Features
- Humidity compensated electrochemical sensor
- Range 0...10 / 0...200 / 0...1500 ppm C2H4
- Resolution 0,1 / 1 / 1 ppm C2H4
- Two SPST relays option
- 2 × 4-20 mA or 0-10 V, RS485
Description
Ethylene detector-transmitter E2638-C2H4 is a member of new PluraSens® family of multifunctional measurement instruments.
Applications include chemical and polymer industry, agriculture, fruit storage and ripening and other areas requiring precise measurement of ethylene concentration.
The instrument utilises a fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime. Due to a special technical solution for humidity compensation (available as an option), the detector may be used even at humidity levels up to 100% RH.
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 | ethylene C2H4 |
| Sensor type | electrochemical |
| Sampling method | diffusion |
| Detection range | 0...10 ppm C2H4 |
| 0...200 ppm C2H4 | |
| 0...1500 ppm C2H4 | |
| Resolution | 0,1 / 1 / 1 ppm C2H4 |
| 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), |
| Enclosure | grey ABS plastic, wall mount, IP65 |
| Dimensions | H90 × W145 × D55 mm |
| Operating conditions | -20...+50 °C, 15...90 %RH |
| with humidity compensation up to 100 %RH |
