Installation requirements for orifice flowmeter | Briefly describe the measurement principle of orifice flowmeter? Installation conditions? What media can be measured?

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1. How to install an orifice flowmeter and its usage conditions

The orifice flowmeter is a common throttling flow instrument, which has the characteristics of simple structure, easy maintenance, and stable performance. It is widely used in industries such as petroleum, metallurgy, chemical, power, heating, and water supply. The following is a detailed introduction to its installation method and usage conditions: Installation method: Smooth requirement for straight pipe section: Before installation, the straight pipe section used for throttling should be smooth. If it is not smooth, the flow coefficient needs to be multiplied by the roughness correction factor. Straightness requirement for straight pipe section: The straight pipe section before and after the throttling element must be straight without visible bending. Roundness requirement for straight pipe section: The straight pipe section must be circular, and the roundness requirement within the 2D range of the throttle element is extremely strict, requiring specific roundness indicators to be met. Length requirement for straight pipe section: A sufficiently long straight pipe section is required before and after the throttling element, and its length is related to the form and diameter ratio β of the local resistance element in front of the throttling element. The length of the straight pipe section between the first and second resistance elements on the upstream side of the throttling element can be taken as half of the listed value in the form of the second resistance element and β=0.7 (regardless of the actual β value). Line connection: Connect the signal and power lines according to the installation or installation instructions of the flowmeter. Valve

Installation requirements for orifice flowmeter

operation: Open the inlet and outlet valves with consistent opening. Open the stainless steel three valve group balance valve, slowly open the valves at the high and low pressure ends of the orifice plate, and close the stainless steel three valve group balance valve after the fluid passes through the flow meter of the grinding stove. Fluid conditions for use: Suitable for measuring clean, single-phase, and stable fluids such as liquids, gases, or vapors. If the fluid contains impurities or particles, a filter should be installed to prevent clogging. Environmental conditions: The installation environment should be dry, ventilated, and avoid moisture, corrosive gases, or strong electromagnetic interference. The ambient temperature should be within the range specified by the flowmeter, usually between -20 ℃ and+60 ℃, depending on the model and material. Pressure and temperature conditions: It is necessary to ensure that the fluid pressure and temperature are within the rated range of the flowmeter. Excessive pressure or temperature may cause damage to the flow meter or inaccurate measurements. Installation direction: The installation direction of the flowmeter should comply with the instructions, usually installed horizontally to ensure smooth flow through the throttling element. Maintenance conditions: Regularly check the operating status of the flow meter, clean the throttle and straight pipe sections to ensure no blockage or wear. Regularly calibrate the flowmeter based on usage to ensure measurement accuracy.

2. What are the regulations on the front and rear dimensions when installing a flowmeter?

When installing a flowmeter, there are certain regulations on its front and rear dimensions, mainly to ensu

Installation requirements for orifice flowmeter | Briefly describe the measurement principle of orifice flowmeter? Installation conditions? What media can be measured?

1. How to install an orifice flowmeter and its usage conditions

2. What are the regulations on the front and rear dimensions when installing a flowmeter?

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