Type DK Industrial version, duct version Optional display

dynamic MELA® humidity sensing element
• output of all hx values
• calibrated dModul for
humidity and temperature measurement
• in situ alignment
• easy to install
• operating temperatures up to 80°C

The core part of the D Series is the digital calibrated dModul, which processes the measurement values of relative humidity and temperature individually. The values are compared to the calibration values stored in the dModul and communicated digitally to the transmitter electronics, where they are processed to standardised current and voltage signals.

The housings of the industrial versions provide protection in accordance with IP 65. Only a single screw is required to close it securely.

D Series Sensors for Humidity and Temperature Measurement With calibrated dModul

dynamic MELA® humidity sensing element
• output of all hx values
• calibrated dModul for
humidity and temperature measurement
• in situ alignment
• easy to install
• operating temperatures up to 80°C

The core part of the D Series is the digital calibrated dModul, which processes the measurement values of relative humidity and temperature individually. The values are compared to the calibration values stored in the dModul and communicated digitally to the transmitter electronics, where they are processed to standardised current and voltage signals.

The housings of the industrial versions provide protection in accordance with IP 65. Only a single screw is required to close it securely.

Humidity/-temperature sensors

MELA® - humidity/-temperature sensors in this series are supplied with a robust aluminium die cast housing with an inox or aluminium sensor part to measure relative humidity or relative humidity and temperature in air and other non-aggressive gases for a working temperature range of up to 200°C

Humidity/-temperature sensors

MELA-Humidity/-temperature sensors in these series are used to measure relative humidity or temperature or relative humidity and temperature in air and other non-aggressive gases in explosion hazardous arears and in locations with inflammable dust. The sensors comprise a sensor part with a sintered filter mounted on a robust aluminium die-cast housing (transmitter part), both made of stainless steel. Connection to a non-intrinsically safe electric circuit for humidity (F*C3.Ex/8) and for temperature sensors (T*C3.Ex/8) is achieved with a 1-channel transmitter power supply unit and for the combined humidity and temperature sensors(K*C3.Ex/8) either with a 2-channel or with two 1-channel transmitter power supply units with galvanic isolation between input-/output circuits and power supply.

PM15P Modular Sensor for Humidity and Temperature with hx processor

The sensor PM15P measures the air humidity by means of a humidiy-dependant condenser. The capacitive Mela humidity measuring element, produced using thinfilm technology, consists of a base plate, on which the electrodes are housed and a hygroscopic polymer layer above it. The hygroscopic polymer layer absorbs water molecules from the medium to be measured (air) or releases them, thereby altering the capacity of the condenser.
The humidity or temperature values measured are calculated in the exchangeable PMU-P measuring head, with the calibration values stored there, and communicated on to the following electronic transmitter components as calibrated digital measuring values.

PM-V Sensor for Humidity and Temperature with hx Processor

PM-V sensors with integrated hx-processor measure humidity by means of a humidity-dependant condenser. The capacitive Mela humidity measuring element, produced using thinfilm technology, consists of a base plate, on which the electrodes are housed and a hygroscopic polymer layer above it. The hygroscopic polymer layer absorbs water molecules from the medium to be measured (air) or releases them, thereby altering the capacity of the condenser.

The humidity or temperature values measured are calculated in the? ? U? ? ? exchangeable PMU-V ? ? measuring head, with the calibration values stored there, and communicated on to the following electronic transmitter components as calibrated digital measuring values.