Installation
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
24
Hauser
4.3.6
Heat insulation – FMD77
The FMD77 must only be insulated up to a certain height. The maximum permitted
insulation height applies to an insulation material with a heat conductivity
0.04 W/
(m x K) and to the maximum permitted ambient and process temperature. The data were
determined under the most critical application "quiescent air".
A0025889
Fig. 23:
Maximum insulation height
1
Insulation material
Without insulation, the ambient temperature decreases by 5 K.
30 (1.18)
T
a
T
P
5
3 (2.09)
A
C
B
D
100 (3.94)
77
(3.03)
A, B
T
a
T
P
T
1
1
1
1
p
T
a
+32
6
0
55
+8
5
5
0
4
5
140
131
+18
5
122
113
200
8
5
−
7
0
300
392
18
5
+32
−40
−94
57
2
+400
+
75
2
T
a
[°C]
[°F]
[°C]
[°F]
T
p
A
B
D
−
−
−
40
3
5
30
−
−
−
40
31
22
0
0
−40
C
C, D
Position
Design
Temperature isolator
Option
1)
1)
Product Configurator, order code for "Process connection"
A
Transmitter horizontally
long
MA
B
Transmitter vertical
long
MB
C
Transmitter horizontally
short
MC
D
Transmitter vertical
short
MD
Содержание Deltabar S FMD77
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