PEGASUS R MODEL 970
Contents
1. tissue uidi ua uidi l6 SING FEE TPCINTERSEAS eat eee tata b 17 17 CABINOTEPAD 18 DEVELOPMENT 18 HOW TO INSTALL CAL INO TEPAD achete dote osea 19 PROTOCOL Mc m E 19 FIGURE PEGASUS R PAINEE LAYOUT AND FUNC FONS ducto esent saeua tco dote tuns 20 FIGURE 207 E EE 21 APPENDIX F TROUBLE SAHQOTING c DET 24 a nE A T 24 FAILS AIO D DERE 24 CONTROLLER DISPLA WINS DA G en pda E EEE R 24 HEATER el M m 24 WARM UPTIME UNUSUALLY ENG iioi neos t HS REOR om un eR Eno RU UE LR 24 INDICATORMISBEPAVES 570 24 PH 24 Page 2 of 24 Pegasus 155 07 08 13 _ISOT CH _ GUARANTEE This instrument has been manufactured to exacting standards and is guaranteed for twelve months against electrical break down or mechanical failure caused through defective material or workmanship provided the failure is not the result of misuse In the event of failure covered by this guarantee the instrument must be returned carriage paid to the supplier for examination and will be replac2. acetal Le tec areal ace ease oe oop saute 7 THE BASIC WORKINGS OF THE PEGASUS isti tait deben ed te qu docta on ua 8 OPERA TKON ee 8 Altering the Furnace Temperature Set eea 8 ASSEMBLING TIE E eae eee nee eee 9 INITIALE TESTING cerceii 10 CALIBRATION USING THE TEMPERATURE INDICATED ON THE nnne TUTORIAL THE USE OF A PEGASUS CALIBRATED SOURCE TO CALIBRATE RADIATION PYROMETERS 12 12 12 Jsme the beta aed ba 12 Requirements for an Optical Bench See Figure 19071 12 Typical Calibration Evaluation of an Industrial Pyrometer 13 DESCRIPTION 13 BACK 13 RE IGP pee rm t 13 ee 13 METHOD 14 Evaluatiorroflthie Optical Bench 14 Call DRAGON 5 Table Calibration o piedi tm
3. 10 00 600 000 500 000 400 000 aft 210 00 10 00 300 000 4 200 000 100 000 Running PEN P Test Comms Measurements Start aem 4 LY gm Source COM Port Controller Address Controller Value Controller Setpoint PLUS EiBISynch 4 ar Ji 0 00 0 00 J J Contacts SITE Model Indicator Address Indicator Value Frozen PY J2 0 00 10 00 DEVELOPMENT Cal NotePad was developed by Isothermal Technology using LabVIEW from National Instruments The license details are shown on the download page and in the Cal Notepad manual Page 18 of 24 Pegasus 155 07 08 13 _ISOT CH _ HOW TO INSTALL CAL NOTEPAD Download the ZIP from http www isotech co uk downloads 7 6 2 Extract the files to a temporary folder 3 Run setup exe if Isotech CNP Setup Piel Es Welcome to the Isotech CNP Installation Wizard It is strongly recommended that vau all Windows programs before running this setup program Click Cancel to quit the setup program then close any programs pou have running Click Next to continue the installation WARNING This program i protected by copyright law and international treaties Unauthorized reproduction or distribution of this program or any portion of it may result in severe and criminal penalties and will be prosecuted to the maximum extent possible under law Cancel 4 Follow the prompts which will install the
4. PEGASUS MODEL 970 User Maintenance Manual Handbook Isothermal Technology Limited Pine Grove Southport PR9 9AG England Tel 44 0 1704 543830 Fax 44 0 1704 544799 Internet www isotech co uk E mail info isotech co uk The company is always willing to give technical advice and assistance where appropriate Equally because of the programme of continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice This publication is for information only Page of 24 Pegasus Iss 07 08 13 _ISOT CH _ CONTENTS CONTENT eee 2 3 CAUTIONARY NOT 4 EMCINFORMA TION MP EE 5 ELE AFET m 5 Environmental 5 Insert Warnie seeni ian D ETE 5 SAFETY INSTRUCTIONS diede hei ote deli ote 6 INTRODUCTION 7 UNPACKING INITIAL acd ho tua aset 7 ELECTRICITY
