Cannon Instrument CT-1000 (Contant Temperature Bath) User Manual
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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
by an instructional video shipped with the bath.
Temperature selection
Ten of the most commonly-used temperatures for kinematic viscosity
measurement can be set by using a switch on the bath front panel. The
bath will equilibrate within a fraction of one degree of the desired
temperature. A fine-tuning control permits further temperature adjust-
ments. By switching to the variable setting on the front panel, the opera-
tor can set any temperature within the operating range of the instrument.
Bath description
The bath chamber is a cylindrical clear Pyrex
®
vessel 300 mm (12 inches)
in diameter and 300 mm (12 inches) high. A stainless steel baffle is
located in the center of the bath and provides a convenient backdrop for
viewing viscometers placed in the bath. The top cover contains seven
round holes 51 mm (two inches) in diameter for insertion of viscometer
holders. Two additional holes are provided for thermometers. Twin
fluorescent lamps provide glare-free illumination of the bath.
A solid-state control circuit equipped with a stainless steel-encased
thermistor provides proportional temperature control. A motor-driven
stirrer ensures that a uniform temperature is maintained throughout the
bath.
The bath housing is fabricated from heavy aluminum and coated with a
corrosion-resistant epoxy. The top cover consists of three layers; a
stainless steel top surface, an insulating layer, and a bottom stainless steel
heat reflector.
Temperature stability
The temperature control of ± 0.01°C below 100°C, and ± 0.03°C from
100 to 150°C, provides the sensitivity required by ASTM D 445 for
kinematic viscosity measurements. A built-in cooling coil, when con-
nected to tap water or a cooling system, permits operation below or
slightly above ambient temperature.
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