CLIMATE TRANSMITTER PFT28Ka - 2 Pages

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CLIMATE TRANSMITTER PFT28Ka

Catalog excerpts

CLIMATE TRANSMITTER PFT28Ka Measurement of temperature and relative humidity Digital signal transmission from the sensor to the evaluation electronics Response time of a few seconds Easy interchangeability of the sensor Alphanumeric LCD display 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 Calculation and display of dew point temperature, enthalpy wet bulb temperature and absolute humidity The transducer PFT28Ka converts the measured variables of temperature and relative humidity into the following parameters: dewpoint temperature, absolute humidity, moisture ball temperature and enthalpy. The device has two analog outputs: Output 1 supplies the temperature signal and one of four further measured variables can be applied to output 2 via two-pole DIP switches. Ausgang device has a two-line alphanumeric display. For direct display of the measured value, measured value and unit, the 1: 15...30 Vdc Temperatur Different versions are available: A room sensor for wall mounting, a duct sensor for installation in a ventilation duct and a cable management variant with 2 m cable. In both versions, the sensor tube is installed directly on the housing. The output signals can be switched from 0/2 ... 10 V Ausgang 2: to 0/4 ... 20 mA with a plug-in bridge. The device is supplied with 15 ... 30 Vdc or 24 Vac. gewählte Messgröße Connections Output 2: selected measured variable Supply voltage 15...30 Vdc or 24 Vac (±15%) Output 1: 0/2...10 V or 0/4...20 mA Output 2: 0/2...10 V or 0/4...20 mA Mounting flange MF-M90

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Relative Humidity: Resolution: Characteristic: Response time: Long term stability: Reproducibility: Tolerance: Temperature: Resolution: Response time: Reproducibility: Tolerance: Operating mode: Measuring medium: Sensor: Measuring range: Special measuring range: Operation temperature range: Storage temperature: linear (digital linearization) approx. 4 seconds (63% time, typical < 1 % RH per year Standard sensor: ± 0.1 % RH ± 3,5 % RH at 30...70 % RH ± 5,0 % RH at 00...29 % RH ± 5,0 % RH at 71...100 % RH 14 Bit slightly moved air) Sensor with narrowed tolerance: approx. 20 seconds Standard...

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