Series DE38 – DE39 — multifunction differential pressure transmitters

• DE38 Δp measurement: 0-400 mbar to 0-6 bar • DE39 Δp measurement: 0-6 bar to 0-40 bar • For non-corrosive gases and liquids • Output: 0...4-20 mA • 2 dry or PNP contacts • ATEX versions, zones 2-22 • LCD display The DE38 and DE39 differential pressure transmitters are designed for monitoring compressors, filters and extraction systems, for flow measurement and for level control. They suit clean, non-corrosive gases and liquids. Two ATEX versions complete the range for applications in explosive atmospheres (gas / zone 2) or (dust / zone 22). DE 38: The principle is based on the movement of a diaphragm that drives an inductive displacement sensor. The sensor turns that movement into a continuous signal, which is then converted. The electronics built into the device convert the deflection into a standardised signal, a display reading or a relay output, as required. DE 39: The principle uses 2 ceramic sensors measuring a P+ and a P- pressure, together with a microprocessor. The system indicates the P+ and P- pressures as well as the Δp.