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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 Device Tools > Calibration > Viscosity > Viscosity Meter Factor.
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. Enter the laboratory reference value for the dynamic viscosity of your process fluid
at reference temperature.
6. Click Calculate Meter Factor.
7. Wait for a few seconds, then check the 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.
Tip
To view all viscosity meter factors, choose Device Tools > Configuration > Process Measurement > Viscosity.
9.3.3 Adjust viscosity measurement with Viscosity Meter Factor
using the Field Communicator
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.
Measurement support
Configuration and Use Manual 139