VEGA VEGADIF 55 4 … 20 mA_HART User Manual
Page 24
0,0
2,0
4,0
6,0
8,0
10,0
12,0
50 100
300 400
500 600
700
800 900 1000
mbar
m
200
2
1
3
4
Fig. 20: Diagram max. mounting height above the lower isolating diaphragm in
vacuum applications depending on the pressure on the isolating diaphragm on
the plus side
1
Vegetable oil
2
Silicone oil
3
High temperature oil
4
Inert oil
4
.6 Mounting instructions for seal with flange
mounting
1
2
Fig. 21: Mounting the versions with flange or isolating diaphragm
1
Diaphragm
2
Seal
4
.7 Heat insulation of instruments with flange
isolating diaphragm
VEGADIF
55
with unilateral flange isolating diaphragm must only be
isolated up to a certain height. The max. permissible isolating heigth is
marked on the instruments and applies to an isolating material with a
heat conductance ≤ 0.04 W/(m x K) and fa max. permitted ambient
24
VEGADIF
55 • 4 … 20
mA/HART
4 M
ounting
31731
-EN
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