and residential H VAC installations 2 T hisseries provides a common set of control relays that are dedicated to control the fans within one area or zone For multiple fan and zoning needs the Arjay a 2 66 RLU can be used to provide one central panel or multiple as Alert systems can be used one within each zone to provide the control box adjacent to the dedicated fan The solid state sensor technology M etallic O xide Semiconductor S provides a low cost and long life approach to gas ventilation T he sensor is calibrated to atarget gas selected for the application ie carbon monoxidein parking garages j O ther toxic gases that may influence the sensor in a similar fashion such as gasoline ET and paint fumes will also initiate ventilation providing added protection from other potentially hazardous vapors G as selective sensors are available where background gases are preferred not to activate the fansin conjunction with thetarget gas see M ulti Sense Series T hreestandard models will provide you with a system that is right for your specific application TheGasAlat for single senso
10. X P E 1 32V SNOISNAWIG 33hSD32N3 5014 1441 5 9 COST 14 19111344 SI 3enst 12N3 S3HONI NI 38V SNOISNSWIC 11V CIVADSLNI 1 8 J3iDW38 SAOSNAS 2 XVW 903 04194 AlddAS S3A Ld SALON YOSN3S LNNOW YOSN3S 41314 Jj JJA03 HLIM 3015 93 03 1 1 0 79 0 11 0 ONISIA 108 6 DMC 435 IWANVW INDIILLaU 3 43220 WNOILdO 3903 IALINDIOV 437704 WNOILdO 13004 1531 OL HSAd PATddNS AIMO WNOILdO CONILNNOW 2114 34144 WANYW 3183 1331 90 2 01499 95 03 A3IAS3AU W31SAS 111 VIVNVO LAWNS 193CU8ld SNOISIAZY evfowo A 32 3115 01 HShd 03409 beo T 1 31 131103 ONISNOH SUSN3S 2143 39 01 C39NVHI 2 1 31 100 SUOLOINNOD 738 TW NO SONILWS anoo 03009 eow v 301519 A8 q3riddns SLOVINOD ALTI CIWNOILd D gt CIWNOTLd 0 337208 3115 01 HSfd CIWNOILd DD 1440 1 134 1440 WAW TH WaT 07 Cle mue T3NVd NI 13923 1 1 913 ATTI HDIH 1 41 ao Wav lV 1 WOIdAL WN SG rv SI SHOOT WNIWAAL 39h SYOLISNNOOD 214 119 NO SONILVA 3N YOSN3S T C30 3IHS JAIA 334413 OAV 81 91 3418 07 A 130 3IHS JAIA 434413 D
11. e until the LED just comes on plus 10 degrees If the LED is already off adjust the pot counterclockwise until the LED just goes on plus 10 degrees 7 Repeat steps 4 6 for the High Alarm using the high level calibration gas but in this case use the pot marked to adjust the alarm and the leftmost RED LED for the High Alarm indication See 6 2 3 THE COMPONENTS IN YOUR KIT BUBBLER SENSOR CAP TUBING Humidifies the gas through Fits snugly over sensor to block tap water fill to mark note eq uu arrow direction oul air quring REGULATOR N Allows a regulated gas flow 1 from the canister Replacement canisters an parts available from your TUBING nearest representative GAS CANISTER Calibration gas Disposable ROTOMETER after completely empty Indicates gas flow rate to sensor regulate to 1 0 SCFH Figure 1 0 6 2 2 SETTING THE TIME DELAY RELAYS 1 SETTING THE ALARM DELAYS The High Alarm Delay On is the leftmost pot on the top edge of the Gas Alert board while the Delay Off is the 2 from the left On delay means relay state will change after X minutes after concentration level reaches Off delay means relay state will stay on X minutes after concentration levels are back to normal Locate the Low Alarm delay pots which on the top edge of the Gas Alert Plus board and are the 3 and 4 pots from the left edge See drawing 972300 for
12. erent molecular structures have different densities some are heavier than air and concentrate at the bottom of a space and some will rise The following is a general guide For assistance in sensor location consult your Enmet Representative Carbon Monoxide same as air place about 4 6 above finished floor Methane lighter than air place near ceiling Ammonia lighter than air place near ceiling Propane heavier than air place about 2 above finished floor 25 heavier than air place about 2 above finished floor Freon heavier than air place about 2 above finished floor NOTE Place sensors in a location that is easily accessible for calibration and testing Mount so the sensors are HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 CREATE DATE REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 facing downward to avoid dust or debris collection on the sensor 4 0 INSTRUMENT OVERVIEW 41 FEATURES e Supports one integral MOS sensor and up to 1 Enmet Remote MOS RLU Sensors or 2 Enmet Remote MOS RLU Sensors or 5 Remote EC Gold Series Sensors DPDT 250 5A relay contacts for High Low and Sensor Fault alarms Adjustable independent 0 20 minute time delay to on and delay to off for High and Low alarms Independent Fail Safe setting for High and Low alarms Board level Audible alarm output with silencer Remote audible alarm amp silencer push button optio
