VEGA VEGABAR 52 4 … 20 mA User Manual
Page 45
45
10 Supplement
VEGABAR 52 • 4 … 20 mA
36716-EN-130321
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
8)
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):
Ʋ In the compensated temperature
range 0 … +100 °C (+32 … +212 °F)
< (0.1 % + 0.1 % x TD)
Ʋ Outside the compensated tempera-
ture range
< (0.15 % + 0.15 % x TD)
Thermal change, current output
Applies also to the analogue 4 … 20 mA current output and refers to the set span.
Thermal change, current output
< 0.05 %/10 K, max. < 0.15 %, each with -40 … +80 °C
(-40 … +176 °F)
8)
Incl. non-linearity, hysteresis and non-repeatability.