Thermocouple Calibration
Contents
1. chm X gain blir chm bir blir X gain D SELECT INDICATOR LINE ON SELECT KNOB MUST POINT TO Vref POSITION 14 OU C CONTROL BOX JUMPER CABLE RED STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration of the display BC represent the steam generator offset value in hexadecimal The two digits in the upper right corner of the display TO represent the chamber offset value in hexadecimal and to the left of it TTT T is the chamber temperature value 5 10 11 12 13 14 Adjust the VREF potentiometer on the Controller Board to set the reference voltage to 2 520 V x 0 001 V Before starting calibration check that there is sufficient steam process distilled water in the reservoir and that the calibration cassette is correctly engaged in the STAT M In this mode error messages are not displayed Install the calibration cassette into the STAT M and attach the digital reference thermometer Calibrate the steam generator thermocouple See Steam Generator Thermocouple Calibration Software Rev 4 00 and up Calibrate the chamber thermocouple See Chamber Thermocouple Calibration Software Rev 4 00 and up After calibration is complete turn the STAT M OFF and remove the calibration jumper Disconnect the Control box Connect the right an2. Thermocouple Calibration 10 Start another cycle and verify that the calibration readings are within acceptable values If the readings are not within these values repeat step 9 until the proper voltmeter reading is obtained 11 Once adjusted apply a drop of non conducting laquer or nail polish to the adjustment screw of the TC ADJ potentiometer Control Box Controller Board SELECT knob digital voltmeter Vref potentiometer calibration cassette thermocouple digital thermometer TC ADJ potentiometer Calibration jumper connection Calibration jumper not shown SOON OY amp CO nm Figure 2 STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 96 104260 Rev 2 0 Thermocouple Calibration Calibration Procedure for Type B Controller Boards The chamber and steam generator thermocouples must be calibrated to ensure the correct operation of the STAT M The steam generator thermocouple is calibrated automatically by a special calibration cycle in the Type B Controller Boards The chamber thermocouple is calibrated by adjusting a potentiometer on the Controller Board while comparing the temperature on the LCD display with the temperature measured by the digital reference thermometer within the calibration cassette In calibration mode no error messages are displayed For calibration equipment hookup and identification observe these steps see Figure 2 To calibra
3. 260 Rev 2 0 Thermocouple Calibration 3 5 During the steam generator warm up before the cassette temperature reaches 100 C adjust the TC ADJ potentiometer 9 so that the displayed chamber temperature matches the temperature of the digital thermometer to within 2 C As the cycle proceeds the chamber temperature reaches the sterilization temperature drops to 115 C and then regains sterilization temperature After 20 40 seconds a long beep will sound indicating that steam generator calibration is complete The number in the upper left hand corner of the LCD has changed to display the new steam generator offset value E8 gt gt CALIBRATING lt lt F5 0 00 C 135 00 C Press the STOP button on the control box to end the steam generator calibration cycle and to depressurize the cassette Press STOP a second time to reset the unit example Chamber Thermocouple Calibration Type B Boards To calibrate the chamber thermocouple follow these steps see Figure 2 1 Turn the power switch to OFF Ensure the calibration jumper is in place and turn the power switch ON The LCD will read E8 gt gt CALIBRATING lt lt F5 60 00 C 90 00 C To start a chamber calibration cycle press and release the UNWRAPPED cycle button on the control box and then press the START button The STAT M will run a regular UNWRAPPED cycle but continue to show calibration information on the LCD example STAT M Cassette Autoclave Ser
4. 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration Thermocouple Calibration for Software up to and including Rev 3 00 Incorrect or inaccurate calibration may cause unsuccessful sterilization of instruments Always calibrate the thermocouples after a thermocouple replacement thermocouple bend or disconnect controller board replacement or microprocessor EEPROM replacement steam generator replacement or probe bracket replacement Make sure that there is sufficient steam process distilled water in the unit prior to starting calibration Do not place the digital reference thermometer in direct sunlight on the armature or on any other hot surfaces This may cause improper values on the temperature readout A e o STATIM Cassette Autoclaves have been manufactured using different Controller Boards See Controller Board Hardware Software Identifying the Controller Board Type Assembly and revision numbers are located on the bottom right hand portion of the component side of the board For detailed differences between board versions see Controller Board Hardware Software Units containing boards bearing the following numbers must follow Calibration Procedure for Type A Controller Board 01 100005A Version 3X 01 100004A Version 3X 01 100004A Version 4X 01 100020A Version 01 100638A Version 3X 01 100992 Version 4X 01 101170 Version 4X 01 101172 Version 4X STAT M Cassette Autoclave
