Crowcon Sensitron SMART 3G-D3 Gas Detector with Infrared sensor

Code: S2625ME
  • Flammable, refrigerant & CO2
  • Designed for Industrial areas
  • Approval ATEX Zone 2 & Zone 22

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The SMART 3G-D3 Gas Detector with Infrared sensor is designed to meet industrial requirements; the enclosure is explosion-proof and can be installed in ATEX Zone 2 and, when equipped with a dust adapter, in Zone 22.

The sensing element is placed in the stainless steel head with a 47.5 mm diameter. The infrared sensors employed for flammable and refrigerant gas detection are poison-free, with high accuracy and a long lifetime.

The gas detector has a 12-24 Vdc power supply, a standard 4-20 mA 3-wires output, and three relays. Optionally, the SMART3G-D3 can be equipped with serial RS485 communication.

The enclosure has dimensions 106 x 160 x 81 mm; on the upper side, there’s a M20 cable gland. The SMART3G-D3 features a 7-segment display for real-time concentration visualization and Hall effect sensors for non-intrusive field calibration.

SMART3G-D3 is SIL2 hardware and SIL3 software with a redundant system; the hardware is SIL3.

Order Information

SMART3G-D3 – FLAMMABLE GAS (Infrared sensor)
S2625ME METHANE detector, 4-20 mA, 0-100% LFL
S2601PR PROPANE detector, 4-20 mA, 0-100% LFL
S2601BU BUTANE detector, 4-20 mA, 0-100% LFL
S2601GP LPG detector, 4-20 mA, 0-100% LFL
S4434R454B R454B detector, 4-20 mA, 0-100% LFL
S4828R454C R454C detector, 4-20mA, 0-100% LFL
S3426R32 R32 DIFLUOROMETHANE detector, 4-20 mA, 0-100% LFL
S3430R1234YF R1234yf detector, 4-20 mA, 0-100% LFL
S3435R1234ZE R1234ze detector, 4-20 mA, 0-100% LFL
SMART3G-D3 – CO2 (Infrared sensor) 
S2631CO2 CARBON DIOXIDE (CO2) detector, 0-2% Vol., 4-20 mA
S2632CO2 CARBON DIOXIDE (CO2) detector, 0-5% Vol., 4-20 mA
S2447CO2 CARBON DIOXIDE (CO2) detector, 0-30% Vol., 4-20 mA
S2448CO2 CARBON DIOXIDE (CO2) detector, 0-5000 ppm, 4-20 mA
S2633CO2 CARBON DIOXIDE (CO2) detector, 0-100% Vol., 4-20 mA
SMART3G-D3 – SF6 and REFRIGERANT GASES (Infrared sensor) 
S3943R32 R32 detector, 0-2000 ppm, 4-20 mA
S3597R134A R134a detector, 0-2000 ppm, 4-20 mA
S3600SF6 SF6 detector, 0-2000 ppm, 4-20 mA
S3651R125 R125 detector, 0-2000 ppm, 4-20 mA
S3652R1234YF R1234yf detector, 0-2000 ppm, 4-20 mA
S3947R1234ZE R1234ze detector, 0-2000 ppm, 4-20 mA
S3653R404A R404A detector, 0-2000 ppm, 4-20 mA
S3654R407A R407A detector, 0-2000 ppm, 4-20 mA
S3919R407F R407F detector, 0-2000 ppm, 4-20 mA
S3922R449A R449 detector, 0-2000 ppm, 4-20 mA
S3655R507A R507A detector, 0-2000 ppm, 4-20 mA
S3672R410A R410A detector, 0-2000 ppm, 4-20 mA
S3951R417A R417A detector, 0-2000 ppm, 4-20 mA
S3955R448 R448 detector, 0-2000 ppm, 4-20 mA
ACCESSORIES 
STS/CSW+ Calibration software for SMART3G, SMART3NC & SMART3R detectors consisting of a USB key, a USB/RS485 converter and the STS/IDI card. The software runs on Windows XP, Windows 7, and Windows 10. The calibration software allows the modification of the alarm thresholds and the measuring range and allows adjusting the Zero, Span and 4-20 mA values via a user-friendly menu, either in situ or in the laboratory.
STS/IDI Plug-in interface for RS485 serial communication suitable for SMART3G
STGD/AD3 Adapter for all sensor heads (exception made for S2096__ & S2097__) to upgrade the protection from G to GD

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Title Size
SMART3G-D3 Infrared Datasheet 1 MB

Additional information

Weight 0.190 kg

Specifications

Sensor
Application Industrial area, ATEX Zone 2 e 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
Electrical data
Power supply 12-24 Vdc
Output Analogue 4-20 mA output; 3 relays; serial RS485 output (optional)
Maximum dissipated power 5.4 W
Relays contact ratings 1.0 A at 24 Vdc
Optical indications 7-segment display, 5 status LED and 4 intelligent LED
Acoustic indications
Hall effect sensor Three sensors for calibration by magnet
Environmental conditions
Storage temperature -40 / +85°C
Operating temperature -40 / +60°C
Operating humidity 0 / 90% RH
External case
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 81 mm
Weight 1210 g
Cable entries 1 x M20
IP grade IP55 (certification pending)
Compliance
EMC EN 61000-6-3:2007 + A1:2011; EN 50270:2015
ATEX ATEX directive 2014/34/EU (certification pending)
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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