Cannon CT-1000 User Manual
CONTENTS
i
1
2
3
INTRODUCTION 1
Overview ............................................................................................................................. 1
Safety features ...................................................................................................................... 3
Operator Safety .................................................................................................................. 3
UNPACKING AND ASSEMBLY 5
Unpacking the CT -1000 ....................................................................................................... 5
Assembly procedure ............................................................................................................. 5
Glass jar installation .............................................................................................................. 6
Motor-stirrer ............................................................................................................ 8
Inserting viscometer tubes/thermometers................................................................................ 9
Filling the bath .................................................................................................................... 10
Draining the Bath ................................................................................................................ 11
BATH OPERATION 13
Turning on the CT -1000...................................................................................................... 13
Setting the bath temperature ................................................................................................ 14
Fixed temperature adjustments ................................................................................ 14
V ariable temperature adjustments ............................................................................ 14
Setting the Limit Control ..................................................................................................... 15
A
B
C
D
APPENDIX A — CT-1000 PROBLEM ANALYSIS 17
APPENDIX B — CORRECTING SHAFT & IMPELLER MISALIGNMENT 19
Shaft run-out correction ...................................................................................................... 19
APPENDIX C — CHOOSING A TEMPERATURE BATH LIQUID 21
APPENDIX D — ADJUSTING TRIMPOTS (POTENTIOMETERS) 23
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
ii
E
F
APPENDIX E — CT-1000 SPARE PARTS LIST 25
WARRANTY/RETURN INFORMATION 27
Products limited warranty.................................................................................................... 27
Reagent and chemical warranty ........................................................................................... 27
Returning a product to CANNON®.................................................................................... 28
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
1
1
Overview
CT-1000 function
Temperature range
Manual/video
INTRODUCTION
The CANNON® CT-1000 Constant Temperature Bath is designed to
maintain precise temperatures at a wide range of settings for accurate
viscosity measurements. Because of its temperature stability and ease of
use, it is also suitable for any other application where temperatures must
be maintained within close tolerances.
The CANNON® CT-1000 will maintain temperatures of 20°C to 100°C
within 0.01°C and temperatures of 101°C to 150°C within 0.03°C.
This manual is intended to provide information on the installation,
characteristics and operation of the CANNON® CT-1000 Constant
T emperature Bath. The manual materials are supplemented and enhanced
CANNON
Figure 1: The CT-1000
®
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
2
by an instructional video shipped with the bath.
Temperature selection
Bath description
T en 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 adjustments. By switching to the variable setting on the front panel, the operator can set any temperature within the operating range of the instrument.
The bath chamber is a cylindrical clear Pyrex® vessel 300 mm (12 inches)
in diameter and 300 mm (12 inches) high. A stainless steel baf fle 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. T wo 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 connected to tap water or a cooling system, permits operation below or
slightly above ambient temperature.
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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
Safety features
3
Overheat thermistor
Thermistor detection/cutoff
Liquid-level control float
Operator Safety
A thermistor in the bath senses any over-temperature fault condition. If
such a condition occurs, all power is removed from the bath until an
operator resets the over-temperature limit circuit.
If the control thermistor is disconnected, all power to the bath heaters is
cut off.
Operation of the bath is not possible unless it is filled with liquid to a safe
operating level. A liquid-level control float prevents the control circuit
from heating the bath until the safe operating level is attained. The bath
heaters are automatically turned off if the bath liquid drops below the
minimum safe level.
All technicians who use the CT-1000 should follow these basic safety
procedures:
Do not place the CT-1000 system on an unstable cart or stand. The
CT-1000 should be placed on a stable laboratory table or bench.
If any liquids are spilled into the electronic components of the CT-
1000, contact CANNON
®
Instrument Company immediately .
Do not position power cords so that they are likely to be walked on
or pinched by items placed on or against them. Keep all connections
as neat as possible.
If the CT-1000 will not be used for an extended period of time,
unplug the power cord from the wall outlet. To disconnect the power
cord, pull it out by the plug. Never pull the cord itself.
CAUTION
Do not attempt to service the CT-1000 system by removing panels and
trying to effect repairs. Contact CANNON® Instrument Company regarding service and repair needs.
CAUTION The bath fluid used with the CT-1000 may be dangerous. Use the proper
safety precautions when handling the bath fluid in use (refer to the
Material Safety Data Sheet included with the bath fluid for more detail.)
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
4
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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
5
2
UNPACKING AND ASSEMBLY
This chapter of the manual provides assistance in unpacking and assembling the CT-1000 Constant Temperature Bath. For additional assistance,
consult the instructional video.
Unpacking the CT-1000
The CANNON® CT-1000 Constant Temperature Bath is shipped in two
boxes:
Box 1 contains the glass jar, front glass panel pieces, jar gasket top,
trimpot adjust screwdriver, Allen wrench, seven hole covers, rubber
thermometer holder and instruction manual.
Box 2 contains the bath housing, including the electronics drawer.
Box 2 also contains a smaller box with the motor and stirrer, including the impeller and mounting plate.
The bath unit housing is shipped completely assembled. However, the
glass jar, the glass panels, and the motor and stirrer must be installed in it.
T o allow this, some disassembly of the bath unit housing is required. The
tools required are a utility knife, phillips screwdriver, and a 1/8" Allen
wrench. The Allen wrench is included with the bath.
Assembly procedure
1. Unpack the bath unit housing.
CANNON
Figure 2: Primary bath components after unpacking
®
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
6
2. Move the bath
unit housing to its
permanent location on the
laboratory bench.
3. Remove all eight
screws from the
stainless steel top
covers (see Figure
3).
4. Disconnect all
probes, heaters,
and float switch
from the rear
panel.
5. Remove the front top cover and rear top cover (see Figure 4 and 5).
Use caution when removing the rear top cover because the temperature control probes and heating elements are attached to it.
Figure 3: Removing screws from top cover
Figure 4:
Removing front top cover
Glass jar installation
1. Remove the glass jar from its
WARNING
CANNON
The glass jar is heavy. Use
caution when lifting it.
2. Make sure the rubber support
®
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
box.
ring is seated properly around
the bottom jar opening in the
bath unit (see Figure 6).
Figure 5:
Removing rear top cover
Figure 6: Checking support ring
3. Place the rubber gasket
around the top rim of the
jar (see Figure 7). The
rubber may have to be
trimmed slightly to allow
the ends of the rubber
gasket to meet with no gap
when placed around the
rim.
4. Remove the large piece of
foam packing from the
inside of the cabinet. Also
remove the small piece of
foam from the float level,
Figure 7: Placing gasket
located on the upper lefthand corner of the inside of the cabinet.
5. Lower the glass jar into the cabinet so it seats evenly on the rubber
support ring (see Figure 8).
7
CANNON
Figure 8: Installing bath jar Figure 9: Placing inner glass plate
6. Unwrap the two glass panels. Place the thinner of the two piece of
glass in the slot closest to the jar (see Figure 9).
7. Place the wider (tempered) piece of glass in the front slot furthest
away from the jar. The middle slot is left empty as a vapor barrier.
8. Replace the rear top cover. Align the four holes, then insert and
tighten the screws.
9. Replace the front top cover. Line up the four holes, then insert and
tighten the screws.
10. T o ensure that the gasket forms a tight seal with the top covers of the
bath, proceed as follows:
®
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
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