Deltabar PMD78B HART Mounting
Endress+Hauser 9
Do not mount capillaries in the vicinity of heating or cooling lines and protect them against
direct sunlight.
More detailed installation instructions are provided in the Applicator "Sizing Diaphragm Seal".
Vacuum applications
In vacuum applications, mount the pressure transmitter below the diaphragm seal. This
prevents additional vacuum loading of the diaphragm seal caused by the presence of fill fluid
in the capillary.
If the pressure transmitter is mounted above the diaphragm seal, do not exceed the maximum
height difference h1. The height difference h1 is shown in the Applicator
"Sizing Diaphragm Seal".
1
+ -
h1
– –
+ +
+ -
A B
2
≥ 100 (3.94)
1
A0038720
Unit of measurement mm (in)
A Recommended installation in a vacuum application
B Installation above the lower diaphragm seal
h1 Height difference (is shown in the Applicator "Sizing Diaphragm Seal")
1 Device
2 Bending radius ≥ 100 mm (3.94 in). Ensure strain relief to prevent the capillary from bending.
The maximum height difference depends on the density of the fill fluid and the lowest
absolute pressure that can ever occur at the diaphragm seal (empty vessel).
Information on cleaning
Endress+Hauser provides flushing rings as an accessory to enable the membrane to be
cleaned without removing the transmitter from the process.
For more information: contact the Endress+Hauser sales office.
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