Deltabar PMD78B PROFINET with Ethernet-APL Technical data
Endress+Hauser 89
Oxygen applications (gaseous)
Oxygen and other gases can react explosively to oils, grease and plastics. The following
precautions must be taken:
• All components of the system, such as devices, must be cleaned in accordance with the
national requirements.
• Depending on the materials used, a certain maximum temperature and a maximum
pressure must not be exceeded for oxygen applications.
The cleaning of the device (not accessories) is offered as an optional service.
• p
max
: PN of flange, max. 80 bar (1 200 psi)
• T
max
: 60 °C (140 °F)
Seals
Seal on the LP side (–) Temperature Pressure specifications
FKM –20 to +85 °C (–4 to +185 °F) -
FKM
Cleaned of oil and grease
–10 to +85 °C (+14 to +185 °F) -
FKM
Cleaned for oxygen service
–10 to +60 °C (+14 to +140 °F) -
FFKM –10 to +85 °C (+14 to +185 °F) MWP: 160 bar (2 320 psi)
–25 to +85 °C (–13 to +185 °F) MWP: 100 bar (1 450 psi)
EPDM –40 to +85 °C (–40 to +185 °F) -
PTFE –40 to +85 °C (–40 to +185 °F) PN > 160 bar (2 320 psi)
Minimum process temperature: –20 °C (–4 °F)
PTFE
Cleaned for oxygen applications
–20 to +60 °C (–4 to +140 °F) PN > 160 bar (2 320 psi)
Minimum process temperature: –20 °C (–4 °F)
• Diaphragm seal and capillary welded: Pay attention to the temperature application limits
of the fill fluid
• PMD78B generally OPL on one side 160 bar (2 320 psi), on both sides
240 bar (3 480 psi)
Lower temperatures on request
Process temperature range
(temperature at
transmitter)
Diaphragm seal on one side with temperature isolator
• Dependent on design (see "Design" section)
• Dependent on diaphragm seal and fill fluid: –70 to +400 °C (–94 to +752 °F)
• Observe the temperature application limits of the fill fluid.
• Observe the maximum gauge pressure and maximum temperature
• Pay attention to the process temperature range of the seal
Design:
• Transmitter horizontal, temperature isolator long: 400 °C (752 °F)
• Transmitter vertical, temperature isolator long: 300 °C (572 °F)
• Transmitter horizontal, temperature isolator short: 200 °C (392 °F)
• Transmitter vertical, temperature isolator short: 200 °C (392 °F)
Diaphragm seal on one side or both sides with capillary
• Depends on diaphragm seal and fill fluid: –70 °C (–94 °F) up to +400 °C (+752 °F)
• A4 screws of process connection, threaded separator: T
min
–60 °C (–76 °F)
• Observe the maximum gauge pressure and maximum temperature
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