5. L Thermocouple Calibration 96 104260 Rev 2 0 Thermocouple Calibration When referring to the Troubleshooting portion of this service manual note that there are specific check cassette error messages for Type A Controller Boards and specific cycle fault messages for Type B Controller Boards For calibration equipment hookup and identification see Figure 1 Calibration Procedure for Type A Controller Boards These steps MUST be performed in sequence to calibrate a unit with a Type A Controller Board 1 Reference Voltage Verification Adjustment 2 Steam Generator Thermocouple Calibration 3 Chamber Thermocouple Calibration including Steam Generator recalibration Reference Voltage Verification Adjustment Type A Boards To verify adjust the reference voltage follow these steps see Figure 1 1 Turnthe autoclave unit OFF connect the Control Box 1 to the Controller Board 2 Connect the digital voltmeter 5 to the VREF terminals Set the meter to read DC Volts with a resolution of 1mV 2 Powerthe autoclave unit ON 3 Adgjustthe VRH potentiometer until VREF is 4 000 V 0 001 4 VREF is adjusted apply a drop of non conducting laquer or nail polish to the adjustment screw of the potentiometer Steam Generator Thermocouple Calibration Type A Boards To calibrate the steam generator thermocouple follow these steps see Figure 1 1 Turnthe Control Box SELECT knob to blr chm This signa
6. Service Manual CONFIDENTIAL Thermocouple Calibration 96 104260 Rev 2 0 Thermocouple Calibration Typically these boards were manufactured with four potentiometers VREF DISP TC CHM and TC BLR and do not have a printer connector Refer to these boards as Type A Controller Board Units containing boards bearing the following numbers must follow Calibration Procedure for Type B Controller Boards 01101359 Any version Type 01 100881 Any version Type B 01101356 Any version Type Units containing boards with the following numbers follow Calibration Procedure for Software Rev 4 00 and up 01 108191Z Any version C 01 108380Z Any version C 01 108382Z Any version Type C For other Controller Boards contact SciCan Typically these boards were manufactured with 3 potentiometers VREF DISP and TC ADJ a six position J4 connector terminal labelled FLOAT PROBE CASSIN and the P2 printer connector Refer to these boards as Type B and Type C Controller Boards STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration Control Box Controller Board SELECT knob VRH potentiometer digital voltmeter calibration cassette thermocouple digital thermometer TC CHM potentiometer 0 TC BLR potentiometer e ue mme an 01 100004 ANS cent Rev 3 0 Ato Figure 1 STAT M Cassette Autoclave Service Manual CONFIDENTIA
7. er of the display CCC C is the difference between the steam generator and chamber temperatures The value in the upper left corner BBB B is the steam generator temperature The following two digits in the upper left corner Type C Figure 3 P opi Mt ASIN uk j jd li Ire A E po etl e Control Box Controller Board SELECT knob digital voltmeter calibration cassette thermocouple digital thermometer POUE O pa NOTE 2000 unit shown STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration Thermocouple Calibration CONNECTOR TEST PINS CONTROLLER BOARD POTENTIOMETER THERMOCOUPL PRINTER CONNECTOR E ADJUST VOLTAGE REFERENCE POTENTIOMETER DISPLAY CONTRAST POTENTIOMETER 96 104260 Rev 2 0 Figure 4 DISPLAY CONNECTOR MEMBRANE KEYBOARD CONNECTOR CONNECTOR DETAIL 20 PIN MOULDED SOCKET PLUGGED ON TO TEST PIN CONNECTOR 07 5 2000 De P4 8 Ts 14 PIN RIBBON CABLE SOCKET PLUGGED ON TO LCD CONNECTOR 7 PIN MOULDED SOCKET PLUGGED ON TO KEYBOARD CONNECTOR JUMPER CABLE BLACK SELECTED T SELECT KNOB DETAIL
8. gle LCD connector to Controller Board P3 Connect the keypad connector to Controller Board P4 Reinstall the cover See STATIM Cover Hemoval and Replacement STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 0 gt 96 104260 Rev 2 0 Thermocouple Calibration Steam Generator Thermocouple Calibration Software Rev 4 00 and up To calibrate the steam generator thermocouple follow these steps see Figure 3 To start a steam generator self calibration cycle hold down the UNWRAPPED cycle button on the control box and press the START button BBB B BC TTTT TO CCC C If the asterisk does not appear press the STOP button on the control box Turn the power switch OFF then ON again Hold down the UNWRAPPED cycle button on the control box and press the START button to startthe self calibration again During the steam generator warm up before the cassette temperature reaches 100 C adjust the calibration potentiometer so that the displayed chamber temperature matches the temperature of the digital thermometer to within 2 C As the cycle proceeds the chamber temperature will eventually reach sterilization temperature After 3 5 min along beep will sound indicating that steam generator calibration is complete The second number in the upper left hand corner of the LCD has changed to display the new steam generator offset value 120 7 C8 106 1 F9 14 6 example Press the STOP button on t
