LTR-XX-140 Users Guide.vp - SiSW >> Science Instruments and
Contents
1. 7 3 7 3 1 7 Controller Operation When the cutout is active and the cutout mode is set to manual ESEE the display flashes cut o ut until the user resets the cutout To access the reset cutout function press the SET button SET Access cutout reset function The display indicates the reset function rESEE P Cutout reset function Press SET once more to reset the cutout SET Reset cutout This switches the display to the set temperature function To return to display ing the temperature press the EXIT button If the cutout is still in the over temperature fault condition the display continues to flash cutout The well temperature must drop a few degrees below the cutout set point before the cutout can be reset Temperature Set point The temperature set point can be set to any value within the range and with res olution as given in the specifications Be careful not to exceed the safe upper temperature limit of any device inserted into the well The safety cutout must be adjusted to prevent this occurrence Setting the temperature involves two steps 1 selecting the set point memory and 2 adjusting the set point value Programmable Set points Set point Memory The controller stores 8 set point temperatures in memory The set points can be quickly recalled to conveniently set the calibrator to a previously programmed temperature s2. 43 10 2 Comments ie RE SR ERR IR 44 10 2 1 EMC Directive 44 10 2 2 Low Voltage Directive Safety 44 10 3 WiringDiagrams ee IRI 45 Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 LTR 40 140 Back 15 25 140 Back 16 17 Temperature 18 Controller Function Flowchart 24 Well Temperature Fluctuation at Various Proportional Band 31 LTR 225 140 Wiring 45 LTR 40 140 Wiring 46 Tables Table 1 Table 2 Table 3 International Specifications Electrical Transfer Calibration Accuracy 1 Before You Start Before You Start Symbols Used Table 1 lists the symbols used on the instrument or in this manual and the meaning of each symbol Table International Electrical Symbols Symbol Description AC Alternating Current AS AC DC Battery MA O gt gt l Complies with European Union directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Haza
3. 29 7 7 Heating POWer hana dh ea obese 29 7 8 30 LIN GHOU nde p bi 32 7 10 Controller 33 7 10 1 Probe Parameters 33 7101A 33 71012 ALPHA EC 33 71013 DELTA 9 RR eR 33 11014 ECC 34 7 10 2 Operating Parameters 34 71021 Temperature Scale 34 71022 Cutout Reset Moda en eave 34 7 10 3 Serial Interface Parameters 35 11031 atre HE nach eae ole cs 35 110 3 2 Sample Period is estin GRE 35 710 33 Duplex 35 ooo aree enne d PEE A E e Fa 36 7 104 Calibration Parameters 36 71041 CIO gece wate mde y m y are eR RW 37 71042 BOandBG e 37 71043 SQ xe ee ex 37 8 39 8 1 Calibration Procedure 39 8 1 1 Calibration Equipment 39 8 1 2 Calibration 39 9 Maintenance 10 Troubleshooting 43 10 1 Troubleshooting
4. Display gt gt SET Temperature wv EXIT lt Program Menu SET EXIT Number of Setpoints Select Setpoi Y Select Setpoint s Selec Setpoint T Y BT SECONDARY FUNCTIONS Adjust Setpoint LOL ST Soak Time Y SET I X Display P BT 2 2 2 Program Function Mode SET 1 Y EXIT IY Set Proportional Band Y EXIT 2 SET EXIT Program Control SET Set Cutout Temp I SET v a Configuration Menu SET EXIT EXIT EXIT r3 wl Operating Serial Calibration DOWN Parameters DOWN Interface DOWN Menu Menu pas Menu SET EXT SET EXIT SET EXIT Cutout Dupl Cam 4 J gt eT Adj Cutout Reset Mode Adj Duplex Mode SETJEUT SETIEXTT Linefeed lt EJ um Adjust Linefeed SET EXIT DO NOT CHANGE THESE VALUES SEE MANUAL DO NOT CHANGE THESE VALUES SEE MANUAL
5. 13 LETS 13 A3 Eq 13 44 14 5 5 15 51 8 15 52 Front 17 5 3 Constant Temperature Block 18 5 31 Constant Temperature Block 18 6 19 61 ee 19 6 2 Switching Voltage Operation 19 6 21 LTR 25 140 19 622 LTR 40 140 19 63 Setting the 20 64 Calibrating 5 20 7 23 7 23 72 Reset o wr na Ee aad eke 23 7 3 Temperature 25 731 Programmable Set points Set point Memory 25 732 Set point Value 26 74 Set point Resistance 26 7 5 Ramp and Soak Program 26 751 Number of Program Set points 27 752 Set points 27 753 Program Soak Time 28 754 Program Function Mode 28 755 Program Control 29 76
6. D L p D fw S VJ 1HM REM rk OVEN ILHAM AHO 1 JBALHM 3 z g8 9uO 1HM i Oe Wes a 59660 12 0 ar mA EOM 2 NYO p ov C TBABHS HM 1HWANO S 1 TvLIOIG 3aunivsadWwal aay AV1dSIG 5 SOVHMHLNI iL Figure 7 LTR 25 140 Wiring Diagram 10 Troubleshooting L NN no OZPLELZD EN 0 1 06 14 NDSSIS NDS8IM 92 AVUIdSIU OL aayo 1711910 Ie ADST Add NS YMd OIA LHM 0000000 o 9 0 9 c SIN MOST N9 YOLISZNNOI JJI Figure 8 LTR 40 140 Wiring Diagram
7. A002 100V 300W sw oo POWER 50 60 Hz N Figure 2 LTR 25 140 Back Panel 5 2 5 Parts and Controls Serial Port This D 9 connector is for interfacing the calibrator to a computer or terminal with serial RS 232 communications Fuse Holders LTR 25 140 At the rear of the calibrator are two user accessable fuse holders Front Panel See Figure 3 on page 17 Controller Display The digital display is an important part of the temperature controller because it not only displays set and actual temperatures but also vari ous calibrator functions settings and constants The display shows tempera tures in units according to the selected scale C or F Controller Keypad The four button keypad allows easy setting of the set point temperature The control buttons SET DOWN UP and EXIT are used to set the calibrator temperature set point access and set other operating parameters and access and set calibration parameters Setting the control temperature is done directly in degrees of the current scale It can be set to one hundredth of a degree Celsius The functions of the buttons are as follows SET Used to display the next parameter in the menu and to set parameters to the displayed value DOWN Used to decrement the displayed value of parameters UP Used to increment the displayed value EXIT Used to exit from a menu When EXIT is pressed any changes made to the d
8. ment Power bumps from brown outs could damage the instrument Wait until the power has stabilized before re energizing the instrument 1 3 1 Before You Start Customer Service Information GE Kaye Instruments can be contacted by writing to World Headquarters GE Kaye Instruments Inc 101 Billerica Avenue Building 7 North Billerica MA 01862 tel 1 978 262 0005 fax 1 978 439 8181 e mail kaye indsys ge com European Headquarters GE Kaye Instruments GmbH Sinsheimer Strasse 6 D 75179 Pforzheim Germany tel 49 0 723 1 14335 0 fax 49 0 7231 14335 29 e mail info kaye europe com rvi kaye europe com When contacting GE Kaye Instruments Customer Service please have the fol lowing information available Model Number e Serial Number Voltage 2 Introduction Introduction The GE Kaye Low Temperature References LTR 25 140 and LTR 40 140 provide a stable portable temperature reference for performing thermocouple calibration The LTR 25 140 operates over the range of 25 C to 140 C The LTR 40 140 operates over the range of 40 to 140 C The LTR is most commonly used with GE Kaye s Intelligent RTD IRTD probe and Validator 2000 to make up a complete validation system The LTR has the ability to rapidly heat and cool making it an ideal instrument for per forming multiple point calibrations for a variety of processes such as freeze dryer cold rooms incubators and st