13. espond and alarm the unit The sensors should be installed in areas where influencing background gases are not constantly present Your Enmet gas detector is the state of the art in gas detection but like any other part of your ventilation system it requires periodic maintenance and calibration The MOS sensors and the Carbon Monoxide EC Gold used in your new gas detector will have a normal operating life of 3 to 5 years under ambient conditions The other EC Gold Series sensors will last about 1 2 years You should consider a preventive maintenance schedule whereby you test your system on a periodic basis to ensure its proper calibration and operation Most users have their unit tested every three to four months with test gas This is a simple procedure which will indicate any problems with your system A sensor fault is indicated for the MOS and Carbon Monoxide EC Gold Series sensor only Other electrochemical sensors are not acknowledged when their operating life has expired A test and calibration kit may be purchased from Enmet for this purpose Parts are also readily available from our facility 2 0 UNPACKING Inspect all parts of the gas detector upon receipt for any damages that may have occurred during shipping and that all parts ordered were received Contact Enmet Canada or your local representative if anything is in error or damage is suspected 3 0 SENSOR LOCATION Gases of diff
14. nal Adjustable time delay for Audible Alarm delay starts after High alarm Board level Push to Test button Remote Push to Test push button optional Additional High and Low alarm outputs 24V out to Building Automation System BAS 42 DESCRIPTION The Enmet Gas Alert Plus detection systems offer the ability to monitor for a variety of gases It offers DPDT contacts for High Low and Sensor Fault alarms In addition High and Low signals are also available for connection to a Building Management System BMS High and Low alarms have independent Delay ON and Delay Off time delays adjustable from 0 20 minutes total of 4 delay adjustments 4 3 SPECIFICATIONS FUNCTION Two level alarm system High and Low Alarms plus Sensor Fault Alarm SENSOR TYPE MOS Metal Oxide Semiconductor or Electrochemical Sensor EC Gold GASES CO Propane 4 NH3 25 12 NO2 consult factory for others ALARM RELAYS Relays 3 DPDT relays for High Low and Sensor Fault Alarms Contacts 250 VAC or 30 VDC 5A Fail Safe Fail Safe non fail safe settings for all 3 relays Time Delay 0 20 minutes Independent Delay On and Delay Off for both High and Low Alarm relays total 4 delay adjustments BAS OUTPUTS Signal output High and Low Alarm status outputs 24V when alarm is active OV if not The status signals reflect the alarm condition AFTER the corresponding alarm delays i e the status signal is active while the corresponding alarm light
15. ntroller 5 amp 250 VAC DPDT Dry one for high one for low one for fault on multiple sensor units above relays are common to all sensors 0 20 minute Delay On and D elay Off for each alarm relay 0 20 minute D elay O n for audio signal Low Alarm 0 volts indicates normal 24 VD C signal indicates alarm condition High Alarm 0 volts indicates normal 24 VDC signal indicates alarm condition for BAS acknowledgement only 24 vdc 9 50 mA for optional buzzer On board audio silence optional external mounted push button Field selectable for high or low for each relay On board push button for control function test optional external mounted push button 115 VAC 50 60 H z or 24 VDC 25 amp sensor Specify at time of order 20 C to 460 C 0 to 9096 non condensing Equipment mounted in non wetted areas only Expected 3 to 5 years Recommended minimum 3 gas calibrations per year Frequency determined by application CSA cUL and UL Electrical Safety Typical G ases Typical Calibration Setpoints 2 levels sensor Carbon M onoxide ppm 25 35 50 75 100 200 Ammonia ppm 25 35 50 100 500 Al Refrigerants ppm 1000 only R 11 R 12 R 22 R 134A B1 Refrigerants ppm 30 50 only R 123 M ethane 9018 5 10 15 20 25 35 40 50 Propane ld 5 10 15 20 H ydrogen Ie 10 20 One target gas per sensor only M ultiple sensors may be calibrated to different gases along the
