Which type of flow meter to choose?
Thread Content
In order to measure the flow rate of rich hydrogen (H2 content is 85%, the rest is CO) on a hydrogen-rich pipeline, what kind of flow meter is more suitable? Which is better, orifice plate or vortex flowmeter? Welcome to give your opinions!
Vortex street is more accurate because it has the following characteristics: ①The accuracy is relatively high and can reach level 0.5. Generally, there is no dead zone when the traffic is large. ； ②Wide measuring range, linear scale ； ③No moving parts ； ④The pressure loss is small. The orifice plate measurement is not very accurate and the loss is huge.
The pressure loss of the orifice plate is large, and the pressure loss of the vortex street is small. The orifice plate has a small range ratio, and the vortex street has a large range ratio. It is difficult to change the measuring range of the orifice plate, and the measuring range of the differential pressure transmitter needs to be changed. Vortex Street is easier.