Features
- Stable long-life metal-oxide sensor
- Range 0...100% LEL CH4
- Resolution 0,1% LEL CH4
- Two SPST relays
- 2 × 4-20 mA or 0-10 V, RS485
Description
Methane detector-transmitter E2611-CH4 is a member of new PluraSens® family of multifunctional measurement instruments.
Applications include boiler houses, kitchens, and other confined spaces, where potentially explosive concentration of methane can accumulate.
The instrument utilises a fully calibrated metal-oxide semiconductor gas sensor with excellent repeatability, stability and long lifetime.
Two relays with closing contact may be used for remote signalling or ventilation control. Two alarm set-points are user settable. Internal buzzer gives sound alarms.
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 | methane CH4 |
| Sensor type | metal-oxide semiconductor |
| Sampling method | diffusion |
| Detection range | 0...100% LEL CH4 |
| Resolution | 0,1 %LEL CH4 |
| Sensor lifetime | > 5 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 | 2 × SPST relays (closing contact), |
| 250 VAC / 30 VDC, 5 A max | |
| Alarms | buzzer 85 dB |
| Default alarm set-points | 20% LEL / 50% LEL CH4 |
| Enclosure | light-grey ABS plastic with ventilation slots, IP20 |
| Dimensions | H85 × W85 × D37 mm |
| Operating conditions | -30...+70 °C, 0...95 %RH |