9. Gently insert the thermocouple probe sleeves into the well Sleeves of various sizes are available from the manufacturer The well must be clear of any foreign objects dirt and grit before the sleeve is inserted The sleeve is inserted with the two small tong holes positioned upward Turn on the power to the calibrator by toggling the switch at the rear of the in strument to the I on position The fan begins circulating air through the in strument After a brief self test the controller should begin normal operation showing the well temperature The block will heat or cool until it reaches the programmed set point Switching Voltage Operation LTR 25 140 The LTR 25 140 has the ability to operate at one of four line voltages 100 range of 92 to 121 120 range of 110 to 132 200 range of 184 to 242 or 230 range of 210 to 264 Ranges are for both 50 and 60Hz operation To change the mains voltage on the LTR 25 140 perform the following steps 1 With a Phillips head screwdriver remove the two 2 screws on the line voltage cover plate 2 Set the line voltage as per the following table Nominal Voltage Line Voltage Left Switch Right Switch 100 100 Up Down 110 120 115 Up Up 200 200 Down Down 220 230 240 230 Down Up 3 Replace the line voltage cover plate LTR 40 140 To change the mains voltage on the instrument perform the following steps 6 1 Unplug the unit fro
10. appropriate decontamination steps as outlined by the national safety council with respect to the material e Ifthe mains supply cord becomes damaged replace it with a cord with the appropriate gauge wire for the current of the instrument If there are any questions call Customer Service for more information e Before using any cleaning or decontamination method except those rec ommended by GE Kaye Instruments users should check with GE Kaye Instruments Customer Service to be sure that the proposed method will not damage the equipment e Ifthe instrument is used in a manner not in accordance with the equip ment design the operation of the dry well may be impaired or safety haz ards may arise e The over temperature cut out should be checked every 6 months to see that it is working properly In order to check the user selected cut out fol 9 low the controller directions Section 7 2 for setting the cut out Both the manual and the auto reset option of the cut out should be checked Set the instrument temperature higher than the cut out Check to see if the display flashes cut out and the temperature is decreasing e Keep the heat sink fins and fan guard clear of dust 10 10 1 10 Troubleshooting Troubleshooting Troubleshooting In the event that the dry well appears to function abnormally this section may help to find and solve the problem Several possible problem conditions are de scribed a
11. calibrate the instrument and is not adjustable 7 5 Ramp and Soak Program Menu The ramp and soak program feature allows the user to program a number of set points and have the dry well automatically cycle between the temperatures holding at each for a determined length of time The user can select one of four different cycle functions The program parameter menu is accessed by pressing SET and then UP 7 5 1 7 5 2 7 Controller Operation Press SET to enter the program menu SET Enter program menu Number of Program Set points The first parameter in the program menu 15 the number of set points to cycle through Up to 8 set points can be used in a ramp and soak program Press SET to continue Pressing EXIT will cause any changes made to the parameter to be ignored SET Save new setting Set points The next parameters are the program set points 125 0 First set point 7 Controller Operation Press SET to save the new set point value The other set points can also be set in the same manner Once the set points are programmed as desired press EXIT to continue 10 7 5 3 Program Soak Time The next parameter in the program menu is the soak time This is the time in minutes that each of the program set points is maintained after settling before proceeding to the next set point The duration is counted from the t
12. instrument memory see Section 7 10 1 Probe Parameters and any other applicable configuration parameters Allow the instrument to stabilize and verify the accuracy of the temperature reading Blank display after mains Blown fuse A fuse may have blown due to a power surge or failure of a compo power applied nent Replace the fuse once If the fuse blows a second time it is likely caused by the failure of a component Always replace the fuse with one of the same rating volt age and type Never replace the fuse with one of a higher current rating The display shows Sensor is disconnected or shorted Please contact GE Kaye Instruments Cus 273 C or 459 F tomer Service for further instructions The display shows Software cut out is set to low Check the cutout setting in the Set point menu cut out 10 Troubleshooting 10 2 10 2 1 10 2 2 Problem Possible Causes and Solutions Temperature readout is Calibration may be needed or interference from emitting RF energy When not the actual temperature the instrument is stable rotate the instrument slowly If the display does not of the well change the instrument may need to be calibrated Contact GE Kaye Instruments Customer Service If the display changes more than twice the normal display devia tion another instrument in the area could be emitting RF energy Move the instru ment to a different location and rotate again If the temperature is correct in the ne
13. neously and then releasing The first function in the secondary menu is the heater power display Heating Power The temperature controller controls the temperature of the well by heating or cooling the well with the thermoelectric modules The amount of heating or cooling power depends on the temperature set point of the well This heating or cooling power value may be estimated by watching the red green control indicator light or read directly from the digital display By knowing the amount of heating the user can tell if the calibrator is heating up to the set point cool ing down or controlling at a constant temperature Monitoring the percent heater power allows the user to determine the stability of the well temperature With good control stability the percent heating power should not fluctuate more than 1 within one minute 7 Controller Operation The heater power display is accessed in the secondary menu Press SET and EXIT simultaneously and release The heater power is displayed as a percent age of full power Negative numbers indicate the well is being cooled 100 means the well is being cooled at maximum power 0 means the well requires neither heating nor cooling 100 means the well is being heated at maximum power To exit out of the secondary menu press EXIT To continue on to the propor tional band setting function press SET 7 8 In proportional contr
