Features
- Stable long-life pellistor sensor
- Range 0...15% vol. (0…100% LEL)
- Resolution 0.1% vol. or 1% LEL
- Two SPST relays option
- 2 × 4-20 mA or 0-10 V, RS485
- Attached or remote sensor
- LCD indicator option
- Easy to install IP65 enclosure
Description
Ammonia transmitter E2618-NH3-P is a member of the PluraSens® family of multifunctional measurement instruments.
One of the most common applications is detection of explosive Ammonia concentrations in refrigeration machinery rooms.
The instrument utilizes a fully calibrated and temperature compensated pellistor (catalytic) gas sensor with excellent repeatability, stability and long lifetime.
Two relays with closing contact (optional) may be used for remote signaling 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 | Ammonia NH3 |
| Sensor type | Pellistor (catalytic bead) |
| Sampling method | Diffusion |
| Detection range | 0...15% vol. (0…100% LEL) |
| Resolution | 0.1% vol. or 1% LEL |
| Response time T90 | ≤10 s |
| Sensor lifetime | > 3 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 ABS plastic, wall mount, IP65 |
| Dimensions | H90 × W145 × D55 mm |
| Operating conditions | -10...+50 °C, 0...95% RH |