Relative humidity transmitter PFT25 series

wall-mountduct-mountdigital

• Measuring temperature and relative humidity with a „single-chip“-sensor • Fast response time • Digital transmission from sensor to the evaluation electronics • Additional computed values: dew point temperature, absolute humidity, wet bulb temperature and enthalpy • Sensor interchangeability without need for re-calibration 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 analog 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. 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. TECHNICAL SPECIFICATIONS: Operating mode: Messuring mode Medium: Temperature and Humidity Sensor: Single-chip sensor for humidity and temperature with digital signal transmission and calibration memory on the chip Measuring unit: Temperature Output signal 1: Relative humidity, Dew point, wet bulb temperature, enthalpy Output signal 2: (Special range – absolute humidity) OUTPUT 1: TEMPERATURE Resolution:14 bit Response time:Approx. 20 seconds Reproducibility:± 0,1 °C Characteristics:Linear