Endress+Hauser Deltabar PMD75B HART, Руководство пользователя

Страница: 76 / 80

Technical data Deltabar PMD75B HART
76 Hauser
• FKM, cleaned for oxygen service: –10 to +60 °C (+14 to +140 °F)
• FFKM:
• For OPL 130 to 160 bar (1 885 to 2 320 psi) and PN
87 to 107 bar (1 305 to 1 605 psi): T –10 to +25 °C (+14 to +77 °F)
• For OPL 160 bar (2 320 psi) and PN 107 bar (1 605 psi): T
+25 to +85 °C (+77 to +185 °F)
• EPDM: –40 to +85 °C (–40 to +185 °F)
• PTFE, cleaned for oxygen applications: –20 to +60 °C (–4 to +140 °F)
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 individual sensors.
To ensure that no lasting damage occurs, the test pressure may only be applied 20
times, for 1 minute each time.
‣
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
PN160
• Measuring range: ≤40 bar (580 psi)
• Burst pressure: 690 bar (10 005 psi)
Applies to the process seal materials FKM, PTFE, FFKM, EPDM and for pressure applied
on both sides
PN250, PN320, PN420
• Measuring range: ≤40 bar (580 psi)
• Burst pressure: 1 600 bar (23 200 psi)
Applies to the process seal materials FKM, FFKM, EPDM and for pressure applied on
both sides
If the side vent valves option (sv) is selected, the burst pressure is 690 bar (10 005 psi)
For the process seal material PTFE (PN250), the burst pressure is 1 250 bar (18 125 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.