TT100 In-Line Viscometer Installation, Operation, Maintenance and Service Instructions
P/N M/97-520 C-3
Torsion Element Change
The third item which may be replaced, or have its response (calibration)
altered is the torsion element or viscosity sensing device. There are four
different torsion elements available, each capable of being calibrated over
relatively wide limits, depending upon the sensitivity required. By only
changing the torsion element, or its calibration, the viscosity range will
change without changing the shear rate.
NOTE: Torsion element replacement should be accomplished by the
factory or an experienced maintenance technician.
Electronic Change
The output signal can be altered by changing resistors on the torque sensor
electronics board in order to change calibration/and change viscosity
sensing ranges. Refer to Appendix A and contact Brookfield Engineering
Laboratories for more information.
A selectable high/low range provision exists within the electronics board
for greater accuracy. Factory calibration for both ranges is optional. If not
selected at the time of purchase, dual range calibration may be added.
Refer to Appendix A and contact Brookfield Engineering Laboratories for
more information.
Summary
Viscosity range can be accomplished with any of four methods, in usual
order of practicality; most to least:
a. Stator Replacement
b. Gearbox Replacement
c. Electronics Adjustment
d. Torsion Element Replacement
NOTE: Refer to Tables C-1 and C-2 for shear rate factors and geometry
factors for all rotor/stator combinations.
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