cGas Detector Analog Transmitter

For monitoring: Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Formaldehyde, Hydrogen, Hydrogen fluoride, Hydrogen sulphide, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Sulfur dioxide, Ethanol, Dimethyl ether, Methanol, Methane, Propane, Hydrogen, TVOCs, Refrigerants

Single channel, analog gas detector with Plug & Play Smart Sensor Technology

Applications

Parking Facilities / Vehicle Repair Shops
Ice Arenas / Swimming Pools
Refrigeration Rooms / Chiller Rooms
Battery Charging Rooms
Manufacturing Plants
Maintenance Facilities
Greenhouses
CO2 Fire Suppression
CO2 Storage Rooms
CO2 Refrigeration Systems
Microdistilleries
Chemical Plants
Perfume/Beauty Products Manufacturing
Household Products Manufacturing
Sewage Treatment Facilities
and many more...

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Key Features

One 4-20 mA analog output or jumper selectable 0-10 or 2-10 volts
Easy Plug & Play Smart Sensor replacement at end of life, comes pre-calibrated
Bright LCD display
Optional internal 2A SPDT dry contact relay, with or without internal buzzer (Option -RBZ or Option -RLY)
Optional low temperature operation package (Option -LT)
Optional factory installed splash guard (Option -S or Option -SN)
USB port for configuration changes and firmware upgrades
Sensor Calibration Extending Firmware (CEF) for parking applications
Standard water / dust tight, corrosion resistant enclosure (drip proof); IP54 rated with optional factory installed splash guard (Option -S)
24 VDC or VAC power (ground reference)
RoHS compliant circuit boards

Description

The cGas Detector Analog Transmitter is a low maintenance gas monitoring device designed for use in non-explosion rated, commercial applications and is ideal for monitoring toxic, combustible and refrigerant gases.

Powered by 24 VDC or ground referenced AC, the cGas Detector has an LCD display, temperature compensation and the firmware and configuration can be upgraded in the field using the USB connection. Pre-calibrated sensors with true Plug & Play Smart Sensor technology makes replacing sensors quick and easy.

The cGas Detector comes in a standard water / dust tight, corrosion resistant ABS/ polycarbonate enclosure with a hinged, secured door. With the optional, factory installed splash guard the enclosure is IP54 rated and provides protection in water spray or wash down applications.

Note: Ethanol and Methanol are highly flammable. The cGas Detector is intended for use in non-classified areas only. Follow project specifications. If monitoring area is classified, our combustible or infrared CXT2 Explosion Proof products would be a suitable alternative.

Specifications

Target Gas

Electrochemical Sensor

Ammonia (NH3), Carbon monoxide (CO), Chlorine (Cl2), Ethylene (C2H4), Ethylene oxide (C2H4O), Formaldehyde (CH2O), Hydrogen (H2), Hydrogen fluoride (HF), Hydrogen sulphide (H2S), Nitric oxide (NO), Nitrogen dioxide (NO2), Oxygen (O2), Ozone (O3), Sulphur dioxide (SO2)

Infrared Sensor

Carbon dioxide (CO2)

Catalytic Sensor

Ammonia (NH3), Hydrogen (H2), Methane (CH4), Propane (C3H8), Ethanol or Dimethyl Ether (C2H6O), Methanol (CH4O)

Solid State Sensor

Refrigerants R22, R134A, R402A, R404A, R407C, R410A, R422D, R438A, R448A, R449A, R507A, R513A, R514A, TVOCs

PID Sensors

TVOC

Mechanical

Enclosure

Black ABS / Polycarbonate, corrosion resistant

Copper coated interior to reduce RF interference

IP54 rated with splash guard installed (Option -S)

Weight

400 g / 14 oz

Size

127 x 127 x 76 mm / 5.0 x 5.0 x 3.0 inches

User Interface

Display (standard)

2-line by 16 character graphic LCD
Operating Temp: 0°C to 40°C / 32°F to 104°F

Display (Option -LT)

2-line by 16 character OLED display for cold environment applications down to -40°C / -40°F

Push Buttons

Initiate calibration and menu options with internal UP, DOWN and ENTER push buttons

