Endress+Hauser Cerabar S Series - Technical Data

9 Technical Data
General information
Manufacturer Endress+Hauser
Instrument Pressure transmitter
Designation Cerabar S PMC 631, PMP 635, PMC 731, PMP 731
Technical documentation
Version
Technical data
BA 211P/00/en
04.00
DIN 19259
Input
Measured variables Absolute and gauge pressure in gases, vapours, liquids
Measuring ranges As stated on nameplate
Output
Output signal Digital communication signal, Foundation Fieldbus protocol
FF function Publisher-Subscriber
Transmission rate 31.25 kBit/s
Signal on alarm Signal: Status bit set, last valid measured value will be held
Display module: error code
Damping 0…40 s via configuration tool
Communication resistance Foundation Fieldbus termination resistor
Accuracy
Reference conditions DIN IEC 770 T
U
=25 °C
Accuracy data adopted after entering "Low sensor calibration" and "High
sensor calibration" for lower range value and upper range value
Linearity including hysteresis
and repeatability based on the
limit point method to IEC 770
to TD 10:1: ±0.1 % (* ±0.2 %) of set span
forTD10:1to20:1:
±0.1 % (* ±0.2 %) x [nominal value/(set span x 10)]
For small absolute pressure
ranges more detailed
information on linearity is
required. This is specified by
the smallest possible
measurement error which can
be supplied by the DKD
calibration centre.
Absolute: for >30 mbar <100 mbar span: ±0.3 %
for ≤ 30 mbar: ±1 %
of set span
Thermal changes
(applies to transmitters without
diaphragm seals or capillary
tubing)
for –10…+60 °C: ±(0,1 % x TD + 0,1 %)
for –40…–10 °C, +60 °C…+85 °C: ±(0.2 % x TD + 0.2 %)
with reference to the set span
Thermal changes for
Cerabar S with PTFE seal
PMC 731 - # # ## # # # ## D
for –20…+85 °C: ±(0.2 % x TD + 0.4 %): 0.1 bar
±(0.2 % x TD + 0.2 %): 0.4 bar, 2 bar
±(0.1 % x TD + 0.1 %)10 bar, 40 bar
Temperature coefficient
(for the set span; applies to
transmitters without
diaphragm seals or capillary
tubing)
Zero signal and output span:
±0.02 % of nominal value / 10 K at –10…+60 °C
±0.05 % of nominal value / 10 K at –40…–10 °C and +60…+85 °C
Temperature coefficient for
Cerabar S with PTFE seal
PMC 731 - # # ## # # # ## D
Zero signal and output span:
±0.05 % of nominal value / 10 K at –20…+85 °C
Settling time Ceramic measuring cell: ± 500 ms, metal measuring cell: ±400 ms
Rise time 150 ms (T
90
time)
Long-term drift
with reference to span
0.1 year
Explanation of terms:
Turndown (TD) =
Nominal value / set span
Example: Nominal value = 2 bar
set span = 0.9 bar
* Values for instruments with
diaphragm seals PMC 631,
PMP 635 are identified by
*
-1 0 0.9
2
Nominal value
set span
9 Technical Data Cerabar S FF
54 Endress+Hauser