Cerabar M
Endress+Hauser 29
Operating conditions (process)
Process temperature limits Note!
• For oxygen applications, see Page 27, "Oxygen applications" section.
• PMC41 and PMC45: extreme jumps in temperature can result in temporary measuring errors. Temperature
compensation takes effect after several minutes. Internal temperature compensation is faster the smaller the
temperature jump and the longer the time interval.
PMC41 (with ceramic measuring diaphragm)
• -40 to +100°C (–40 to +212°F)
• Observe temperature operating range of the seal. → See also the following section
"Temperature operating range, seals".
PMC45 (with ceramic measuring diaphragm)
• –40 to +125°C (–40 to +257°F) (+150°C (+302°F) for max. 1 hour)
• Observe temperature operating range of the seal. → See also the following section
"Temperature operating range, seals".
PMP41 (with metal measuring diaphragm)
• -40 to +100°C (–40 to +212°F)
• Observe temperature operating range of the seal. → See also the following section
"Temperature operating range, seals".
PMP45 (with metal measuring diaphragm)
• –40 to +125°C (–40 to +257°F) (+150°C (+302°F) for max. 1 hour)
PMP46 and PMP48 (with metal measuring diaphragm)
• –70 to +400 °C, depends on the diaphragm seal and filling oil
Observe the temperature application limits of the diaphragm seal oil. → See also Page 60, "Diaphragm seal
filling oils" section.
• PMP48 with PTFE coating: –50 to +205 °C
Temperature operating range,
seals
PMC41 (with ceramic measuring diaphragm)
PMC45 (with ceramic measuring diaphragm)
Version for feature 80 in the
order code
Seal Temperature operating range
1 FKM Viton –20 to +100°C (–4 to +212°F)
2 NBR –20 to +80°C (–4 to +176°F)
4 EPDM –20 to +100°C (–4 to +212°F)
C Chemraz, Compound 505 –10 to +100°C (+14 to 212°F)
7 Kalrez, Compound 4079 +5 to +100°C (+41 to 257°F)
M Kalrez, cleaned for PWIS-free applications +5 to +100°C (+41 to 257°F)
A FKM Viton, cleaned from oil + grease –10 to +100°C (+14 to 212°F)
6 FKM Viton, cleaned for oxygen service –10 to +60°C (+14 to 140°F)
L FKM Viton, cleaned for PWIS-free applications –10 to +60°C (+14 to 140°F)
9 Silicone to be ordered as special version –40 to +100°C (–40 to +212°F)
Version for feature 80
in the order code
Seal Temperature operating range
1 FKM Viton –20 to +125°C/150°C
1)
(–4 to +257°F/302°F)
4,
2
) EPDM (FDA 21CFR177.2600); 3A Class II; USP Class
VI
–20 to +125 °C/150 °C
1)
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