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© 2014 All rights reserved. Data subject to change without notice.

GEM-II - Operation Manual

Rev. E | 2014.10

6.3 standard enclosure Mounting Components

6.3.1 Enclosure Base

NUMBER

FEATURE

➊

Molded-in mounting bracket

➋

Conduit Entry

➌

Alternative mounting holes

6.3.2 Enclosure Top

NUMBER

FEATURE

➊

Molded-in mounting bracket

➋

Conduit Entry

➌

Alternative mounting holes




























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Содержание GEM-II

Страница 1: ...Operation Manual www critical environment com GEM IISelf Contained Gas Detector Rev E 2014 10...

Страница 2: ...Channel Controller 11 2 3 3Type D Dual Channel 12 2 3 4Type E Dual Channel 13 3 INSTRUMENT SPECIFICATIONS 13 3 1Technical Specifications 13 3 2 Standard Enclosure Dimensions 16 3 3Watertight Enclosur...

Страница 3: ...tem Installation 29 6 7 1 LowVoltage Power 29 6 7 2Wiring to Remote Sensor 30 6 7 3Voltage to Remote Sensors 30 6 7 4 Relay Connections 30 6 8 Installation Examples 31 6 8 1Type A with Internal Sensor...

Страница 4: ...the Null Zero Value 49 8 4 3 Calibrating the Span Gas 50 8 5 Calibrating Second Internal Sensor 51 8 6 Calibrating Remote Sensor 51 8 6 1 Setting Span GasValue for Remote Sensor 51 8 6 2 Calibrating...

Страница 5: ...o instructions indicated in this manual This instrument should be inspected and calibrated regularly by a qualified and trained technician For more information refer to Sections 8Calibration and 10Mai...

Страница 6: ...n any way This instrument is only to be used for purposes stated herein The manufacturer is not liable for auxiliary interfaced equipment or consequential damage Due to ongoing research development an...

Страница 7: ...as we cannot be held responsible for any damage incurred during shipping to our facility 1 4 Copyrights This manual is subject to copyright protection all rights are reserved Under international and...

Страница 8: ...the manufacturer reserves the right to make changes at any time without notice Revised copies of this manual can be obtained by contacting CETCI or visiting www critical environment com Should you de...

Страница 9: ...nce push button audible time delay field settable relay time delays and two alarm relays In either system the LED lights provide visual indication of the status of each channel Int internal sensor Ext...

Страница 10: ...M II Operation Manual Rev E 2014 10 2 3 Model Designations 2 3 1 Type A Single Channel Choices for GEM A One integral electrochemical sensor NOTES Optional LED digital display is shown in the photo Op...

Страница 11: ...M B One remote catalytic or solid state sensor One remote LPT A or LPT series analog transmitter NOTES Optional LED digital display is shown in the photo Wiring requirements 3 conductor 18 gauge to re...

Страница 12: ...state sensor Channel 2 One integral electrochemical sensor Channel1 PLUS one remote LPT A or LPT series analog transmitter Channel 2 NOTES Optional LED digital display is shown in the photo Wiring req...

Страница 13: ...PECIFICATIONS 3 1 Technical Specifications GASTYPE Carbon Monoxide CO Combustible Gases catalytic Hydrogen H2 Methane CH4 Propane C3 H8 Nitrogen Dioxide NO2 Nitric Oxide NO Oxygen O2 Refrigerants soli...

Страница 14: ...r shielded VAC four conductor shielded Circuit Analog design with microprocessor and user settable time delays accessible with DIP switches on circuit board Fuse Automatic resetting thermal INPUT OUTP...

Страница 15: ...Also known as minimum run time Low alarm relay 10 minutes High alarm relay not available 10 minutes NOTES Time delays can be changed by user Reference Section 7Operation DIP switches are still used t...

Страница 16: ...e without notice GEM II Operation Manual Rev E 2014 10 CERTIFICATION CSA Certified UL Certified 3 2 Standard Enclosure Dimensions 3 3 Watertight Enclosure Dimensions 5 25 133 mm 2 625 67 mm 6 75 172 m...

Страница 17: ...al ResponseTime 30 seconds to 90 of signal response OperatingTemperature 0 C to 50 C 32 F to 120 F Repeatability 10 of set point Life Span 2 years in air under normal conditions Nitrogen Dioxide NO2 T...

Страница 18: ...Refrigerants Type Solid state ResponseTime 120 seconds to 90 of signal response OperatingTemperature 0 C to 40 C 32 F to 104 F LongTerm Drift 5 signal loss month at ambient temperatures Repeatability...

Страница 19: ...Optional LED digital display LED Sensor Indicators Indicates Channel 1 or Channel 2 Door Latch Secures door LED Indicators Indicates Power Fail Door Screw Secures door Gas Alarm LED Indicates High and...