14. pa rameter enables on or disables off transmission of a linefeed character LF ASCII 10 after transmission of any carriage return The linefeed parameter is indicated by 7 10 4 Calibration Parameters The user has access to a number of the instrument calibration constants namely CTO BO and BG These values are set at the factory and must not be altered The correct values are important to the accuracy and proper and safe operation of the calibrator Access to these parameters is available to the user only so that in the event that the controller s memory fails the user may restore these values to the factory settings The user should have a list of these constants and their settings with the manual A Caution DO NOT change the values of the calibration constants from the factory set values The correct setting of these parameters is important to the safety and proper operation of the calibrator The calibration parameters menu is indicated by CAL i Calibration parameters menu 7 10 4 1 7 10 4 2 7 10 4 3 7 Controller Operation Press SET five times to enter the menu Parameter CTO sets the calibration of the over temperature cutout This is not adjustable by software but is adjusted with an internal potentiometer This pa rameter should read between 150 and 170 BO and BG These parameters calibrate the accuracy of the temperature set point These are programmed at the factory when the instrumen
15. point to 100 C and allow adequate time for the block to reach this temperature and stabilize Adjust the ALPHA calibration pa rameter see Section 7 10 1 2 to make the block temperature as mea sured with the standard thermometer match the set point The approximate ratio between a change in ALPHA and a change in tem perature at 100 C is about 0 00004 to 1 For example if the block tem perature is high by 0 1 C at 100 C then decrease ALPHA by 0 000004 Set the set point to 140 C and allow adequate time for the block to reach this temperature and stabilize Adjust the DELTA calibration pa rameter see Section 7 10 1 3 to make the block temperature as mea sured with the standard thermometer match the set point The approximate ratio between a change in DELTA and a change in temper ature at 140 C is about 1 7 to 1 For example if the block temperature is high by 0 1 C at 50 C then increase DELTA by 0 17 Set the set point to the lowest temperature and allow adequate time for the block to reach this temperature and stabilize Adjust the BETA cali bration parameter see Section 7 10 1 4 to make the block temperature as measured with the standard thermometer match the set point The approximate ratio between a change in BETA and a change in tempera ture at 25 C is about 50 to 1 For example if the block temperature is high by 0 1 C at 25 C then increase BETA by 5 0 Repeat Step 1 to ensure the instrument is now accurate th
16. reach temperatures greater that 100 C for high temperature 140 C and higher dry wells Note Probes and inserts may be hot and should only be inserted and removed from the instrument when the instrument is set at temperatures less than 50 C Use extreme care when removing hot inserts e DONOT turn off the instrument at temperatures higher than 100 C This could create a hazardous situation Select a set point less than 100 C and allow the instrument to cool before turning it off 1 Before You Start DO NOT operate this instrument without a properly grounded properly polar ized power cord DO NOT connect this instrument to a non grounded non polarized outlet DO NOT use this instrument in environments other than those listed in the User s Guide Follow all safety guidelines listed in the user s manual Calibration Equipment should only be used by Trained Personnel Before initial use after transport and any time the dry well has not been ener gized for more than 10 days the instrument needs to be energized for a dry out period of 1 2 hours before it can be assumed to meet all of the safety requirements of IEC 1010 1 Always replace the power cord with an approved cord of the correct rating and type HIGH VOLTAGE is used in the operation of this equipment SEVERE IN JURY or DEATH may result if personnel fail to observe safety precautions Before working inside the equipment turn power off and disconnect power
17. technical assistance for installation or program development Contact the Cus tomer Service Department for details Customer Site Assistance Kaye can provide optional onsite assistance with installation initial operation and training of plant personnel Contact the Customer Service Department for details 4 1 4 2 4 3 4 Quick Start Quick Start Unpacking Unpack the dry well carefully and inspect it for any damage that may have oc curred during shipment If there is shipping damage notify the carrier immediately Verify that the following components are present LTR 25 140 or LTR 40 140 e Thermocouple Insert GE Kaye Part number J6520 6 ea Power Cord e User s Guide e Certificate of Calibration e Serial Cable Set up Place the calibrator on a flat surface with at least 10 inches of free space around the instrument Overhead clearance is required DO NOT place under a flammable structure or cabinet Plug the power cord into a grounded mains out let Observe that the nominal voltage corresponds to that indicated on the back of the calibrator Turn on the power to the calibrator by toggling the switch on the power entry module The fan should begin blowing air through the instrument and the con troller display should illuminate after 3 seconds After a brief self test the con troller should begin normal operation If the unit fails to operate please check the power connection The display begins to sh
18. to a 40 degree environment it should be allowed to run for 45 minutes be fore use Place the thermocouples and IRTD into the LTR making sure to use the well inserts for the insert the thermocouples The LTR provides the stable temperature required for sensor calibration The IRTD a self contained precision measurement standard that provides data directly to the Validator 2000 accurately measures the temperature of the LTR The IRTD provides a traceable standard that is used to correct the temperature readings of your thermocouples For more detailed information on the hardware connections and the sensor cali bration process refer to the Validator 2000 User s Guide 7 1 7 2 7 Controller Operation Controller Operation This chapter discusses in detail how to operate the dry well temperature con troller using the front panel Using the front panel key switches and LED dis play the user may monitor the well temperature set the temperature set point in degrees C or F monitor the heater output power adjust the controller propor tional band set the cutout set point and program the probe calibration parame ters operating parameters serial interface configuration and controller calibration parameters Operation of the functions are summarized in Figure 5 on page 24 In the following discussion a solid box around the word SET UP EXIT or DOWN indicates the panel button while the dotted box indicates the display readi
19. GE Kaye LTR 25 140 LTR 40 140 World Headquarters GE Kaye Instruments 101 Billerica Avenue Building 7 North Billerica MA 01862 USA tel 978 262 0005 800 964 5293 US amp Canada fax 978 439 8181 email kaye indsys ge com European Headquaters GE Kaye Instruments GmbH Sinsheimer Strasse D 75179 Pforzheim Germany tel 49 0 7231 14335 0 fox 49 0 7231 14335 29 email info kaye europe com www kayeinstruments com Subject to change without notice Copyright 2002 Printed in USA Rev 282601 Table of Contents 1 Before You uu iu eae Aa ew A 1 Vel Symbols 1 1 2 Safety 2 121 Warnings 2 122 Cautions 4 1 3 Customer Service 5 2 7 3 Specifications and Environmental 5 9 3 1 Specifications iiu meme Oe Pe Ee eee 9 32 Environmental 10 3 3 Hardware Warranty and Assistance 1 ununa aaa 10 3 3 1 Instrument Warranty 10 3 3 7 In Warranty Repairs 333 After Warranty Repairs 3 34 Equipment Maintenance Agreements 3 3 5 Customer Support 1 3 3 6 Customer Support Agreement 12 3 3 7 Customer Site Assistance 12 4 Quick Staro ea oe eee ee wae eae 13 41
