Measuring temperature and relative humidity with a „single-chip“-sensor Fast response time Digital transmission from sensor to the evaluation electronics Operational use temperature -30...+50 °C Operational use humidity 0...100 % Additional computed values: dew point temperature, absolute humidity, wet bulb temperature and enthalpy Analogue outputs 0...10 V or 4...20 mA Sensor interchangeability without need for re-calibration Exchange sensor available separately Supply voltage 15...30 Vdc or 24 Vac Protection class IP 65 Transmitter PFT25K as duct sensor The climate transmitter PFT25 converts the directly measured values temperature and relative humidity into often used climatic values dew point temperature, absolute humidity, wet bulb temperature and enthalpy by digital calculation. The device has two analogue outputs, output 1 is always set to temperature, whilst the second output can be set to 4 further values by a two stage dip-switch. The design of the PFT25 corresponds to the transmitter PFT22. Specifications Sensor: Transmitter PFT25R as door sensor with 2 x 0...10 V output single-chip sensor for humidity and temperature with digital signal transmission and calibration memory on the chip. Temperature: Relative humidity: Output 2 is selectable to: Relative humidity: or Absolute humidity: Wet bulb temperature: Dew point: Enthalpy: Sensor: Special measuring range: Absolute humidity: All measured and calculated values are shown with a resolution of 12 bits. For the calculation, a mean air pressure of 1000 hPa is used. To achieve maximum accuracy, the location of medium height and air pressure are given on the spot. Transmitter PFT25R as door sensor with 2 x 4...20 mA output Output 2 - selectable values DIP-switch 1off 2off 1on 2off 1off 2on 1on 2on Output relative humidity dew point Wet bulb temperature Enthalpy

CLIMATE TRANSMITTER PFT25 Dimensions (mm) PFT25K 67 0...10 Connections - 2 xV supply voltage Dimensions (mm) PFT25R with 0...10 V output Dimensions (mm) PFT25R with 4...20 mA output Item no. Humidity & temperature transmitter PFT25K Output 1: Temperature -30...0...+50 °C Output 2: Customer-specific presetting required! Housing: pastic ABS light grey, protection class IP 65 according EN 60529, tube stainless steel Accessories: mounting flange Output: 2 x 0...10 V, 3-wire technology Supply voltage: 15...30 Vdc or 24 Vac Output: 2 x 4...20 mA, 2-wire technology Supply voltage: 13...30 Vdc Humidity...