5. The thermocouple as can be seen from diagram 970 20 01 has a right angled bend in the ceramic sheath at its tip This bend is to facilitate insertion of the thermocouple tip into the cavity at the base of the black body target 970 01 02 see diagram 970 20 02 The internal wires of the thermocouple may be visible at the bend in the ceramic but this is normal the thermocouple is not broken Once the tip of the thermocouple has been situated in the cavity of the target the target is assembled into the well of the Pegasus The insulation piece 970 01 03 as shown in diagram 970 20 02 is then assembled into the Pegasus with the thermocouple alongside which sits in the groove in the insulation piece The thermocouple is connected to an indicator situated on the front of the Pegasus R as shown on figure The size and shape of the insulation and the position of the thermocouple are all important and if the assembly is modified the calibration certificate may become invalid Having assembled the Pegasus R a temperature is set see commissioning later in this document 3 steps are required to obtain the radiance temperature of the source a Set the required temperature on the controller b Take the reading on the indicator C Add or subtract the correction from the calibration sheet correction may be considered to vary linearly between calibration points to obtain the radiance temperature For example Say 1000 C is the controlle
6. Pegasus 155 07 08 13 _ISOT CH _ Audit Calibration Having established confidence in the optical bench system and the optical pyrometer The calibrated source Pegasus was set to the first calibration temperature and allowed to stabilise The optical pyrometer was placed in its holder as shown in fig 19071 The controller temperature the indicated source temperature and the optical pyrometer temperatures were noted From the calibration certificate the radiance temperature was calibrated The difference between the radiance temperature and the optical pyrometer temperature gives the error of the optical pyrometer reading within the uncertainty stated Results obtained at 5 temperatures are tabulated over leaf Page 15 of 24 Pegasus 155 07 08 13 _ISOT CH _ Table 1 Calibration Results PEGASUS R Standard Standard Standard Standard Standard CONTROLLER TEMP C 220 440 660 800 000 T C INDICATED TEMP SOURCE 222 442 660 797 99 Page 16 of 24 OPTICAL PYROMETER READING 220 438 656 793 986 RADIANCE TEMP READING CORRECTED FROM NPL CERT C 226 448 8 662 795 98 Pegasus 155 07 08 13 _ISOT CH _ USING THE PC INTERFACE The PLUS models include an RS422 PC interface and a special converter cable that allows use with a standard RS232 port When using the bath with an RS232 port it is essential that this converter cable
7. Pegasus 155 07 08 13 Page 22 of 24 IA JIAJI inci eT ATT A fy ad AAA oq el L BR j NOILcIHO Si f 30ISAZSH3MW LYOSHLNOS 3ACHD SWIONV 08 0 I2 HIOH 4 E IVANIT urul Q 4 SAIG e d Pegasus Iss 07 08 13 Page 23 of 24 _ISOT CH _ APPENDIX I TROUBLE SHOOTING TEMPERATURE UNSTABLE Controller has incorrect parameters set reset to standard If still unstable try the self tune option Check the electricity supply is stable UNIT FAILS TO HEAT Check controller is set correctly If the output indicator on the controller is lit the relay should operate the heater If the output indicator stays off it is likely the controller is set incorrectly CONTROLLER DISPLAY UNUSUAL Error or system message Refer to Isotech or your local Agent HEATER FAIL ON If the temperature of the block increases rapidly with the controller output staying off the relay and sensor are suspect Do not use the unit contact Isotech or your agent WARM UP TIME UNUSUALLY LONG Controller set incorrectly failure of one heater or cooling fan permanently on Check controller settings The fan on the side panel should always be on INDICATOR MISBEHAVES S ONLY Wrong configuration code entered check against table If SnSr FAIL is displayed check probe connections displayed with no probe connected
