Advantages of Helical Rotor Flowmeters in Fuel Measurement

Pulse‑free & high stability – ensures stable and accurate sensor signals, with smooth and quiet operation unaffected by vibration.
Wide viscosity & high turndown ratio – the helical rotor design can measure fluids over a wide viscosity range (e.g., light oils and high‑viscosity heavy oils), with a turndown ratio of up to 10:1.
Excellent accuracy & repeatability – accuracy classes up to 0.2 and 0.5 guarantee fair trade settlement

Precautions for Using Helical Rotor Flowmeter

A filter should be installed before the flowmeter, and the arrow directions on both housings must align with the flow direction.
If the measured liquid contains gas, a gas separator should be installed before the flowmeter.
After correct installation, if the reading is not easily visible, the counter can be rotated 180° or 90° as needed.
Before installing a new flowmeter, push the gears several times from the outlet using a bamboo stick. If they do not move, soak them in gasoline (to remove any sediment left from factory calibration).
The throttle valve should be installed at the inlet of the flowmeter, and the on-off valve at the outlet. When using the on-off valve, open it slowly; do not open it suddenly.
Do not allow steam line purging to pass through the flowmeter.
For continuous operation, a bypass line must be added to the flowmeter.
Before installing the flowmeter, the pipeline must be flushed. Use a straight pipe section (in place of the flowmeter) during flushing to prevent weld slag, debris, etc. from entering the flowmeter.
Do not use water to calibrate flowmeters made of cast iron or cast steel.
During use, the flow rate must not exceed the technical specifications. The optimal operating range is 40–80% of the maximum flow rate.