7 differential pressure measurement, 7 differential pressure measurement – VEGA VEGADIF 55 4 … 20 mA_HART User Manual
Page 74
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7
.7 Differential pressure measurement
VEGADIF
55
is used in all versions for differential pressure
measurements.
Note:
T
he VEGADIF 55 with cell isolating diaphragms and capillary lines is
immediately ready for adjustment.
B
efore you adjust VEGADIF 55 in basic version, you have to clean the
effective pressure lines and the instrument must be filled with the
medium.
+
–
I
II
+
6
7
3
2
4
A
B
Fig. 69: Preferred installation for gases
I
VEGADIF 55
II
Three-fold valve block
2
, 4 Inlet valves
3
Breather valve
6
, 7 Vent valves on VEGADIF 55
A, B Block valves
Preparations
74
VEGADIF
55 • 4 … 20
mA/HART
7 S
et up
31731
-EN
-081119
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