The gas passing through the turbine meter rotates the turbine, whose revolutions are proportional to the speed of the gas flow.
The revolutions of the turbine are transmitted by a special transmission mechanism (it can be mechanical or magnetic) to the counting mechanism.
Turbine gas meters used for commercial gas metering must be three lengths (3D) of the meter diameter to avoid additional errors due to the uneven distribution of gas flow velocities.
These meters, together with the mechanical calculation mechanism, usually have an electrical converter, which can be used to transfer the value of the measured gas volume to the gas volume computer-corrector, which, after evaluating the change in pressure and temperature measured by the corresponding sensors, calculates gas volume under normal conditions.
To ensure the reliability and accuracy of gas metering, turbine meters can have several electrical converters and a control wheel that constantly current condition of the turbine wheel.
Features
Using medium: natural gas, Argon, Butane, Ethane, Nitrogen
Maximum working pressure: up to 16 bar (1.6 MPa)
Max. permeability at atmospheric pressure: 250 m³/h
Temperature limits: -25°C to +55°C
Body material: aluminum
Counting mechanism: standard: 8-digit index, optional optical coding index
Accuracy: Qmin ≤ Q < Qt % &Qt ≤ Q ≤ Qmax ± 1%(Qt according to EN12261)
Repeatability: 0.1% or better
Flow direction: left to right - right to left
Appendices
