Technical data
Cerabar PMP71B HART
78
Hauser
Process pressure range
Pressure specifications
L
WARNING
The maximum pressure for the measuring device depends on the lowest-rated
element with regard to pressure (components are: process connection, optional
mounted parts or accessories).
‣
Only operate the measuring device within the prescribed limits of the components!
‣
MWP (maximum working pressure): The MWP is specified on the nameplate. This
value refers to a reference temperature of +20 °C (+68 °F) and may be applied to the
device for an unlimited time. Note temperature dependence of MWP. For flanges, refer
to the following standards for the permitted pressure values at higher temperatures:
EN 1092-1 (with regard to their stability/temperature property, the materials 1.4435
and 1.4404 are grouped together under EN 1092-1; the chemical composition of the
two materials can be identical.), ASME B 16.5a, JIS B 2220 (the latest version of the
standard applies in each case). MWP data that deviate from this are provided in the
relevant sections of the Technical Information.
‣
The test pressure corresponds to the overpressure limit (OPL) of the overall system.
This value refers to a reference temperature of +20 °C (+68 °F).
‣
The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS". The
abbreviation "PS" corresponds to the MWP (maximum working pressure) of the
measuring device.
‣
In the case of sensor range and process connection combinations where the over
pressure limit (OPL) of the process connection is smaller than the nominal value of the
sensor, the device is set at the factory, at the very maximum, to the OPL value of the
process connection. If the entire sensor range must be used, select a process connection
with a higher OPL value (1.5 x PN; MWP = PN).
‣
Oxygen applications: do not exceed values for P
max
and T
max
.
Burst pressure
The following specifications apply for standard measuring devices (without a diaphragm
seal).
Measuring range 400 mbar (6 psi) to 10 bar (150 psi)
Burst pressure: 100 bar (1
450 psi)
Measuring range 40 bar (600 psi)
Burst pressure: 250 bar (3
625 psi)
Measuring range 100 bar (1
500 psi)
Burst pressure: 1
000 bar (14
500 psi)
Measuring range 400 bar (6
000 psi)
Burst pressure: 2
000 bar (29
000 psi)
Measuring range 700 bar (10
500 psi)
Burst pressure: 2
800 bar (40
600 psi)
Ultrapure gas applications
Hauser also offers measuring devices for special applications, such as for
ultrapure gas, which are cleaned from oil and grease. No special restrictions regarding the
process conditions apply to these measuring devices.
Hydrogen applications
A
gold-coated
metal process membrane offers universal protection against hydrogen
diffusion, both in gas applications and in applications with aqueous solutions.
Steam applications and
saturated steam
applications
For steam and saturated steam applications: use a measuring device with a metal process
membrane, or provide a siphon for temperature isolation when installing.
Summary of Contents for Hart Cerabar PMP71B
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