The orifice plate type flow meter is a differential pressure device for measuring flow. It can be used with differential pressure transmitters to measure various liquid or gas in the pipeline.
Orifice plate flow meter includes standard annular chamber orifice plate, nozzle and so on. Orifice flow meter throttling device is used with differential pressure transmitter to measure the flow of liquid, steam and gas. Orifice plate differential pressure flow meter is widely used in petroleum, chemical, metallurgy, power, light industry and other departments.

How Orifice Plate Flow Meter Works

When fluid fills the pipeline and flows through the throttle device of the orifice plate flow meter, a local contraction occurs at the orifice, causing the flow velocity to increase and the static pressure to decrease. This results in a pressure drop(differential pressure) between the upstream and downstream sides of the orifice. The greater the flow rate, the larger the differential pressure generated. By measuring this pressure difference, the orifice plate flow meter can determine the flow rate of the fluid.

This flow measurement principle is based on the laws of energy conservation and flow continuity.

Some orifice plate flow meter manufacturers have developed multi-parameter orifice plate flow meters, which can simultaneously measure temperature, pressure, and differential pressure with a single sensor. This allows for accurate calculation of gas flow under standard conditions or steam mass flow.

Features of DP flow meter orifice plate

• Easy structure and stable performance
• Long service life
• Low price cost orifice plate flow meter
• Orifice flowmeters have a wide range of applications
• Various sizes available: 2”, 4" orifice plate flow meter, 6”, 8”, 10 inche.,etc
• High stability
• Turn down range: 3:1~4:1
• Suitable for measuring media such as steam, coal oven gas and cooling water, blast-furnace gas, compressed air or dirty fluids
• Can be used as high temperature flow meter or high pressure flow meter