Instruction/ maintenance manual of the product CTR 80 GE
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GE Kaye CTR –80 Cold T emper atur e Ref er ence User’ s Guide.
Rev. 371502 World Headquarters GE Kaye Instruments, Inc. • 101 Billerica Avenue, Building #7 • North Billerica, MA 01862 • USA tel 978-262-0005, 800-964-5293 (US & Canada) • fax 978-439-8181 • email kaye@ge.
T able of Contents 1 Before Y ou Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Safety Information . . . . . . . . . .
6.2 Comparison Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.3 Calibration of Multiple P robes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7 P arts and Controls . . . . . . . . . . .
9.4 Secondary Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 9.5 Heater P ower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 9.6 Proportional Band . . . . . . . . . . . .
13.3 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 iv.
v Figures Figure 1 Drain V alve Installation—IMPORT ANT : Do Not Over Tighten. Follow the installation instructions above. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 2 CTR-80 Control P anel . . . . . . . . . . . . . . . . . . .
vi T ables T able 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 T able 2 T able of V arious Bath Fluids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 T able 3 Controller Communications Commands .
1 Before Y ou Start 1.1 Symbols Used T able 1 lists t he International Electrical Symbol s. Some or all of these symbols may be used on the instrument or in this manu al.
Symbol Description Canadian Standards Association OVERVOL T AGE (Installation) CA TEGORY II, P ollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand V oltage protection provided. Equipment of OVERVOL TAGE CATEGORY II is energy- consuming equipment to be supplied from the fixed installation.
• If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. • Before initial use, or after transport, or after storage in h.
• High voltage is used in the operation of this equipment. Severe injury or death may result if personnel fail to observe the safety precautions. Before working inside the equipment, turn off the power and disconnect the power cord. B A TH FLUIDS • Fluids used in this unit may produce noxious or toxic fumes under certain circumstances.
• DO NO T operate this instrument in an excessi vely wet, oily , dusty , or dirty en vironment. • The unit is a precision instrument. Although it has been designed for opti - mum durability and trouble free operation, it must be handled with care.
♦ V oltage Cut In: ±7.5% (213 - 247 V AC) 1.3 Customer Service Information Kaye Instruments can be contacted by writin g to: W orld Headquarters GE Kaye Instruments, Inc. 101 Billerica A venue, Building 7 North Billerica, MA 01862 tel. +1 (978) 262 0005 fax +1 (978) 439 8181 e-mail kaye@ge.
2 Introduction The Kaye CTR –80 is an ultra low temp bath useful in temperature calibration and other applications requiri ng stable temperatures. An innov ati v e state of the art solid-state temperature con troller has been incorporated which maintains the bath temperature with extreme stability .
3 Specifications and Environmental Conditions 3.1 Specifications Range –80°C to 100°C (–112°F to 212°F) Ambient Operating Range 15°C to 25°C (59°F to 77°F) Stability ±0.006°C at –80°C (ethanol) ±0.010°C at 0°C (ethanol) ±0.010°C at 100°C (oil) Uniformity ±0.
• ambient relati ve humidity: 15–50% • pressure: 75kPa–106kPa • mains voltage within ±10% of nominal • vibrations in the calibration en vironment should be minimized • altitude less than 2,000 meters 3.3 Hardware W arranty and Assistance 3.
installed e xchange part will solv e the problem with mini mal incon v enience and expense. Factory repairs can frequently be completed on a f ix ed price basis. A base ser - vice fee plus labor and materials will be char ged in lieu of the f ixed repair price upon customer request or if e xtensi ve repairs are required.
4 Quick Start Caution: READ SECTION 6 TITLED BA TH USE befor e placing the bath in service. Incorr ect handling can dama ge the bath and void the warranty .
Set up of the bath requires careful unpacking and placement of t he bath, install - ing the drain v alve, f illing the bath with fluid, and connecting po wer . Consult Section 5 for detailed instru ctions for prop er installation of the bath. Be su re to place the bath in a safe, clean and le vel location.
When “SET” is pressed the displ ay shows the set-point memory that is cur - rently being used and its value. Eight set-point memories are av ailable. S Access set-point selection 1. 25.0 Set-point 1, 25.0°C currently used Press “SET” to select this memory and access the set-point va lue.
5 Installation Caution: READ SECTION 6 TITLED BA TH USE befor e placing the bath in service. Incorr ect handling can dama ge the bath and void the warranty . 5.1 Bath Environment The CTR –80 Bath i s a precision instrument whic h should be located in an ap - propriate en vironment.
Ensure the valve handle is in the closed position befo re attempting to add fluid to the tank. 5.3.2 Filling With Fluid The CTR –80 Bath is not provided with a fluid.
belo w the top. Carefull y monitor the bath fluid l e vel as t he bath temperature rises to prev ent ov erflo w or splashing. Cautiously , r emove excess hot fluid if necessary . 5.4 P ower W ith the bath power switch off, plug the bath into an A C mains outlet of the appropriate v oltage, frequenc y , and current capacity .
