DMT242 Dew Point Transmitter measures dew point with long-term measurement stability ensured by the patented self-calibration procedure
The DMT242 is a dew‑point transmitter designed for a wide range of industrial processes. It features a DRYCAP® polymer sensor, auto‑calibration, and a robust housing that meets IP65/NEMA 4 protection standards.
This manual provides step‑by‑step instructions for mounting, wiring a three‑wire connector, configuring the RS‑232 serial interface, performing calibration, and routine maintenance, along with technical specifications and warranty information. This manual is written in French.
| Operating voltage | 17‑35 VDC |
|---|---|
| Dew‑point accuracy | ±2 °C |
| Analog output | 4 mA … 20 mA |
| Analog output resolution | 0.002 mA |
| Temperature sensitivity | 0.0008 mA/°C |
| Maximum supply current | 220 mA @ 24 VDC |
| Protection rating | IP65 (NEMA 4) |
| Relative humidity range | 0 % … 100 % RH |
| Pressure range | 0 bar … 20 bar |
Calibration is recommended every two years, and on‑site checks can be performed with a reference sensor.
The RS‑232 interface defaults to 2400 baud, no parity, 8 data bits, and 1 stop bit.
The analog output is a 4 mA to 20 mA current loop.