VEGA VEGABAR 54 Foundation Fieldbus - climate compensated - Manual (Page 49)

49
10 Supplement
VEGABAR 54 • Foundation Fieldbus - climate compensated
36791-EN-130321
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 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
Influence of the product or ambient temperature
Average temperature coefficient of the zero signal
Applies to digital interfaces (HART, Profibus PA, Foundation Fieldbus) as well as to analogue
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 coef-
ficient of the zero signal, in
the compensated temper-
ature range 0 … +100 °C
(+32 … +212 °F), reference
temperature 20 °C (68 °F)
Average temperature co-
efficient of the zero signal,
outside the compensated
temperature range
0 … 0.2 bar/0 … 20 kPa 0 … 3 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K
0 … 0.4 bar/0 … 40 kPa 0 … 6 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K
0 … 1 bar/0 … 100 kPa 0 … 15 psig < (0.02 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K
0 … 2.5 bar/0 … 250 kPa 0 … 35 psig < (0.02 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K
0 … 5 bar/0 … 500 kPa 0 … 70 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
0 … 10 bar/0 … 1000 kPa 0 … 150 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
0 … 25 bar/0 … 2500 kPa 0 … 350 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
0 … 60 bar/0 … 6000 kPa 0 … 900 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 0 bar/-100 … 0 kPa -15 … 0 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 1.5 bar/-100 … 150 kPa -15 … 25 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 5 bar/-100 … 500 kPa -15 … 70 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 10 bar/-100 … 1000 kPa -
15 … 150 psig
< (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 25 bar/-100 … 2500 kPa -
15 … 350 psig
< (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-1 … 60 bar/-100 … 6000 kPa -
15 … 900 psig
< (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K
-0.1 … 0.1 bar/-10 … 10 kPa -
1.5 … 1.5 psig
< (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K
-0.2 … 0.2 bar/-20 … 20 kPa -3 … 3 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K
-0.5 … 0.5 bar/-50 … 50 kPa -7 … 7 psig < (0.05 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K
11) Incl. non-linearity, hysteresis and non-repeatability.