GE CTR 80 Manuale Utente Pagina 1

GE KayeCTR –80Cold Temperature ReferenceUser’s Guide

Symbol DescriptionCanadian Standards AssociationOVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers tothe level of Impulse

•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,

•High voltage is used in the operation of this equipment. Severe injury ordeath may result if personnel fail to observe the safety precautions. Before

•DO NOT operate this instrument in an excessively wet, oily, dusty, ordirty environment.•The unit is a precision instrument. Although it has been desi

♦Voltage Cut In: ±7.5% (213 - 247 VAC)1.3 Customer Service InformationKaye Instruments can be contacted by writing to:World HeadquartersGE Kaye Instru

2 IntroductionThe Kaye CTR –80 is an ultra low temp bath useful in temperature calibrationand other applications requiring stable temperatures. An inn

3 Specifications and Environmental Conditions3.1 SpecificationsRange–80°C to 100°C(–112°F to 212°F)Ambient Operating Range15°C to 25°C(59°F to 77°F)St

•ambient relative humidity: 15–50%•pressure: 75kPa–106kPa•mains voltage within ±10% of nominal•vibrations in the calibration environment should be min

installed exchange part will solve the problem with minimal inconvenience andexpense.Factory repairs can frequently be completed on a fixed price basi

4 Quick StartCaution: READ SECTION 6 TITLED BATH USE before placing the bathin service. Incorrect handling can damage the bath and void the warranty.T

Rev. 371502World HeadquartersGE Kaye Instruments, Inc. • 101 Billerica Avenue, Building #7 • North Billerica, MA 01862 • USAtel 978-262-0005, 800-964-

Set up of the bath requires careful unpacking and placement of the bath, install-ing the drain valve, filling the bath with fluid, and connecting powe

When “SET” is pressed the display shows the set-point memory that is cur-rently being used and its value. Eight set-point memories are available.SAcce

5 InstallationCaution: READ SECTION 6 TITLED BATH USE before placing the bathin service. Incorrect handling can damage the bath and void the warranty.

Ensure the valve handle is in the closed position before attempting to add fluidto the tank.5.3.2Filling With FluidThe CTR –80 Bath is not provided wi

below the top. Carefully monitor the bath fluid level as the bath temperaturerises to prevent overflow or splashing. Cautiously, remove excess hot flu

6 Bath UseCaution: READ this section BEFORE PLACING THE BATH IN SERVICEThe information in this section is for general information only. It is not de-s

tion. The fluid in the bath allows different types of probes to be calibrated atthe same time. However, stem effect from different types of probes is

7 Parts and Controls7.1 Control PanelThe following controls and indicators are present on the controller front panel(see Figure 2 below): (1) the digi

4) The heater mode is a red light emitting diode (LED). This indicator letsthe user visually see the ratio of heating to cooling. When the indicatoris

1) The system fuses are 20 amp SB, 250V for 115 VAC operation and 10amp ST, 250 V for 230 VAC operation.2) The power cord is rated at 115 VAC, 20 amps

Table of Contents1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Symbols Used.

8 General Operation8.1 Bath FluidMany fluids work with the CTR –80 bath. Choosing a fluid requires consider-ation of many important characteristics of

8.1.4 Thermal ConductivityThermal conductivity measures how easily heat flows through the fluid. Ther-mal conductivity of the fluid affects the contro

flash point is the temperature at which there is sufficient vapor given off so thatwhen there is sufficient oxygen present and a ignition source is ap

8.1.10.3 Mineral OilMineral oil or paraffin oil is often used at moderate temperatures above therange of water. Mineral oil is relatively inexpensive.

