How To Edit The Viscosity (Cs) Setting; How To Edit The Density (Sg) Setting - Siemens SITRANS FUS1020 Manual

Section 6
After you install the transducers, the computer will measure Vs directly. If the displayed (or edited) Vs
stored in this menu cell is accurate, the transducers will be spaced correctly. This will eliminate the
need to re-space the transducers after their initial installation. However, if the estimated Vs is substan-
tially different from the measured value, the computer will request you to re-space the transducers
during the transducer install procedure.
NOTE: During the Xdcr install procedure (see paragraph 6.4), you can ignore a respacing
request by pressing the <Down Arrow> instead of <ENT>. If this triggers a Spacing
Alarm, check [Diagnostic Data/Site Setup Data] to make sure the measured Vs value
does not exceed the Vs max or Vs min items.
To edit the Estimated Vs m/s:
To activate numeric entry press the <Right Arrow>.
Use PC numeric keys or the KeyPad to enter the sonic velocity value as meters-per-second.
To register the data press <ENTER>.

How to Edit the Viscosity (cS) Setting

The [Viscosity cS] menu cell shows the kinematic viscosity of the selected liquid (in centistokes). The
viscosity value is particularly important for high viscosity liquids. The meter requires an accurate liquid
viscosity to compute the flow profile compensation. If the displayed viscosity is correct, bypass this
menu cell by pressing the <Down Arrow>. Please be aware that the viscosity of the liquid affects the
Reynolds Number compensation applied to the final rate output. Therefore, inaccurate data could
cause flow data errors. Edit this entry only if you know the true viscosity of your liquid. (Note: This
menu cell can be edited without requiring site reinstallation.) If necessary, our Technical Service Group
can provide reliable viscosity data for most liquids.
To edit the Viscosity setting:
To activate numeric entry press the <Right Arrow>.
Use PC numeric keys or KeyPad to enter the Viscosity value, which must be in centistokes.
To register the data press <ENTER>

How to Edit the Density (SG) Setting

Use the [Density SG] menu cell to edit the nominal specific gravity of the selected liquid. (Note: This
menu cell can be edited without requiring site reinstallation.) This allows the flow computer to provide
a flow rate output in mass units, if required. This mode suits applications where the density is not only
known, but also fixed, due to well-controlled liquid temperature and chemistry.
The default specific gravity setting is 1.000. The flow computer uses the liquid's specific gravity to form
a multiplier for the conversion of volumetric flow to mass flow. Mass flow appears (in selected units) on
the display screen. Density SG, as it applies to this system, is defined as the ratio of the mass of this
liquid to the mass of an equal volume of water at 20°C or 68°F.
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1020NFM-1D