20. PAr Operating parameters menu Press UP to enter the menu The operating parameters menu contains the units scale selection set and cutout reset mode setting 7 10 2 1 Temperature Scale Units The temperature scale units of the controller may be set by the user to degrees Celsius C or Fahrenheit F The units are used in displaying the well tem perature set point proportional band and cutout set point The temperature scale units selection is the first function in the operating pa rameters menu Press SET to accept the new selection and resume displaying the well temperature 7 10 2 2 Cutout Reset Mode The cutout reset mode determines whether the cutout resets automatically when the well temperature drops to a safe value or must be manually reset by the operator The parameter is indicated by Ceor Skt Cutout reset mode parameter Press SET to access the parameter setting Normally the cutout is set for au tomatic mode tto zHuto Cutout set for automatic reset To change to manual reset mode press UP and then SET 7 10 3 7 10 3 1 7 10 3 2 7 10 3 3 7 Controller Operation Sk i Cutout set for manual reset Serial Interface Parameters The serial RS 232 interface parameters menu is indicated by SErIRL Serial RS 232 interface parameters menu The serial interface parameters menu contains parameters which determine the operation of the serial interface T
21. cations are applicable for a one year calibration interval In line with normal prudent metrology practices A short cycle interval of six months is recommended for new units during the first year Table 2 Specifications LTR 25 140 LTR 40 140 Range 25 C to 140 C 40 C to 140 C 32 C to 284 F 40 F to 285 F at 23 C 73 F at 23 C 73 F Accuracy 0 2 C 0 36 F Stability 0 02 C 0 06 F Well to Well Uniformity 0 05 C 0 09 F within 25 C of ambient calibration wells Well Depth 6 152 mm Heating Time 15 minutes 25 C to 140 C Cooling Time 10 minutes 25 C to 20 C Test Wells Two 1 4 dia six 9 mm dia Resolution 0 01 C or 0 01 F Display LED C or F user selectable Size 13 H x 7 8 W x 11 9 D 342 x 198 x 302 mm Weight 30 Ib 13 6 kg Power 115 VAC 10 A 50 60 Hz 230 VAC 10 1 5 A 50 60 Hz 350 watts Operating Range 5 50 41 122 F Controller Hybrid analog digital controller with data retention Safety OVERVOLTAGE Installation CATEGORY II Pollution Degree 2 per 1 1010 1 Fault Protection Sensor burnout protection over temperature cutout and electrical fuses Fuses 115V 250 V 115V 4A T 250 V 230V 1 6A T 250 V 230V 3 15A T 250 V 3 Specifications and Environmental Conditions 3 2 3 3 3 3 1 Table Transfer Calibration Accuracy Transfer Calibration Accu
22. ceptable limits The stated accuracy of the instrument can be found in the specification table in Section 3 1 Because of the way the calibration parameters affect the temperature the simplest way to proceed is to measure the errors at 0 C 100 C 140 C and 25 C and adjust RO ALPHA DELTA and BETA at each point re spectively Follow these steps 1 as found data is required measure the error at various temperatures throughout the range such as 40 for LTR 40 140 25 for LTR 25 140 0 25 50 75 100 and 140 C The errors are measured by setting the controller to the desired temperature allowing the block to reach the temperature and stabilize and reading the actual temperature of the block with the standard thermometer If the measured errors are all within acceptable limits no further action is required and following the remainder of this procedure is not necessary If the accuracy needs to be improved continue with Step 2 2 Set the set point to 0 C and allow adequate time for the block to reach this temperature and stabilize Adjust the RO calibration parameter see Section 7 10 1 1 to make the block temperature as measured with the standard thermometer match the set point The approximate ratio be tween a change in RO and a change in temperature at 0 C is about 0 4 8 Calibration Procedure to 1 For example if the block temperature is high by 0 1 C at 0 C then decrease RO by 0 04 Set the set
23. cord DO NOT use this instrument for any application other than calibration work DO NOT turn the instrument upside down with the inserts in place the inserts will fall out DO NOT operate near flammable materials Use of this instrument at HIGH TEMPERATURES for extended periods of time requires caution Completely unattended operation is not recommended for safety reasons Always replace the fuse with one of the same rating voltage and type Overhead clearance is required DO NOT place the instrument under a cabinet or other structure Always leave enough clearance above the instrument to allow for safe and easy insertion and removal of probes If the instrument is used in a manner not in accordance with the equipment de sign the operation of the dry well may be impaired or safety hazards may arise The block vent may be very hot due to the fan blowing across the heater block of the dry well This instrument is intended for indoor use only Always operate this instrument at room temperature between 41 F and 122 F 5 C to 50 C Allow sufficient air circulation by leaving at least 10 inches 25 4 cm of clearance around the instrument 1 Before You Start 1 2 2 A Cautions Component lifetime can be shortened by continuous high temperature operation Most probes have handle temperature limits Be sure that the probe handle tem perature limit is not exceeded in the air above the instrument DO NOT use fluids to c
24. eam sterilizers The LTR has six wells for sensors and two wells for IRTD probes For calibrat ing thermocouples there are inserts that go into each well to reduce stem con duction errors thereby providing maximum accuracy and stability With inserts installed each of the six sensor wells can hold up to three type 28 or 22 gauge Teflon thermocouples for a total of 18 thermocouples The Validator 2000 automatically performs the sensor calibration including programming the set point temperatures at the LTR If you are using the LTR as a standalone instrument the temperatures can be manually set to any tempera ture within the specified range by using the four control buttons located on the front panel The calibrator controller uses a precision platinum RTD as a sensor and con trols the well temperature with thermoelectric modules The LED front panel display continuously shows the current well temperature These dry well calibrators are designed for portability moderate cost and ease of operation With proper use they should provide continued accurate calibra tion of temperature sensors and devices The user should be familiar with the safety guidelines and operating procedures of the calibrator as described in this User s Guide 3 1 3 Specifications and Environmental Conditions Specifications and Environmental Conditions Specifications The following table lists the specifications for this instrument Accuracy speci fi
