How to select this flow meter?
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Local flow meter, with a medium density of 800–900 kg/m3; it is used for ordinary liquids that are not highly corrosive. The operating pressure is 1.0 MPa, the temperature is 25 degrees Celsius, the flow rate ranges from 1.2 to 5.5 L/h, and the viscosity is 1.5–5.0 cp. Many glass tube-based flow meters operate at pressures below 0.6 MPa. Which flow meter to choose? How to connect to a DN15 pipe? This post was last edited by marry on 2009-4-1 19:21.]
Either a rotameter or an electromagnetic flowmeter can be used. It should be noted that when choosing an electromagnetic flowmeter, the conductivity of the medium needs to be taken into consideration.
Flow rate: 1.2–5.5 L/h; connection via DN15 pipe. The flow velocity is very low, making it difficult to choose the appropriate model.
Metal tube rotameters can meet the pressure rating, but their lower measurement limit does not satisfy the requirements； An electromagnetic flowmeter or mass flowmeter is recommended, but they are relatively expensive.
Can electromagnetic flowmeters have such small diameters? The quality is too expensive. Are there any other options?
A metal tube rotameter can be used.
With a rotor for remote transmission, the smaller the value, the higher the precision.
For on-site instruments, high precision is not required; a metal tube rotameter (purge type) will suffice