Vega VEGABAR 66 Operating Instructions Manual page 55

Nominal range
0 ... +350 psig
0 ... +900 psig
Absolute pressure
0 ... 15 psi
0 ... 35 psi
0 ... 70 psi
0 ... 150 psi
0 ... 350 psi
Reference conditions and actuating variables (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature
Ʋ Relative humidity
Ʋ Air pressure
Determination of characteristics
Characterstic curve
Reference installation position
Influence of the installation position
Deviation determined according to the limit point method according to IEC 60770
Applies to the digital signal output (HART, Profibus PA, Foundation Fieldbus) as well as to the
analogue current output 4 ... 20 mA and refers to the set span. Turn down (TD) is the ratio nominal
measuring range/set span.
Deviation
Ʋ Turn down 1 : 1 up to 5 : 1
Ʋ Turn down > 5 : 1
Influence of the medium 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 the
analogue 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)
Ʋ Outside the compensated tempera-
ture range
Thermal change, current output
Applies also to the analogue 4 ... 20 mA current output and refers to the set span.
Incl. non-linearity, hysteresis and non-repeatability.
11)
VEGABAR 66 • Foundation Fieldbus
Overload capacity, max.
pressure
+1900 psig
+2900 psig
500 psi
700 psi
900 psi
1300 psi
1900 psi
+15 ... +25 °C (+59 ... +77 °F)
45 ... 75 %
860 ... 1060 mbar/86 ... 106 kPa (12.5 ... 15.4 psig)
Limit point adjustment according to IEC 61298-2
Linear
upright, diaphragm points downward
< 0.2 mbar/20 Pa (0.003 psig)
< 0.1 %
< 0.02 % x TD
< 0.05 %/10 K x TD
typ. < 0.05 %/10 K x TD
10 Supplement
Overload capacity, min. pres-
sure
-15 psig
-15 psig
0 psi
0 psi
0 psi
0 psi
0 psi
11)
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