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CT-500 Instruction Manual

Verifying Limit Control Operation

The Limit Control should be checked periodically to ensure its functionality. To check the Limit
Control, follow the procedure below in this section.

Power on the CT-500 and set the instrument to a desired bath temperature. Wait for the bath to
stabilize at the desired temperature.

Using a screwdriver, slowly turn the Limit Control counter-clockwise until the Limit Control OVER
TEMP warning lights up.

Caution:

If the Limit Control fails to light up and the Limit Control has been

adjusted counter-clockwise to its furthest setting, the unit may need repairs.
Contact CANNON for assistance.

When the Limit Control OVER TEMP warning lights up, turn the Limit Control clockwise for ¼
turn and press the OVER TEMP button to reset the Limit Control for normal operation.

Содержание CT-500

Страница 1: ...25 9991 Instruction Operation Manual Constant Temperature Bath CT 500 600 Series ...

Страница 2: ......

Страница 3: ...stered trademarks of Cannon Instrument Company Contact Address CANNON Instrument Company 2139 High Tech Road State College PA 16803 USA Phone 1 814 353 8000 1 800 676 6232 Fax 1 814 353 8007 Website www cannoninstrument com Email Sales sales cannoninstrument com Service service cannoninstrument com Manual P N 25 9991 ...

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Страница 5: ...ssemble 8 Damaged Items 9 Assembly 9 CT 500 Motor Stirrer Installation 11 CT 600 TE Cooler and Motor Stirrer Installation 12 Final Assembly 15 Rear Panel Connections 16 Inserting Viscometer Tubes Thermometers 17 Inserting Viscometer Tubes 17 Thermometer Immersion 17 Filling the Bath 19 Draining the Bath 20 CT 500 Operation 21 Front Panel 21 Turning on the CT 500 22 Setting the Temperature 22 Pre S...

Страница 6: ... Analysis 33 Set Screw Alignment 33 Shaft Run Out Correction 34 Appendix II Choosing a Temperature Bath Fluid 35 Methyl Alcohol 35 Isopropyl Alcohol 36 Silicone Fluids 36 Water 36 Refined White Oils 36 Appendix III Adjusting Trimpots Potentiometers 37 Appendix IV Thermometry for the CT 500 39 Kinematic Viscosity and Temperature 39 Thermometers 39 ASTMThermometers 39 ThermometerCalibration 39 Therm...

Страница 7: ...ower Supply 14 Figure 11 Lower Motor Stirrer 14 Figure 12 Install Rear Housing 15 Figure 13 CT 500 Rear Panel Connections 15 Figure 14 CT 500 Rear Connections 16 Figure 15 CT 500 Top Cover 17 Figure 16 CT 500 Front Panel 21 Figure 17 Motor Stirrer 33 Figure 18 Adjusting Potentiometers 37 List of Tables Table 1 Specifications 7 Table 2 Contents 8 Table 3 Accessories Kit p n 25 4902 9 Table 4 Troubl...

Страница 8: ......

Страница 9: ...n temperatures of 20 C to 100 C 0 01 C The CT 500 includes a built in cooling coil which when connected to tap water or a cooling system permits operation below or slightly above ambient temperature The cooling coil should be used when controlling temperature within 10 C of ambient The precision of kinematic viscosity measurements possible with the CT 500 system meets the sensitivity requirements ...

Страница 10: ... 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 An additional 10 mm 3 8 inch hole is provided for a thermometer A solid state control circuit provides proportional control of the temperature The sensing element for the control circuit is a stainless steel encased thermistor T...

Страница 11: ...rmation about the content that follows Cautions alert the operator to conditions that may damage equipment Warnings alert the operator to conditions that may cause injury It is prohibited to copy or reproduce in part or in whole this manual without authorization by copyright If you should find any part in this manual not clear to understand or missing article contact your local dealer or sales rep...

Страница 12: ...ndition occurs all power is removed from the bath until the liquid level in the bath is restored to the minimum safe level Caution Safety devices may be impaired if equipment is not operated per manual instructions Only qualified personnel should operate the CT 1000 Read and understand all operating instructions and safety precautions listed in this manual before installing or operating the instru...

