Tips for Improving Orifice Measurement Accuracy

Abstract: The information on the know-how to improve the measurement accuracy of the orifice plate is provided by the excellent flowmeter and flowmeter production and quotation manufacturers. The orifice flowmeter is a differential pressure generating device for measuring flow. It can measure the flow of various fluids in the pipeline with various differential pressure gauges or differential pressure transmitters. The orifice flowmeter throttling device is used in conjunction with the differential pressure transmitter to measure the flow of liquid, steam and gas. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The orifice flowmeter is a differential pressure generating device for measuring flow. It can measure the flow of various fluids in the pipeline with various differential pressure gauges or differential pressure transmitters. The orifice flowmeter throttling device is used together with the differential pressure transmitter to measure the flow of liquid, steam and gas. The orifice flowmeter is widely used in petroleum, chemical, metallurgy, electric power, light industry and other departments. So how to improve the measurement accuracy of the orifice flowmeter? 1. The design and installation of the metering device should meet the corresponding standards. The fundamental reason that affects the measurement accuracy of the orifice flowmeter is whether the geometry and flow dynamics of the throttling device deviate from the design standards. Therefore, the system must be regularly checked and maintained during use. Changes in operating parameters such as pressure, temperature, and flow rate in actual use should be corrected in time. The full-compensated flow computer calculation scheme can be used. , in order to reduce the measurement error and ensure the measurement accuracy. 2. Eliminate the pulsating flow in the airflow. The pulsating flow is caused by the sudden change of the flow rate and pressure of the gas in the pipeline, which can cause fluctuations in the differential pressure. The flow calculation formula of the throttling device is based on the stable flow of the orifice plate. , When there is pulsation at the measurement point, the stability principle cannot be established, which affects the measurement accuracy and produces measurement errors. Therefore, in order to ensure the measurement accuracy of natural gas, the pulsating flow must be suppressed. The usual measures are: a. Under the condition that the measurement capacity is met, a measuring tube with a smaller inner diameter should be selected to improve the differential pressure and aperture ratio; b. Use short pressure induction Pipeline, reduce the resistance parts in the pipeline, and make the length of the upstream and downstream pipelines equal, reduce the resonance in the system and increase the pressure pulsation amplitude; c. Eliminate free liquid from the pipeline, and the pulsation caused by the accumulation of liquid in the pipeline can be automatically pigged. 3. Avoid man-made measurement errors, strengthen measurement management, improve the technical quality of operators, and actively introduce and absorb advanced measurement technology at home and abroad. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Tips for Improving Orifice Measurement Accuracy'

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