Cannon CT-500, Instruction & Operation Manual

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CANNON Instrument Company | Inserting Viscometer Tubes/Thermometers 17
Inserting Viscometer Tubes/Thermometers
The top cover of the CT-500 contains seven apertures, 51 mm (2") in diameter, for the insertion of
viscometer tube holders. Two additional holes are provided for insertion of thermometers. Refer to
Figure 15.
Figure 15: CT-500 Top Cover
Inserting Viscometer Tubes
If necessary, remove the viscometer tube hole cover(s) from the top of the bath and carefully place
the viscometer tube(s), with the proper holder attached, into the bath through the aperture(s) in
the top cover.
Thermometer Immersion
Proper thermometer immersion is critical for viscosity measurements. Even a calibrated
thermometer will read incorrectly if it is not properly immersed in the bath. “Total immersion”
kinematic viscosity thermometers should be used with the bulb and only the mercury column (if
applicable) beneath the surface of the liquid, but with the emergent stem above the surface at
ambient temperatures.
Note: After filling the bath with fluid, adjust the height of the viscometer tube(s)
to ensure that the liquid under test and/or any timing marks on the tube are a
minimum of 6 mm (1/4”) below the top level of the liquid.