(Seeking help) Consultation on flow meter selection
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It is a process pipe with an inner diameter of 40 mm; the straight section is only 200 mm long. Flow rate measurement is required, within the range of 0.5 t/h. The pressure loss should also be as low as possible, around 1 kPa. The flow rate is very low, the straight pipe section is too short, and a low pressure loss is required; traditional throttling devices simply won’t work – it’s too difficult. Do anyone have any recommended types?
There’s no density data here, nor any information on flow velocity; presumably it isn’t very high； It’s a mass flow meter; you can’t choose one with large bends ；
Liquid? Steam? Without temperature, density, and pressure information, it’s difficult to pay attention
I need to measure the flow rate of a liquid, which is similar to water, under conditions of 2 MPa and 200°C. Could you please suggest any suitable options? Thank you very much
Let’s see what the required range ratio is. I just did some calculations. Under the condition of meeting the pressure drop requirements, the range ratio of the balanced flow meter is around 5:1. The straight pipe sections are fine: 2.5 at the front and 2.5 at the back, which meets the requirements for balance.
Meters with low pressure loss and minimal requirements for straight pipe sections include electromagnetic, vortex flow, balanced (balanced refers to non-standard orifice plates), mass, and ultrasonic types (the first type has a shorter range of 15D and lower accuracy). If conductivity is a factor, an electromagnetic flow meter is the preferred choice; the specific selection depends on the process requirements
First, what is given when specifying the process medium? This is too important
Thank you. I’ll look into the balanced flow meter further. May I ask what software you used for the calculations? For flow rate, there are formulas available only for standard throttling devices; as for other aspects such as pressure loss and range ratio, I don’t know how to verify them
A balanced flow meter, also known as a multi-nozzle flow meter; the pipe section must be suitable, and the pressure loss also needs to be taken into account
I’m from the manufacturer; Shanghai Keyang is the importer of the balanced flow meter. I use A+K software. For specific details, you can contact our business department via the official website. You can search on Baidu. There are many balance flowmeters available in China at present, most of which are imitations.