Orifice meter and power flow meter installation requirements and usage performance do you know?

In the pipe installation, need to measure the size of the liquid in the pipeline flow, the flow meter is a good measurement equipment, flow meter is an essential part of measuring liquid and gas flow meter, flow meter is a lot of more phyletic, correct installation and use of flowmeter is necessary, the following two kinds of orifice meter and power the flowmeter are introduced installation requirements and way; One, the orifice meter installation requirements 1, new piping system, must be conducted after washing and sweep line pipe orifice plate installation. Orifice plate before installation should check the throttle device number and size is accord with the requirement of pipe installation location. Orifice plate center and the center line of the pipeline should be coincidence, concentricity error must not exceed 0. 015 ( 1 /β - - - - - - 1) The numerical values. Pay attention to the orifice plate installed direction & other; +” Number should be toward a beam. 2, guide according to the nature of the measured medium pressure tube and selection pressure, corrosion resistant materials, the inner diameter shall not be less than 6 mm, length may within 16 meters. 3, orifice plate installed in a vertical path of the director, take pressure position, can take on any pressure device in the plane of arbitrary choice. The main channel of orifice plate installed in horizontal or inclined, apply pressure mouth position. 4, guide pressure pipe should be vertical or inclined, laying the inclination shall not be less than 1:12. High viscosity fluid, the slope should also be increased. A cop pressure signal transmission distance is greater than 3 m, guide tube should be segmented tilt, and in all the highs and lows installed gas collector and settler respectively. 5, in order to avoid the differential signal transmission distortion, the positive and negative pressure guide tube should be close to laying, cold region also antifreezing measures should be taken. Can use electric heating or steam heat preservation, but to prevent overheating of measured medium vaporization and gas generated in the guide pipe fake differential pressure. 6, orifice plate in the pipe installation shall guarantee that the transverse and perpendicular to the pipe axis perpendicularity error must not exceed & plusmn; 1° 。 7, clamping orifice plate with sealing gasket ( Including the ring chamber and orifice plate with flange, ring room) After the clamping, not into the pipe wall. Orifice plate installation area must be tight, there is no leakage phenomenon exists. Therefore, the installation work must be conducted before the pipeline pressure test. Second, the power of the power meter, flow sensor, is according to the working principle of differential pressure type flow sensor, plug-in installation method design. Structure features: science horizontal surface shape, the unique anti blocking design, sensor rough surface treatment and the sedimentation tank. A, install the point 1, basic installations, horizontal pipeline for horizontal pipe, measuring gas recommended when installed in the pipeline within the scope of above 160 degrees, especially for A large number of gas liquid powder, we only recommend this installation; 2, when measuring liquid recommended installation within the scope of the pipeline below 160 degrees, especially to contain a large amount of gas liquid, we only recommend this installation; One thing to note, however, for those who are easily gasified liquid, such as liquid olefin medium, insertion direction when installation with gas, above the pipeline. 3, measuring only recommend sensors installed in steam pipe below 160 degrees Celsius, and to make the sensor in the measuring device of high. B, vertical piping basic installation 1, for vertical pipe, in theory can be installed in 360 degrees. For wet gas containing a large number of moisture, recommend 5 degrees upward tilt sensor installation. 2, recommended for liquid contains a lot of gas, sensor installation tilt down 5 degrees. For steam, recommended installation now 5 degrees tilt sensor, and the sensor should be high in the whole measurement system. C, straight pipe and install the required power; When the pipe, the downstream straight pipe is not long enough, we recommend 2 times after the bend pipe diameter to install power, because of the complicated fluid profile of after the bend, the fluid must be do the appropriate adjustment coefficient K. After the adjustment coefficient K, measuring accuracy for & plusmn; 3%, repeat accuracy for & plusmn; 0. 3%