Features
- Easy to install robust enclosure
- Range 0...25 %vol O2
- Two analog outputs settable to 4-20 mA or 0-10 V
- RS485 Modbus RTU digital interface
- Relay option
- Remote probe option
Description
Oxygen detector-transmitter E2648-O2 is a member of new PluraSens® family of multifunctional measurement instruments.
The instrument may be used to prevent critical decrease of O2 concentration as well as to control the absence of the oxygen in gas mixtures.
The instrument utilises novel fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime.
To connect the detector to safety or building automation systems use two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol. We recommend to set the output scale within 20-100% of the detection range.
Two relays with closing contact (option) may be used for remote signalling or ventilation control. Default alarm set-points are 19,5% and 18,0% O2.
The device is available with either attached or remote sensor probe (default cable length is 3 m).
Technical data
| Calibration | Oxygen O2 |
| Sensor type | Electrochemical |
| Sampling | Diffusion |
| Detection range | 0...25 %vol O2 |
| Resolution | 0,01 %vol O2 |
| Non-linearity | < 0,2 %vol O2 |
| 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 | |
| Enclosure | die-cast aluminium, wall mount, protection class IP66 |
| Dimensions | H120 × W125 × D57 mm |
| Operating conditions | -30...+50 °C, 15...90% RH, no condensation |