Страница 13: ...ls and trying to effect repairs Contact CANNON regarding service and repair needs MAINS The MAINS symbol indicates the connections for the AC power supply The AC power input must match the electrical specifications of the instrument Never operate the equipment with a damaged MAINS AC power cable Use only the manufacturer supplied MAINS AC power cable This cable must be inserted into a receptacle w...

Страница 14: ... by pulling it out by the plug Never pull the cord itself Monitor bath fluid level carefully and use caution when operating at temperature set points above ambient temperature Liquid may expand and overflow the jar Observe appropriate safety precautions when handling bath fluid refer to the Safety Data Sheet for your bath fluid for more details Warning Never use flammable bath liquids in any CT 50...

Страница 15: ...and heavy fuel testing waxes paraffin crude oil testing glycols Dimensions W D H 40 7 cm 36 2 cm 61 0 cm 16 in 14 25 in 22 in Weight 22 kg 48 lb Sample Capacity 7 Temperature Range Accuracy 20 C to 100 C 0 01 C Test temperatures 40 C and high ambient temperature test environments require and optional bath cooler Bath Height 12 inches Bath Volume 17 L 4 5 gal Operating Conditions 15 C to 30 C 10 to...

Страница 16: ... the instrument 1 Remove all components from the shipping container s 2 Remove any and all packing materials Styrofoam etc from the components 3 Verify reception of shipped materials by comparing equipment items with packing parts list s Report missing items to Cannon Instrument Company immediately 4 Inspect each component for signs of damage Report damages to the shipper and Cannon Instrument Com...

Страница 17: ... be returned to Cannon Instrument Company the damaged item s should be packaged in the original shipping container Refer to the final chapter of this manual for instructions on returning defective equipment Customers outside the United States should contact the local CANNON agent for procedures on returning products to CANNON Figure 2 CT 500 Primary Components Assembly Assembly is performed in the...

Страница 18: ...ution Use caution when lifting the bath jar as it is quite heavy 4 Position the rear cover containing the motor housing heaters cooling coil and baffle on top of the jar feeding all connecting cables from the heaters float switch and control overtemp probes through the vertical wiring channel in the rear of the housing The back of the motor housing should fit over the vertical channel and the groo...

Страница 19: ...ling the motor stirrer and impeller to prevent damaging sensitive components Do not hold the motor assembly by the shaft as this could bend the rotor shaft out of alignment Note Two standoffs one on each side of the opening for the motor stirrer serve as locating pins for the motor support pad The holes in the pad fit loosely over these standoffs to prevent the motor from vibrating out of position...

Страница 20: ...ooling unit packaged separately To complete CT 600 installation remove the housing sections install the motor stirrer and TE cooling unit and reassemble the housing Follow the procedure below to install these components 1 Remove the two screws securing the rear housing to the bath chassis as shown in Figure 5 Set the screws aside Figure 5 Remove Top Rear Housing 2 Loosen but DO NOT REMOVE the two ...

Страница 21: ...losed by the housing Refer to Figure 7 Figure 7 Install TE Cooler 8 Tighten the two tab screws one on each side of the finned tube During tightening the tabs will orient and seat against the bottom of the bath cover to secure the thermoelectric cooler to the bath cover Refer to Figure 8 Figure 8 Tighten the Two Tabs Caution Make certain that during installation the tabs are oriented so they clear ...

Страница 22: ... impeller shaft down with cut out portion corresponding to the location of the TE cooler as shown in Figure 11 Figure 11 Lower Motor Stirrer 12 Align the motor line cord so it points toward the rear of the bath The motor stirrer should now lie flat on the topof the bath 13 Lower the motor stirrer power cord down through the vertical channel in the rear of the unit 14 Loosely install the front hous...

Страница 23: ...s shown in Figure 12 Figure 12 Install Rear Housing 17 Obtain two additional screws and toothed washers from the Accessories Kit Install the screws to the tabs at the rear of the front housing to secure the housing to the vertical channel 18 Tighten all housing screws to complete the housing installation Final Assembly Connect all remaining plugs and probes to the correspondingly labeled and or co...

