How can I build a small flowmeter calibration device?
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At present, it is necessary to calibrate flow meters with diameters of 1–4 inches; they are all made of plastic. The idea is to purchase a pump, a Yokogawa electromagnetic flow meter to serve as a reference instrument, a PID controller, and also a control valve, in order to be able to adjust the flow rate. The pipes will be made of PVC, as these are flow meters with very small diameters; changing the diameter would require replacing the pipes in question. It’s not clear whether this approach is feasible. The question is whether the PID controller can maintain a stable flow rate, and whether opening and closing the valve could damage the pump. Are there any small plastic valves available?
You can refer to the calibration device design used by ordinary flow meter manufacturers for this; a small one will suffice
I would like to ask what kind of pump is suitable for use here; pipes in sizes of 1-4 inches are sufficient
Or would it be better to use an inverter to control the water pump in order to regulate the flow rate?
I just want to gently ask whether this can be achieved using a metering pump? Are there any more specific plans, experts?