8. application a user manual with setup information and the necessary LabVIEW run time support files 5 Should you ever need to uninstall the software then use the Add Remove Programs option from the Control Panel PROTOCOL The instruments use the Modbus Protocol If required e g for writing custom software the technical details are available from our Document Library at http www isotech co uk Page 19 of 24 Pegasus 155 07 08 13 _ISOT CH _ FIGURE 1 PEGASUS PANEL LAYOUT AND FUNCTIONS 2 2 3 gt CAUTION HOT SURFACE l T C SOCKET 2 INDICATOR 3 CONTROLLER 4 CALIBRATION AREA Page 20 of 24 Pegasus Iss 07 08 13 FIGURE 19071 Instrument Datum Cyclops Pyrometer Pyrometer Stand with clamp and traversing capability V Section Rail of Optical Bench Target Distance B Pegasus R 4444444454 Elevation Target Surface Cavity Plan View Page 21 of 24 Pegasus 155 07 08 13 EA ee E if p 1 v E 4 2 gt V 438A IN INVA v NOILdlsOS 3C 3dI5A3SM3A em AOOTONHOUL IVINSHWHILOSI SUI IONV 06 0 SWIG HVHNTI SJNNI JI8VL QNIAd 15 1315 SSV 19 80
9. calibrated The optical bench allowed 3 freedom of movements BACK amp FORTH The distance to the optical pyrometer transfer standard from the rear of the Black Body is 750mm An optical bench allows the optical pyrometer transfer standard to be moved from 660mm to 000 HEIGHT The height of the optical pyrometer can be adjusted by 10 Ibmm from the normal position LATERAL MOVEMENT The optical pyrometer can be moved sideways by 10 I 5mm from the normal position Page 13 of 24 Pegasus 155 07 08 13 _ISOT CH _ METHOD Evaluation of the Optical Bench The Pegasus R item was set up in the normal position as described above The controller temperature was set to 1000 After stabilisation the 3 freedom of movement were evaluated a Back amp Forth The optical pyrometer was moved back amp forth by 100mm The following readings were obtained 9PTICALPYROMETER READING 650mm from rear of target to optical pyrometer 984 750mm 983 850mm 983 b At a distance of 750mm The focal length of the optical pyrometer was changed METRES FOCAL LENGTH READING 0 C The height of the optical pyrometer was altered 2mm 982 Normal 983 2mm 982 d The lateral position of the optical pyrometer was adjusted and the optical pyrometer rotated to align with the centre of the target LATERAL MOVEMENT READING C Right mm 5 983 10 983 Left mm 5 983 10 983 Page 14 of 24
10. inserts are specially processed for the use with the Pegasus It is important that only inserts supplied by Isothermal Technology Ltd are used Failure to comply with this information may result in damage which would not be covered under warranty Page 5 of 24 Pegasus Iss 07 08 13 _ISOT CH _ HEALTH AND SAFETY INSTRUCTIONS Read this entire manual before use Wear appropriate protective clothing Operators of this equipment should be adequately trained in the handling of hot and cold items and liquids Do not use the apparatus for jobs other than those for which it was designed i e the calibration of thermometers Do not handle the apparatus when it has hot or cold unless wearing the appropriate protective clothing and having the necessary training Do not drill modify or otherwise change the shape of the apparatus Do not dismantle the apparatus Do not use the apparatus outside its recommended temperature range If cased do not return the apparatus to its carrying case until the unit has cooled There are no user serviceable parts inside Contact your nearest lsotech agent for repair Ensure materials especially flammable materials are kept away from hot parts of the apparatus to prevent fire risk Page 6 of 24 Pegasus 155 07 08 13 _ISOT CH _ INTRODUCTION The Pegasus R has been designed to be rugged and easily maintainable By using a proprietary plug in controller the total electronics package
11. is used Replacement cables are available from lsotech part number ISO 232 432 A further lead is available as an option Part Number ISO 422 422 lead which permits up to 5 instruments to be daisy chained together The benefit of this approach is that a number of calibration baths may be connected together in a daisy chain configuration and then linked to a single RS232 see diagram RS422 RS422 Note The RS 422 standard specifies a maximum lead length of 1200M 4000ft A true RS422 port will be required to realise such lead lengths The conversion leads are suitable for maximum combined lead lengths of 10M that is adequate for most applications CONNECTIONS For RS232 use simply connect the Isotech cable a 9 to 25 pin converter is included to suit PCs with a 25 pin serial converter RS422 Connections Pin Connection 4 A 5 8 9 Rx B Page 17 of 24 Pegasus 155 07 08 13 _ISOT CH _ CAL NOTEPAD Cal Notepad can be used can be used to log and display values from the Dry Blocks and an optional temperature indicator such as the milliK or TTI 10 The software requires Windows 9X XP a minimum of 5Mb of free hard drive space and free serial ports for the instruments to be connected LB Isotech CNP 2006 File Help Instrument Heat Source Chart Log ISUTZCH aii 700 0007 Setpoint Programming Active NEN Scroll Minutes Temperature j 7 0 ani 30 00
