VEGA VEGABAR 67 Foundation Fieldbus - climate compensated - Manual (Page 52)

52
10 Supplement
VEGABAR 67 • Foundation Fieldbus - climate compensated
39446-EN-130321
Nominal range Overload capacity, max.
pressure
Overload capacity, min. pres-
sure
0 … +6 psig +430 psig -15 psig
0 … +15 psig +500 psig -15 psig
0 … +35 psig +700 psig -15 psig
0 … +70 psig +950 psig -15 psig
0 … +150 psig +1300 psig -15 psig
0 … +350 psig +1900 psig -15 psig
0 … +900 psig +2900 psig -15 psig
Reference conditions and actuating variables (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 psi)
Determination of characteristics limit point adjustment according to DIN 16086
Characterstic curve Linear
Reference installation position upright, diaphragm points downward
Influence of the installation position < 5 mbar/0.5 kPa (0.07 psig)
Deviation determined according to the limit point method according to IEC 60770 11)
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
Ʋ Turn down 1 : 1 up to 5 : 1 < 0.1 %
Ʋ Turn down > 5 : 1 < 0.02 % x TD
Influence of the product or ambient temperature
Average temperature coefficient of the zero signal and the 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.
Nominal measuring range
in bar/kPa
Nominal measuring
range in psig
Average temperature co-
efficient of the zero signal
and the output span, in
the compensated temper-
ature range 0 … +100 °C
(+32 … +212 °F), refer-
ence temperature 20 °C
(68 °F)
Average temperature co-
efficient of the zero signal
and the output span, out-
side the compensated
temperature range
0 … 0.2 bar/0 … 20 kPa 0 … 3 psi < (0.15 + 0.4 x TD)% < (0.15 + 0.6 x TD)%
0 … 0.4 bar/0 … 40 kPa 0 … 6 psig < (0.15 + 0.4 x TD)% < (0.15 + 0.6 x TD)%
0 … 1 bar/0 … 100 kPa 0 … 15 psig < (0.1 + 0.2 x TD)% < (0.1 + 0.3 x TD)%
11) Incl. non-linearity, hysteresis and non-repeatability.