20 m^3/h, with water as the medium, what are the constant flow rate control methods? !
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This post was last edited by juniger on 2020-1-2 at 13:57. For a flow rate of 20 m^3/h with water as the medium, what are the available methods for constant flow control? ! 1. Centrifugal pump + flow meter + PLC? 2. Reciprocating pump? 3. Roots pump? Which method is better, guys? The traffic control requirements are not high; around 20 is sufficient.
The traffic control requirements are not high; around 20 is sufficient.
For centrifugal pumps, add a flow meter along with high/low level alarms; as for metering pumps, I’d like to know whether they are reliable
1. Centrifugal pump + flow meter + PLC, with additional high/low flow alarms, is the most stable and safe option
A centrifugal pump + flow meter + PLC, along with high/low flow alarms, represents the most stable and secure solution. I agree with what the brother on floor 5 said; back in the 1990s, when pneumatic instruments were still in use, this combination could maintain flow control with an accuracy of 2%, let alone nowadays
Metering pumps are all small-sized; in my case, the requirement for flow rate accuracy is very low.
There are fluctuations; the inlet is a large pool, and the liquid level changes.
I really don’t have any high demands when it comes to precision. In the case of a combination of PLC + flow meter + control valve, programming is still required primarily. I just want to get a pump (reciprocating), and then I can adjust it there.
Centrifugal pump + flow meter + frequency converter