Features
- Stable long-life metal-oxide sensor
- Range 0...100% LEL
- Resolution 0,1% LEL
- Two SPST relays
- 2 × 4-20 mA or 0-10 V, RS485
Description
Combustible gases detector-transmitter E2611-LEL is a member of new PluraSens® family of multifunctional measurement instruments.
Applications include underground parkings, boiler houses, battery charging rooms, kitchens, and other confined spaces, where potentially explosive concentration of combustible gases 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
| Detected gases | hydrogen, methane, acetylene, propane, butane |
| Default calibration | methane CH4 |
| Sensor type | metal-oxide semiconductor |
| Sampling method | diffusion |
| Detection range | 0...100% LEL |
| Resolution | 0,1% LEL |
| 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 | -40...+70 °C, 0...95 %RH |