VEGA VEGABAR 67 4 … 20 mA_HART - climate compensated - Manual (Page 58)

58
10 Supplement
VEGABAR 67 • 4 ... 20 mA/HART - climate compensated
39444-EN-130321
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 … 2.5 bar/0 … 250 kPa 0 … 35 psig < (0.1 + 0.2 x TD)% < (0.1 + 0.3 x TD)%
0 … 5 bar/0 … 500 kPa < (0.05 + 0.1 x TD)% < (0.1 + 0.15 x TD)% 0 … 10 bar/0 … 1000 kPa
0 … 150 psig < (0.05 + 0.1 x TD)% < (0.1 + 0.15 x TD)% 0 … 25 bar/0 … 2500 kPa
0 … 350 psig < (0.05 + 0.1 x TD)% < (0.1 + 0.15 x TD)%
Thermal change of the 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)
0,15 %
-0,15 %
-40°C -20°C
20°C
40°C 60°C 80°C
Fig. 33: Thermal change, current output
Long-term stability (according to DIN 16086 and IEC 60770-1)
Applies to digital HART interface as well as to analogue current output 4 … 20 mA under refer-
ence conditions. Specifications refer to the set span. Turn down (TD) is the relation nominal meas-
uring range/set span.
Long-term drift of the zero signal:
Ʋ For one year < 0.05 % x TD
Ʋ For five years < 0.1 % x TD
Ʋ For ten years < 0.2 % x TD
Ambient conditions
Ambient, storage and transport temperature
Ʋ Version with connection tube -40 … +80 °C (-40 … +176 °F)
Ʋ Version with suspension cable FEP,
PUR
-20 … +80 °C (-4 … +176 °F)
Ʋ Version with suspension cable PE -20 … +60 °C (-4 … +140 °F)