25. erature to stabilize 6 4 Calibrating Sensors Sensor calibration 1s performed prior to carrying out a validation test to correct raw temperature readings to a traceable temperature measurement standard Due to the LTR s range of temperature and rapid heating and cooling capabili ties the instrument can be used to provide calibrations for a variety of valida tion processes To provide maximum accuracy a two point calibration should be performed close to the operating temperature of the process The Validator 2000 automatically downloads the calibration set points defined in your setup to the LTR and controls the entire sensor calibration procedure 6 General Operation Before you begin the calibration process e Place the Validator 2000 in a location with stable and even temperature not exposed to any local heat sources close to a sterilizer an open door causing a draft etc e To provide maximum accuracy during the calibration process power up the Validator 2000 and let it run for approximately 30 minutes in the oper ating environment where calibration is to be performed in order for the Validator 2000 to acclimate to the ambient temperature e Since transient environmental temperature will cause thermal measure ments to change Kaye specifies that the Validator system be allowed to stabilize for at least 30 minutes for every 10 C change in temperature For example if you move the Validator 2000 from a 25 C environment
26. et point To set the temperature select the set point memory and then adjust the set point value This function is accessed from the temperature display function by pressing SET The number of the set point memory currently being used is shown at the left on the display followed by the current set point value 20 00 Well temperature in degrees Celsius SET Access set point memory 7 Controller Operation Press SET to accept the new selection and access the set point value Accept selected set point memory 7 3 2 Set point Value The set point value may be adjusted after selecting the set point memory and pressing SET The set point value is displayed with the units C or F at the left Set point 3 value in C If the set point value does not need to be changed press EXIT to resume dis playing the well temperature Press UP or DOWN to adjust the set point value C 12 00 New set point value When the desired set point value is reached press SET to accept the new value and access the temperature scale units selection If EXIT is pressed then any changes made to the set point are ignored SET Accept new set point value 7 4 Set point Resistance To display the Set point Resistance press SET and DOWN simultaneously when the temperature is displayed When the SET and DOWN buttons are released the temperature is again displayed This value is used to
27. hese controls only apply to instruments fitted with the serial interface The parameters in the menu are BAUD rate sample period duplex mode and linefeed BAUD Rate The BAUD rate is set at 2400 and is not adjustable The BAUD rate of 2400 is required to communicate with the Validator 2000 Sample Period The sample period is the time period in seconds between temperature measure ments transmitted from the serial interface For example if the sample rate is set to 5 the instrument transmits the current measurement over the serial inter face approximately every five seconds The automatic sampling is disabled with a sample period of 0 The sample period is indicated by am eee ee Press SET to choose to set the sample period The current sample period value will be displayed pud ees e EM Adjust the value with UP or DOWN and then use SET to set the sample rate to the displayed value 58 60 i New sample period Duplex Mode The next parameter is the duplex mode The duplex mode may be set to full du plex or half duplex With full duplex any commands received by the calibrator via the serial interface are immediately echoed or transmitted back to the device of origin With half duplex the commands are executed but not echoed The du plex mode parameter is indicated by 7 Controller Operation 7 10 3 4 Linefeed The final parameter in the serial interface menu is the linefeed mode This
28. ime the tem perature settles to within a specified stability 15 i Soak time in minutes Press SET to continue Save new setting 7 5 4 Program Function Mode The next parameter is the program function or cycle mode There are four pos sible modes They determine whether the program scans up from set point to n only or both up and down from set point to n and back from set point n to 1 and also whether the program stops after one cycle or repeat the cycle indef initely The table below shows the action of each of the four program mode settings Function Action up stop 2 up down stop 3 up repeat 4 up down repeat Program mode Use the UP or DOWN buttons to change the mode 7 5 5 7 6 7 7 7 Controller Operation i New mode Press SET to continue SET Save new setting Program Control The final parameter in the program menu is the control parameter The control options are to start the program from the beginning continue the program from where it was when it was stopped or stop the program Pe QFF Program presently off Pe SEArE Start cycle from beginning Press SET to activate the new program control command and return to the temperature display Activate new command 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
29. isplayed value will be ignored Control Indicator The Control Indicator is a two color light emitting diode This indicator lets the user visually see the ratio of heating to cooling When Set Down Up Exit LTR 40 140 Figure Front Panel 5 Parts and Controls the indicator is constant red the well is heating and when it is constant green the well is cooling When the indicator is flashing then the temperature is being held constant 5 3 Constant Temperature Block Assembly 5 3 1 Constant Temperature Block The block Figure 4 is made of aluminum and provides a relatively constant and accurate temperature environment in which the sensors that are to be cali brated are inserted Attached to the block are Peltier thermoelectric modules which heat or cool the block to maintain a constant temperature A high quality platinum RTD is imbedded in the block to sense the temperature and provide feedback to the temperature controller 6 7 mm 0 265 9 mm 0 354 9 mm 0 354 6 7 mm 0 265 Figure 4 Temperature Block 6 1 6 2 6 2 1 6 2 2 6 General Operation General Operation Calibrator Set Up Place the calibrator on a flat surface with at least 10 inches of free space around the instrument DO NOT place under a flammable structure or cabinet Plug the power cord into a grounded mains outlet Observe that the nominal voltage cor responds to that indicated on the back of the calibrator
30. lean out the well Never introduce any foreign material into the probe hole of the insert Fluids etc can leak into the instrument causing damage DO NOT change the values of the calibration constants from the factory set values The correct setting of these parameters is important to the safety and proper operation of the calibrator DO NOT slam the probe stems in to the well This type of action can cause a shock to the sensor and affect the calibration The instrument and any thermometer probes used with it are sensitive instru ments that can be easily damaged Always handles these devices with care DO NOT allow them to be dropped struck stressed or overheated The master reset sequence should be performed only by authorized personnel if no other action is successful in correcting a malfunction You must have a copy of the most recent Report of Calibration to restore the calibration parameters DO NOT operate this instrument in an excessively wet oily dusty or dirty en vironment Always keep the well and inserts clean and clear of foreign material The dry well is a precision instrument Although it has been designed for opti mum durability and trouble free operation it must be handled with care Al ways carry the instrument in an upright position to prevent the probe sleeves from dropping out The convenient fold up handle allows one hand carrying If a mains supply power fluctuation occurs immediately turn off the instru
