Features
- Stable long-life electrochemical sensor
- Range 0...100 or 0...2000 ppm H2S
- Resolution 1 ppm H2S
- Two SPST relays option
- 2 × 4-20 mA or 0-10 V, RS485
Description
Hydrogen Sulfide detector-transmitter E2638-H2S is a member of new PluraSens® family of multifunctional measurement instruments.
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 electrochemical gas sensor with excellent repeatability, stability and long lifetime.
Two relays with closing contact (optional) may be used for remote signalling or concentration control. Two alarm set-points are user settable.
Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.
Technical Data
| Calibration | hydrogen sulfide H2S |
| Sensor type | electrochemical |
| Sampling method | diffusion |
| Detection range | 0...100 ppm H2S |
| 0...2000 ppm H2S | |
| 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 | |
| Default alarm set-points | 10 ppm / 20 ppm H2S |
| Enclosure | grey ABS plastic, wall mount, IP65 |
| Dimensions | H90 × W145 × D55 mm |
| Operating conditions | -30...+50 °C, 15...90 %RH |