6 Bath Use Caution: READ this section BEFORE PLACING THE B A TH IN SERVICE The information in t his section is for general information only . It is not de - signed to be the basis for cal ibration laboratory procedures. Each laboratory will need to write their o wn specific procedures.
tion. The fluid in the bath allows different types of probes to be calibrated at the same time. Howe v er , stem ef fect from different types of probes is not to - tally elimi nated. Even t hough all baths ha ve hori zontal and v ertical gradients, these gradients are minimized inside the b ath work area.
7 P arts and Controls 7.1 Control P anel The follo wing controls and indicators are present on the cont roller front panel (see Figure 2 belo w): (1) the digital LED display , (2) the control buttons, (3) the on/of f po wer switch, (4) the heat er mode light, and (5) the cooling on/of f switch.
4) The heater mode is a red light emitting diode (LED). This indicator lets the user visually see the ratio of heating to cooling. When the indicator is lit the heater is on, and when it is off the heater is off and the bath is cooling. 5) The cooling switch turns on the refrigeration for control belo w 50°C and rapid cool down.
1) The system fuses are 20 amp SB, 250V for 115 V A C operation and 10 amp ST , 250 V for 230 V A C operation. 2) The power cord is rated at 115 V A C, 20 amps. (230 V A C, 10 amps op- tional.) 3) A drain plug is provided for ease of removing the fluid media from the bath.
8 General Operation 8.1 Bath Fluid Many fl uids work wit h the CTR –80 bath. Choosi ng a fluid requires consi der - ation of many important characteristics of the fluid. Among these are tempera - ture range, viscosity , specif ic heat, thermal conducti vity , thermal expansion, electrical resisti vity , fluid lifetime, safety , and cost.
8.1.4 Thermal Conductivity Thermal conducti vity measures ho w easily heat flo ws through the fluid. Ther - mal conducti vity of the fluid af fects the control stability , temperature unifor - mity , and probe temperature settling time. Fluids with higher conducti vity distrib ute heat more quickl y and ev enly impro ving bath performance.
flash point is t he temperature at which t here is suf fic ient v apor gi ve n off so that when there is suf ficient oxygen present and a ignition source is applied t he va - por will ignite. This does not necessarily mean that f ire will be sustained at the flash point.
8.1.10.3 Mineral Oil Mineral oil or paraf fin oil is often used at moderate temperatures abo ve the range of water . Mineral oil is relativ ely inexpensiv e. At lower temperatures mineral oil is quite viscous and control may be poor . At higher temperatures vapor emi ssion becomes signifi cant.
8.1.11.1 Limitations and Disclaimer The information gi v en in this manual re garding fl uids is intended onl y to be used as a general guide in choosi ng a fluid. Though e very e ffort has been made to provide correct information we cannot guarantee accurac y of data or assure suitability of a flu id for a particular ap plication.
policies re garding flash poi nts, toxicity , and such issues must be considered. Y ou are responsible for reading the (material safety data sheet s) and acting accordingly . 8.2 Stirring Stirring of the bath fluid is very important for stable temperature control.
8.5.1 Operation The bath controller a utomatically swit ches off cooling when the bath i s oper - ated abov e 50°C to protect the system fro m extreme pressures.
The bath is operable within the temperature range gi v en in the specif ications. For protection against solid-state relay failure or o ther circuit failure, a thermo - couple cutout automaticall y turns off the heater an ytime the bath temperature exceeds the maximum temperature.
9 Controller Operation This section discusses in detail how to operate the bath temperature controller using the front control panel. Using the front panel ke y-switches and LED dis - play the user ma.
36 9 Controller Operation UP UP DOWN DO WN SET Operating Parameter s Menu SET SET Cal Menu ALPHA Adj. R0 DO NOT CHANGE THESE V ALUES. SEE MANUAL DO NOT CHANGE THESE V ALUES. SEE MANUAL Serial Interface Menu BAUD Rate Adjust BA UD Rate Sample Period Adj.
T o set the temperature one must f irst select the set-point memory . This function is accessed from the temperature display function by pressing “SET”. The number of the set-point memory current ly being used is sho wn at the left on the display follo wed by the current set-point v alue.
Un= C Scale units curr ently selected Press “UP” or “DO WN” to change the unit s. Un= F Ne w units selected 9.3 Scan The scan rate can be set and enabl ed so that when the set-poi nt is changed the bath heats or cools at a specified rate (de grees per minute) until it reaches the ne w set-point.
Press “SET” to accept the ne w scan rate and continue. S Accept scan rate 9.4 Secondary Menu Functions which are used less often are accessed within the secondary menu. The secondary menu is accessed by pressing “SET” and “EXIT” simulta - neously and then releasing.
down. In this way the temperature is maintained at a fairly constant temperature. The temperature stability of the bath and response time depend on the width of the proportional band. If the band is too wide the temperat ure will de viate e x - cessi vely from the set-point due to v arying e xternal conditions.