31. long with likely causes and solutions If a problem arises please read this section carefully and attempt to understand and solve the problem If the dry well seems faulty or the problem cannot otherwise be solved contact GE Kaye Instruments Customer Service for assistance 1 800 964 KAYE or in Europe 49 0 7231 14335 0 Be sure to have the instrument model number serial number and voltage available Problem Possible Causes and Solutions Incorrect temperature Incorrect RO ALPHA DELTA and BETA parameters Find the values for RO reading ALPHA DELTA and BETA on the Report of Calibration that was shipped with the instrument or from subsequent calibrations of the instrument Reprogram the pa rameters into the instrument memory see Section 7 10 1 Probe Parameters Al low the instrument to stabilize and verify the accuracy of the temperature reading Controller locked up The controller may have locked up due to a power surge or other aberration Initialize the system by performing the Factory Reset Sequence Factory Reset Sequence Hold the SET and EXIT buttons down at the same time while powering up the instrument After the instrument displays init release the buttons The display shows init the instrument model number and the firmware version After performing the master reset sequence all of the configuration param eters are reset to their default values Reprogram RO ALPHA DELTA and BETA rameters into the
32. m the power source 2 Inserta flat headed screwdriver into the slot on the PEM 3 Remove the fuse holder from the PEM 4 Change the fuses to the appropriate current rating for the voltage 5 Replace fuse holder with the appropriate voltage displayed through the window of the PEM 6 power cord may need to be changed to mate with the appropriate 230 VAC or 115 VAC socket Some options are listed e 230 VAC Europe 10A approved cord with CEE 717 plug US 15 approved cord with a NEMA 6 15 straight blade plug e 115 VAC US 15 approved cord with a NEMA 5 15 plug 6 3 Setting the Temperature Section 7 3 explains in detail how to set the temperature set point on the cali brator using the front panel keys The procedure is summarized here 1 Press SET twice to access the set point value 2 Press UP or DOWN to change the set point value 3 Press SET to program in the new set point 4 Press EXIT to return to the temperature display When the set point temperature is changed the controller switchs the well heater on or off to raise or lower the temperature The cycle indicator a two color LED indicates on red and heating or off green and cooling The dis played well temperature gradually changes until it reaches the set point temper ature The well may require 5 to 20 minutes to reach the set point depending on the span Another 5 to 10 minutes is required for the temp
33. ng Explanation of the button or display reading are to the right of each button or display value Well Temperature The digital LED display on the front panel allows direct viewing of the actual well temperature This temperature value is what is normally shown on the dis play The units C or F of the temperature value are displayed at the right For example 20 00 Well temperature in degrees Celsius The temperature display function may be accessed from other functions by pressing the EXIT button Reset Cutout The cutout has two modes automatic reset and manual reset see Section 7 10 2 2 and determines how the cutout resets allowing the instrument to heat up again When in automatic mode the cutout resets itself as soon as the tem perature is lowered below the cutout set point With manual reset mode the cut out must be reset by the operator after the temperature falls below the set point If the over temperature cutout has been triggered the temperature display alter nately flashes cutout Indicates cutout condition The message continues to flash until the temperature is reduced and the cutout is reset 7 Controller Operation gt SET DOWN Display Set point Resolution
34. oller such as this the heater output power is proportional to the well temperature over a limited range of temperatures around the set point This range of temperature is called the proportional band At the bot tom of the proportional band the heating is 100 At the top of the proportional band the cooling is 100 Thus as the temperature rises the heater power is re duced which consequently tends to lower the temperature back down In this way the temperature is maintained at a fairly constant temperature The temperature stability of the well and response time depend on the width of the proportional band see Figure 6 If the band is too wide the well tempera ture deviates excessively from the set point due to varying external conditions This is because the power output changes very little with temperature and the controller cannot respond very well to changing conditions or noise in the sys tem If the proportional band is too narrow the temperature may swing back 7 Controller Operation and forth because the controller overreacts to temperature variations For best control stability the proportional band must be set for the optimum width Proportional Band too Narrow Proportional Band too Wide Optimum Proportional Band MM Figure 6 Well Temperature Fluctuation at Various Proportional Band Settings The proportional band width is set at the factory and recorded on the Report of Calibration The p
35. ow the well temperature and the well heater starts oper ating to bring the temperature of the well to the set point temperature Power Plug the dry well power cord into a mains outlet of the proper voltage fre quency and current capability See Section 3 1 Specifications for power details Turn the dry well on using the rear panel POWER switch The dry well turns on and begins to heat to the previously programmed temperature set point The front panel LED display indicates the actual dry well temperature 4 Quick Start 4 4 These instruments are field switchable between 115 V and 230 V Refer to Sec tion 6 2 Switching to 230 V Operation for information on switching the voltage Setting the Temperature When you calibrate thermocouples using the LTR and the Validator 2000 the set points are defined as part of the calibration procedure and automatically downloaded from the Validator 2000 to the LTR If you are using the LTR as a standalone instrument Section 7 3 explains in detail how to set the temperature set point on the calibrator using the front panel keys The procedure is summa rized here 1 Press SET twice to access the set point value 2 Press UP or DOWN to change the set point value 3 Press SET to program in the new set point 4 Press EXIT to return to the temperature display When the set point temperature is changed the controller switchs the well heater on or off to
