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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.
Prerequisites
Referred viscosity measurement must be configured before you can use the meter to
calculate the viscosity meter factor. If you are not using referred viscosity, you must enter
the viscosity meter factor manually.
You must be able to obtain a laboratory value for the dynamic viscosity of your process
fluid at Reference Temperature 1. This temperature value was specified during referred
viscosity configuration.
Procedure
1. Choose Service Tools > Maintenance > Calibration > Viscosity Scaling Factor Cal.
2. 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.
3. Obtain a laboratory value for the dynamic viscosity of your process fluid at reference
temperature.
4. Choose Start Calibration.
5. 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.
6. Choose the current range and enter the laboratory reference value for the dynamic
viscosity of your process fluid at reference temperature.
7. Click OK and wait for a few seconds.
When the calibration is complete, you will be returned to the viscosity calibration
menu.
8. Choose Results.
The new viscosity meter factor and the adjusted referred viscosity value are
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.
Measurement support
140 Micro Motion
®
Fork Viscosity Meters (FVM)