Orifice meter scale installation matters needing attention

Abstract: the orifice meter scale installation note information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Orifice meter installed at the inlet and outlet of the need to manufacturer logo direction installation, not installed, with gasket sealing heads, install bypass pipe is when don't need to test the gas flow, or orifice meter repair, closed pipe orifice meter. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the orifice meter scale installation considerations article details. Orifice meter installed at the inlet and outlet of the need to manufacturer logo direction installation, not installed, with gasket sealing heads, install bypass pipe is when don't need to test the gas flow, or orifice meter repair, close the orifice meter pipeline valve, open the bypass valve can run normally by-pass pipe lines. Install by-pass pipe is in the differential pressure type orifice meter MengHui installed correctly or not directly affects the measurement accuracy. 1, the standard throttle device using conditions: (1) fluid on the physical and thermodynamic single-phase fluid must be uniform; (2) shall not occur when the fluid flows through the throttle device; (3) beam must be parallel to the pipeline, can not have rotational flow. (4) fluid can be measured by the throttle device must be steady flow, the gradual change of or is considered to be a stable fluid, does not apply to the pulsating flow and critical flow measurement; (5) fluid must be full of round tube, and continuous flow through the throttle device; 2, install basic requirements (1) the vertical degree of throttling upstream face and pipeline axis of vertical degree is not greater than 1 & deg; 。 (2) not alignment throttling a coaxial with pipes. When the axis of the throttling parts and on the downstream side е x for the distance between the pipe axis, no additional uncertainty of outflow coefficient C: е x = ( 0. 0025 d) / ( 0. 1 + 2. 3β 4) 。 As above type can not meet, and meet the type, the uncertainty of outflow coefficient C should arithmetic addition & plusmn; 0. 3% : 0. 0025 d) / ( 0. 1 + 2. 3β 4) <еx勒; ( 0. 005 d) / ( 0. 1 + 2. 3β 4) (3) straight pipe length of the throttle device should be installed in two section has a constant cross-sectional area between cylindrical straight pipe, zui short straight pipe length with throttling form, choke and diameter ratio, : (4) apply pressure position throttling device installed in vertical pipe runs, take the position of the pressure on plane take pressure device can be arbitrary choice; Throttling device installed in a horizontal pipe or inclined pipe, take the position of the pressure mouth choice depends on the characteristics of the measured medium, the throttle device factory, take the pressure and guide tube are set up between the two bolt holes. Spot welding flanges should be paid attention to when the relative position of screw hole and take pressure. (5) guide pressure pipe guide tube should press is used by the nature of the current body pressure, corrosion resistant materials, the inner diameter shall not be less than 6 mm, length zui to 16 m. Guide pipe should be vertical or inclined, laying the slope shall not be less than 1:12; High viscosity fluid, the slope should also increase, a cop pressure signals from more than 30 m, pressure pipe should block laying, and in all the zui high and zui low respectively installed gas collector ( Or exhaust valve) And settler ( Or drain valve) 。 In order to avoid the differential signal distortion, positive and negative pressure pipe guide pressure should be as close to laying, cold region should add antifreeze equipment. After 6 throttling device used for a period of time, due to the solid particles, liquid with liquid droplets or other impurities in the gas, sharp entry will be dull, so that the flow coefficient increases, causing additional error, should be considered when changing throttling; After using for a long time, in addition, the throttle device under the upstream side orifice Angle easy accumulation of dirt, it makes outflow coefficient change, therefore, should be inspected regularly to exclude dirt. Differential pressure type orifice meter installed correctly or not directly affects the measurement accuracy. All landowners throttling device surface application soft gauze wipe the surface, may not use sand paper, file tools such as damage entrance surface and sharp mouth. Today the throttle device before the installation must be strict with high-pressure steam pipe flushing, prevent the runtime tube oxides, such as welding slag foreign body damage the throttling parts. Pet-name ruby when the throttle device assembly, it is forbidden to use the wire, steel wire and hooks into the throttle wearing a throat pore size, in order to prevent the sharp mouth damage, affecting accuracy; Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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