Endress+Hauser Cerabar M PMC51 - Operation; Operating options

Cerabar M PMC51, PMP51, PMP55
38 Endress+Hauser
Reading cycle
• Acyclic: typically 5/s
• Cyclic: max. 10/s (dependent on the number and type of function blocks used in a closed-control
loop)
Cycle time (update time)
Cyclic: min. 100 ms
Installation factors Influence of installation position
90°
90°
C
A
B
A0023697
Measuring error in mbar (psi)
Process isolating
diaphragm axis is
horizontal (A)
Process isolating
diaphragm pointing
upwards (B)
Process isolating
diaphragm pointing
downwards (C)
PMP51 with ½" thread and silicone oil Calibration position, no
measuring error
< +4 mbar (+0.06 psi) < –4 mbar (–0.06 psi)
PMP51 with thread > ½" and flanges < +10 mbar (+0.145 psi)
The value is doubled for
inert oil.
< –10 mbar (–0.145 psi)
The value is doubled for
inert oil.
A position-dependent zero point shift can be corrected on the device.
Warm-up period
• 4 to 20 mA analog: ≤1.5 s
• 4 to 20 mA HART: ≤5 s
• PROFIBUS PA: ≤8 s
• FOUNDATION Fieldbus: ≤20 s (after a TOTAL reset ≤45 s)