VEGA VEGABAR 52 Profibus PA User Manual
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10 Supplement
VEGABAR 52 • Profibus PA
36719-EN-130321
Reference conditions and actuating variables (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature
+15 … +25 °C (+59 … +77 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Determination of characteristics
Limit point adjustment according to IEC 61298-2
Characterstic curve
Linear
Reference installation position
upright, diaphragm points downward
Influence of the installation position
< 0.2 mbar/20 Pa (0.003 psig)
Deviation determined according to the limit point method according to IEC 60770
5)
Applies to the digital signal output (HART, Profibus PA, Foundation Fieldbus) as well as to ana-
logue current output 4 … 20 mA and refers to the set span. Turn down (TD) is the ratio nominal
measuring range/set span.
Deviation with absolutely flush process fittings EV, FT
Ʋ Turn down 1 : 1 up to 5 : 1
< 0.05 %
Ʋ Turn down > 5 : 1
< 0.01 % x TD
Deviation with version 0.075 %
Ʋ Turn down 1 : 1 up to 5 : 1
< 0.075 %
Ʋ Turn down > 5 : 1
< 0.015 % x TD
Deviation with version 0.1 %
Ʋ Turn down 1 : 1 up to 5 : 1
< 0.1 %
Ʋ Turn down > 5 : 1
< 0.02 % x TD
Deviation with version 0.2 %
Ʋ Turn down 1 : 1 up to 5 : 1
< 0.2 %
Ʋ Turn down > 5 : 1
< 0.04 % x TD
Deviation with absolute pressure measuring range 0.1 bar
Ʋ Turn down 1 : 1 up to 5 : 1
< 0.25 %
Ʋ Turn down > 5 : 1
< 0.05 % x TD
Influence of the product or ambient temperature
Thermal change zero signal and output span
Applies to the digital signal output (HART, Profibus PA, Foundation Fieldbus) as well as to ana-
logue current output 4 … 20 mA and refers to the set span. Turn down (TD) is the ratio nominal
measuring range/set span.
Thermal change zero signal and output span, reference temperature 20 °C (68 °F):
Ʋ In the compensated temperature
range 0 … +100 °C (+32 … +212 °F)
< (0.05 % + 0.1 % x TD)
Ʋ Outside the compensated tempera-
ture range
< (0.05 % + 0.15 % x TD)
Thermal change zero signal and output span with absolute pressure measuring range 0.1 bar,
reference temperature 20 °C (68 °F):
5)
Incl. non-linearity, hysteresis and non-repeatability.