Installation; Installation Conditions; Influence Of The Installation Position; Mounting Location - Endress+Hauser Cerabar PMC11 Technical Information

Cerabar PMC11, PMC21, PMP11, PMP21

Installation conditions

Influence of the installation
position

Mounting location

Endress+Hauser

Installation

• Moisture must not penetrate the housing when mounting the device, establishing the electrical
connection and during operation.
• Point the cable and connector downwards where possible to prevent moisture from entering (e.g.
rain or condensation water).
Any orientation is possible. However, the orientation may cause a zero point shift i.e. the measured
value does not show zero when the vessel is empty or partially full.
A
Type Process isolating
diaphragm axis is
horizontal (A)
PMP11 Calibration position, no
PMP21 effect
PMC11, PMC21 Calibration position, no
< 1 bar (15 psi) effect
PMC11, PMC21 Calibration position, no
≥1 bar (15 psi) effect
Pressure measurement
Pressure measurement in gases
Mount the device with shutoff device above the tapping point so that any condensate can flow into
the process.
1 Device
2 Shutoff device
Pressure measurement in vapors
For pressure measurement in vapors, use a siphon. The siphon reduces the temperature to almost
ambient temperature. Mount the device with a shutoff device at the same height as the tapping
point.
Advantage:
only minor/negligible heat effects on the device.
Note the max. permitted ambient temperature of the transmitter!
B C
Process isolating diaphragm
pointing upwards (B)
Up to +4 mbar (+0.058 psi)
Up to
+0.3 mbar (+0.0044 psi)
Up to +3 mbar (+0.0435 psi)
1
2
A0024708
Process isolating diaphragm
pointing downwards (C)
Up to –4 mbar (–0.058 psi)
Up to
–0.3 mbar (–0.0044 psi)
Up to –3 mbar (–0.0435 psi)
A0021904
23