Страница 24: ...perature thermistor to the Control Unit Heaters Supplies AC Mains power to the bath heaters Stirrer Supplies AC Mains power to the motor stirrer Fuses Protects against damage or hazard in the event of an internal fault MAINS Provides AC MAIN power entry connection Caution The CT 500 power cord must be connected to an AC MAINS source matching the specifications o the S N label on the instrument rea...

Страница 25: ...oper 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 ...

Страница 26: ...18 CT 500 Instruction Manual Note Different thermometers have different immersion requirements Refer to the information included with your thermometer for specific instructions ...

Страница 27: ...1 5 of the top of the jar 4 Turn the instrument power ON and incrementally heat the bath to desired control temperature while monitoring the bath liquid level carefully The bath level must be 15 mm 20 mm approximately to from the top of the jar at the control temperature If it becomes apparent that this liquid level will not be achieved return the bath to within 10 C of ambient turn the instrument...

Страница 28: ... the CT 500 approximately 30 liters 7 gallons for the CT 518 approximately 38 liters 9 gallons for the CT 524 Make sure that the bath liquid is within 10 C of ambient temperature Then insert a tube into the bath chamber from the top opening and siphon the liquid from the bath into a container positioned lower than the bath Caution Always use a rubber bulb or similar device to apply suction to a tu...

Страница 29: ...erature Adjust Preheat Limit Control Provides power to the bath Permits quick setting of standard preset bath temperatures Permits the user to toggle between fixed and variable temperature control functions Activates an additional heater Adjusts the temperature parameters for safe bath operation Figure 16 CT 500 Front Panel In this manual the control areas will be abbreviated as follows Power P Te...

Страница 30: ...h Initially the Limit Control LC TEMPERATURE ADJUST dial must be turned completely clockwise to enable the bath to heat properly After the bath reaches operating temperature this dial should be reset to prevent the bath from overheating 3 Move the TA SELECT switch to the left fixed position 4 Release the dial lock on the TA FIXED dial and reset it to 5 5 Re lock the dial Setting the Temperature Th...

Страница 31: ...e TA FIXED dial 6 Read the thermometer to determine the actual temperature of the bath Make sure that both the bath temperature and thermometer have stabilized before taking a reading 7 Turn the TA FIXED dial to adjust the temperature After each adjustment allow several minutes for the bath temperature to stabilize 8 Turn the dial clockwise to increase the bath temperature or turn the dial counter...

Страница 32: ... the lock on the TA VARIABLEdial 2 Read the thermometer in the CT 500 bath to determine the actual temperature of the bath Make sure that both the thermometer and the bath temperature have stabilized before taking a reading 3 Turn the TA VARIABLE dial to adjust the temperature Turn the dial clockwise to increase the bath temperature Turn the dial counter clockwise to decrease the bath temperature ...

Страница 33: ...the T SELECT dial it may be possible to attain the temperature using the TA FIXED dial Because this dial has a finer adjustment than the TA VARIABLE dial the final temperature can be more easily obtained To try this alternative method follow the previous instructions using the TA FIXED dial instead of the TA VARIABLEdial ...

Страница 34: ...ilize at the desired temperature 2 Using a screwdriver slowly turn the Limit Control counter clockwise until the Limit Control OVER TEMP warning lights up Caution If the Limit Control fails to light up and the Limit Control has been adjusted counter clockwise to its furthest setting the unit may need repairs Contact CANNON for assistance 3 When the Limit Control OVER TEMP warning lights up turnthe...

Страница 35: ...lean the outside of the unit with a damp cloth moistened with water and or a mild detergent solution Caution Before cleaning the CT 500 turn off the instrument and unplug the power cord Do not clean the instrument unless bath temperature is within 10 C of ambient ...

Страница 36: ...The CT 600 thermoelectric cooling system is activated via the front panel On Off switch Thermoelectric cooling is generally recommended when maintaining a bath temperature within 20 C of ambient The thermoelectric system should be turned off whenever the bath temperature exceeds 50 C ...

Страница 37: ...ust be above existing bath temperature for heat to be applied Bath fluid level is too low Limit Control Temperature Adjust dial may be set too low Turn completely clockwise then press PUSH TO RESET button Bath control outside of specific limits Bath fluid viscosity may be too high if the fluid is too viscous at the desired temperature the stirring will be inadequate resulting in poor control Check...

