ABB CoriolisMaster FCH400 Series Operating Instructions Manual page 105

CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | OI/FCB400/FCH400-EN REV. E
Menu / parameter
Device Setup / ...Field Optimization
Density Correction
Qm Correction
......Hold Last Good Val.
......Pressure Correction
Measuring Mode
Conc. Zero Matrix 1
Conc. Zero Matrix 2
Device Setup / ...Field Optimization / ......Hold Last Good Val.
Hold Time
Threshold Hold
Threshold Release
Device Setup / ...Field Optimization / ......Pressure Correction
Pressure Unit
Pressure Level
Description
Sets the correction factor for field optimization of the density measurement.
This factor can be used to perform optimization in the field in order to achieve a degree of accuracy in the density
measurement that closely approximates a repeatability of 0.0001 g/ml.
Sets the correction factor for field optimization of the mass flow measurement. The value is entered as a percentage of the
current measured value.
This factor can be used to perform optimization in the field in order to achieve a degree of accuracy in the flow
measurement that closely approximates or even exceeds a repeatability of at least 0.1 % of the measured value.
Selection of submenu '......Hold Last Good Val.' using
Selection of submenu '......Pressure Correction' using
Selection of the measurement mode (liquid / gas). The measurement method for liquids and gases can be optimized by
selecting the measurement mode.
• Automatic: Automatic detection of the measurement mode. Selection with changing measuring media.
• Gas: Selection with pure gas measurement.
• Liquids: Selection with pure liquid measurement.
Optimization is necessary in the following cases only:
• When filling liquids in which considerable gas content can appear at the beginning or end of the filling process (surge).
In such cases, the dynamics are considerably increased if the measurement mode is set to 'Liquids'.
• When measuring gases in which considerable liquid inclusions or liquid phases can appear at specific times. In such
cases, the dynamics are considerably increased if the measurement mode is set to 'Gas'.
In all other cases, the measurement mode can remain in the default setting of 'Automatic'.
Setting indicating the correction factor for concentration measurement.
This factor can be used to perform optimization in the field in order to achieve a degree of accuracy in the concentration
measurement that closely approximates or even exceeds the repeatability.
This value acts as a correction value for the current concentration measured value. The correction factor is entered in the
unit that is currently set for concentration. The correction value is based on the concentration matrix currently selected.
In the case of one fixed matrix, only one correction value is available.
In case of variable matrices, both correction values are available.
The parameter is only available when the DensiMass function is activated.
Entry of the time for the function 'Hold Last Value'.
The function is deactivated by the setting of '0'.
Sets the switching threshold for the function 'Hold Last Value'.
The current measured value is displayed if the sensor voltage is above the set value.
Sets the switching threshold for the function 'Hold Last Value'.
The last valid measured value for the duration of the set hold time is displayed if the sensor voltage is below the set value.
Selection of unit for pressure (e.g. for the associated parameters and the corresponding process values).
Factory setting: bar
Input of the process pressure of the medium in the meter tube.
The value is used to compensate for the influence of pressure on the measurement of the mass flow and the density.
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