9.7 Cutout As a protection against software or hardware f ault or user error , the bath is equipped with an adjustable cut out de vice that shuts of f po wer to the heat er if the temperature exceeds a set v alue. This p rotects the instrument, probes, and fluid from excessi ve temperatures.
9.8 Controller Configuration The controller has a number of conf iguration and operati ng options and calibra - tion parameters which are programmable via the front panel. These are ac - cessed from the secondary menu after the proportional band functi on by pressing “SET”.
LL Low Limit parameter Press “SET” to enable adjustment of LL. LL Flashes “ ” and then displays the setting L=-90 Curr ent LL setting Adjust the LL parameter using “UP” or “DOWN”. L=-20 New LL setting Press “SET” to accept the ne w temperature limit.
9.10.1 Baud Rate The baud rate is the first parameter in the menu . The baud rate s etting deter - mines the serial communicati ons transmission rate. The baud rate parameter is indicated by , bAUd Fl.
dUPL Flashes “dUPL” and then displays the setting d=FULL Curr ent duplex mode setting The mode may be changed using “UP” or “DOWN” and pressing “SET”. d=HALF New duple x mode setting 9.10.4 Linefeed The final parameter in the serial interface menu is the linefeed mode.
The calibration parameters R 0 , ALPHA, DEL T A, and BET A characterize the resistance-temperature relationship o f the platinum control sensor . These pa - rameters may be adjusted by an experienced user to impro v e the accuracy of the bath. 9.11.1 Hard Cutout This parameter is the temperat ure abov e which the unit shuts do wn automati - cally .
10 Digital Communication Interface The CTR –80 Bath calibrator is capable of communicating with and being con - trolled by other equipment thr ough the digital serial interface. W ith a digita l interface the inst rument may be connected to a computer or other equipment.
10.1.1 Wiring The serial communications ca - ble attaches to the calibrato r through the DB-9 connector at the back of th e instrument. Fig - ure 5 shows the pi n-out of this connector and suggested cable wiring. T o eliminate no ise the serial cable should be shielded with low resistance between the connector (DB-9) and the shield.
10.1.2.2 Sample P eriod The sample period is t he next parameter in the menu and prompted with “ SPEr ”. The sample period is the time period in seconds between temperature measurements transmitted from the seri al interface.
50 10 Digital Communication Interface Command Description Command Format Command Example Returned Returned Example Acceptable Values Display Temperature Read current set-point s[etpoint] s set: 999.99 {C or F} set: 90.00 C Set current set-point to n s[etpoint]=n s=80.
whether or not a value i s sent with the command follo wing a “=” character . For example “s”<C R> will return the curre nt set-poi nt and “s=150.0”<CR> will set the set-point t o 150.0 degrees. In the following list of commands, characters or data within brackets, “[” and “]”, are optional for the command.
11 Calibration P rocedure 11.1 Calibration P rocedure Calibration of thi s instrument should be performed at re gularly schedul ed inter - vals by qualified authorized personnel in accordance with your compan y’ s pol - icy . F ollowing is the recommended procedu re for calibrating this instrumen t.
• Set the set-point to 50°C and allow adequate time for the bath to reach this temperature and stabilize. Adjust the DEL T A calibration parameter (see Section 9.11.4) to make the bath temperature as measured with the standard thermometer match the set-point.
12 Maintenance • The calibration instrument has been designed with the utmost care. Ease of operation and simplicity of maintenance have been a central theme in the product development. Therefore, with proper care the instrument should require very little maintenance.
tomer Service to be sure that the proposed method will not damage the equipment. • The condensing coil should be cleaned regularly . Inspect the coil through the vented rear panel. If any dust or dirt accumulation is visible, remove the rear panel to clean out the dust or dirt.
13 T rouble Shooting If problems arise while operati ng the CTR –80, this section pro vides some sug - gestions that may help you sol ve the problem. A wiring di agram is also included. 13.1 T roubleshooting Belo w are se veral situations that may arise fol lowed by suggest ed actions to take for f ixing the problem.
• If a High/Low voltage condition exists for longer than 5 seconds, the compressor will be de-energized. The controller display will flash “Lo LinE“ o and off while the condition exists. • Re-energization is automatic upon correction of the fault condition and af - ter a delay cycle of about 2 minutes.
13.3 Wiring Diagram 59 13 Trouble Shooting 799 East Utah Valley Drive American Fork, Utah 84003 (801) 763-1600 Probe TC Triac AC RED RED WHT WHT SHLD + - H N MT2 G MT1 J7 J8 J3 J9 J1 1 2 3 4 5 POWER S.
An important point after buying a device GE CTR 80 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought GE CTR 80 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data GE CTR 80 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, GE CTR 80 you will learn all the available features of the product, as well as information on its operation. The information that you get GE CTR 80 will certainly help you make a decision on the purchase.
If you already are a holder of GE CTR 80, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime GE CTR 80.
However, one of the most important roles played by the user manual is to help in solving problems with GE CTR 80. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device GE CTR 80 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
