VEGA VEGACAL 69 Foundation Fieldbus User Manual
Page 37
37
10 Supplement
VEGACAL 69 • Foundation Fieldbus
31180-EN-130917
Input variable
Measured variable
Level of liquids preferably in non-conductive vessels
Measuring principle
phase-selective admittance processing (PSA)
Measuring range
0 … 3000 pF
Measuring frequency
270 kHz
Accuracy (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature
+18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Temperature error
Ʋ < 120 pF
< 1 pF
Ʋ > 120 pF
1 % of the current measured value
Linearity error
< 0.25 % of the complete measuring range
Ambient conditions
Ambient, storage and transport tempera-
ture
-40 … +80 °C (-40 … +176 °F)
Process conditions
Process pressure
-1 … 2 bar/-100 … 200 kPa (-14.5 … 29 psig)
Process temperature
Ʋ Flange of PTFE
-40 … +100 °C (-40 … +212 °F)
Ʋ Flange of PP
0 … +60 °C (+32 … +140 °F)
45°C
100°C
1
-1
0
2
0°C
-40°C
1
2
Fig. 23: Process pressure - Process temperature (flange of PTFE)
1 Process pressure
2 Process temperature