Liquid Turbine meters
has two meter grades to meet various linearity requirements. A standard grade meter for applications requiring 1% or less precision is an affordable option. For greater accuracy, an agricultural grade meter can be used. The expected flow spectrum is shown to achieve more accuracy. On the current flow rate of the row at which the meter was installed and the pressure drop, the flow measurement dimensions should be selected. Never measure the meter quality against the nominal tube volume. See the linear diagram of the spectrum and the pressure drop diagram for the length of the meter. However, overriding the meter over a long period of time will reduce unnecessary stress and pressure and reduce the meter life. For short periods without damage, flow meters could be overridden by 10%.