DP Transmitter is an essential component of differential pressure flow measurement. With a differential pressure transmitter, the pressure difference before and after the pipe throttling device can be measured. The flow rate can be calculated from the measured value by using the Bernoulli flow equation.
The measuring element of the differential pressure transmitter is carefully divided into multiple levels. And the measurement error is extremely small, so accurate flow measurement can be achieved.
Differential Pressure Flow Measurement System
In simple terms, the differential pressure flow measurement system is mainly composed of the following parts:
- Throttling element: such as the throttling orifice plate, Annubar, etc.
- Differential pressure transmitter: detects the differential pressure value before and after the throttling element.
- Flow Totalizer: calculates the flow value based on the differential pressure. Temperature and pressure compensation can also be performed.
- Accessories: pressure pipes, valves, connectors, etc.
Featured DP Transmitter for Flow Measurement
Sino-Inst produces and supplies a full range of differential pressure transmitters. Including compact type, intelligent type, high static pressure type, high accuracy type, etc.
Benefits
- Differential pressure transmitters are available in a variety of ranges for a wide range of applications;
- Even at high static pressures, differential pressure transmitters can measure small differential pressures of only a few millibars;
- An economical alternative to flow transmitters;
Selecting a DP Transmitter for Flow Measurement
Selecting a DP Transmitter requires matching the instrument’s capabilities to the requirements of the application.
Key specifications to consider include:
- Line size: Determines full-size flow and primary component design;
- Fluid type: Liquid, gas, steam compatibility;
- Maximum working pressure: Pressure rating of valve body/flange;
- Temperature limit: Temperature limits of the primary element, sensor, and transmitter;
- Viscosity range: Higher viscosity fluids may require special considerations;
- Required accuracy and turndown ratio;
- Maximum allowable permanent pressure loss;
- Required output: 4-20mA, HART, Modbus;
- Explosion-proof certification: ATEX, IECEx, FM, etc.;
- Other factors include pipeline layout, straight pipe requirements, flow profile, and environmental conditions.
It is recommended to contact our technical engineers for confirmation when selecting a DP Transmitter for Flow Measurement.
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DP Transmitter for Flow Measurement can continuously and accurately generate pressure drop in the pipe. Then use the two pressure measurements to measure the flow in the pipe.
Differential pressure flow transmitters can be easily installed in a variety of applications. The differential pressure transmitters supplied by Sino-Inst support various signal outputs, communication protocols, etc. They can be compatible with the user’s industrial control system.
Sino-Inst is committed to providing users with effective tools for measuring flow. If you need to configure a differential pressure transmitter for flow measurement or have related technical questions, please contact our sales engineer!