
57
11 Supplement
VEGABAR 81 • 4
… 20 mA
45025-EN-140228
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 ratio nominal measuring
range/set span.
Long-term drift of the zero signal
2)
< (0.1 % x TD)/year
Ambient conditions
Version
Ambient temperature
Storage and transport temper-
ature
Standard version
-40
… +80
°C (-40
… +176 °F)
-60
… +80
°C (-76
… +176 °F)
Version IP 66/IP 68 (1 bar)
-20
… +80
°C (-4
… +176 °F)
-20
… +80
°C (-4
… +176 °F)
Version IP
68 (25
bar) with connec
-
tion cable PUR
-20
… +80
°C (-4
… +176 °F)
-20
… +80
°C (-4
… +176 °F)
Version IP
68 (25
bar), connection
cable PE
-20
… +60
°C (-4
…
+140
°F)
-20
… +60
°C (-4
…
+140
°F)
Process conditions
Product temperature depending on isolating liquid and instrument version
Isolating liquid
p
abs
> 1 bar/14.5 psi
p
abs
< 1 bar/14.5 psi
Version for oxygen ap-
plications
silicone oil KN2.2
-40
…
+150
°C (-
40
… +302 °F)
-40
…
+150
°C (-
40
… +302 °F)
-40
… +60
°C (-
40
…
+140
°F)
Silicone oil KN2.2 with
cooling element
-40
… +200
°C (-
40
… +392 °F)
-40
…
+150
°C (-
40
… +302 °F)
-40
… +60
°C (-
40
…
+140
°F)
Silicone oil KN2.2 with
capillaries 2 m, 3 m
-40
… +200
°C (-
40
… +392 °F)
-40
…
+150
°C (-
40
… +302 °F)
-40
… +60
°C (-
40
…
+140
°F)
Silicone oil KN17
-90
… +180
°C (-
130 …
+356
°F
-90
… +80
°C (-
130 … +176 °F)
-90
… +60
°C (-
130 …
+140
°F)
High temperature oil KN32
with cooling element
-10
… +300 °C
(+14
…
+572
°F)
-10
… +200 °C
(+14
… +392 °F)
-10
… +60 °C
(+14
…
+140
°F)
High temperature oil
KN3.2 with cooling ele-
ment
-10
… +330 °C
(+14
… +626 °F)
+-10
… +200 °C
(+14
… +392 °F)
-10
… +60 °C
(+14
…
+140
°F)
High temperature oil
KN3.2 with cooling ele-
ment 300 mm
-10
…
+400
°C
(+14
…
+752
°F)
+-10
… +200 °C
(+14
… +392 °F)
-10
… +60 °C
(+14
…
+140
°F)
High temperature oil KN32
with capillaries 1 m, 2 m
or 5
m
-10
…
+400
°C
(+14
…
+752
°F)
+-10
… +200 °C
(+14
… +392 °F)
-10
… +60 °C
(+14
…
+140
°F)
Halocarbon oil KN21
-40
…
+150
°C (-
40
… +302 °F)
-40
… +80
°C (-
40
… +176 °F)
-
Halocarbon oil KN21 for
oxygen applications
-40
… +60 °C
(40
…
+140
°F)
-40
… +60 °C
(40
…
+140
°F)
-40
… +60
°C (-
40
…
+140
°F)
Silicone-free liquid KN70
-40
… +70
°C (-
40
…
+158
°F)
No vacuum
-40
… +60
°C (-
40
…
+140
°F)
2)
Depending on which chemical seal is used, the values can also be higher.