Страница 38: ...3180 Probe assembly control All 25 3190 Probe assembly over temp All 27 2230 Lamp reset switch 12V All 27 3700 Screwdriver trimpot over temp adjust All 27 6121 Support pad sponge All 50 82 10 turn dial CT 500 20 1 12 x 12 Pyrex Jar CT 500 25 4005 Motor Stirrer Assembly 115V CT 500 25 4006 Motor Stirrer Assembly 230V CT 500 27 5250 Baffle white CT 518 20 1A 12 x 18 Pyrex Jar CT 518 CT 518 25 6010 I...

Страница 39: ...e to plant personnel equipment or products directly or indirectly resulting from the use or misuse of any product Representations and warranties made by any person including dealers and representatives of the Company which are inconsistent in conflict with or in excess of the terms of this warranty shall not be binding upon the Company unless placed in writing and approved by an officer of the Com...

Страница 40: ...39 High Tech Road State College PA 16803 USA Please include the following Required Information The Return Authorization number RA The name and telephone number of the person at your company to contact regarding the product Shipping and billing instructions for the return of the product to your location A detailed explanation of the reason for the return If the product is not covered by warranty th...

Страница 41: ...nt The motor shaft contains a flat area The coupling should be oriented so that the set screw is aligned with the flat The stirrer shaft and motor shaft should be inserted in approximately the same length in the coupling Users can test for shaft run out and impeller blade alignment by placing the motor on a soft surface with impeller facing up Connect the motor to the appropriate AC power source a...

Страница 42: ...nd grasp the shaft in the right hand Bend the shaft away from the line segment on the shaft 3 Repeat the test procedure marking the shaft at a location slightly removed from the first crayon mark 4 If the mark appears at the same side of a shaft as the first mark and is about the same length the bending was not great enough to alter the condition and should be repeated with more force applied Like...

Страница 43: ... establishing the temperature range over which the bath will be operated Refer to Table 3 for a list of operating temperature ranges and some liquids suitable for use in these ranges Table 6 Bath Fluid Options Temperature Range C Suitable Bath Liquids 100 C to 10 C Methyl Alcohol 10 C to 20 C Isopropyl Alcohol Low Viscosity Silicones 5 C to 60 C Water Low Viscosity Oils Silicones Dow 200 fluid 1 c...

Страница 44: ...r algae formation a degree of water treatment may be necessary Water can be used at temperatures close to the boiling point but water replenishment to offset evaporation becomes a nuisance and the hot vapor can make working above the bath uncomfortable Also it may be difficult to establish optimum control at elevated temperatures because of the rapid cooling resulting from surface evaporation Refi...

Страница 45: ...t 500 on the ten turn dial of range when at the control temperature Setting the Temperature Adjust FIXED dial at the midpoint ensures maximum adjustment in either direction to establish the desired temperature if additional adjustment is necessary If a temperature other than one that is available on the Temperature SELECT switch is to be accessed frequently it is possible to obtain this temperatur...

Страница 46: ...idpoint in order to obtain the desired temperature While the method described above permits altering the Temperature SELECT setting it may not be possible to obtain settings for temperatures that are widely different from those on the Temperature SELECT dial In this case use the Temperature Adjust VARIABLE dial to obtain the desired temperature ...

Страница 47: ...nce thermometer with a precision bridge should be used to determine the temperature of the bath Because many laboratories cannot justify the cost of such a thermometer Cannon Instrument Company recommends the use of a calibrated ASTM kinematic viscosity thermometer and can provide one if requested ASTMThermometers Each ASTM kinematic viscosity thermometer measures only 3 degrees on a scale subdivi...

Страница 48: ...m above the surface at ambient temperatures Viscosity Standards Cannon Instrument Company recommends that laboratories check their kinematic viscosity measurements with viscosity standards If the laboratory is using CANNON calibrated viscometers and has developed a good measuring technique kinematic viscosity determination using a standard will often point to temperature errors Viscosity standards...

Страница 49: ...CANNON INSTRUMENT COMPANY 2139 High Tech Road State College PA 16803 USA 800 676 6232 814 353 8000 Fax 814 353 8007 sales cannoninstrument com cannoninstrument com ...

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