1. The sharp side of the orifice should face the fluid flow as the inlet end and the flared side as the outlet end. If installed backwards, the display will be much smaller. Solution: Check the orientation of the orifice plate and properly install the orifice plate.
LSAW Pipe
LSAW is short for longitudinally Submerged Arc Welding, it is a weld method,. Factory make Steel Plate in the mold or molding machine pressure into using double-sided submerged arc welding.
Specifications for LSAW pipe
1. Material: LSAW Carbon Steel Pipe:20#,45#, Q235,20G,A106, A53,API 5L GR.B,X42,X52, X56, X60,X65,X70,X80. Alloy steel:12Cr1MoVG,10GrMo910,15GrMo, P12, P11, P22,P5,P9,P91.Stainless steel:TP304(H),TP304L,TP316(H),TP316L.
2. Standard:BS,GB,ASTM, API, DIN.
3. End:Plain end, bevel end.
4. Packaging:Plastic pipe cap and steel strips bundled or as you request.
The process of LSAW pipe
UOE process
Roll bending process
Progressive forming process
Progressive folding process
Longitudinal weld steel pipe is used for low pressure liquid delivery, such as water, gas and oil.
LSAW Carbon Steel Pipe,API LSAW Steel Pipe,Longitudinal Weld Steel Pipe,Straight Weld Steel Pipe CANGZHOU HENGJIA PIPELINE CO.,LTD , https://www.hj-pipeline.com
2. The edge of the orifice plate is worn. If the orifice plate is used for a long time, especially if the measured media is mixed with solid particles and other impurities, it will cause changes in the geometry and size of the orifice plate, if the opening is enlarged or The edge of the opening becomes dull, the measurement pressure difference will become smaller, and the flow display will be lower.
Solution: Reprocess the orifice.
3, transmitter zero drift:
If it is used for a long time, the zero point of the transmitter may drift. If it is negative drift, the display pressure difference will decrease and the displayed flow will also decrease.
Solution: Correct the zero point of the transmitter.
4. If the length of the upper and lower straight pipes is not long enough for the upper and lower straight pipes, the gas will not be fully developed if it is not long enough. This will cause large errors in the measurement result. If there are multiple elbows in the upstream straight pipe, the measurement results of the zombie will be biased. low.
Solution: The transformation of the steam pipe is to ensure that the length of the upstream and downstream straight pipe sections meets the specified requirements. Add a rectifier before the throttling device.
Three-Valve Differential Pressure Transmitter Gas Leak If the high-pressure valve cargo balance valve in the three-valve manifold leaks, the measured differential pressure will decrease, and the measurement result will be low.
Solution: If the high pressure valve in the triple valve group leaks, tighten the valve and replace it if necessary. If the balance valve in the three valve group leaks, tighten the valve and replace if necessary. 