Страница 20: ...icators Indicates Channel 1 or Channel 2 Audible Alarm Watertight audible alarm silence push button LED Indicators Indicates Power Fail Gas Alarm LED Indicates High and Low alarm levels Silence Button...

Страница 21: ...ayout NUMBER FEATURE FUNCTION Dip Switches For access to time delays Dry Contact Relays For Low High Alarm Jumpers For calibrations other service set up functions WiringTerminal Pluggable wiring termi...

Страница 22: ...C Ground Referenced use terminals 12 13 This is now a HalfWave device in this configuration Please observe polarity The Ground referenced AC must be connected to terminal 12 J2 open Factory default FO...

Страница 23: ...otice 23 Rev E 2014 10 GEM II Operation Manual 6 1 2 Wiring Example 2 Wiring Example 2 24 VDC GND SIGNAL 120 VAC Controller GEM II Power Supply 6 1 3 Wiring Example 3 INCORRECT 24 VAC 120 VAC Wiring E...

Страница 24: ...notice GEM II Operation Manual Rev E 2014 10 6 1 4 Wiring Example 4 Wiring Example 4 24 VDC GND SIGNAL GND 24 VDC 120 VAC Controller GEM II Power Supply 6 1 5 Wiring Example 5 J2 Removed 120 VAC 24 VA...

Страница 25: ...ESTED MOUNTING HEIGHT Carbon Monoxide CO Gas engine exhaust 4 6 ft from the floor Nitric Oxide NO Diesel engine exhaust Nitrogen Dioxide NO2 Diesel engine exhaust Sulphur Dioxide SO2 All 6 from the fl...

Страница 26: ...ation Manual Rev E 2014 10 6 3 Standard Enclosure Mounting Components 6 3 1 Enclosure Base NUMBER FEATURE Molded in mounting bracket Conduit Entry Alternative mounting holes 6 3 2 Enclosure Top NUMBER...

Страница 27: ...v E 2014 10 GEM II Operation Manual 6 3 3 Enclosure Bottom NUMBER FEATURE Molded in mounting bracket Conduit Entry Alternative mounting holes 6 4 Remote Sensor Housing Catalytic or solid state sensor...

Страница 28: ...s reserved Data subject to change without notice GEM II Operation Manual Rev E 2014 10 6 5 Wiring Connections 6 5 1 Types A B and D 6 5 2 Type E Has a sticker placed over area that says SeeWiring Remo...

Страница 29: ...nnected GEMType B and type D will accommodate one remote sensor or analog transmitter To connect one remote sensor or analog transmitter to a GEM use terminals 9 10 11 and observe polarity 6 7 System...

Страница 30: ...remote analog transmitters should measure approximately 24VDC nominal This voltage is factory set at time of manufacturing If these voltages are not attained after installation the wrong gauge wire ma...

Страница 31: ...nd the length of time the gas alarms exist is dependent upon the length of time since the unit was last powered up and the state of the environment it is installed in After warm up only the green powe...

Страница 32: ...igital display 6 8 2 Type B with Remote Sensor or Analog Transmitter Standard electrical junction box must be supplied by installer Remote sensor Conduit and 3 conductor wire to remote sensor supplied...

Страница 33: ...s so the sensor should be installed 6 from the floor or near the most likley are to leak 6 8 3 Type D with One Internal One Remote Sensor GEMType D is a controller with one integral electrochemical se...

Страница 34: ...nt the controller will indicate fail condition on the front door by illumination of the red fail LED At this point both system relays will have reversed state de energized and anything connected to th...

Страница 35: ...hes then the High alarm LED will flash indicating the time delay has been activated and the high alarm relay will not de energize until the delay has timed out Once the high alarm relay has de energiz...

Страница 36: ...utput when jumper J6 is set to the resting position 1 is 4 0VDC Attach the meter leads to the two test points TP 1 TP 2 located just below the high alarm relay RLV2 on the main circuit board Set the m...

Страница 37: ...as alarm condition exists The internal audible alarm normally activates with a pulsing tone when a fault condition exists A fault condition could consist of any of the following Remote catalytic or so...

Страница 38: ...sor 7 Adjust High Gas Alarm DescendingValue 2 Internal Sensor 8 Enable Disable Current Output 2 Internal Sensor 9 Setting Span GasValue 3 External Sensor 2 Perform Zero Null Calibration 3 External Sen...

Страница 39: ...actory default alarm set points Default set points are as follows SENSOR LOW ALARM HIGH ALARM RANGE Carbon Monoxide CO 25 ppm 100 ppm 200 ppm Nitric Oxide NO 35 ppm 50 ppm 100 ppm Nitrogen Dioxide NO2...

