Precautions for on-site installation of orifice flow meter

Abstract: The on-site installation precautions information of the orifice flow meter is provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. When installing the orifice flowmeter, it needs to be installed in the direction of the inlet and outlet marked by the manufacturer. It cannot be installed in the opposite direction. It is tightly sealed with a gasket. The bypass pipe is installed when the gas flow does not need to be detected, or when the orifice flowmeter is overhauled and closed. Orifice flowmeter pipeline. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details of the on-site installation precautions for orifice flowmeters. When installing the orifice flowmeter, it needs to be installed in the direction of the inlet and outlet marked by the manufacturer. It cannot be installed in the opposite direction. It is tightly sealed with a gasket. The bypass pipe is installed when the gas flow does not need to be detected, or when the orifice flowmeter is overhauled and closed. Open the valve of the orifice flowmeter pipeline and open the valve of the bypass pipeline to operate the bypass pipeline normally. The installation of the bypass pipe directly affects the accuracy of the measurement. 1. Conditions of use of the standard throttling device: ① The fluid must be a uniform single-phase fluid physically and thermodynamically; ② The fluid must not undergo phase change when it flows through the throttling device; ③ The flow beam must be parallel to the pipeline and must not rotate flow. ④ The fluid measured by the throttling device must be a steady flow, or it can be regarded as a stable and slowly changing fluid, which is not suitable for pulsating flow and critical flow measurement; 2. Basic installation requirements ① Verticality The verticality between the upstream end face of the throttling piece and the axis of the pipeline is not more than 1°. ②The throttling piece of different axial degree should be coaxial with the pipeline. When the distance еx between the axis of the throttle and the axis of the upstream and downstream pipes satisfies the following formula, the outflow coefficient C has no additional uncertainty: еx=(0.0025D) / (0.1+2.3β4). When the above formula cannot be satisfied, but the following formula is satisfied, the uncertainty of the outflow coefficient C should be arithmetically added±0.3%: (0.0025D) / (0.1+2.3β4) <еx≤ (0.005D) / (0.1+2.3β4) ③ The straight pipe length throttling device should be installed between two cylindrical straight pipe sections with constant cross-sectional area. The length of the shortest straight pipe section varies with the form of the throttling piece, the form of the blocking piece and the diameter ratio: ④ When the throttling device is installed on a vertical pipeline, the position of the pressure taking port can be arbitrarily selected on the plane of the pressure taking device; Due to the characteristics of the measured medium, when the throttling device leaves the factory, the pressure taking port and the pressure guiding pipe are set between the two bolt holes. When welding on-site flanges, pay attention to the relative positions of screw holes and pressure taps. ⑤ Pressure guiding tube The pressure guiding tube should be made of pressure-resistant and corrosion-resistant materials according to the nature of the fluid to be measured, its inner diameter should not be less than 6mm, and its length should preferably be within 16m. The pressure guiding pipe should be laid vertically or obliquely, and its inclination should not be less than 1:12; the inclination of the fluid with high viscosity should also be increased. When the differential pressure signal transmission distance is greater than 30m, the pressure guiding pipe should be laid in sections, and A collector (or exhaust valve) and a settler (or blowdown valve) are installed at the highest and lowest points respectively. In order to avoid the distortion of the differential pressure signal, the positive and negative pressure guiding pipes should be laid as close as possible, and anti-freezing equipment should be installed in severe cold areas. ⑥ After the throttling device is used for a period of time, due to the solid particles in the liquid, the liquid droplets or other impurities in the gas, the sharp inlet will be blunt, which will increase the outflow coefficient and cause additional errors. In addition, after the throttling device is used for a long time, dirt is easy to accumulate in the lower corner of the upstream side of the orifice plate, which will change the outflow coefficient, so it should be checked regularly to remove the dirt. The correctness of the installation of the differential pressure orifice flowmeter directly affects the accuracy of its measurement. ⑦The surface of the throttling device should be cleaned with soft yarn, and tools such as sandpaper and file should not be used to damage the entrance surface and sharp edges. ⑧Before the installation of the throttling device, the pipeline must be strictly washed with high-pressure steam to prevent the throttling parts from being damaged by foreign matter such as oxides and welding slag in the pipe during operation. ⑨ When the throttling device is hoisted on site, it is strictly forbidden to use iron wires, steel wires and hooks to penetrate the throat aperture of the throttling part to prevent sharp damage and affect the accuracy; the above is the whole content of this article, you are welcome to inquire about the flowmeter selection of our factory , quotation, etc. 'Precautions for On-site Installation of Orifice Flow Meters'

To that end, Beijing Sincerity Automatic Equipment Co., Ltd has successfully built a solid foundation and infrastructure for mass flow meter manufacturing.

There is always a question of how to u shape coriolis mass flow meter, but have you ever thought about the price point? Go to Sincerity Flow Meter to get cost effective offer.

We have abundant experience in providing enhancement services and we are expert in mass flow meter.

mass flow meter are raising the stakes of social marketing, but they also ease the sales process by providing ways for rosemount coriolis mass flow meter to effectively interact with customers.