Cannon Instrument CT-1000 (Contant Temperature Bath) - Manual (Page 11)

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CANNON ® CT-1000 Constant Temperature Bath Instruction & Operation Manual
Revision 3.1e—June, 2011; CANNON ® Instrument Company
2139 High Tech Road • State College, PA • USA 16803
NOTE Two screws located on either side
of the opening for the motor stirrer
serve as locating pins for the
motor support pad. Do not
remove these screws; the holes in
the pad fit loosely over their
heads. The motor line cord should
point toward the rear of the bath
(offset slightly to the right or left).
The motor stirrer should now lie flat
on the top of the bath.
3. Reattach the top heater
housing , making sure that the heater, motor, and fan cords pass
through the left-hand opening (as viewed from the rear) and that the
control probe, over-temperature probe, and level switch cords exit
from the right opening (as viewed from the rear). The back lip on the
rear top cover fits into the slot on the top heater housing. Line up the
holes, insert screws, and tighten.
4. Connect all plugs and probes to the correspondingly labeled sockets
at the rear of the CT-1000 bath unit.
5. Adjust the four feet on the bottom of the bath housing to level the
bath. This should be done before filling the bath with fluid.
Inserting viscometer tubes/thermometers
The top cover of the CT-1000 contains seven apertures, 51 mm (2”)
in diameter, for the insertion of viscometer tube holders. Two additional
holes are provided for insertion of thermometers.
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.
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 (¼") below the top level of the liquid.
Thermometer immersion Proper thermometer immersion is critical for viscosity measurements.
Even a calibrated thermometer will read incorrectly if is it improperly
immersed in the bath. “Total immersion” kinematic viscosity thermom-
eters should be used with the bulb and only the mercury column beneath
the surface of the liquid, but with the emergent stem above the surface at
ambient temperatures.
NOTE Different thermometers have different immersion requirements. Refer to
the information included with the thermometer in use for specific instruc-
tions.
Figure 12: Installing the motor