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Primary differential pressure devices, like SITRANS F O orifice, are standardized mechanical flow sensor according DIN EN ISO 5167 which are used for volume and mass flow measurement. The SITRANS F O orifice are suitable for non-corrosive and corrosive gases, vapors and liquids; permissible operating temperature -60 to +570 °C. The created differential pressue will be converted with the help of a differential pressure transmitter SITRANS P delta P into a proportional flow signal.
For calculation of the SITRANS F O orifice to DIN EN ISO 5167 is an completed filled out questionnaire necessary.
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Orifice flowmeter features |
- Orifice flowmeters are very robust and can be used in a wide range of nominal diameters
- Suitable for wide ranges of temperature and pressure
- No calibration required as the process is standardized
- The electronics required in addition can be used over a long distance from the measuring location
- The differential pressure method is well known and has a large installed base
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Orifice flowmeter technical specifications |
Primaries / Differential pressure devices
- Mounting between flanges
- with welded connections
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Orifice with annular chamber or single tappings
Metering pipe with orifice plate, annular chamber or single tappings
Further:
Flanged orifice plate with flange tappings
ISA-1932-Nozzle
Venturi nozzle
Classical venturi
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| Application Examples |
Power stations
Petrochemical industry
Chemical industry |
| Nominal Sizes |
From DN 10 to DN 1000
From ½ inch to 40 inches |
| Temperature Range |
From -60 to 570 °C
From -76 to 1058 °F |
| Operating Pressure |
Max. 315 bar
Max. 4570 psi |
| Process Connections |
Thread G½ and ½-14 NPT
cutting ring
Welding |
| Orifice Material |
1.7335, 1.4571, 1.4576 |
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