58
10 Supplement
VEGABAR 66 • 4 … 20 mA/HART - climate compensated
36738-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
…
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)%
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. Specifications
refer to the set span. Turn down (TD) is the relation nominal measuring range/set span.
Nominal measuring range in bar/kPa
Nominal measuring
range in psig
Long-term drift of the zero signal
0
…
0.2
bar/0
…
20
kPa
0
…
3
psig
<
(1
%
x
TD)/year
0
…
0.4
bar/0
…
40
kPa
0
…
6
psig
<
(1
%
x
TD)/year
0
…
1
bar/0
…
100
kPa
0
…
15
psig
<
(0.25
%
x
TD)/year
0
…
2.5
bar/0
…
250
kPa
0
…
35
psig
<
(0.25
%
x
TD)/year
0
…
5
bar/0
…
500
kPa
0
…
70
psig
<
(0.1
%
x
TD)/year
0
…
10
bar/0
…
1000
kPa
0
…
150
psig
<
(0.1
%
x
TD)/year
0
…
25
bar/0
…
2500
kPa
0
…
350
psig
<
(0.1
%
x
TD)/year