Crowcon Sensitron SMART 3G-D3 Gas Detector with Electrochemical sensor
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Crowcon Sensitron SMART 3G-D3 Gas Detector with Electrochemical sensor
The SMART 3G-D3 Gas Detector with Electrochemical 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. Due to the optimal performance in these applications, the electrochemical cell detects toxic gas.
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
| Sensor Part Number | Description |
|---|---|
| SMART3G-D3 – TOXIC GAS (Electrochemical cell) | |
| S2642O2 | OXYGEN (O2) detector, 0-25% Vol., 4-20 mA |
| S2162CO | CARBON MONOXIDE (CO) detector, 0-500 ppm, 4-20 mA |
| S3226AM | AMMONIA (NH3) detector, 0-100 ppm, 4-20 mA |
| S2164AM | AMMONIA (NH3) detector, 0-200 ppm, 4-20 mA |
| S2166AM | AMMONIA (NH3) detector, 0-1000 ppm, 4-20 mA |
| S3230AM | AMMONIA (NH3) detector, 0-5000 ppm, 4-20 mA |
| S2168HS | HYDROGEN SULPHIDE (H2S) detector, 0-50 ppm, 4-20 mA |
| S2176NO | NITRIC OXIDE (NO) detector, 0-100 ppm, 4-20 mA |
| S3594H2 | HYDROGEN (H2) detector, 0-2000 ppm, 4-20 mA |
| S4548H2 | HYDROGEN (H2) detector, 0-3000 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 adjustment, measuring 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 |
| Sensor | |
| Application | Industrial area, ATEX Zone 2 and Zone 22 (when equipped with dust adapter, optional) |
| Sensing element | Electrochemical cell |
| Predicted sensor lifetime | 2 / 3 years |
| Gas detected | O2 [0-25% Vol], CO [0-500/1000 ppm], NH3 [0-100/200/1000/5000 ppm], H2S [0-50/100 ppm], NO [0 – 100 ppm]; H2 [0 – 2000/3000 ppm] |
| 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 | 0 / +20°C up to six months |
| Operating temperature | -30 / +50°C |
| Operating humidity | 15 / 90% RH non condensing |
| 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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