Crowcon Sensitron SMART 3G-D3 Gas Detector with Catalytic Sensor

Code: S2156ME
  • Flammable/Combustible gas detection
  • Designed for Industrial areas
  • Approval ATEX Zone 2 & Zone 22

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The SMART 3G-D3 Gas Detector with Catalytic 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 pellistor sensors employed for flammable gas detection show an excellent output linearity of up to 100% LEL and a fast response time.

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 (Catalytic sensor)
S2156ME METHANE detector, 4-20 mA, 0-100% LFL
S2156GP LPG detector, 4-20 mA, 0-100% LFL
S2156PR PROPANE detector, 4-20 mA, 0-100% LFL
S2156BU BUTANE detector, 4-20 mA, 0-100% LFL
S2156VB PETROL VAPOURS detector, 4-20 mA, 0-100% LFL
S2156H2 HYDROGEN detector, 4-20mA, 0-100% LFL
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 Catalytic Datasheet 1,020 KB

Additional information

Weight 0.190 kg

Specifications

Sensor
Application Industrial area, ATEX Zone 2 and Zone 22 (when equipped with dust adapter, optional)
Sensing element Catalytic
Estimated sensor lifetime 4 / 5 years
Gas detected Methane, LPG, Propane, Butane, Petrol Vapours
Full scale 0 – 100% LFL
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)

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