What should be considered when installing a liquid turbine flow meter?
Turbine meters need ≥15D/5D straight runs, an upstream strainer, clean low-viscosity liquids, flow within calibration range and gas-free liquid.
Liquid turbine meters need: 1) Straight runs — ≥15D upstream, ≥5D downstream; 2) Upstream filter/strainer to protect bearings from particles; 3) Clean, low-viscosity liquids (water, diesel, light oils) — viscosity dampens the rotor; 4) Flow range within the meter calibration (avoid running below minimum); 5) Air removal — entrained gas causes over-registration.
Selection & Installation
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