36. racy 22 Gauge Wire 27 Gauge Wire Transfer calibration accuracy 0 25 C from 40 to 25 C 0 15 C from 40 to 25 C of thermocouples to IRTD 0 2 C from 25 to 80 C 0 1 C from 25 to 80 C probe at 25 C with inserts 019 from 010 50 C 0 15 C from 80 to 121 1 C excluding probe uncertainty 04 C from 80 to 140 C 0 18 C from 121 1 to 140 C Environmental Conditions Although these instruments have been designed for optimum durability and trouble free operation they must be handled with care The instrument should not be operated in an excessively dusty or dirty environment Maintenance and cleaning recommendations can be found in the Maintenance Section of this manual The instrument operates safely under the following conditions e temperature range 5 50 41 122 F e ambient relative humidity 15 50 e pressure 75kPa 106kPa e mains voltage within 10 of nominal e vibrations in the calibration environment should be minimized e altitude less than 2 000 meters e indoor use only Hardware Warranty and Assistance Instrument Warranty GE Kaye Instruments warrants its products against defects in materials and workmanship for a period of 12 months from the date of shipment GE Kaye In struments will at its option repair or replace products which prove defective during this warranty period provided they are returned to our facility in Billerica Massachusetts European warranty returns are sent
37. raise or lower the temperature The displayed well tempera ture gradually changes until it reaches the set point temperature The well may require 5 to 10 minutes to reach the set point depending on the span Another 5 to 10 minutes is required to stabilize with 0 1 C of set point Ultimate sta bility may take 15 to 20 minutes more of stabilization time 5 1 5 Parts and Controls Parts and Controls The user should become familiar with the dry well calibrator and its parts Rear Panel See Figures and 2 Power Cord At the rear of the calibrator is the removable power cord that plugs into a standard 115 VAC grounded socket 230 VAC optional Power Entry Module LTR 40 140 The power switch is located on the power entry module PEM The PEM also houses the fuses The supply voltage for the unit is indicated on the PEM RS 232 ogo MADE USA CAT 300V 115V 230V 50 60 Hz A 115V 4AT 250V 350W Ne 230V 3 15AT 250V Figure LTR 40 140 Back Panel 5 Parts and Controls Power Switch LTR 25 140 The power switch is located on the left corner of the rear panel LTR 25 140 Serial Number A24002H Made In USA LINE VOLTAGE INSTRUCTIONS FUSE SWITCH REQUIRED POSITION VOLTS sLow BLow UP DN 100VAC 3 AMPT UP UP 115VAC AMPT DN DN 200VAC 1 6 AMPT DN UP 230VAC 1 6 AMPT FUSES TURN POWER OFF BEFORE CONNECTING CABLES MOOE ADE RS 232 M 00
38. rd Read the User s Manual Important Information Off On 1 Before You Start 1 2 1 2 1 Symbol Description Canadian Standards Association US OVERVOLTAGE Installation CATEGORY Pollution Degree 2 per 1010 1 refers to the level of Impulse Withstand Voltage protection provided Equipment of OVERVOLTAGE CATEGORY is energy consuming equipment to be supplied from the fixed installation Examples include household office and laboratory appliances CAT Safety Information Use this instrument only as specified in this manual Otherwise the protection provided by the instrument may be impaired Refer to the safety information in the Warnings and Cautions sections below The following definitions apply to the terms Warning and Caution e Warning identifies conditions and actions that may pose hazards to the user e Caution identifies conditions and actions that may damage the instru ment being used A Warnings To avoid possible shock or personal injury follow the guidelines BURN HAZARD DO NOT touch the well access surface of the instrument e The temperature of the well access is the same as the actual display tem perature e g if the instrument is set to 140 C and the display reads 140 C the well is at 140 C e The top sheet metal of the dry well may exhibit extreme temperatures for areas Close to the well access e The air over the well can
39. roportional band width may be altered by the user if he de sires to optimize the control characteristics for a particular application The proportional band width is easily adjusted from the front panel The width may be set to discrete values in degrees C or F depending on the selected units The proportional band adjustment is accessed within the secondary menu Press SET and EXIT to enter the secondary menu and show the heater power Then press SET to access the proportional band To accept the new setting and access the cutout set point press SET Pressing EXIT will exit the secondary menu ignoring any changes just made to the proportional band value 7 Controller Operation SET Accept the new proportional band setting 7 9 Cutout As a protection against software or hardware fault or user error the calibrator is equipped with an adjustable cutout device that shuts off power to the heater if the well temperature exceeds a set value This protects the instrument and probes from excessive temperatures The cutout temperature is programmable by the operator from the front panel of the controller If the cutout is activated because of excessive well temperature then power to the heater is shut off and the instrument cools The well cools until it reaches a few degrees below the cutout set point temperature At this point the action of the cutout is determined by the setting of the cutout mode parameter The cu
40. roughout the full range 9 Maintenance Maintenance e 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 Avoid operating the instrument in an oily wet dirty or dusty environment e Ifthe outside of the instrument becomes soiled it may be wiped clean with a damp cloth and mild detergent Do not use harsh chemicals on the surface which may damage the paint tis important to keep the well of the calibrator clean and clear of any for eign matter DO NOT use fluid to clean out the well e The dry well calibrator should be handled with care Avoid knocking or dropping the calibrator e For dry wells with removable probe sleeves the sleeves can become cov ered with dust and carbon material If the buildup becomes too thick it could cause the sleeves to become jammed in the wells Avoid this build up by periodically buffing the sleeves clean fa sleeve should be dropped examine the sleeve for deformities before inserting it in the well If there is any chance of jamming the sleeve in the well file or grind off the protuberance e DONOT slam the probe stems into the well This type of action can cause a shock to the sensor Ifa hazardous material is spilt on or inside the equipment the user is re sponsible for taking the
