Arthur Grillo PFT Series Bedienings- en installatie-instructies - Pagina 11
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Pagina afdrukken5.1.2 PFT22 - Selection of measured values
The selection of the temperature measuring range at output 1
Special measuring ranges are possible!
5.1.3 PFT25 - Selection of measured values
The selection of the temperature measuring range at output 2
DIP-switch
DIP no. 1
off
on
off
on
The absolute humidity measurement is possible on customer request (0...50.0 g/m³)
5.3 Selection options via the T -button (PFT28)
With the T-button (see Fig. 1), the various measured values can be switched through.
The first display-line always shows the temperature t (°C).
The DIP-switches No. 3 and No. 4 are used to select the measured value for the analog
output 2 and your selection is shown on the LCD displays second line. Via the T-button it is
possible to switch the second line of the LCD separately from the analog output. Holding
down the T-button changes the measured value on the LCD every second.
You can switch between:
1.) relative humidity
3.) wet bulb temperature
As long as the T-button is pressed, this sequence is repeated continuously. To confirm a
measured value, please release the T-button, when the desired measured variable is shown.
After selecting a measured variable the displayed measured value does not change even
the DIP-switches No. 3 and No. 4. are shifted. Your selection is retained as long as the
voltage supply is maintained.
DIP-switch
DIP no. 1
DIP no. 2
off
on
off
on
DIP no. 2
measuring range:
off
relative humidity
off
dew point temperature
on
wet bulb temperature
on
enthalpy
Doc.-no.: PFT_01_EN
range:
off
-40...+120°C
off
-30...+70°C
on
0...+100°C
on
0...+50°C
2.) dew point temperature
4.) enthalpy
Issue: 05/2017
OPERATION
rh
= 0...100 % rh
td
= -30...+50 °C
tf
= -30...+50 °C
E
= 0...200 kJ/kg
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