Installation Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART
10 Endress+Hauser
3.3 Installing Cerabar M
!
Note!
• Due to the orientation of the Cerabar M, there may be a shift in the zero point, i.e. when the
container is empty or partially full, the measured value does not display zero. You can correct this
zero point shift ä 40, Section "Function of the operating elements" or ä 56, Section 6.4
"Position zero adjustment".
• For PMP55, please refer to Section 3.3.2 "Installation instructions for devices with diaphragm
seals – PMP55", ä 12.
• Endress+Hauser offers a mounting bracket for installing on pipes or walls.
ä 15, Section 3.3.5 "Wall and pipe mounting (optional)".
3.3.1 Installation instructions for devices without diaphragm seals –
PMP51, PMC51
!
Note!
• If a heated Cerabar M is cooled during the cleaning process (e.g. by cold water), a vacuum
develops for a short time, whereby moisture can penetrate the sensor through the pressure
compensation (1). If this is the case, mount the Cerabar M with the pressure compensation (1)
pointing downwards.
• Keep the pressure compensation and GORE-TEX
®
filter (1) free from contamination.
• Cerabar M transmitters without diaphragm seals are mounted as per the norms for a manometer
(DIN EN 837-2). We recommend the use of shutoff devices and siphons. The orientation depends
on the measuring application.
• Do not clean or touch process isolating diaphragms with hard or pointed objects.
Pressure measurement in gases
P01-PMx5xxxx-11-xx-xx-xx-003
Fig. 5: Measuring arrangement for pressure measurement in gases
1 Cerabar M
2 shutoff device
• Mount Cerabar M with shutoff device above the tapping point so that condensate which may be
present, can flow into the process.
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