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.

Sensor Part Number	Description
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, 4-20 mA, 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 including USB key, USB/RS485 converter and STS/IDI card. Allows alarm threshold changes, range setup, and Zero/Span/4-20 mA calibration via user-friendly interface.
STS/IDI	Plug-in interface for RS485 serial communication suitable for SMART3G
STGD/AD3	Adapter for all sensor heads (except S2096__ & S2097__) to upgrade protection from G to GD