Siemens SITRANS FUH1010PVDX, Руководство по эксплуатации, Страница: 118 / 308

5-16
CQO:1010PVXFM-3 Section 5
To activate the Liquid Table menu:
Press to move the cursor to the [Liquid Table] menu cell.
Use to select [No] or [Yes].
To register the selection press .
Setting The LiquIdent Slope
The FUH1010PVX measures and reports the flowing liquid’s sonic velocity (Vs) and its temperature (T).
These components create the liquid’s “Vs/T” signature. This signature is a fundamental component of the
LiquIdent routine that identifies positively any liquid monitored by the FUH1010PVX system. Since a
temperature change will affect the sonic velocity of the liquid, a method to balance the measured sonic
velocity to a fixed reference temperature (60ºF/15.6ºC) is provided. The LiquIdent Slope Factor must be
configured to represent the linear change in the liquid’s sonic velocity per degree Fahrenheit. The Liq-
uIdent routine uses this slope factor to maintain an accurate liquid identification as the liquid temperature
varies.
ENT
5.3.2 ACTIVATING THE LIQUID TABLE
The liquid table is used to associate the measured LiquIdent variable (temperature compensated sonic
velocity) with user supplied S.G. and Viscosity. By selecting the Liquid Table you can set the LiquIdent
Slope, Pressure Slope and the LiquIdent Index.
Siemens Dual Path SITE 1
Liquid Table
Table Active No
LiquIdent Slope 2.300
Pressure Slope 0.030
LiquIdent Index 400
Use this menu cell to
activate the Liquid
Table.
Use this menu cell to set
the Pressure Slope.
Use this menu cell to
enter the LiquIdent
Index.
Use this menu cell to set the
LiquIdent Slope. The default
value is 2.300.