Endress+Hauser Hart Cerabar PMP71B, Руководство по эксплуатации

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Technical data Cerabar PMP71B HART
80 Hauser
T
a
T
p
–20 °C (–4 °F) –70 to +160 °C (–94 to +320 °F)
–50 °C (–58 °F) 0 to +160 °C (+32 to +320 °F)
Thermal insulation when mounting with a "Temperature isolator" diaphragm seal
type
Use of temperature isolators in the event of constant extreme medium temperatures which
cause the maximum permissible electronics temperature of +85 °C (+185 °F) to be
exceeded. Diaphragm seal systems with temperature isolators can be used up to a
maximum temperature of +400 °C (+752 °F) depending on the fill fluid used. For details
see the Technical Information. To minimize the influence of rising heat, mount the device
horizontally or with the housing pointing downwards. The additional installation height
brings about a zero point shift due to the hydrostatic column in the temperature isolator.
This zero point shift can be corrected on the device.
The maximum ambient temperature T
a
at the transmitter depends on the maximum
process temperature T
p
.
The maximum process temperature depends on the diaphragm seal fill fluid used.
T T
p p
T
T
a
a
A B C
2
2
1 1
1
T
p
T
a
T
p
T
a
+176 +140 +104 +68 +32 -4
+400
+350
+300
+250
+200
+150
+100
+50
0
-50
-100
+752
+662
+572
+482
+392
+302
+212
+122
+32
-58
-148
[°C]
[°F]
[°C] [°F]
+80 +60 +40 +20 0 -20
-40
-40
A
A
C
C
B
B
-76
- 0 6
A0039378
A No insulation
B Insulation 30 mm (1.18 in)
C Maximum insulation
1 Transmitter
2 Insulation material