USB Port

Internal port for USB memory stick for field configuration updated / firmware upgrades

Input/Output

Analog Output

One linear 4 - 20 mA analog or jumper selectable 0-10 or 2-10 volts

Relay & Buzzer (Option -RBZ)

1 SPDT relay rated 30 volts, 2 amp max with internal buzzer rated 90 dB @ 10 cm / 4 in, enable/disable

Relay (Option -RLY)

1 SPDT relay rated 30 volts, 2 amp max

Electrical

Power Requirement

16-30 VDC, 3 W**, Class 2
**dependent on sensor type

12-27 VAC, 50-60 Hz, 3 VA**, Class 2
**dependent on sensor type

Wiring

VDC (or ground referenced AC): 3-conductor 18 AWG (or larger) shielded, stranded within conduit
VAC 4-conductor shielded 18 AWG stranded within conduit

Fuse(s)

Automatic resetting thermal

Environmental

Operating Temperature

0°C to 40°C (32°F to 104°F), temperatures below 0°C / 32°F require Option-LT

Operating Humidity

15 - 90% RH non-condensing

Certifications

Conforms to

CSA-C22.2 No. 205-12, UL508 (Edition 18):2018

EMC Directive 2014/30/EU, EN 50270:2015, Type 1, EN61010

FCC. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

CO and NO2 Sensor Complies with

UL2075, 2nd Edition, Standard for Gas and Vapour Detectors and Sensors

Conforms to

RoHS compliant circuit boards

Product Codes

4 Series Electrochemical Sensors

Available with relay and buzzer - add Option -RBZ

CGAS-A-CO

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO-100

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 100 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO-250

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 250 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO-300

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 300 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO-500

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 500 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-EETO

Single channel, electrochemical ethylene oxide (C2H4O) sensor (0 - 20 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-EH2

Single channel, electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CH2O

Single channel, electrochemical formaldehyde (HCHO / CH2O) sensor (0 - 5 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-H2S

Single channel, electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-NO

Single channel, electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-NO2

Single channel, internal electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), UL2075 approved sensor, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-O2

Single channel, electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SO2

Single channel, electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology, low profile, public spaces enclosure

4 Series Sticky Gas Sensors

Not available with a relay and/or buzzer.

CGAS-A-CL2

Single channel, electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CL2-10

Single channel, electrochemical chlorine (Cl2) sensor (0 - 10 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CLO2

Single channel, electrochemical chlorine dioxide (ClO2) sensor (0 - 1 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-F2

Single channel, electrochemical fluorine (F2) sensor (0 - 1ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-HCL

Single channel, electrochemical hydrogen chloride (HCL) sensor (0 - 30 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-HCN

Single channel, electrochemical hydrogen cyanide (HCN) sensor (0 - 30 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-HF

Single channel, electrochemical hydrogen fluoride (HF) sensor (0 - 10.0 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-O3

Single channel, electrochemical ozone (O3) sensor (0 - 1 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

7 Series Gas Sensors

Come standard with relay and buzzer.

CGAS-A-7NH3

Single channel, electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7CO

Single channel, internal electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7CL2

Single channel, electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7CL2-10

Single channel, electrochemical chlorine (Cl2) sensor (0 - 10 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7CLO2

Single channel, electrochemical chlorine dioxide (ClO2) sensor (0 - 1 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7C2H4

Single channel, electrochemical ethylene (C2H4) sensor (0 - 200 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7C2H4-1500

Single channel, electrochemical ethylene (C2H4) sensor (0 - 1,500 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7F2

Single channel, electrochemical fluorine (F2) sensor (0 - 1ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7HCL

Single channel, electrochemical hydrogen chloride (HCL) sensor (0 - 30 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7HCN

Single channel, electrochemical hydrogen cyanide (HCN) sensor (0 - 30 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7HF

Single channel, electrochemical hydrogen fluoride (HF) sensor (0 - 10.0 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7H2S

CGAS-A-7NO2

Single channel, internal electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-7O3

Single channel, electrochemical ozone (O3) sensor (0 - 1 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