Страница 40: ...ltage reference of 0 4VDC Reference the tables in Section 7 7TimeDelaysforRelayOperations Move the jumper on the lower jumper bank J6 from its resting position P 1 and place it on the appropriate jump...

Страница 41: ...VOLTAGE HIGH ALARM SETVOLTAGE CO 0 200 ppm 25 ppm 0 50VDC 100 ppm 2 00VDC CO 0 200 ppm 35 ppm 0 70VDC 200 ppm 4 00VDC NO2 0 10 ppm 0 7 ppm 0 28VDC 1 0 ppm 0 40VDC NO2 0 10 ppm 2 0 ppm 0 8VDC 5 0 ppm 2...

Страница 42: ...as you change them to suit your application If the GEM does not have a digital display you will require a digital volt meter set to volts DC one decimal point The following tables are a guideline to...

Страница 43: ...ual VOLT READING ATTEST POINTS cont TIME DELAY IN MINUTES cont 0 44 2 2 0 46 2 3 0 48 2 4 0 50 2 5 0 52 2 6 0 54 2 7 0 56 2 8 0 58 2 9 0 60 3 0 0 62 3 1 0 64 3 2 0 66 3 3 0 68 3 4 0 70 3 5 0 72 3 6 0...

Страница 44: ...n has been achieved use the UP or DOWN push buttons to make changes Changes can be viewed on the LED digital display if the GEM is equipped with one If the GEM is not equipped with a digital display c...

Страница 45: ...P push button will display the temperature in Celsius and the output to test points TP 1 and TP 2 is 4 0V If the DOWN push button is pressed the temperature is displayed in Fahrenheit and the output t...

Страница 46: ...The display can indicate the gas type only with no numerical value for some applications FUNCTION JUMPER SETTING Switch digital display ON Jumper J3 bridge P2 P3 Switch digital display OFF Jumper J3 b...

Страница 47: ...service person is confident of air quality and is careful do not exhale in the direction of the Oxygen sensor being serviced while span adjusting Oxygen in the breathing environment can be used as a...

Страница 48: ...s achieved at the transmitter using the procedure indicated in the operation manual provided with it Required Equipment Digital multi meter Calibration kit Calibration gases Users can order the calibr...

Страница 49: ...the sensor 8 4 Calibrating the Internal Sensor 8 4 1 Setting Span Gas Value internal sensor Step 1 Move jumper on J6 to position 2 and move jumper on J7 to position 2 The audible alarm beeps once for...

Страница 50: ...and remove the zero air or Nitrogen 8 4 3 Calibrating the Span Gas internal sensor Step 1 Attach regulator to cylinder of span gas Step 2 Insert the calibration adapter into the sensor opening in the...

Страница 51: ...r on J7 to position 2 Audible alarm beeps once for confirmation The system is now waiting for the user to set the desired value Step 2 Attach digital multi meter leads to test pointsTP 1 andTP 2 Refer...

Страница 52: ...itions and remove the zero air or Nitrogen 8 6 3 Calibrating the Span Gas remote catalytic or SS sensor Step 1 Attach regulator to cylinder of span gas Step 2 Attach flow adapter and open regulator va...

Страница 53: ...position 3 The audible will beep once for confirmation The system is now starting the zero calibration stabilization time 30 seconds Step 2 Attach digital multi meter leads to test pointsTP 1 andTP 2...

Страница 54: ...to position 3 and the jumper from J7 to position 3The audible will beep once for confirmation The system is now starting the zero calibration stabilization time 30 seconds Step 2 Attach digital multi...

Страница 55: ...tion The audible will beep twice when the calibration begins The audible beeps three times indicating the procedure is finished 2 minutes Step 4 Move jumpers from J6 J7 back to their respective restin...

Страница 56: ...CK1 9 2 Metal Protective Guard The metal protective guard is heavy duty metal protective guard to help protect against abrasive damage theft and vandalism to the transmitters This is an added prevent...

Страница 57: ...tion Manual 10 MAINTENANCE The GEM series system requires virtually no maintenance other than regular calibration of the integral and or remote sensors and ensuring that excess water or dust is not so...

Страница 58: ...58 2014 All rights reserved Data subject to change without notice GEM II Operation Manual Rev E 2014 10 NOTES...

Страница 59: ...2014 All rights reserved Data subject to change without notice 59 Rev E 2014 10 GEM II Operation Manual NOTES...

Страница 60: ...ntageWay Delta BC V4G 1M3 Canada Toll Free 1 877 940 8741 Tel 1 604 940 8741 Fax 1 604 940 8745 www critical environment com 2014 Critical EnvironmentTechnologies Canada Inc All rights reserved Data i...

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