9 Technical Data
General information
Manufacturer
Hauser
Instrument
Pressure transmitter
Designation
Cerabar S PMC 631, PMP 635, PMC 731, PMP 731
Technical documentation
Version
Technical data
BA 187P/00/en
03.03
according to DIN 19259
Input
Measured variables
Absolute and gauge pressure in gases, vapours, liquids
Measuring ranges
As stated on nameplate
Adjusting the span (Turndown) 100:1
Output
Output signal
4…20 mA, optional with superimposed communication signal for
INTENSOR or HART protocol,
Underrun 3.8 mA (4 mA adjustable), overrun 20.5 mA
Load
See Chapter 2
Signal on alarm for electronic
Order codes
"E", "H", "M", "N"
Options:
– Max. alarm: setting in the range 21 …22.5 mA
– Value hold: last measured value held
– Min. alarm: 3.6 mA
Resolution
1 µA
Damping (Integration time)
– 0 to 40 s infinitely adjustable with handheld terminal or personal
computer with operating program
– 0 to 16 s in steps via rotary switch on the device
Communication line resistance min. 250
Ω
Accuracy
Reference conditions
as per IEC 60770 TU = +25°C (+77°F)
Accuracy data adopted after entering "Low sensor trim" and "High sensor
trim" for lower range value and upper range value
Non-linearity including
hysteresis and
non-reproducibility (limit point
method according to
IEC 60770)
to TD 10:1:
±0.1 % (* ±0.2 %) of set span
for TD 10:1 to 20:1:
±0.1 % (* ±0.2 %) x
[
nominal value/(set span x 10)
]
of set span
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 to <100 mbar span: ±0.3 %
for
≤
30 mbar: ±1 %
of set span
For gauge pressure
measurements using absolute
pressure sensors with
measuring ranges
≤
10 bar
Accuracy can be exceeded by fluctuating ambient air pressure
Settling time
Ceramic measuring cell: 500 ms, metal measuring cell: 400 ms
Rise time (T
90
time)
150 ms
Long-term drift
±0.1 % of nominal value per 1 year
±0.25 % of nominal value per 5 years
Thermal effects
(applies to transmitters without
diaphragm seals or capillary
tubing; with reference to the
set span; max. TD 20:1)
for –10…+60°C (+14…+140°F): ±(0.1 % x TD + 0.1 %)
for –40…–10°C (–40…+14°F) and +60°C…+85°C (+140…+185°F):
±(0.2 % x TD + 0.2 %)
TD= nominal value/set span
Thermal effect for
Cerabar S with PTFE gasket
(PMC 731 - # # ## # # # ## D,
max. TD 20:1)
for –20…+85°C (–4…+185°F):
±(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
(applies to transmitters without
diaphragm seals or capillary
tubing; with reference to the
set span)
Zero signal and span:
–10…+60°C (+14…+140°F): ±0.02%/10 K of nominal value
–40…–10°C (–40…+14°F) and +60…+85°C (+140…+185°F):
±0.05%/10 K of nominal value
Temperature coefficient for
Cerabar S with PTFE gasket
(PMC 731 - # # ## # # # ## D,
max. TD 20:1)
Zero signal and span:
±0.05 % of nominal value/10 K at –20…+85°C (–4…+185°F)
Explanation of terms:
Turndown
(TD) =
Nominal value / set span
Example: Nominal value = 2 bar
set span = 0.9 bar
TD = 2:0.9
*
Values for devices with diaphragm
seals PMC 631, PMP 635
-1
0
0,9
2
Nominal value
set span
9 Technical Data
Cerabar S
54
Hauser
Summary of Contents for Cerabar S PMC 731
Page 6: ...6 Endress Hauser...