9. he control box to end the steam generator calibration cycle STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration Chamber Thermocouple Software Rev 4 00 and up To calibrate the chamber thermocouple follow these steps see Figure 3 1 Turn the power switch to OFF Ensure the calibration jumper is in place and turn the power switch ON The LCD will read 25 5 C8 24 1 F9 1 4 example To start a chamber calibration cycle press and release the UNWRAPPED cycle button on the control box and then press the START button The STAT M will run a regular UNWRAPPED cycle but continue to show calibration information on the LCD Allow the chamber to reach the sterilization temperature To change the temperature display on the LCD to match the temperature displayed on the digital thermometer adjust the TC ADJ potentiometer on the Controller board Continue adjusting TC ADJ until the temperatures on the LCD and digital thermometer are within 0 1 C Observe the temperatures displayed on the LCD and the digital thermometer for 30 seconds The temperatures registered should remain within 0 25 C of one another Adjust TC ADJ if not Press the STOP button on the control box when finished Wait for the beeps to signal that the cassette may be removed STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 964104260 Rev 2 0 Doc
10. he thermocouple 7 into the calibration cassette 6 and attach the digital thermometer 8 Ensure that the thermocouple and digital thermometer have matched serial numbers Turn the Control Box 1 SELECT knob 3 to chm X gain See Required Information and Tools The Control Box Locate the TccHM potentiometer 9 on the Controller Board 2 Setthe meter 5 to read DC Volts with a resolution of 1 mV Selectthe WRAPPED INSTRUMENT CYCLE button on the Control Box then press START Follow the phases of the cycle as they are displayed on the LCD warming up purging air pressurization sterilization Calibration occurs during the sterilization phase After approximately 2 minutes into the sterilization phase look for the digital thermometer 8 reading to remain constant for at least 2 seconds and record the values of the digital thermometer TCHm and digital voltmeter Using the TcHM value just recorded find the corresponding VCHMXGAIN value from the chamber calibration conversion chart See Chart A Adjust the TcHM potentiometer until VM matches VcHMXGAIN for the observed TcHM to within x 0 005 V Start another cycle and verify that the calibration readings are within acceptable values If not repeat steps 4 through 7 until acceptable values are achieved Repeat the steam generator thermocouple calibration procedure STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration
11. ital voltmeter to the VREF terminals on the control box Setthe voltmeter 4 to read DC Volts with a resolution of 1mV 2 Powerthe Statim ON 3 Adgjustthe VREF potentiometer until VREF is 2 520 V x 0 001 mV Once Vner is adjusted apply a drop of non conducting laquer or nail polish to the adjustment screw of the potentiometer Steam Generator Thermocouple Calibration Type B Boards To calibrate the steam generator thermocouple follow these steps see Figure 2 1 Turnthe autoclave unit OFF and install a calibration jumper on Controller Board header W1 Power the unit ON The LCD should appear similar to the example in step 2 2 Tostarta steam generator self calibration cycle hold down the UNWRAPPED cycle button on the control box and press the START button An asterisk will appear nextto the message CALIBRATING The LCD message appears steam generator chamber offset value 00 gt gt CALIBRATING lt lt FQ offset value in hexidecimal in hexidecimal 1 00C 20 00 C difference between steam generator chamber temperature and chamber temperature example If the asterisk does not appear press the STOP button on the control box twice to reset the unit Turn the power switch OFF then ON again Hold down the UNWRAPPED cycle button on the control box and press the START button to start the self calibration again 9 STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 96 104
12. l is the difference between the chamber and steam generator thermocouples See Hequired Information and Tools The Control Box 4 STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration 2 Setthe meter 5 to read DC Volts with a resolution of 1 mV and locate the TC BLR 10 potentiometer on the Controller Board 3 Selectthe UNWRAPPED INSTRUMENT CYCLE button on the Control Box then press START Follow the phases of the cycle as they are displayed on the LCD warming up purging air pressurization sterilization Calibration occurs during the sterilization phase 4 With 2 minutes and 25 seconds left in the sterilization cycle adjust the TC BLR potentiometer until the voltmeter reads 0 000 V 0 030 V Chamber Calibration Conversion Chart A TCHM VCHMXGAIN TCHM VCHMXGAIN TCHM VCHMXGAIN TCHM VCHMXGAIN VOLTS VOLTS VOLTS VOLTS STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 96 104260 Rev 2 0 Thermocouple Calibration Chamber Thermocouple Calibration Type A Boards There are no quick ways to calibrate a unit Calibration requires a number of readings and adjustments to achieve the required values Wait for equipment readings to stabilize and record them as quickly and precisely as possible To calibrate the cassette thermocouple follow these steps see Figure 1 15 Install t