16. placement The Delay On is the leftmost of the group of 2 34 from the left edge Adjust the pots for the desired time delays Full scale is about 20 minutes so half way is about 10 minutes This concludes the Low Alarm setup 2 TIP Setting the delay ON for a few minutes will allow the unit to ignore spurious alarms caused by sudden clouds of gas momentarily passing over the sensor Setting the delay OFF for a determined time will keep the fans operating after the sensor has cleared to ensure remote areas from the sensor are also clear 3 SETTING THE HORN DELAY The audible alarm optional is triggered by the High Alarm The audible alarm delay is therefore in addition to the High Alarm delay The sequence is as follows when the gas concentration is higher than the high alarm setpoint for at least the high alarm Delay On HARDWARE REV SOFTWARE REV MODEL DOCUMENT TYPE DOCUMENT FILE NAME ENMET USER MANUAL REV GAS ALERT PLUS MgslPL20 doc 2 0 CREATE DATE REV DATE PRINT DATE 08 25 97 06 16 2003 06 16 2003 then the high alarm relay and indicator RED are activated At this time the audible alarm is also triggered After an additional time as set by the horn delay the audible alarm 18 turned on and continues until either the High alarm is deactivated or the silencer switch Board mounted is pressed The horn time delay also has a 0 20 minute scale The horn may thus be turned on a maximum of about 40 minutes after the sensor sen
17. r applications T he sensor can be supplied integral to the control unit or remote for detection of gases awkward spaces GAS ALERT The GasAlet Plus for dual sensor needs With one m sensor integral to the control unit and one sensor T remote this unit is ideal for loading docks and small regia rono private parking garages GAS ALERT PLUS The GasAlet ax can monitor a run of up to GED sensors in the field T his is ideal for use in larger areas C Low Aarm qo where a common alarm is sufficient without the discrete acknowledgement from a specific sensor 5 The single 4 wire run of shidded cable allows a very e 9 9 economical installation he sensors be spliced into TORT OT any point along the run GAS SALERLMAX THE RESULTS Solid State Sensor M OS Technology Single Wire Run Target Gas Calibration long life and low cost responds to multiple toxic or combustible installation economy provides easy one man field cal 5 829 4700 fax 905 829 4701 www EnmetGasD etection com M etallic xide Semiconductor O S technology with cintered filter housing for envi ronmental conditioning Diffusion sensing no pumps Plug in design LED indication at sensor and controller green normal yellow low alarm red high alarm red fault flashing at sensor steady at co
18. ses a high alarm High Alarm Delay On plus the Horn Delay On 6 2 3 COMPLETION Replace the cover on the sensor and control box Remove the flow gauge from the calibration gas Calibration is complete HARDWARE REV SOFTWARE REV 1 0 97 83 531435 13319 99 211499951 111 VIVNVO LAWNS 193CU8ld 8 v SDISN3S SDSN3S SNOISIA3Y 1 949 1 79907 03 19211 933 AS pee 151538 1X31 ONIAJTWNO 03009 toners 0738 24 06 1 2 9 0 2 S 03194 S d 0006 KSMESN3S 779 01 510 1 1 3 CWNOILdO 2G INDS DISA 151534 066 0319231059 101410 293 907 318vIO3NddV CWWNOILdO 20 01 G3IN31NI 11 Wal NI CWNDILdO 21 100 Av2 14404 14440 99 5 wa IH Wany 07 1104 wavy m IH NI CWNUILdH 100 Ave HDIH CWNDILdO 20 53 01 Ed 1311 15 839N3JIS 03 NULLO3NNUO 1831 01 HShd NOILOSNNOD wavy IH am 7130 3 30 3 30 lt 19 13034 13149 130 130 AL Wav IH 5831435 50019 10379 SVO 14379 SVD 5 35 1 03 5109 1 81 1 9 gli 906046 1 1 5 SHIAMGED 529 X 01 349 SNDISN3NIG ONILNAOW 330sD129N3 HG X 8
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