Features
- Suitable for ATEX Zones 2 and 22
- Stable long-life electrochemical cell
- Ranges 0...100 ppm, 0...2000 ppm H2S
- Resolution 1 ppm H2S
- Two SPST relays option
- 2 × 4-20 mA / 0-10 V, RS485
Description
E2670 series is a new line of flameproof detectors-transmitters intended for use in ATEX Zones 2 and 22.
Applications include sewerage systems, labs, industrial premises and other areas, where potentially toxic concentration of hydrogen sulfide can accumulate.
The instrument utilises novel fully calibrated and temperature compensated gas sensor with excellent repeatability, stability and long lifetime.
To connect the detector to safety or building automation systems use two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol. We recommend to set the output scale within 20-100% of the detection range.
Two relays with closing contact (option) may be used for remote signalling or ventilation control. For 0...100 ppm range alarm set-points are 10 and 20 ppm. For 0...2000 ppm range alarm set-points are user settable within 5-95% of the detection range.
Technical data
| Calibration | Hydrogen sulfide H2S |
| Sensing method | Long-life electrochemical cell |
| Sampling method | Diffusion |
| Detection range | Standard 0...100 ppm (500 ppm peak) H2S |
| High 0...2000 ppm | |
| other ranges on request | |
| Resolution | 1 ppm H2S |
| Sensor lifetime | > 2 years |
| Power supply | 12...36 VDC (default), |
| 24 VAC or 230 VAC as options | |
| Digital interface | RS485, Modbus RTU protocol |
| Analog outputs | 2 × 4-20 mA / 0-10 V, user settable |
| Output relays (option) | 2 × SPST relays (closing contact), |
| 250 VAC / 30 VDC, 5 A max | |
| Enclosure | Grey die-cast aluminium, |
| protection class IP65 | |
| Dimensions | H155 × W145 × D110 mm |
| Operating conditions | -30...+50 °C, 15...90% RH |
| Safe areas and ATEX Zones 2 and 22 |
