4-47
1010GCNFM-3C
Section 4
4.7.3 CALIBRATE FLOWRATE AND CALIBRATION TABLES
FUG1010GCN equipment provides three ways to condition the calibration performance of its flowrate
output: Intrinsic (factory set), Kc, and Calibration Tables 1 through 3. Access to these calibration options
is found in the [Calibrate Flowrate] menu cell and the three [Calib. Table] menu cells of the Data Span/
Set/Cal menu (refer to Data Span/Set/Cal menu on next page).
The intrinsic calibration of the FUG1010GCN is excellent as confirmed by numerous laboratory and field
trials under diverse application conditions. Siemens can confidently say that in any given application, the
majority of conventional flowmeters can not match the system’s measurement range or its linearity.
Intrinsic
When selected, the flowmeter uses no slope adjustment at all. Output data is still zeroed and corrected
for Reynolds number, but no slope adjustment is imposed on the flowmeter’s flow register.
Some applications may require an output adjustment to match an official external reference. The [Cali-
brate Flowrate] menu allows you to select a calibration mode. The right-hand column shows the active
calibration mode. You can select Intrinsic (factory) and Kc (Slope Correction) Calibration. Selecting either
of the external calibration modes will not eliminate the Intrinsic (factory) calibration. You can use this
menu cell to switch between Intrinsic and Kc at any time.
Kc Calibration
For most applications, the measured flow range produces a linear meter response. Therefore, the Kc
(slope correction) calibration is the preferred method since it only requires a single correction factor for
all the flow rates encountered.
NOTE: Changing the calibration can cause profound changes in a flowmeter’s operating charac-
teristics. Use only the most respected flow standard to obtain a correction factor. The
percentage you enter must provide an accurate and consistent shift across the entire
flow range anticipated for the application.
Data Span/Set/Cal Calibrate Flowrate Intrinsic
Kc x.xxx
Calib. Table 1 Index Variable Flow
Vs
Viscosity (cS)
Viscosity (cP)
S.G.
Valc
Vaer
Temp1
Reynolds #
Pressure
Aux
Calib. Table 1 New Point Cal. Index Value x.xxx
PosFlow Corr x.xxx
NegFlow Corr x.xxx
Accept/Clear Accept Pt.
Clear Pt.
Table Active 1 No
Clear Table 1 No
Yes
Data Span/Set/Cal Menu (Calibration Section)
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