12. and the European Low Voltage Directive BS EN 61010 1 Amendment To ensure emission compliance please ensure that any serial communications connecting leads are fully screened The product meets the susceptibility requirements of EN 50082 1 criterion B Symbol Identification Publication Description 1503864 Caution refer to manual AN IEC 417 Caution Hot Surface N ELECTRICAL SAFETY This equipment must be correctly earthed This equipment is a Class Appliance A protective earth is used to ensure the conductive parts cannot become live in the event of a failure of the insulation The protective conductor of the flexible mains cable which is coloured green yellow MUST be connected to a suitable earth The blue conductor should be connected to Neutral and the Brown conductor to Live Line Warning Internal mains voltage hazard Do not remove the panels There are no user serviceable parts inside Contact your nearest Isotech agent for repair Voltage transients on the supply must not exceed 2 5kV Conductive pollution e g Carbon dust must be excluded from the apparatus 6 010 pollution degrees 2 The apparatus has two input connectors for temperature sensors see Figure These inputs are only suitable for either a thermocouple or resistance thermometer No other sensor or signal may be connected Environmental Ratings Operating Temperature 0 50 Relative Humidity 5 9596 non condensing Insert Warning The
13. can be replaced in a few minutes As can be seen from the parts list remarkably few components have been used each of which are easily removed and replaced This model provides a volume of constant temperature in which an N P L designed black body source is situated according to the accompanying assembly drawing Fig 970 20 02 The temperature required is set on the bottom controller The indicator above the controller when connected to a type R thermocouple positioned centrally at the target matrix indicates the temperature of the source Radiance temperature that is read by a radiation pyrometer is found from the calibration certificate if supplied The Pegasus model is part of a range of portable calibrators designed and made by ourselves Please contact us or visit our website www isotech co uk if you require more information about our other products UNPACKING AND INITIAL INSPECTION Our Packing Department uses custom designed packaging to send out your unit but as accidents can still happen in transit you are advised after unpacking the unit to inspect it for any sign of shipping damage and confirm that your delivery is in accordance with the packing note If you find any damage or that part of the delivery is missing notify us or our agent and the carrier immediately Keep the packing if damaged for possible inspection by an insurance assessor ELECTRICITY SUPPLY Before connecting to the electricity supply please fami
14. check that the link is fitted correctly and that the configuration is for a thermocouple type MAINTENANCE The only moving part is the fan It has sealed for life bearings Depending on the environment in which it is used periodic cleaning of them and the inside of the case is recommended Cleaning may be accomplished by the use of a small dry paint brush The instrument should be periodically checked to ensure it is in good order both mechanically and electrically Page 24 of 24 Pegasus Iss 07 08 13
