Orifice plate flow meter accuracy problem
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What do you think about the accuracy of orifice plate flowmeters? One factory mostly uses orifice plate flowmeters, including hydrogen, reduction exhaust gas, circulating water, thermal oil, trichlorosilane materials, etc. However, during the actual production process, it was found that many flow reflections were not very accurate, and it felt that some errors exceeded 50%. I wonder if a colleague uses an orifice plate flowmeter. What is the accuracy in actual operation and what is the error range?
The orifice flowmeter is okay, but I don’t know what you are measuring~~~The Venturi is better for measuring large flow rates.……
Compared with other flowmeters (electromagnetic, vortex, etc.), the orifice plate is less accurate and has a certain measurement range, but it has the advantage of being cheap, free from external interference, and capable of measuring large flows. I'm not a person who specializes in appearance, I just have some knowledge at work and personal opinions, which may not necessarily be correct.
Basically, orifice flowmeters are used to measure liquid flow rates exceeding 1000Kg/h and gas measurements exceeding 200Nm3/h.
The accuracy of the orifice flowmeter is generally 0.5 level and above 1.0 level. The characteristics are:: The price is cheap, the pressure loss is too large, and the accuracy is not high.
Orifice flowmeters are notoriously inaccurate. Is it not just the design done by a small design institute, but also the subjective assumptions of some so-called "polycrystalline silicon brick experts"? In this industry, at this stage from 2007 to 2008, some bosses were eager to launch polysilicon without distinguishing between good and bad. They often worshiped some people in the world as gods. Now it is time to reap the bitter fruits.
I asked a classmate and she said that the orifice flowmeters in their factory are mainly 1.0 level.
I don’t think it’s practical. We all determine the flow rate through calculation, which is a bit troublesome.
I don’t think it’s practical. We all determine the flow rate through calculation, which is a bit troublesome.