Deltabar S PMD70/75 FMD76/77/78

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Deltabar S
Oxygen applications
Oxygen and other gases can react explosively to oils, grease and plastics, such that, among other things, the
following precautions must be taken:
– All components of the system, such as measuring devices, must be cleaned in accordance with the BAM
(DIN 19247) requirements.
– Dependent on the materials used, a certain maximum temperature and a maximum pressure for oxygen
applications must not be exceeded.
The devices suitable for gaseous oxygen applications are listed in the following table with the specification p max .
Order code for devices 1 cleaned for
oxygen applications
p max for oxygen applications
T max for oxygen
applications
PMD70 – * * * ** * * * 2 * *,
Devices with 500 mbar (7.5 psi) or
3000 mbar (45 psi) measuring cell
30 bar (450 psi) 60 °C (140 °F)
PMD70 – * * * ** * * * 2 * *,
Devices with 25 mbar (0.375 psi) or
100 mbar (1.5 psi) measuring cell
PN of the measuring cell
60 °C (140 °F)
PMD75 – * * * ** * * * K * * 160 bar (2400 psi) 85 °C (185 °F)
PMD75 – * * * ** * * * 2 * * 160 bar (2400 psi) 60 °C (140 °F)
PMD75 – * * * ** * * * 3 * * 160 bar (2400 psi) 60 °C (140 °F)
FMD76 – * * * ** * T * * *,
Devices with 500 mbar (7.5 psi) or
3000 mbar (45 psi) measuring cell
30 bar (450 psi) 60 °C (140 °F)
FMD76 – * * * ** * T * * *,
Devices with 25 mbar (0.375 psi) or
100 mbar (1.5 psi) measuring cell
PN of the measuring cell
60 °C (140 °F)
FMD77 – * * * ** T * F * * PN of the flange 60 °C (140 °F)
FMD78 – * * * ** * ** 4 * *
FMD78 – * * * ** * ** D * *
90 bar (1350 psi) 85 °C (185 °F)
1) Only devices, not accessories or enclosed accessories.
Ultrapure gas applications
Applications with hydrogen
Endress+Hauser also offers devices for special applications, such as ultrapure gas, cleaned from oil and grease.
No special restrictions regarding the process conditions apply to these devices.
ä 69 ff, PMD70 and PMD75: feature 80 "Seal", FMD76 and FMD77: feature 70 "Process connection lowpressure
side, material, seal".
With regard to materials in which hydrogen formation takes place, hydrogen atoms can diffuse through the
metal process isolating diaphragms. This can result in incorrect measurement results.
Endress+Hauser offers process isolating diaphragms with gold-rhodium coating for this application.
ä 73 "Ordering information PMD75", ä 79 "Ordering information FMD77" or ä 82 "Ordering
information FMD78", feature 60 "Process isolating diaphragm material".
Endress+Hauser 27
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