Compact orifice

The compact orifice Oriflow is used for flow measurements of conductive and non-conductive fluids, gases and vapours in all industrial branches.

Our subsidiary METRA Energie-Messtechnik GmbH (link to METRA homepage) has taken over this area. Our team will be happy to answer any questions you may have.


Applications include flow measurements (volume / Mass) for balancing (compressed air systems, heat carries, vapours, chemical products, for examples), process control and high throughput applications, redundant solutions for safety applications

  • highest market acceptance already over 10,000 units in operation worldwide
  • extremely rugged and stable measuring instrument
  • suitable for extreme applications
Special features
  • dry calibration
  • high repeatability
  • easy installation without pressure lines
Technical data
Nominal sizeDN15 to DN1.000 (1/2“ bis 40“)
Process connectionSandwich, Flanges according to DIN or ANSI
MaterialStainless steel, Hastelloy, Tantalum, Titan, PVDF, Monel
Flow Range

0.2 m³/h to 150,000 m³/h

(52.83 gal/h to 39,625808 gal/h)

Accuracyup to ±0,6%

-40°C up to +400°C

(-40°F up to +752°F)

Process temperature

up to PN100 (up to 320 bar / 4,641 psi on request)

Process pressurecurrent output / Foundation Fieldbus / Profibus A
Ex-protectionFlame proof or intrinsically safe


  • Oil and Gas
  • Chemistry and pharmaceutical
  • Mechanical and plant engineering
  • Energy and power plants