8.1.11.1 Limitations and DisclaimerThe information given in this manual regarding fluids is intended only to beused as a general guide in choosing a f

policies regarding flash points, toxicity, and such issues must be considered.You are responsible for reading the (material safety data sheets) and ac

8.5.1 OperationThe bath controller automatically switches off cooling when the bath is oper-ated above 50°C to protect the system from extreme pressur

The bath is operable within the temperature range given in the specifications.For protection against solid-state relay failure or other circuit failur

9 Controller OperationThis section discusses in detail how to operate the bath temperature controllerusing the front control panel. Using the front pa

369 Controller OperationUPUPDOWN DOWNSETOperatingParametersMenuSETSETCalMenuALPHAAdj. R0DO NOT CHANGETHESE VALUES. SEE MANUALDO NOT CHANGETHESE VALUES

6.2 Comparison Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.3 Calibrat

To set the temperature one must first select the set-point memory. This functionis accessed from the temperature display function by pressing “SET”. T

Un= C Scale units currently selectedPress “UP” or “DOWN” to change the units.Un= F New units selected9.3 ScanThe scan rate can be set and enabled so t

Press “SET” to accept the new scan rate and continue.SAccept scan rate9.4 Secondary MenuFunctions which are used less often are accessed within the se

down. In this way the temperature is maintained at a fairly constanttemperature.The temperature stability of the bath and response time depend on the

9.7 CutoutAs a protection against software or hardware fault or user error, the bath isequipped with an adjustable cutout device that shuts off power

9.8 Controller ConfigurationThe controller has a number of configuration and operating options and calibra-tion parameters which are programmable via

LL Low Limit parameterPress “SET” to enable adjustment of LL.LL Flashes “ ” and then displays the settingL=-90 Current LL settingAdjust the LL paramet

9.10.1 Baud RateThe baud rate is the first parameter in the menu. The baud rate setting deter-mines the serial communications transmission rate.The ba

dUPLFlashes “dUPL” and then displays the settingd=FULLCurrent duplex mode settingThe mode may be changed using “UP” or “DOWN” and pressing “SET”.d=HAL

The calibration parameters R0, ALPHA, DELTA, and BETA characterize theresistance-temperature relationship of the platinum control sensor. These pa-ram

9.4 Secondary Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399.5 Heater

10 Digital Communication InterfaceThe CTR –80 Bath calibrator is capable of communicating with and being con-trolled by other equipment through the di

10.1.1 WiringThe serial communications ca-ble attaches to the calibratorthrough the DB-9 connector atthe back of the instrument. Fig-ure 5 shows the p

10.1.2.2 Sample PeriodThe sample period is the next parameter in the menu and prompted with“SPEr”. The sample period is the time period in seconds bet

5010 Digital Communication InterfaceCommand DescriptionCommandFormatCommandExample ReturnedReturnedExampleAcceptableValuesDisplay TemperatureRead curr

whether or not a value is sent with the command following a “=” character. Forexample “s”<CR> will return the current set-point and “s=150.0”<

11 Calibration Procedure11.1 Calibration ProcedureCalibration of this instrument should be performed at regularly scheduled inter-vals by qualified au

•Set the set-point to 50°C and allow adequate time for the bath to reachthis temperature and stabilize. Adjust the DELTA calibration parameter(seeSect

12 Maintenance•The calibration instrument has been designed with the utmost care. Easeof operation and simplicity of maintenance have been a central t

tomer Service to be sure that the proposed method will not damage theequipment.•The condensing coil should be cleaned regularly. Inspect the coil thro

13 Trouble ShootingIf problems arise while operating the CTR –80, this section provides some sug-gestions that may help you solve the problem. A wirin

13.3 Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59iv

•If a High/Low voltage condition exists for longer than 5 seconds, thecompressor will be de-energized. The controller display will flash “LoLinE“ o an

13.3 Wiring Diagram5913 Trouble Shooting799 East Utah Valley DriveAmerican Fork, Utah 84003(801) 763-1600ProbeTCTriacACREDREDWHTWHTSHLD+-HNMT2GMT1J7J8

vFiguresFigure 1 Drain Valve Installation—IMPORTANT: Do Not Over Tighten.Follow the installation instructions above. . . . . . . . . . . .

viTablesTable 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Before You Start1.1 Symbols UsedTable 1 lists the International Electrical Symbols. Some or all of these symbolsmay be used on the instrument or in