Operation
4-2 P/N M/97-520
Normal Operation Observations
The following conditions are considered to be normal while the TT100
In-Line Viscometer is operating:
• The drive motor will be hot to the touch.
• The TT100 In-Line Viscometer generates a continuous output
signal that is proportional to the apparent viscosity of the process
fluid being measured.
• Depending upon the viscosity, flow rate, and resultant mixing in the
measuring chamber, the viscometer will respond quickly to the
introduction of new process fluid.
• Since shear conditions, temperature, shear history may differ
between the viscometer and another measurement, it is not unusual
for numerical values to differ. Refer to Correlation with Other
Measurements in Section 1 - Introduction for more information.
• If solids are allowed to form on the internal surfaces of the
viscometer, they may alter span by changing the measuring annulus
dimensions. Solids may also limit the torsion element motion .
Refer to Cleaning In Place in Section 5 - Maintenance for more
information.
Interlocks
Viscometer interlocks are options that prevent the viscometer from being
damaged due to abnormal process fluid temperature or double mechanical
seal assembly pressure. The interlocks prevent the viscometer motor from
being activated when below the calibrated setpoint.
CAUTION
Do not disconnect an interlock from the viscometer. Viscometer damage
may result.
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