Cerabar M PMC51, PMP51, PMP55
Endress+Hauser 39
Installation
General installation
instructions
The position-dependent zero point shift can be corrected:
• directly at the device via operating keys on the electronic insert
• directly at the device via operating keys on the display(except analog electronics)
• via digital communication if the cover is not open(except analog electronics).
• Endress+Hauser offers a mounting bracket for installing the device on pipes or walls.
• Use flushing rings for flange and cell diaphragm seals if medium buildup or clogging can be
expected at the diaphragm seal connection. The flushing ring can be inserted between the process
connection and the diaphragm seal. Thanks to the two lateral flushing bore holes, material
buildup in front of the process isolating diaphragm can be rinsed away and the pressure chamber
can be ventilated.
• To guarantee the leak-tightness of the transmitter, Endress+Hauser recommends that only
genuine cable glands be used (also available as spare parts).
Measuring arrangement for
devices without diaphragm
seal – PMC51, PMP51
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.
Pressure measurement in gases
Mount Cerabar M with shutoff device above the tapping point so that any condensate can flow into
the process.
Pressure measurement in steams
Use a siphon if measuring pressure in steams. The siphon reduces the temperature to almost the
ambient temperature. Fill the siphon with liquid before commissioning. Preferably mount the
Cerabar M with a siphon below the tapping point.
Advantages:
• Defined water column only causes minimal/negligible measured errors
• Only minimal/negligible thermal effects on the device
The device may also be mounted above the tapping point. Pay attention to the maximum
permitted ambient temperature of the transmitter!
• Fill the siphon with liquid before commissioning.
Pressure measurement in liquids
Mount Cerabar M with shutoff device below or at the same level as the tapping point.
Level measurement
• Mount Cerabar M below the lowest measuring point (zero point of the measurement).
• Do not mount the device at the following positions: In the filling curtain, in the tank outlet or at a
point in the vessel which could be affected by pressure pulses from an agitator or a pump.
• The calibration and functional test can be carried out more easily if you mount the device
downstream of a shutoff device.
Measuring arrangement for
devices with diaphragm seal
– PMP55
→ 113
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