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Crowcon SMART 3-NC | Safe-Area Point Gas Detector | CH4, LPG, CO, NO2, CO2, 4-20 mA, IP55
The SMART 3-NC is an IP55 point detector from Crowcon's Sensitron range for non-classified areas and car parks. It uses an industrial catalytic sensor for methane, LPG and petrol vapours, a three-electrode electrochemical cell for gases such as CO and NO2, and an infrared sensor for CO2. Set-up and calibration are done with the STS/CKD hand-held keypad.
Key features
- Standard 4-20 mA with optional 1 or 3 relays
- Optional RS485 Modbus interface
- Ongoing system self-diagnosis
- Compact 0.25 kg polycarbonate housing
- Two M20 cable entries
- Industrial catalytic sensor for methane, LPG and petrol vapours
- Specifications
- Downloads
| Part Number | SMART 3-NC |
| Brand | Crowcon |
| Gases | CH4, petrol vapour, LPG (cat); CO, NO2, Cl2, SO2, HCl (EC); CO2 (IR) |
| Size | Box 100 x 100 x 52 mm; cover 105.8 x 105.8 x 7.8 mm |
| Weight | 0.25 kg |
| Enclosure | Polycarbonate |
| Ingress protection | IP55 |
| Connection | 2 x M20 |
| Power | 12-24 Vdc |
| Outputs | 4-20 mA; 1 or 3 relays (optional); RS485 (optional) |
| Operating temperature | -20 to +60 °C (cat/IR); -20 to +55 °C (EC) |
| EMC | EN 61000-6-3; EN 50270 |
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