Dosch - Model BLA 200 -Ring Chamber Orifice Plate with Taps
Ring chamber orifice plates with pressure taps are used as flow elements for flow measurement of aggressive and non-aggressive gases, steam and liquids.
The carrier ring consists of two parts which form a ring chamber. The orifice plate is mounted between the two carrier ring parts and may be manufactured as
- square edge concentric bidirectional
- quarter circle nozzle
- plate with conical entrance double cone
according to the relevant standards (ISO 5167, ASME MFC-3M etc.). The plate type is chosen based on the specific process conditions. The carrier rings and orifice plates are sealed by a flat gasket. The orifice plate is usually manufactured from a wear-resistant material like stainless steel. The material of the carrier ring can be equivalent to the pipe material. For transportation and installation, we secure the parts with a strap.
- The ring chamber design ensures that the pressure values are averaged over the cross section. This results in a steady measurement signal.
- As the orifice plate is removable, the unit may be easily adjusted to changing process data by switching of the orifice plate.
Ranges from 0,5% -1,2% of the discharge coefficient C, depending on the application.
The pressure loss depends on the diameter ratio p (d/D) and ranges from 30 - 80% of the differential pressure.
DN 50 to DN 1000 / 2" to 40" (if requested other sizes are available)
up to PN 100 / 600# (ASME), higher flange ratings are not recommended.