In-Line Viscometer Description
1-12 P/N M/97-520
Sensing Cable
CAUTION
Changing the length of the sensing cable will affect viscometer calibration.
Refer to Appendix A and contact Brookfield Engineering Laboratories for
more information.
The Sensing Cable carries the electrical signal that is proportional to the
viscous drag of the process fluid. The signal is sent to the torque sensor
electronics enclosure for processing. The Sensing Cable also carries an
excitation current from the torque sensor electronics enclosure to the
torque sensor assembly.
Torsion Element
The Torsion Element, which is part of the torque sensor assembly, senses
the torque from the viscous drag on the stator. The twist or deflection of the
torsion element is proportional to the torque applied to it.
Heat Baffle
The Heat Baffle, which is sometimes referred to as an insulator, dissipates
heat from the viscometer that has been transferred from the process fluid.
The transfer of heat to the baffle protects the field coil from high
temperatures.
Torque Sensor Electronics Enclosure
The Torque Sensor Electronics Enclosure contains a circuit board which
processes the signal from the torque sensor assembly and generates a linear
electrical signal (4 - 20 mA) proportional to the viscosity of the process
fluid in the measuring annulus. The circuit board also provides an
excitation current to the field coil.
The 4 - 20 mA signal can be:
• Observed on a readout display
• Transmitted to a personal computer for process monitoring and
control
• Recorded for process control records
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