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9. Cautions
(1)
Be careful when installing or uninstalling the rotor; rise softly the joint screw
and never force it. Never put the rotor to receive the force horizontally to
prevent it from being bended.
(2)
Never lie down or tilt the viscosimeter once it is mounted and installed.
(3)
Always keep clean the joint screw and the nut of the rotor; otherwise,
measurements and correct operation could be affected.
(4)
Hold the ascending and falling rack with the hand every time the viscosimeter
is moved up or down to avoid it from falling due to its weight.
(5)
After changing rotor, input the correct rotor number. Always clean the rotor
before installing; never clean the rotor once it is installed in the equipment.
(6)
When changing the sample, clean and dry the rotor and the protective frame
to avoid mistakes in measurement due to the mixture of samples.
(7)
Each viscosimeter has been calibrated and adjusted with its own set of rotors,
never interchange rotors between different viscosimeters.
(8)
Never dismantle neither change any spare part of the equipment.
(9)
When moving or transporting the viscosimeter, do not forget to put the yellow
cap to protect the joint screw; use the case to transport all the pieces properly
protected.
(10)
Once the rotor is installed, do not make it turn for a long time without liquid to
avoid it from being damaged.
(11)
In non Newtonian liquids, values of viscosity vary with speed and time so as
the results obtained with different rotors and speed can vary. This is normal in
this kind of liquids; it is not a problem of the equipment. Usually the rotor,
rotating speed and measuring time must be adjusted to each non Newtonian
liquid.
(12)
To obtain a high accuracy of results, please, bear in mind the following points:
a． More precisely control of the temperature of the liquid to be measured
b． Immerse the rotor in the liquid to be measured for an enough long time
and keep it always at the same temperature.
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