Carbon Dioxide Gas Sensors

Available with relay and buzzer - add Option -RBZ

CGAS-A-CO2-2K

Single channel infrared carbon dioxide (CO2) sensor (0 - 2,000 ppm range), LCD display, one analog 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO2-5K

Single channel infrared carbon dioxide (CO2) sensor (0 - 5,000 ppm range), LCD display, one analog 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO2-10K

Single channel infrared carbon dioxide (CO2) sensor (0 - 10,000 ppm range), LCD display, one analog 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CO2-5%

Single channel infrared carbon dioxide (CO2) sensor (0 - 5.0% vol range), LCD display, one analog 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, Plug & Play Smart sensor replacement, water / dust tight enclosure

Solid State Refrigerant Sensors

Available with relay and buzzer. Also available with NDIR refrigerant sensor - see CGAS Detector IR Refrigerant product page.

CGAS-A-SR22

Single channel, internal solid state refrigerant (R22) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR134A

Single channel, internal solid state refrigerant (R134A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR402A

Single channel, internal solid state refrigerant (R402A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR404A

Single channel, internal solid state refrigerant (R404A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR407C

Single channel, internal solid state refrigerant (R407C) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR410A

Single channel, internal solid state refrigerant (R410A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR422D

Single channel, internal solid state refrigerant (R422D) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR438A

Single channel, internal solid state refrigerant (R438A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR448A

Single channel, internal solid state refrigerant (R448A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR449A

Single channel, internal solid state refrigerant (R449A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR507A

Single channel, internal solid state refrigerant (R507A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR513A

Single channel, internal solid state refrigerant (R513A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SR514A

Single channel, internal solid state refrigerant (R514A) sensor (0 - 2,000 ppm), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

Catalytic Combustible Gas Sensors

Available with relay and buzzer - add Option -RBZ

CGAS-A-NH3-3%

Single channel catalytic ammonia (NH3) sensor (0 - 3% vol range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure. NOTE: This is not a life safety device. This is a backup redundancy detector for monitoring potentially high levels of ammonia.

CGAS-ACC4H10-100

Single channel catalytic butane (C4H10) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CC2H6O-100

Single channel catalytic ethanol or dimethyl ether (C2H6O) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CH2-100

Single channel catalytic hydrogen (H2) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CCH4-100

Single channel catalytic methane (CH4) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CCH4O-100

Single channel catalytic methanol (CH4O) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-CC3H8-100

Single channel catalytic propane (C3H8) sensor (0 - 100% LEL range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

Other Sensors

Available with relay and buzzer - add Option -RBZ

CGAS-A-STVOC

Single channel, internal solid state TVOC sensor (0 - 500 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SPH

Single channel PID TVOC high range sensor (0 - 300 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-SPL

Single channel, internal PID TVOC low range sensor (0 - 30 ppm range), LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure

CGAS-A-RHT

Single channel relative humidity and temperature sensor, user configurable measurement units, LCD display, one analog 4-20 mA output, Plug & Play Smart sensor replacement, water / dust tight enclosure NOTE: the analog output can be RH or Temperature, not both

CGAS-A-R

No internal sensor, add required ESH-A Remote Sensor

Factory Options

-LT*

Low temperature package with OLED display and internal heater for cold environment applications down to -40°C / -40°F

-RBZ*

1 SPDT dry contact relay rated 30 volts, 2 amps max with internal audible alarm rated 90 dB @ 10 cm / 4 in

-RLY*

One SPDT dry contact relay, rated 30 volts, 2 amps max

-S

Splash Guard for non sticky gas sensors, factory installed, IP54 rating

-SN

Splash Guard for sticky gas sensors (Cl2, ClO2, HCl, HCN, HF, O3, PH3) and for configurations that include an internal NO2 sensor, factory installed

Important Notes on Options

*Option -LT is not available with CGAS-A-EETO
*Options -RBZ or -RLY can be added to all single channel 4-series electrochemical toxic gas sensors
*Options -RBZ or -RLY can be added to all combustible gas, solid state or PID TVOC gas sensors
*All 4 series sticky gas models cannot have a relay or buzzer.