Crowcon Sensitron SMART 3G-GR1 Gas Detector
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Crowcon Sensitron SMART 3G-GR1 Gas Detector
The SMART 3GD-GR1 gas detector is designed to be installed in mines, tunnels and ATEX areas classified as Group I.
The sensing element is housed in the stainless steel head. Depending on the gas detected, the gas detector can have a catalytic sensor, an infrared sensor or an electrochemical cell.
The gas detector has a 12-24 Vdc power supply, a standard 4-20 mA 3-wires output, and three relays. Optionally, the SMART 3GD-GR1 can be equipped with serial RS485 communication.
The stainless steel enclosure has dimensions 145 x 187 x 128 mm. The enclosure has three cable entries that are 3/4” NPT threaded. The SMART 3GD-GR1 features a 7-segment display for real-time concentration visualization and Hall effect sensors for non-intrusive field calibration.
The SMART 3GD-GR1 is SIL2 hardware and SIL3 software, with a redundant system, the hardware is SIL3.
SMART3GD-GR1 (With Display)
| Model | Description |
|---|---|
| S3515ME | METHANE detector, 0-100% LFL, 4-20 mA, catalytic sensor |
| S3912ME | METHANE detector, 0-100% LFL, 4-20 mA, infrared sensor |
| S3911O2 | OXYGEN (O2) detector, 0-25% vol, 4-20 mA, electrochemical cell |
| S3514CO | CARBON MONOXIDE (CO) detector, 0-500 ppm, 4-20 mA, electrochemical cell |
SMART3GC-GR1 (Without Display)
| Model | Description |
|---|---|
| S3914ME | METHANE detector, 0-100% LFL, 4-20 mA, catalytic sensor |
| S3916ME | METHANE detector, 0-100% LFL, 4-20 mA, infrared sensor |
| S3915O2 | OXYGEN (O2) detector, 0-25% vol, 4-20 mA, electrochemical cell |
| S3913CO | CARBON MONOXIDE (CO) detector, 0-500 ppm, 4-20 mA, electrochemical cell |
Spares
| Model | Description |
|---|---|
| KX155ME | METHANE detector, 0-100% LFL, 4-20 mA, catalytic sensor (for S3515ME / S3914ME) |
| KX624ME | METHANE detector, 0-100% LFL, 4-20 mA, infrared sensor (for S3912ME / S3916ME) |
| KX641O2 | OXYGEN (O2) detector, 0-25% vol, 4-20 mA, electrochemical cell (for S3911O2 / S3915O2) |
| KX131CO | CARBON MONOXIDE (CO) detector, 0-500 ppm, 4-20 mA, electrochemical cell (for S3514CO / S3913CO) |
| Sensor | |
|---|---|
| Application | Mines, tunnels and ATEX areas classified as Group I |
| Sensing element | Catalytic, Infrared and Electrochemical cell |
| Predicted sensor lifetime |
Catalytic sensor: 4 / 5 years Infrared sensor: >5 years Electrochemical cell: 2 / 3 years |
| Gas detected |
Methane [0 – 100% LFL]; Oxygen [0 – 25% Vol]; Carbon monoxide [0 – 500 ppm] |
| Electrical data | |
| Power supply | 12-24 Vdc |
| Output | Analogue 4-20 mA output; 3 relay board; 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, multi-color LED light ring |
| Acoustic indications | – |
| Hall effect sensor | Three sensors for calibration by magnet |
| Environmental conditions | |
| Storage temperature |
With catalytic and infrared sensor: -40 / +85°C With electrochemical cell: 0 / +20°C (up to 6 months) |
| Operating temperature |
With catalytic and infrared sensor: -20 / +60°C With electrochemical cell: -20 / +50°C |
| Operating humidity |
With catalytic and infrared sensor: 0 / 95% RH With electrochemical cell: 15 / 90% RH |
| External case | |
| Material |
Enclosure: stainless steel Sensor head: stainless steel |
| Protection mode | Ex d: Explosion proof enclosure |
| Dimensions | 145 x 187 x 128 mm |
| Weight | 3300 g |
| Cable entries | 3 x 3/4” NPT |
| IP grade | IP65 |
| Compliance | |
| EMC | EN 61000-6-3:2007 + A1:2011; EN 50270:2015 |
| ATEX |
ATEX directive 2014/34/EU EN IEC 60079-0:2018 EN 60079-1:2007 |
| SIL |
EN 61508:2010 Parts 1, 2, 3, 4, 5, 6, 7 EN50402:2017 |
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