13. nlight on the armature or any other hot surfaces This may cause improper values on the temperature readout eor The chamber and steam generator thermocouples must be calibrated to ensure the correct operation of the STATIM The steam generator thermocouple is calibrated automatically by a special calibration cycle inthe STAT M The chamber thermocouple is calibrated by adjusting a potentiometer on the Controller Board while comparing the temperature on the LCD display with the temperature measured by the digital reference thermometer within the calibration cassette In calibration mode no error messages are displayed To calibrate the STAT M follow these steps see Figure 3 1 Turnthe STAT M OFF and remove the cover Fill the reservoir with steam process distilled water and prime the pump See the Operator s Manual for instructions on priming the pump Replace the stopper in the tube and leave it outside the unit for further use 2 Install a calibration jumper on Controller Board header W1 located to the left of the microprocessor Connect the Control Box to the controller board 3 Setthe control box SELECT knob to VREF and connect a voltmeter as shown in Figure 2 4 Powerthe Unit ON The following LCD message appears BBB B BC TTT T TO CCC C 12 STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration 4 1 The value in the lower right hand corn
14. te a unit with a Type B Controller board follow these steps see Figure 2 1 Before starting calibration turn the STAT IM OFF and remove the cover Checkthat there is sufficient steam process distilled water in the reservoir and that the calibration cassette 6 is correctly engaged in the STAT M 2 Install the thermocouple 7 into the cassette and attach the digital thermometer 8 Ensure that the thermocouple and digital thermometer have matched serial numbers 3 Install the calibration jumper 11 to Controller Board pins marked W1 10 4 Adjust VREF See Reference Voltage Verification and Adjustment Type B Boards 5 Calibrate the steam generator thermocouple See Steam Generator Thermocouple Calibration Type B Boards 6 Calibrate the chamber thermocouple See Chamber Thermocouple Calibration Type B Boards 7 Repeat step 5 and verify the chamber thermocouple calibration by comparing the chamber temperature on the LCD with the reference thermometer temperature 8 After calibration is complete turn the STAT M OFF remove the calibration jumper and disconnect the Control box STAT M Cassette Autoclave Service Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration Reference Voltage Verification Adjustment Type B Boards To verify adjust the reference voltage follow these steps see Figure 2 1 Connectthe control box 1 to the Controller Board 2 and the dig
15. ument Change Record Document 96 104260 Title Thermocouple Calibration 04 0020 Updated chapter as per prEN13060 requirements January 16 2004 1 0 97 069 Initial Release November 24 1997 18 STAT M Cassette Autoclave Service Manual CONFIDENTIAL
16. vice Manual CONFIDENTIAL 96 104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration 3 Allowthe chamber to reach the sterilization temperature To change the temperature display on the LCD to match the temperature displayed on the digital thermometer adjust the TC ADJ potentiometer 9 on the Controller Board Continue adjusting TC ADJ until the temperatures on the LCD and digital thermometer are within 0 25 C 4 Observe the temperatures displayed on the LCD and the digital thermometer for 30 seconds The temperatures registered should remain within 0 25 C of one another Adjust TC ADJ if not 5 Press the STOP button on the control box when finished Wait for the beeps to signal that the cassette may be removed 6 Recalibrate the steam generator thermocouple See Thermocouple Calibration Type B Boards STAT M Cassette Autoclave Service Manual CONFIDENTIAL Thermocouple Calibration 964104260 Rev 2 0 Thermocouple Calibration Thermocouple Calibration for Software Rev 4 00 and up Incorrect or inaccurate calibration may cause unsuccessful sterilization of instruments Always calibrate the thermocouples after a thermocouple replacement thermocouple bend or disconnect controller board replacement or microprocessor EEPROM replacement Make sure that there is sufficient steam process distilled water in the STATIM prior to starting calibration Do not place the digital reference thermometer in direct su
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