Cannon Instrument miniPV-X - Manual (Page 37)

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CANNON ® miniPV-Series Automatic Viscometer with VISCPRO ® Instruction & Operation Manual
Version 1.a— January, 2011; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
completed. Sensor training data remains valid until the sensors are
retrained at the same temperature. Retraining is necessary only when the
viscometer tube is changed, or if sensor performance changes over time.
Train Tube Sensors To train tube sensors, click Service menu and select the Train Tube
Sensors menu for the desired instrument. The Train Tube Sensors
window will open.
Prewash option: Click the Prewash option if the tube is not clean and
dry. VISCPRO will initiate a cleaning cycle using current wash configu-
ration settings prior to initiating the sensor training procedure.
Trip Points Only option: Click the Trip Points Only option to adjust
the sensor trip points without setting the voltages. This is useful if it is
neccessary to adjust trip points on sensors for which voltages have
already been set.
After selecting the desired training options click START and follow the
software prompts to complete the sensor training.
Standard tube calibration
During standard calibration, the software uses check standard data
obtained from miniPV Series tests to perform the mathematical calcula-
tions necessary to derive new constants for each timing bulb of the
viscometer tube. Then the VISCPRO software displays the new con-
stants and computes a viscosity (in cSt) for each sample using the actual
flow time of the check standards. The resulting viscosity calculation is
compared with the known viscosity of the standard; absolute and com-
parative data is displayed on the computer screen.