Description

- Measurement of temperature and relative humidity - Digital signal transmission from sensor to evaluation electronics - Response time of a few seconds - Easy exchangeability of the sensor - Analog outputs 0/2...10 V or 0/4...20 mA - Supply voltage 15...30 Vdc or 24 Vac (±15%) - Compact plastic housing Protection class IP54; UL 94 HB - Measuring range relative humidity 0...100 % (short-term condensation possible) - Measuring range Temperature -30...+50 °C, 0...50 °C, 0...100 °C The transmitter PFT28Ka converts the measured quantities temperature and relative humidity into the quantities: Dew point temperature, absolute humidity, wet bulb temperature and enthalpy. The device has two analog outputs: output 1 supplies the temperature signal and output 2 can be connected to one of four other measured variables via two-pole DIP switches. The device has a two-line alphanumeric display for direct display of the measured variable, measured value and unit.

Air conditioning, aeration and ventilation equipment
  • climate transmitter
  • climate

Product features

Resolution: 12 Bit
Characteristic: linear (digital linearization)
Response time: approx. 4 seconds (63% time, slightly moved air)
Long term stability: typical < 1 % RH per year
Reproducibility: ± 0.1 % RH
Tolerance: ± 3,5 % RH @ 30...70 % RH, ± 5,0 % RH @ 00...29 % RH, ± 5,0 % RH @ 71...100 % RH
Reproducibility: ± 0.1 % RH
Tolerance: ± 2,0 % RH @ 10...90 % RH, ± 2,0 % RH @ 10...90 % RH, ± 4,0 % RH @ 91...100 % RH
Resolution: 14 Bit
Characteristic: linear
Response time: approx. 20 seconds
Reproducibility: ± 0.1 °C
Tolerance: ± 0.5 °C @ 25 °C, ± 2,0 °C @ -40 °C, ± 3,0 °C @ +120 °C

Additional product literature

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