15. ed or repaired at our option FRAGILE CERAMIC AND OR GLASS PARTS ARE NOT COVERED BY THIS GUARANTEE INTERFERENCE WITH OR FAILURE TO PROPERLY MAINTAIN THIS INSTRUMENT MAY INVALIDATE THIS GUARANTEE RECOMMENDATION The life of your ISOTECH Instrument will be prolonged if regular maintenance and cleaning to remove general dust and debris is carried out ISUT CH ISOTHERMAL TECHNOLOGY LTD PINE GROVE SOUTHPORT PRI 9AG ENGLAND TEL 44 0 1704 543830 54461 FAX 44 0 1704 544799 The company is always willing to give technical advice and assistance where appropriate Equally because of the programme of continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice This publication is for information only Page 3 of 24 Pegasus 155 07 08 13 _ISOT CH _ A CAUTIONARY NOTE ISOTECH PRODUCTS ARE INTENDED FOR USE BY TECHNICALLY TRAINED AND COMPETENT PERSONNEL FAMILIAR WITH GOOD MEASUREMENT PRACTICES IT IS EXPECTED THAT PERSONNEL USING THIS EQUIPMENT WILL BE COMPETENT WITH THE MANAGEMENT OF APPARATUS WHICH MAY BE POWERED OR UNDER EXTREMES OF TEMPERATURE AND ARE ABLE TO APPRECIATE THE HAZARDS WHICH MAY BE ASSOCIATED WITH AND THE PRECAUTIONS TO BE TAKEN WITH SUCH EQUIPMENT Page 4 of 24 Pegasus R Iss 07 08 13 _ISOT CH _ CE EMC INFORMATION This product meets the requirements of the European Directive on Electromagnetic Compatibility EMC 2004 108 EC
16. hold the UP key to raise the value or the DOWN key to the lower the value 4 The display will return to show the nominal block temperature when no key is pressed for 0 5 second A The other controller functions are hidden from the operator The values are pre set and should not be changed Page 8 of 24 Pegasus R Iss 07 08 13 _ISOT CH _ ASSEMBLING THE INSERT Where the unit is to be used with a standard or special insert the insert ceramics must be assembled as per the drawing below Ensure furnace is cool Slide the long ceramic insulator 970 01 03C down the furnace tube so that it rests on the base Carefully lower the smaller ceramic 970 01 03B inside the furnace to rest on the lower ceramic Load the blackbody 970 01 02 with the reference thermocouple installed 970 20 01 d n Finally add the upper top ceramic insulator 970 0 I 03A REFERENCE SENSOR 970 20 01 CERAMIC INSULATION 970 01 03A PEGASUS FURNACE 853 07 00 BLACKBODY TARGET 970 01 02 CERAMIC INSULATION 970 01 03B CERAMIC INSULATION 970 01 03C 970 PEGASUS CASE Page 9 of 24 Pegasus 155 07 08 13 _ISOT CH _ INITIAL TESTING This unit was tested before despatch to you but please check its operation as outlined below and in Appendix After connecting the Pegasus to the electricity supply the temperature controller display will show the temperature of the furnace and the last set po
17. int value The controller and indicator both go through a self test sequence first The fan on the side panel should be heard running Change the set point to 200 C and observe that the furnace temperature rises and settles to this value For the R place a thermometer in the source and connect it to the suitably configured see procedure indicator Confirm that the indicator agrees within a few degrees of the controller Your unit should have performed as described above and can now be used for calibration If any problems or faults arise during these tests please contact us or our agents for help and advice WARNING To prolong the life of the heater windings the temperature should not be increased by more than in 200 increments allow the temperature controller to indicate it as at the fixed point before resetting the next temperature increment The controller s function settings should not normally require any changes from what we have set them to Page 10 of 24 Pegasus 155 07 08 13 _ISOT CH _ CALIBRATION USING THE TEMPERATURE INDICATED ON THE CONTROLLER Remove the Pegasus from its case and visually inspect it for any damage it may have sustained since it was last used Insert the black body source assembly see fig 970 20 02 into the furnace tube with the ceramic insulators 2 Connect the Pegasus R to a suitable power supply and set the controller to the required temperature see the controller s
