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GEM-II Multi-Purpose, Self-Contained Gas Detector
GEM Multi-Purpose, Self-Contained Gas Detectors
GEM Multi-Purpose, Self-Contained Gas Detectors
GEM-W Watertight Self-Contained Gas Detector
GEM-W Watertight Self-Contained Gas Detector
GEM-W Watertight Self-Contained Gas Detector

    GEM-II Multi-Purpose, Self-Contained Gas Detector

    Key Features

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    Single or Dual-channel
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    Network multiple units
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    Integral plug & play “smart” sensors or remote sensors
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    4 - 20 mA linear output signal
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    Three conduit entry ports
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    Thermal resetting fuse
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    LED light indicators
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    Two 5-amp S.P.D.T. relays
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    RoHS compliant circuit boards
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    CSA & UL certified

The GEM-II multi-purpose gas detector represents excellent value for the end user. They are available in one or two channel configurations accommodating accurate “smart” sensors and providing a wide range of features. These features include CSA and UL certifications, RoHS compliant circuit boards, two 5-amp dry contact relays, electronic adjustable set points, audible alarm, time delays, analog output, pluggable wiring terminal, rugged polycarbonate enclosure with hinged door, Lexan label, and optional 4-digit display.

APPLICATIONS

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    Parking Garages
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    Ice Cleaning Machine Rooms
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    Manufacturing Plants
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    Repair Shops
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    and many more

Gas Types

Carbon Monoxide (CO) ECO
Combustible Gases (solid state) SCB
Methane (CH4) SCB
Nitrogen Dioxide (NO2) END
Nitric Oxide (NO) ENO
Oxygen (O2) EO2
Propane (C3H8) SCB
Refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507) SR2
Sulphur Dioxide (SO2) ESO
TVOCs (solid state) SOS

Sensors


Mechanical

GEM Standard Self-Contained Gas Detector
Enclosure: General Purpose PVC
Weight: 600 g (1.2 lb)
Size: 5.3" x 6.8" x 2.6" (135 mm x 173 mm x 66 mm)
   
GEM-W Watertight Self-Contained Gas Detector
Enclosure: Water / dust tight polycarbonate
Weight: 700 g (1.4 lb)
Size: 5.1" x 7.1" x 4.0" (130 mm x 130 mm x 102 mm)

Electrical

Power Requirement: 15 - 30 VDC or 12 - 28 VAC
Outputs: 4 - 20 mA linear (single)
Wiring: VDC three-conductor shielded; VAC four-conductor shielded
Fuse: Automatic resetting thermal

Input / Output

User Interface

Environmental

Operating Temperature: -20°C to 50°C (-5°F to 120°F)
Humidity: 15 - 90% RH non-condensing

Note: Measurements above are sensor dependent.

Certifications

CSA Certification CSA Certified
UL Certification UL Certified

Drawings

GEM-A Single Channel Installation DrawingGEM-A Single Channel Installation Drawing

GEM-B Single Channel Installation DrawingGEM-B Single Channel Installation Drawing

GEM-D Dual Channel CO / C3H8 Installation DrawingGEM-D Dual Channel CO / C3H8 Installation Drawing

GEM-D Dual Channel CO / Combustible Installation Drawing GEM-D Dual Channel CO / Combustible Wiring to Connect VFDs

GEM-DECO-SCB-J Dual Channel CO / C3H8, 120 VAC, Installation Drawing GEM-DECO-SCB-J Dual Channel CO / C3H8, 120 VAC, Installation Drawing

GEM-DECO-SCB-NJ & AST-SCB-SW Dual Channel CO / C3H8, 120 VAC, Installation Drawing GEM-DECO-SCB-NJ & AST-SCB-SW Dual Channel CO / C3H8, 120 VAC, Installation Drawing

GEM-E Dual Channel CO / NOx Installation DrawingGEM-E Dual Channel CO / NOx Installation Drawing

Product Specifications


Engineering Specification Samples

Ammonia (NH3)
GEM-B-NW & AST-EAM-W Gas Detection System for Ammonia (NH3) GEM-B-NW & AST-EAM-W for Gas Detection System

Carbon Monoxide (CO)
GEM-AECO-J Vehicle Gas Detection System for Carbon Monoxide GEM-AECO-J for Vehicle Exhaust Detection System

