Cerabar PMP71B HART
Technical data
Hauser
77
Devices with PTFE-coated diaphragm seal process isolating diaphragm
The non-stick coating has excellent gliding properties and is used to protect the process
isolating diaphragm against abrasive media.
NOTICE
Destruction of the device due to incorrect use of PTFE coating!
‣
The PTFE coating used is designed to protect the unit against abrasion. It does not
provide protection against corrosive media.
For the range of application of the 0.25 mm (0.01 in) PTFE foil on an AISI 316L
(1.4404/1.4435) process isolating diaphragm, see the following diagram:
T
P
p
[bar p ]
e
[°C]
0
50
100
150
200
250
-40 25 50 75 100 125 150 175 200
[°F]
[psi p ]
g
0
725
1450
2175
2900
3625
-40 77 122 167 212 257 302 347 392
A0045213
For vacuum applications: p
abs
≤ 1 bar (14.5 psi) to 0.05 bar (0.725 psi) up to max.
+150 °C (302 °F).
If PTFE coating was selected, a conventional process isolating diaphragm is always
supplied.
Diaphragm seal capillary armor
Process temperature depending on the ambient temperature.
• 316L: No restrictions
• PTFE: No restrictions
• PVC: See the following diagram
T
p
T
a
+32
+80
40
+185
113
200
100
−70
300
392
392
+32
−94
572
T
a
[°C]
[°F]
[°C]
[°F]
−
−
40
25
−
−
40
22
0
0
T
p
A0038681
Summary of Contents for Hart Cerabar PMP71B
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