Specifications; Accuracy Specifications; Measuring Range - WIKA GDT-20 Manual De Instrucciones

9. Specifications

9. Specifications

Accuracy specifications

EN
Accuracy
Dew point
Density
Temperature
Pressure
Long-term drift per IEC 61298-2
Temperature
Pressure
Dew point

Measuring range

Dew point at atmospheric pressure
Density
Temperature
Pressure at 20 °C [68 °F]
Pressure
Burst pressure
Overload limit
Pressure reference
Output signal
Signal type
Retrievable measured
values
Density
Temperature
Absolute pressure
Humidity
Dew point
46
The specifications only valid for pure, gaseous SF
→ See graphic in Annex
Span T - T < 60 K
gas d
Span T - T < 80 K
gas d
±0.6 %, ±0.35 g/litre (-40 ... 80 °C [-40 ... +176 °F])
±1 K
-40 ... < 0 °C [-40 ... +32 °F]
0 ... 80 °C [32 ... 176 °F]
≤ ±0.1 % of span/year
≤ ±0.05 % of span/year
≤ ±0.5 % of span/year
-60 ... +40 °C [-76 ... +104 °F] T
0 ... 60 g/litre (8.87 bar abs. SF₆ gas at 20 °C [68 °F])
-40 ... +80 °C [-40 ... +176 °F]
0 ... 8.87 bar abs. SF₆ gas
0 ...16 bar abs.
52 bar abs.
Up to 30 bar abs.
Absolute
Modbus output

Measured values with alternative units can be retrieved directly in the
Modbus registers.

g/litre, kg/m
3
°C, °F, K
mbar, Pa, kPa, MPa, psi, N/cm
ppm ppm
v, w
°C at tank pressure
■
°C at atmospheric pressure
■
WIKA operating instructions transmitter, models GDT-20 and GDHT-20
6
Measured value deviation < ±2 K
Measured value deviation < ±3 K
±0.2 %, ±32 mbar
±0.06 %, ±10 mbar
d
, bar
2