Crowcon Sensitron SMART 3G-C3 Gas Detector

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Crowcon Sensitron SMART 3G-C3 Gas Detector

The Sensitron SMART3G-C3 gas detector is designed to meet industrial requirements. Its enclosure is explosion-proof and can be installed in ATEX Zone 2 and, when equipped with a dust adapter, Zone 22.

The sensing element is placed in the stainless steel head with a 40 mm diameter.

The infrared sensors employed for flammable and refrigerant gas detection are poison-free, have high accuracy, and have a long lifetime.

The gas detector has a 12-24 Vdc power supply and a standard 4-20 mA 3-wire output. Optionally, the SMART3G-C3 can be equipped with serial RS485 communication and a 1 or 3 relay board.

The enclosure measures 106 x 160 x 62 mm and has an M20 cable gland on the upper side.

Order Information

SMART3G-C3 – Flammable Gas (Catalytic Sensor)

Part Number Description
CR2096ME METHANE detector, 4-20 mA, 0-100% LFL
CR2096GP LPG detector, 4-20 mA, 0-100% LFL
CR2096BU BUTANE detector, 4-20 mA, 0-100% LFL
CR2096PR PROPANE detector, 4-20 mA, 0-100% LFL
CR2096VB PETROL VAPOURS detector, 4-20 mA, 0-100% LFL
CR2096H2 HYDROGEN detector, 4-20 mA, 0-100% LFL

SMART3G-C3 – Flammable Gas (Infrared Sensor)

CR2623ME METHANE detector, 4-20 mA, 0-100% LFL
CR2653BU BUTANE detector, 4-20 mA, 0-100% LFL
CR2653PR PROPANE detector, 4-20 mA, 0-100% LFL
CR2653GP LPG detector, 4-20 mA, 0-100% LFL
CR4432R454B R454B detector, 4-20 mA, 0-100% LFL
CR3424R32 R32 DIFLUOROMETHANE detector, 4-20 mA, 0-100% LFL
CR3428R1234YF R1234yf detector, 4-20 mA, 0-100% LFL
CR3432R1234ZE R1234ze detector, 4-20 mA, 0-100% LFL

SMART3G-C3 – Toxic Gases (Electrochemical Cell)

CR2640O2 OXYGEN (O2) detector, 0-25% Vol., 4-20 mA
CR2130CO CARBON MONOXIDE (CO) detector, 0-500 ppm, 4-20 mA
CR2130EL ETHYLENE (C2H4) detector, 0-200 ppm
CR3224AM AMMONIA (NH3) detector, 0-100 ppm, 4-20 mA
CR2132AM AMMONIA (NH3) detector, 0-200 ppm, 4-20 mA
CR2134AM AMMONIA (NH3) detector, 0-1000 ppm, 4-20 mA
CR3228AM AMMONIA (NH3) detector, 0-5000 ppm, 4-20 mA
CR2136HS HYDROGEN SULPHIDE (H2S) detector, 0-50 ppm, 4-20 mA
CR2144NO NITRIC OXIDE (NO), 0-100 ppm, 4-20 mA
CR3592H2 HYDROGEN (H2) detector, 0-2000 ppm, 4-20 mA
CR4546H2 HYDROGEN (H2) detector, 0-3000 ppm, 4-20 mA

SMART3G-C3 – CO2 (Infrared Sensor)

CR2649CO2 CARBON DIOXIDE (CO2) detector, 0-2% Vol., 4-20 mA
CR2650CO2 CARBON DIOXIDE (CO2) detector, 0-5% Vol., 4-20 mA
CR2443CO2 CARBON DIOXIDE (CO2) detector, 0-30% Vol., 4-20 mA
CR2444CO2 CARBON DIOXIDE (CO2) detector, 0-5000 ppm, 4-20 mA
CR2629CO2 CARBON DIOXIDE (CO2) detector, 0-100% Vol., 4-20 mA

SMART3G-C3 – VOC Detectors (PID Sensors)

CR3540IL VOC detector, 0-20 ppm, 4-20 mA (Isobutylene)
CR3544IL VOC detector, 0-200 ppm, 4-20 mA (Isobutylene)
CR5121IL VOC detector, 0-2000 ppm, 4-20 mA (Isobutylene)

SMART3G-C3 – SF6 & Refrigerant Gases (Infrared Sensor)

CR3942R32 R32 detector, 0-2000 ppm, 4-20 mA
CR3595R134A R134a detector, 0-2000 ppm, 4-20 mA
CR3598SF6 SF6 detector, 0-2000 ppm, 4-20 mA
CR3020R125 R125 detector, 0-2000 ppm, 4-20 mA
CR3021R1234YF R1234yf detector, 0-2000 ppm, 4-20 mA
CR3025R1234ZE R1234ze detector, 0-2000 ppm, 4-20 mA
CR3022R404A R404A detector, 0-2000 ppm, 4-20 mA
CR3023R407A R407A detector, 0-2000 ppm, 4-20 mA
CR3918R407F R407F detector, 0-2000 ppm, 4-20 mA
CR3921R449 R449 detector, 0-2000 ppm, 4-20 mA
CR3024R507A R507A detector, 0-2000 ppm, 4-20 mA
CR3016R410A R410A detector, 0-2000 ppm, 4-20 mA
CR3950R417A R417A detector, 0-2000 ppm, 4-20 mA
CR3954R448 R448 detector, 0-2000 ppm, 4-20 mA
Parameter Specification
Application Industrial area, ATEX Zone 2 and Zone 22 (when equipped with dust adapter, optional)
Sensing Element Infrared
Predicted Sensor Lifetime > 5 years
Gas Detected Flammable, refrigerant and CO2
Full Scale 0 – 100% LFL flammable gas
0 – 2000 ppm refrigerant gas
0-2%Vol; 0-5%Vol; 0-30%Vol; 0-100%Vol CO2
Power Supply 12-24 Vdc
Output Analogue 4-20 mA output;
1 or 3 relay board (optional);
serial RS485 output (optional)
Maximum Dissipated Power 5.4 W
Relays Contact Ratings 1.0 A at 24 Vdc (optional board)
Optical Indications –
Acoustic Indications –
Hall Effect Sensor –
Storage Temperature -40 / +85°C
Operating Temperature -40 / +60°C
Operating Humidity 0 / 90% RH
Material Enclosure: Aluminium
Sensor head: stainless steel
Protection Mode Ex e: Increased safety protection mode
Ex nC: Enclosed equipment protection mode
Ex d: Explosion proof enclosure
Ex t: Equipment dust ignition protection by enclosure (when equipped with dust adapter, optional)
Dimensions 106 x 160 x 62 mm
Weight 1023 g
Cable Entries 1 x M20
IP Grade IP55 (certification pending)
EMC EN 61000-6-3:2007 + A1:2011;
EN 50270:2015
ATEX (Certification Pending) ATEX directive 2014/34/EU
EN IEC 60079-0:2018
EN 60079-1:2014
EN 60079-7:2015
EN 60079-15:2010
EN 60079-31:2014
SIL EN 61508:2010 Parts 1, 2, 3, 4, 5, 6, 7
EN50402:2017

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