How to choose a flow meter under high temperature and pressure?
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Operating conditions: Design pressure of 12.5 Mpag, design temperature of 250 degrees; operating temperature range of 100–220 degrees, with an operating pressure of 6–10 Mpag. The medium is water (water at high temperature and pressure). It deals with large-diameter pipes, DN600. How should a flow meter be selected for such operating conditions? Can ultrasonic waves above 200 degrees be used? Please help to clarify this.
Use a throttling device to control it,,, 200 degrees for ultrasonic waves isn’t feasible, right?
You can try the constant velocity flow meter from the American company VERIS
There’s surely some vibration in such operating conditions, right? Choosing ultrasonic waves isn’t quite the right approach; I suggest using a throttling device. For filling the steam drum of our boilers, we use Wanxun’s DeltaBar devices, and so far they seem to work fine.
Differential pressure flow meter – no issues under these operating conditions: Temperature: 1200°C, Pressure: 320 bar, Accuracy: 1%
Differential pressure flow meters work well, offering good cost-performance
Using throttling elements such as orifice plates or valves will suffice; for other flow meters, a split-type design can be chosen, such as a split-type vortex flow meter. Throttling elements can handle temperatures up to 200 degrees Celsius without any problem. On this basis, the pipe diameter still plays a role; it’s easier to make a choice when the diameter is small. For larger diameters, plug-in electromagnetic types or split-type options are generally available, with the converter part able to be installed in a place with lower temperatures
There’s no vibration; an ultrasonic flow meter is being used now
Orifice plates are cost-effective; other options are too expensive. Electromagnetic types are also good with high accuracy
For high flow rates, bar units are not suitable; throttling is the best option.
You can try a Pitot tube flow meter. There should be no problem; the precision is excellent, and it’s very useful.