Cannon Instrument miniPV-X - Manual (Page 9)

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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
Sections 9-11 of ASTM D445 provide detailed instructions for using
manual viscometers. ASTM D 446 suggests a minimum flow time of 200
seconds for nearly all the glass capillary viscometers (see tables in ASTM
D 446).
Automatic viscometers For automatic viscometers, ASTM D445 Section 6.1.2 states, “Auto-
mated apparatus may be used as long as they mimic the physical condi-
tions, operations or processes of the manual apparatus they replace ...
The automated apparatus shall be capable of determining kinematic
viscosity of a certified viscosity reference standard within the limits stated
...”
Thus, automated viscometers can be used with flow times less than 200
seconds, as long as the kinetic energy correction and precision require-
ments are met.
miniPV Series tube characteristics Each standard miniPV Series viscometer tube has two bulbs, each of
which has its own calibration. The normal flow times for each bulb are
40-400 seconds. Each tube has a hundredfold measurement range (for
example, range from 2-200 cSt or 20-2000 cSt for each tube).
NOTE CANNON ® Instrument Company has not recommended the use of longer
flow times with the miniPV Series, as shorter flow times allow greater
productivity. With longer flow times, the sample throughput would be
significantly reduced. However, the viscometer and software design does
permit longer efflux times (up to 600 seconds) as desired by the user.
Safety cautions
Please observe the following safety procedures and notices for proper
operation of the miniPV Series:
Do NOT lift the unit by the side panel “ears”. Always support the
unit from the base when moving or lifting.
Make sure that your unit is operated only by qualified personnel.
Make sure that you read and understand all operating instructions and
safety precautions listed in this manual before installing or operating
your unit. If you have questions regarding instrument operation or
documentation, contact
CANNON ® Instrument Company.
Do not deviate from the installation, operation or maintenance
procedures described in this manual. Improper use of the miniPV
Series instrument may result in a hazardous situation and may void
the manufacturer’s warranty.
Handle and transport the unit with care. Sudden jolts or impacts may
cause damage to components.
Observe all warning labels.
Never remove warning labels.
Never operate damaged or leaking equipment.
Manual viscometers