Endress+Hauser Hart Cerabar PMP71B, Руководство по эксплуатации

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Installation Cerabar PMP71B HART
18 Hauser
A B
h1
2
≥ 100 (3.94)
1
1
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A Recommended installation with vacuum application
B Installation above the diaphragm seal
h1 Height difference
1
Measuring device
2 Ensure strain relief to prevent the capillary from bending (bending radius ≥ 100 mm (3.94 in).
The maximum height difference depends on the density of the diaphragm seal fill fluid
and the smallest ever absolute pressure that is permitted to occur at the diaphragm seal
(empty vessel).
5.1.5 Orientation
NOTICE
Damage to the measuring device!
If a heated measuring device is cooled during a cleaning process (e.g. by cold water), a
vacuum develops for a short time. As a result of this, moisture can enter the sensor via the
pressure compensation element (1).
‣
Mount the measuring device with the pressure compensation element (1) pointing
downwards.
1
1
1
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• Keep the pressure compensation element (1) free from contamination
• A position-dependent zero point shift (when the vessel is empty the measured value
does not display zero) can be corrected
• Diaphragm seals also shift the zero point, depending on the installation position
• The use of shutoff devices and/or siphons is recommended for mounting
• The orientation depends on the measuring application