The error of the orifice meter scale and correction

Abstract: the error and correction of orifice meter scale causes information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The use of stage orifice meter, the scavenging process piping need many times, frequent disassembling orifice meter. If the orifice size is the same, slightly do not pay attention to errors will occur and change the orifice meter will appear normal. The orifice meter. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the error of the orifice meter scale and correct reason article details. The use of stage orifice meter, the scavenging process piping need many times, frequent disassembling orifice meter. If the orifice size is the same, slightly do not pay attention to errors will occur and change the orifice meter will appear normal. The upstream and downstream side of orifice meter installed backwards, to determine when to install piping within the medium flow direction and the direction of the orifice meter, or it will cause the measured value is low. Because of carelessness, resulting in installing a orifice plate, to make it says on the orifice meter & other; +” The surface at the upstream side of flow. Role is mainly used to pass the pipeline orifice meter produced by the differential signal, of laying pipe length should be between 3 to 20 meters distance, guide tube if it is too short, the flowmeter of the flow measurement fluctuations will get bigger; If it is too long, can produce measuring hysteresis. In industrial production process, most of the gas measurement is to use the standard throttling orifice meter and differential pressure transmitter is used to form a complete set, although the differential pressure transmitter zui high precision can reach 0. 075, but because of various reasons, its measurement error is very big, will be used in industrial measurement of differential pressure transmitter use, this problem will be more obvious. And so on to find the causes of measurement error is overcome by the way, are all has the very vital significance, orifice flow meter to be mainly by the guide tube, orifice, differential pressure transmitter, composed of the orifice flowmeter throttle device component will convert medium flow into differential pressure, differential pressure after pass the pipeline to the bellows is negative pressure chamber, differential pressure transmitter is negative pressure chamber isolation diaphragm is made by silicone oil filling liquid pass differential pressure measuring diaphragm, can make measuring diaphragm or migration. Orifice meter its upstream and downstream face will be damaged or orifice flange gasket, protrude the pipe orifice flowmeter in transportation or in construction personnel in the process of installation flowmeter, will cause the upstream and downstream surface damaged pipeline of protruding or flange gasket will led to measuring error of the meter. Construction personnel before installing the orifice meter hole plate should be inspected carefully, if discover hole plate of upstream and downstream surface damage, should change in time. Standard orifice flow meter is designed through a lot of experiments, it is concluded that, it does not require the actual calibration can be used directly, orifice flow meter in the installation process of possible irregularities, or even errors, which will lead to flowmeter measurement error. Straight pipe before and after the orifice flowmeter has not meet the requirements, before and after the straight pipe is in order to guarantee the stability of the flow of the fluid in the pipeline, but because the process piping often has bifurcate, turns on the emergence of resistant pieces, can make the fluid disturbance, because of its stable phenomenon leading to its measurement error. May demand reasonable design with straight pipe before and after the installation position of the throttle device. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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