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data sheet PFT25 series - 2 Pages

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Arthur Grillo CLIMATE TRANSMITTER PFT25 □ 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 □ Analogue outputs 0...10 V or 4...20 mA □ Sensor interchangeability without need for re-calibration □ Protection class IP 65 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. 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: Measured material: Sensor: Transmitter PFT25R as door sensor with 2 x 4...20 mA output Measuring unit: Output signal 1: Output signal 2: Resolution: Response time: Reproducibility: Tolerance: Measuring ranges: Characteristics: Measuring mode Temperature and humidity Single-chip sensor for humidity and temperature with digital signal transmission and calibration memory on the chip Temperature in ° C; relative humidity in % Temperature Relative humidity, Dew point, wet bulb temperature, enthalpy; (Special range - absolute humidity) Output 1: TEMPERATURE 14 bit Approx. 20 seconds ± 0,1 °C ±0,5 °C at 25 °C; ±2 °C at -40 °C, ±3 °C at +120 °C; narrower tolerance possible -30...+50 °C Linear Resolution: Response time: Reproducibility: Tolerance: Measuring ranges * Measuring range selection: Transmitter PFT25R Characteristics: as door sensor with 2 x 0...10 V output Abmessungen: Anschlusskopf: Elektrischer Anschluss: Channel sensor Power supply: Output current: Output 2: SELECTABLE 12 bit Aprox. 4 seconds (63 %-time, slightly moving air) Typical < 1 % r.h. / year ± 0,1 % r.h. Temperature: T = -30...+50°C, 0...50°C, 0...100°C; Relative humidity: r.h. = 0...100%; Dew point: dp = -30...+50°C; Wet bulb temperature: tf = -30...+50°C; Enthalpy: E = 0...200kJ/kg; Absolute humidity: a.h. = 0...50g/kg 4 selectable measuring ranges via DIP switch Linear (digital linearization) PHYSICALLY: See drawings Plastic ABS 7 Connection terminals Sensor tube: stainless steel, 11 mm 0 Protection class: IP 65 according to EN 60529 Cable gland: M16 x 1.5 Sensor tube: double-walled sensor tube with wall holder Protection class: IP 65 according to EN 60529 Cable gland: M16x1.5 Plastic housing for mounting on a flush-mounted switch box or surface-mounted wall mounting ELECTRONIC: 15 ... 30 Vdc or 24 Vac in three-wire circuit; 13 ... 30 Vdc in two-wire circuit 2 x 0 ... 10 V in three-wire circuit; 2 x 4 ... 20 mA in two-wire circuit Arthur Grillo GmbH • Am Sandbach 7 • 40878 Ratingen • phone 0 21 02 - 47 10 22 • fax 0 21 02 - 47 58 82 www.grillo-messgeraete.de/en • Email: info@grillo-messgeraete.de • web shop: www.sensor-store.de

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CLIMATE TRANSMITTER PFT25 Mounting flange MF-M90 Output 2 - selectable values Output relative humidity dew point Wet bulb temperature Enthalpy M16x1,5 Dimensions (mm) PFT25R with 0...10 V output rel. Feuchte 0...10 V Connections - 2 x supply voltage Dimensions (mm) PFT25R with 4...20 mA output Temperature 4...20 mA Rel. humidity 4...20 2 Connections -mAx power output 13...30 Vdc Temperatur 4...20 mA rel. Feuchte 4...20 mA Item no. Humidity & temperature transmitter PFT25K Output 1: Temperature -30...0...+50 °C Output 2: Customer-specific presetting required! Housing: pastic ABS light grey,...

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data sheet PFT25 series - 2 Pages

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