WIKA GD-20 Series Operating Instructions Manual page 31

9. Specifications
Suitable for the following gases
SF
■
6
N
■
2
CF
■
4
O
■
2
CO
■
2
Novec 4710
■
He
■
Ar
■
Gas mixtures and components can be individually configured and combined at the
factory. The calculation is based on the physical principle of the partial pressure method.
The gas mixture cannot be changed subsequently.
Output signal
Output signal
Voltage supply
Power consumption
Model GD-20-A
Model GD-20-D
Maximum permissible load R
(model GD-20-A)
Time response
Settling time
1)
Switch-on time
2)
1) E.g. with any sudden pressure spikes
2) Time after switching on until the first measured value is output.
Output parameters
Output parameters digital versions (model GD-20-D)
Absolute pressure at 20 °C [68 °F]: bar, MPa, kPa, psi, Pa, N/cm
■
Gauge pressure based on 1,013 mbar at 20 °C [68 °F]: bar, MPa, kPa, psi, Pa, N/cm
■
Density: g/litre, kg/m
■
Temperature: °C, °F, K
■
Absolute pressure: bar, MPa, kPa, psi, Pa, N/cm
■
Gauge pressure based on 1,013 mbar: bar, MPa, kPa, psi, Pa, N/cm
■
Output parameters analogue version (model GD-20-A)
Absolute pressure at 20 °C [68 °F] as 4 ... 20 mA current signal
WIKA operating instructions gas density sensor, model GD-20
DC 10 ... 30 V
≤ 0.75 W
≤ 0.45 W
R ≤ (U - 9.5 V) / 0.023 A with R
A A B
< 10 ms
≤ 500 ms
3
in Ohm and U
A
2
2
2
EN
in V
B
2
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