Nivus NFP Instruction Manual

Also see for NFP: Instruction manual

Contents

Nivus NFP Instruction Manual Manual pdf 65 page image

Parameter SettingNFP - rev. 04 / 23.05.2018 page 6531 Calibration and Calculation Menu (CAL)This menu permits to adjust the level measurement, to adapt flow velocity and analog outputsto the following system as well as to simulate relay switching actions and analog outputs.Fig. 31-1 CAL Menu selection31.1 CAL Menu “Velocity”Fig. 31-2 Submenu flow velocity and value settings>min. velocity< Defines the minimum flow velocity range measured and evaluatedby the transmitter.Default setting: 1 m/sThe minimum velocity can be set to “0” as soon as it is not desired tomeasure the negative flow direction.>max. velocity< Defines the maximum flow velocity range measured and evaluatedby the transmitter.Default setting: 6 m/sPositive and negative velocities are not measuredIf the maximum value is set to “0” it is not possible to measure and to issue the positivevelocity!If the minimum value is set to “0” it is not possible to measure and to issue the negativevelocity!>v-correction< Here it is possible to add a factor to measured and calculated flowvelocity values. Normally it is not necessary to use this parametersince the NFP calculation functions have been optimised regardingfull pipes and flow velocity detection using the cross correlationmethod does not require any calibration as long as physical condi-tions are sufficient.