18. liarise yourself with the parts of the manual relevant to your model Your unit s supply voltage requirement is specified on a plate on the base of the instrument along with the serial number All Pegasus instruments will work on an electricity supply frequency of 50Hz or 60Hz Consult temperature controller manual The unit s electricity supply cable is colour coded as follows COLOUR FUNCTION Green yellow Earth Ground Brown Live Line Blue Neutral Please ensure that your unit is correctly connected to the electricity supply Page 7 of 24 Pegasus 155 07 08 13 _ISOT CH _ THE BASIC WORKINGS OF THE PEGASUS The purpose of the Pegasus model is to provide an adjustable isothermal enclosure for calibration purposes The isothermal enclosure consists of a fixed heated furnace The heated furnace houses a graded heater winding and the control sensor used by the temperature controller to sense the furnace temperature To obtain and maintain a required temperature the controller varies the power to the heater via a solid state relay A fan runs continuously and cools the electronics in the instrument OPERATION Altering the Furnace Temperature Set point Switch on The controller will briefly show its software version before displaying an indication of the block temperature 2 Momentarily press either the UP or DOWN key once to display the setpoint desired temperature 3 To alter the value press and
19. manual for details and Fig 3 Wait for the temperature to stabilise 4 When the temperature indicated by the controller and the output of the thermometer are both stable see specification for typical values record three sets of readings over a period of about six minutes Check that these readings are consistent and then calculate their average values 5 The Pegasus has itself been calibrated correct the average values accordingly 6 Reset the controller and or repeat the calibration for another thermometer 7 When the calibration is complete reset the controller to 0 and wait until the unit has cooled to below 400 C before moving the Pegasus to a new location The Pegasus must be cooled to about 100 before it can be put back into its carrying case Page 11 of 24 Pegasus Iss 07 08 13 _ISOT CH _ TUTORIAL THE USE OF A PEGASUS CALIBRATED SOURCE TO CALIBRATE RADIATION PYROMETERS INTRODUCTION The Pegasus R is designed as a source for the calibration of radiation pyrometers over the range 200 C to 200 C Most users of radiation pyrometers are unfamiliar with the procedures for calibration and the tutorial below is intended to help new users It is meant only as a guide and not as a gospel Setting up the Source The Pegasus R comprises a small tube furnace of diameter approximately 35mm Separately is a 3 part assembly plus a thermocouple which assembles into the tube furnace as diagram 970 20 02
20. r set point The indicated value might be 991 C If the calibration certificate is consulted the radiance temperature is noted to be 10 lower than the indicated value i e 981 Using the Source The simplest and least accurate method of using the source is to set its temperature calculate its radiance temperature as described above and point the radiation pyrometer at the source More usually a small optical bench is built to accurately hold the source and pyrometer enabling proper alignment to take place Requirements for an Optical Bench See Figure 19071 An optical bench can be a very expensive piece of apparatus of precision ground components or a very basic piece of equipment built onto a wooden board Page 12 of 24 Pegasus 155 07 08 13 _ISOT CH _ For normal industrial pyrometers a simple bench is quite adequate My suggestion is a slide piece to enable pyrometers of varying focal length to be calibrated and a holder for the pyrometer which allows 2 freedom of movement i e height and lateral position A Typical Calibration Evaluation of an Industrial Pyrometer A typical calibration sequence for a optical pyrometer is given below adapted from our UKAS submission DESCRIPTION A calibrated target is used as the source of information together with the certificate of calibration see ref NPL 12317 91 001 dated 15 05 1991 An optical bench was built see drawing 19071 which allowed an optical pyrometer to be
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