41. rt will solve the problem with minimal inconvenience and expense Factory repairs can frequently be completed on a fixed price basis A base ser vice fee plus labor and materials will be charged in lieu of the fixed repair price upon customer request or if extensive repairs are required Customers are requested to obtain a return authorization number prior to return ing any instrument for service All instruments serviced at the factory will be repaired updated calibrated and completely tested prior to shipment Equipment Maintenance Agreements An optional Equipment Maintenance Agreement provides an annual preventive maintenance visit with certified recalibration plus replacement parts through out the year Contact the Customer Service Department at 800 964 5293 for details and prices European customers contact the Customer Service Depart ment at 49 0 7231 14335 0 Customer Support Within 90 days of shipment from the factory installation and initial configura tion assistance will be provided by a Customer Service Representative via phone or FAX at no charge 3 Specifications and Environmental Conditions 3 3 6 3 3 7 After 90 days from shipment technical assistance or consultation will be lim ited to identification and resolution of instrument failures unless a Customer Support Agreement has been purchased Customer Support Agreement An optional Customer Support Agreement provides additional phone or FAX
42. ss SET to enter the menu The probe parameters menu contains the pa rameters RO ALPHA DELTA and BETA which characterize the resis tance temperature relationship of the platinum control probe These parameters may be adjusted to improve the accuracy of the calibrator This procedure is ex plained in detail in Section 10 The probe parameters are accessed by pressing SET after the name of the parameter is displayed The value of the parameter may be changed using the UP and DOWN buttons After the desired value is reached press SET to set the parameter to the new value Pressing EXIT will cause the parameter to be skipped ignoring any changes that may have been made RO This probe parameter refers to the resistance of the control probe at 0 C The value of this parameter is set at the factory for best instrument accuracy ALPHA This probe parameter refers to the average sensitivity of the probe between 0 and 100 C The value of this parameter is set at the factory for best instrument accuracy DELTA This parameter relates to the second order nonlinearity of the sensor The value is set at the factory for best instrument accuracy 7 Controller Operation 7 10 1 4 BETA This parameter relates to the higher order nonlinearity of the sensor below 0 C The value is set at the factory for best instrument accuracy 7 10 2 Operating Parameters The operating parameters menu is indicated by
43. t out has two modes automatic reset or manual reset If the mode is set to au tomatic the cutout automatically resets itself when the temperature falls below the reset temperature allowing the well to heat up again If the mode is set to manual the heater remains disabled until the user manually resets the cutout The cutout set point may be accessed within the secondary menu Press SET and EXIT to enter the secondary menu and show the heater power Then press SET twice to access the cutout set point SET Access heater power secondary menu To accept the new cutout set point press SET SET Accept cutout set point 7 10 7 10 1 7 10 1 1 7 10 1 2 7 10 1 3 7 Controller Operation The next function is the configuration menu Press EXIT to resume display ing the well temperature Controller Configuration The controller has a number of configuration and operating options and calibra tion parameters that are programmable via the front panel These are accessed from the secondary menu after the cutout set point function by pressing SET There are 4 sets of configuration parameters probe parameters operating pa rameters serial interface parameters and controller calibration parameters The menus are selected using the UP and DOWN keys and then pressing SET Probe Parameters The probe parameter menu is indicated by PrObE Probe parameters menu Pre
44. t is calibrated Do not alter the value of these parameters If the user desires to calibrate the instrument for im proved accuracy calibrate RO and ALPHA according to the procedure given in Section 10 Sco This parameter is used at the factory for testing purposes and should not be al tered by the user 8 1 1 8 1 2 8 Calibration Procedure Calibration Procedure Calibration Procedure Calibration of this instrument should be performed at regularly scheduled inter vals by qualified authorized personnel in accordance with your company s pol icy Following is the recommended procedure for calibrating this instrument Calibration Equipment Calibration requires a standard thermometer that is adequately accurate and fits properly into one of the reference holes in the block Recommended equipment includes a laboratory grade PRT with a length of 230 to 300 mm 9 to 12 inches and a diameter of 4 76 or 6 35 mm 3 16 or 1 4 inches The combined accuracy of the PRT and the readout used to display the temperature should be 0 025 C or better Calibration The accuracy of the instrument over the full range is determined by the values of the calibration parameters RO ALPHA DELTA and BETA The calibration procedure involves measuring the error between the instrument and the refer ence thermometer at several temperature throughout the range and adjusting the calibration parameters as necessary to reduce the errors to within ac
45. to Pforzheim Germany Repairs necessitated by misuse of this product are not covered by this warranty No other warranties are expressed or implied including but not lim ited to the implied warranties of merchantability and fitness for a particular purpose Kaye Instruments Inc is not liable for consequential damages 3 3 2 3 3 3 3 3 4 3 3 5 3 Specifications and Environmental Conditions In Warranty Repairs Customers are requested to discuss their problem with a Kaye Service Repre sentative to insure a prompt and accurate assessment of their needs Frequently a problem can be resolved via phone or FAX with minimal inconvenience or delay If necessary the Customer Service Representative will send replacement parts or authorize the return of the instrument to the factory for repair Instruments serviced in this manner will be repaired completely tested and calibrated prior to shipment When an instrument is returned to the factory the customer must prepay the freight charges Kaye will prepay freight charges for the instrument s return via a comparable shipment method If Field Service is required under the warranty the customer is responsible for travel and living expenses incurred by the Field Service Representative After Warranty Repairs Customers are requested to discuss their problem with a Kaye Service Repre sentative to insure a prompt assessment of their needs Frequently a customer installed exchange pa
46. w location or deviates differently than in the first area RF energy is present in the room If you have to perform the test in the effected area use the comparison test to eliminate any possible errors Comments EMC Directive GE Kaye Instruments equipment has been tested to meet the European Electro magnetic Compatibility Directive EMC Directive 89 336 EEC The Declara tion of Conformity for your instrument lists the specific standards to which the unit was tested Low Voltage Directive Safety In order to comply with the European Low Voltage Directive 73 23 EEC GE Kaye Instruments equipment has been designed to meet the IEC 1010 1 EN 61010 1 and the IEC 1010 2 010 EN 61010 2 010 standards 10 Troubleshooting Wiring Diagrams 10 3 940 AD 1 9016 33n1VH3dWal AVIdSIG NOISS3A OVA 0 VO E NOISS3A OVA SLE VS 38504 WALSAS H3ddOO 8 15 SI SHIM Q38 1HM LI 49018 ESI N f H3AIHG 9016
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