Carbon Monoxide (CO) & Nitrogen Dioxide (NO2)
GEM-EECO-END Vehicle Exhaust Detection for Carbon Monoxide (CO) & Nitrogen Dioxide (NO2) GEM-EECO-END for Vehicle Exhaust Detection
GEM-EECO-END-NW Vehicle Exhaust Detection for Carbon Monoxide (CO) & Nitrogen Dioxide (NO2) for Wet Environments GEM-EECO-END-NW for Vehicle Exhaust Detection for Wet Environments (with LED display)
GEM-EECO-END-NSW Vehicle Exhaust Detection for Carbon Monoxide (CO) & Nitrogen Dioxide (NO2) for Wet Environments GEM-EECO-END-NSW for Vehicle Exhaust Detection for Wet Environments (with LED display & splash guard)
GEM-EECO-END Carbon Monoxide (CO) & Nitrogen Dioxide (NO2) Detection for Ice Arenas GEM-EECO-END for Ice Arenas

Combustible Fuel Vapours
GEM-B-SCB Vehicle Gas Detection System for Combustible Fuel Vapours GEM-B-SCB for Vehicle Gas Detection System
GEM-B-N & AST-CCB-W Vehicle Gas Detection System for Combustible Fuel Vapours c/w Remote Annunciator GEM-B-N & AST-CCB-W for Vehicle Gas Detection System (with remote annunciator)
GEM-B-JN & AST-SCB for Battery Charging Room GEM-B-JN & AST-SCB for Battery Charging Room

Carbon Monoxide (CO) & Combustible Fuel Vapors
GEM-DECO-SCB-NJ & AST-SCB-SW for Zamboni Exhaust Detection System GEM-DECO-SCB-NJ & AST-SCB-SW for Zamboni Exhaust Detection System
GEM-DECO-SCB-J for Car Parks GEM-DECO-SCB-J for Car Parks

Chlorine (Cl2)
GEM-B-NW & AST-ECL-W Gas Detection System for Chlorine (Cl2) GEM-B-NW & AST-ECL-W for Gas Detection System

Refrigerants
GEM-B-N-SR2 for Refrigerant Leak Detection System (with remote sensor) GEM-B-N-SR2 for Refrigerant Leak Detection System (with remote sensor)
GEM-B-N & AST-SR2 for Refrigerant Leak Detection System (with analog transmitter) GEM-B-N & AST-SR2 for Refrigerant Leak Detection System (with analog transmitter)
GEM-B-N & AST-IRT for Refrigerant Leak Detection System (with infrared analog transmitter) GEM-B-N & AST-IRT for Refrigerant Leak Detection System (with infrared analog transmitter)

DataSheets

GEM DatasheetGEM Datasheet

GEM-W DatasheetGEM-W Datasheet

Operation Manual

GEM-II Operation ManualGEM-II Operation Manual

Application Brochure

Quick Application Guide
Quick Application Guide For Fixed Gas Detection SystemsFor Fixed Gas Detection Systems

Miscellaneous Files

Quick Selection Guide For Fixed Gas Detection TransmittersQuick Selection Guide For Fixed Gas Detection Transmitters

