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4.6.3 Configure referred viscosity measurement, Matrix
Referral method
Referred viscosity is line viscosity corrected to a reference temperature. In other words, this
is the viscosity that the device would report if the line temperature matched the reference
temperature. The matrix referral method can be used for all process fluids. It is not based
on ASTM D341 standards.
• Configure referred viscosity measurement, Matrix Referral method, using ProLink III
• Configure referred viscosity measurement, Matrix Referral method, using the
Field Communicator
Configure referred viscosity measurement, Matrix Referral
method, using ProLink III
ProLink III Device Tools > Configuration > Process Measurement > Referred Viscosity
Overview
Referred viscosity is line viscosity corrected to a reference temperature. In other words, this
is the viscosity that the device would report if the line temperature matched the reference
temperature. The matrix referral method can be used for all process fluids. It is not based
on ASTM D341 standards.
You can set up referred viscosity calculations for up to six process fluids. You must set up at
least two.
Prerequisites
For each process fluid, you must know its viscosity at two or more temperatures. You must
use the same temperature values for all process fluids. You can enter up to six
temperature–viscosity pairs for each fluid.
Procedure
1. Choose Device Tools > Configuration > Process Measurement > Referred Viscosity.
2. Set Referred Viscosity Method to Matrix Referral, and click Apply to refresh the screen.
3. Set Matrix Data Unit to the viscosity unit that the referred density measurement will be
based on, then click Apply to refresh the screen.
Important
If you change the setting of Matrix Data Unit after entering viscosity data in the matrix, no
conversion is performed. You must re-enter the viscosity data using the new unit.
4. Set Reference Temperature to the temperature to which viscosity will be corrected.
The reference temperature must be within the temperature range of the matrix. It
does not need to match one of the temperature values used to build the matrix.
Configure process measurement
46 Micro Motion
®
Fork Viscosity Meters (FVM)