Orifice Plates for Precise Flow Measurement | DOSCH

DOSCH Orifice Plates – Reliable Differential Pressure Flow Measurement

Dosch Messapparate GmbH, Germany, is a specialist in differential pressure, flow and industrial measurement technology, with decades of engineering experience. The company develops and manufactures customized primary flow elements for demanding process applications, with products designed according to international standards such as DIN EN ISO 5167, ASME and other customer-specific specifications.

The DOSCH Orifice Plate is a proven differential-pressure flow measurement solution for liquids, gases and steam. Its sharp-edged measuring bore creates a defined pressure difference between the upstream and downstream sides. This differential pressure is then measured by a DP transmitter and converted into volumetric or mass flow.

This technology is particularly attractive for industrial plants because it has no moving parts, high mechanical durability and relatively simple maintenance, while providing reproducible measurement when correctly designed and installed according to the applicable standard. DOSCH states measurement uncertainty of approximately 0.5–1.2% of the flow coefficient, depending on the application and configuration.

Main DOSCH Orifice Plate Models

DOSCH's BLS 100 is specifically designed for aggressive and non-aggressive gases, vapors and liquids, particularly in large-diameter pipelines. Different geometries, including quarter-circle nozzle, segment orifice, conical entrance and double-cone designs, can be selected according to process conditions.

DOSCH Technology – Safety, Accuracy and Durability

A major advantage of DOSCH is its custom-engineered approach. Orifice plates can be manufactured according to process pressure, temperature, pipe diameter, medium characteristics and required measurement standard. Additional pressure tappings can also be incorporated for redundancy or special high/low-temperature and high-pressure applications.

For challenging applications, DOSCH also supplies weld-in orifice plates, meter runs, Venturi tubes, nozzles, wedge flow meters and Pitot tubes. This enables engineers to select the differential-pressure technology according to flow conditions rather than relying on a single measurement principle.

Comparison of DOSCH Flow Measurement Technologies

DOSCH restriction orifice plates are especially developed for applications involving defined pressure reduction, flow limitation, high pressure loss, high velocity or cavitation risk.

LTĐ – Authorized DOSCH Distributor in Vietnam

LTĐ – Authorized Distributor of DOSCH in Vietnam provides technical support for selection, engineering design, installation, configuration, calibration, commissioning, warranty and fast repair services. We help customers select the appropriate orifice plate, pressure tapping, DP transmitter and meter run according to actual process conditions.

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