GEM Standard Self-Contained Gas Detectors

Single channel, integral sensor, carbon monoxide (CO) GEM-AECO
Single channel, integral sensor, nitrogen dioxide (NO2) GEM-AEND
Single channel, integral sensor, nitric oxide (NO) GEM-AENO
Single channel, integral sensor, sulphur dioxide (SO2) GEM-AESO
Single channel, integral sensor, oxygen (O2) GEM-AEO2
Single channel, remote sensor GEM-B
Single channel, remote sensor, combustible gases (solid state) GEM-BSCB
Single channel, remote sensor, methane (CH4) GEM-BSCB
Single channel, remote sensor, propane (C3H8) GEM-BSCB
Single channel, remote sensor, refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507) GEM-BSR2
Single channel, remote sensor, TVOCs (solid state) GEM-BSOS
Dual channel, integral carbon monoxide (CO), remote combustible GEM-DECO-SCB
Dual channel, integral carbon monoxide (CO), remote methane (CH4) GEM-DECO-SCB
Dual channel, integral carbon monoxide (CO), remote propane (C3H8) GEM-DECO-SCB
Dual channel, integral carbon monoxide (CO), remote carbon monoxide (CO) GEM-DECO-ECO
Dual channel, integral carbon monoxide (CO), remote nitrogen dioxide (NO2) GEM-DECO-END
Dual channel, integral carbon monoxide (CO), remote nitric oxide (NO) GEM-DECO-ENO
Dual channel, integral oxygen (O2), remote oxygen (O2) GEM-DEO2-EO2
Dual channel, integral nitrogen dioxide (NO2), remote nitrogen dioxide (NO2) GEM-DEND-END
Dual channel, integral nitric oxide (NO), remote nitric oxide (NO) GEM-DENO-ENO
Dual channel, integral sensors, carbon monoxide (CO) & nitrogen dioxide (NO2) GEM-EECO-END
Dual channel, integral sensors, carbon monoxide (CO) & nitric oxide (NO) GEM-EECO-ENO
Dual channel, integral sensors, carbon monoxide (CO) & oxygen (O2) GEM-E-ECO-EO2
Dual channel, integral sensors, carbon monoxide (CO) & sulphur dioxide (SO2) GEM-EECO-ESO
Dual channel, integral sensors, nitrogen dioxide (NO2) & sulphur dioxide (SO2) GEM-EEND-ESO

Standard Option

120 VAC powered version J
Local LED digital display N
Enclosed external transformer, 120-22 VAC TIB-2250

GEM-W Watertight Self-Contained Gas Detector

Single channel, integral sensor, carbon monoxide (CO) GEM-AECO-W
Single channel, integral sensor, nitrogen dioxide (NO2) GEM-AEND-W
Single channel, integral sensor, nitric oxide (NO) GEM-AENO-W
Single channel, integral sensor, sulphur dioxide (SO2) GEM-AESO-W
Single channel, integral sensor, oxygen (O2) GEM-AEO2-W
Single channel, remote sensor GEM-B-W
Single channel, remote sensor, combustible gases (solid state) GEM-BSCB-W
Single channel, remote sensor, methane (CH4) GEM-BSCB-W
Single channel, remote sensor, propane (C3H8) GEM-BSCB-W
Single channel, remote sensor, refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507) GEM-BSR2-W
Single channel, remote sensor, TVOCs (solid state) GEM-BSOS-W
Dual channel, integral carbon monoxide (CO), remote combustible GEM-DECO-SCB-W
Dual channel, integral carbon monoxide (CO), remote methane (CH4) GEM-DECO-SCB-W
Dual channel, integral carbon monoxide (CO), remote propane (C3H8) GEM-DECO-SCB-W
Dual channel, integral carbon monoxide (CO), remote carbon monoxide (CO) GEM-DECO-ECO-W
Dual channel, integral carbon monoxide (CO), remote nitrogen dioxide (NO2) GEM-DECO-END-W
Dual channel, integral carbon monoxide (CO), remote nitric oxide (NO) GEM-DECO-ENO-W
Dual channel, integral oxygen (O2), remote oxygen (O2) GEM-DEO2-EO2-W
Dual channel, integral nitrogen dioxide (NO2), remote nitrogen dioxide (NO2) GEM-DEND-END-W
Dual channel, integral nitric oxide (NO), remote nitric oxide (NO) GEM-DENO-ENO-W
Dual channel, integral sensors, carbon monoxide (CO) & nitrogen dioxide (NO2) GEM-EECO-END-W
Dual channel, integral sensors, carbon monoxide (CO) & nitric oxide (NO) GEM-EECO-ENO-W
Dual channel, integral sensors, carbon monoxide (CO) & oxygen (O2) GEM-EECO-EO2-W
Dual channel, integral sensors, carbon monoxide (CO) & sulphur dioxide (SO2) GEM-EECO-ESO-W
Dual channel, integral sensors, nitrogen dioxide (NO2) & sulphur dioxide (SO2) GEM-EEND-ESO-W

Watertight Option

120 VAC powered version J
Local LED digitial display N
Splash guard S
Enclosed external transformer, 120-22 VAC TIB-2250

Metal Protective Guard

» 16 gauge, clear anodized metal protective guard
» Larger size for controllers & self-contained systems
» Smaller size for analog & digital transmitters

Calibration Kit

» Full selection of calibration gases from stock
» All required calibration accessories for field and shop calibration
» Full service and calibration shop for fixed gas detection instruments

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