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Procedure
1. Activate SCROLL.
2. Check the current viscosity range.
The meter factor will be calculated for this range, and applied only to viscosity
measurements in this range. If you want to calculate a meter factor for a different
range, you must change the viscosity of your process fluid.
3. Record the reference temperature.
This is the temperature specified as Reference Temperature 1 during referred
viscosity configuration. It must also be the temperature used for the laboratory
measurement of dynamic viscosity.
4. Obtain a laboratory value for the dynamic viscosity of your process fluid at reference
temperature.
5. Activate SCROLL.
6. When ENTER DYNV is displayed, activate SELECT and enter the laboratory reference
value for the dynamic viscosity of your process fluid at reference temperature.
7. When APPLY SCALE FACT is displayed, activate SELECT.
8. View the results.
a. The new viscosity meter factor is displayed.
b. Activate SCROLL.
c. The adjusted referred viscosity value is displayed.
The default value for Viscosity Meter Factor is 1.0. The recommended range is 0.8 to
1.2. If your calculated meter factor is outside this range, contact Micro Motion
customer service.
9.3.2 Adjust viscosity measurement with Viscosity Meter Factor
using ProLink III
You can adjust viscosity measurement by applying a viscosity meter factor. The measured
dynamic viscosity is always multiplied by the viscosity meter factor. The result is used in
further calculations.
The default value of Viscosity Meter Factor is 1.0. Accordingly, the default value has no effect
on the line viscosity value.
Your meter is calibrated for one to four viscosity ranges. There is a separate meter factor
for each range. You can calculate or enter a meter factor for any or all of the viscosity
ranges.
Tip
You can adjust line viscosity measurement with Viscosity Meter Factor, Viscosity Offset, or both. Viscosity
Meter Factor is applied to the measured dynamic viscosity, and Viscosity Offset is added to the result.
Kinematic viscosity is calculated from this value. Referred viscosity may be calculated from either
dynamic viscosity or kinematic viscosity, depending on the configuration.
Measurement support
138 Micro Motion
®
Fork Viscosity Meters (FVM)