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Ametek JOFRA ATC-125 A, Reference Manual

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Ametek JOFRA ATC-125 A Reference Manual Download Page 89

105446 06 

23-03-2009 

89 

8.0 Technical 

specifications 

 
The illustration below shows the setup that forms the basis for the 
technical specifications for dry-block calibrators.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Fig. 13

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Summary of Contents for JOFRA ATC-125 A

Page 1: ...Reference Manual Temperature Calibrator JOFRA ATC 125 140 156 157 250 320 650 A B Copyright 2009 AMETEK Denmark A S ...

Page 2: ...d a multi lingual user manual which sets out the operating instructions for the instrument It is designed to provide a quick reference guide for use in the field Safety symbols This manual contains a number of safety symbols designed to draw your attention to instructions that must be followed when using the instrument as well as any risks involved Warning Events that may compromise the safe use o...

Page 3: ...lay and standard connections 30 4 2 Input module B versions only 33 4 3 Display readouts 34 4 3 1 Main screen temperature values 35 4 3 2 Stability of temperature values 35 4 4 SET temperature menu 36 4 5 Calibration menu 36 4 5 1 Running a calibration 37 4 5 2 Showing calibration results 40 4 5 3 Displaying calibration information 41 4 6 Switch test menu 42 4 6 1 Running a switch test 44 4 6 2 Sh...

Page 4: ...Emptying the well liquidbaths only 66 6 0 Replacing the main fuses 67 6 1 Returning the calibrator for service 68 7 0 Maintenance 70 7 1 Cleaning 70 7 2 Adjusting and calibrating the instrument 72 7 2 1 Introduction to AmeTrim ATC Software 72 7 2 2 Installing the AmeTrim ATC Software 73 7 2 3 Connecting the PC and the Calibrator 73 7 2 4 Starting the AmeTrim ATC Software 73 7 2 5 Temperature Adjus...

Page 5: ...oducts This reference manual applies to the following instruments JOFRA ATC 125 A Cooling calibrator JOFRA ATC 125 B Cooling calibrator with input panel JOFRA ATC 140 A Cooling calibrator JOFRA ATC 140 B Cooling calibrator with input panel JOFRA ATC 155 A Cooling calibrator JOFRA ATC 155 B Cooling calibrator with input panel JOFRA ATC 156 A Cooling calibrator JOFRA ATC 156 B Cooling calibrator wit...

Page 6: ...el and conforms to the EMC Directive and the Low voltage Directive Technical assistance Please contact the dealer from whom you acquired the instrument if you require technical assistance Warranty According to current terms of sale and delivery This warranty only covers defects in manufacture and becomes void if the instrument has been subject to unauthorised intervention and or misuse ...

Page 7: ...ribed in this manual The calibrator has been designed for interior use only and should not be used in hazardous areas where vapour or gas leaks etc may constitute a danger of explosion The calibrator must be kept free within an area of 20 cm on all sides and 1 metre above the calibrator Never use heat transfer fluids such as silicone oil paste etc in the dry block calibrators These fluids may pene...

Page 8: ... hot insertion tubes which have been removed from the calibrator unsupervised they may constitute a fire hazard If you intend to store the calibrator in the optional aluminium carrying case after use you must ensure that the instrument has cooled down to a temperature below 100 C 212 F before placing it in the carrying case About the fuses The fuse box must not be removed from the power control sw...

Page 9: ...a fire hazard Do not pour water or any other fluids into a bath filled with hot oil because only a few drops of water might cause a steam explosion if poured into 250 C hot oil Do not under any circumstances pour water on burning oil It might cause a dangerous steam explosion Caution Hot surface This symbol is engraved in the grid plate Do not touch the grid plate the well or the insertion tube wh...

Page 10: ...in turn may cause verdigris to form on the material To prevent this from happening the insertion tube and the well must be dried This is done by heating up the calibrator to min 100 C 212 F and any water left will evaporate Remove the insulation plug while heating up It is very important that humidity in the well and insertion tube is removed to prevent corrosion and frost expansion damages Cautio...

Page 11: ...y alkali acid or ionic fluids in the aluminium well as it might be damaged Scratches and other damage to the insertion tubes should be avoided by storing the insertion tubes carefully when not in use The insertion tube must never be forced into the well The well could be damaged as a result and the insertion tube may get stuck Before using new insertion tubes for the calibration the insertion tube...

Page 12: ...to submerge the handle or wire inlet of the sensor under test in the fluid as this might damage the sensor liquid baths only Note The product liability only applies if the instrument is subject to a manufacturing defect This liability becomes void if the user fails to follow the instructions set out in this manual or uses unauthorised spare parts ...

Page 13: ...arts against the list shown below If any of the parts are missing or damaged please contact the dealer who sold the calibrator You should receive 1 calibrator 1 mains cable 2 sets of test cables 2 black 2 red B versions only 1 CD ROM containing software package JOFRACAL 1 AMETRIM ATC DTI software package to adjust the ATC series 7 1 4 8 2 5 0 9 3 6 i ESC _ CA LIB RAT IO N INS TR UM EN TS ...

Page 14: ...rsions 2 traceable certificates B versions 1 reference manual 1 user manual ATC 125 156 157 320 650 A B only 1 insertion tube user specified 3 pcs insulation plugs for 6 10 16 mm sensors ATC 125 156 A B only or 3 pcs insulation plugs for 5 8 11 mm sensors ATC 157 A B only Reference Manual User Manual ...

Page 15: ...t inch consisting of 1 insertion tube multi hole inch with 11 bores incl reference bore 1 pcs insulation plug for multi hole inch ATC 140 A B only ATC 140 250 A B only liquid bath 1 liquid bath kit consisting of 1 sensor basket 2 lids for transportation calibration 1 stirring magnet 1 stirring magnet remover 1 liquid drainage syringe 1 silicone oil 1 oil material safety data sheet When reordering ...

Page 16: ...erence Sensors in the JOFRACAL user manual on the CD Warning The calibrator must not be used for any purposes other than those described in this manual The calibrator has been designed for interior use only and should not be used in hazardous areas where vapour or gas leaks etc may constitute a danger of explosion The calibrator must be kept free within an area of 20 cm on all sides and 1 metre ab...

Page 17: ...re you intend to use it Caution Do not use the instrument if the internal fan is out of order Ensure a free supply of air to the internal fan located at the bottom of the instrument The area around the calibrator should be free of draught dirt flammable substances etc 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F4 F5 F2 CA LI BRA TIO N IN STR U ME NTS ...

Page 18: ...ing a screwdriver B Take out the fuse box C Remove both fuses replacing them with two new fuses These must be identical and should correspond to the line voltage See chapter 9 0 B Turn the fuse box 180 and slide it back into place Check that the earth connection for the instrument is present and attach the cable Select an insertion tube with the correct bore diameter See section 3 2 2 for informat...

Page 19: ...lected on the basis of the diameter of the sensor to be calibrated Use the table for insertion tubes in chapter 9 0 to find the correct part number Alternatively you may order an undrilled insertion tube and drill the required hole yourself The finished dimensions should be as follows Sensor diameter 0 2 0 05 0 mm In order to get optimum results and preventing ice from building up in the well of t...

Page 20: ...ing Never use heat transfer fluids such as silicone oil paste etc in the dry block calibrator These fluids may penetrate the calibrator and cause damage or create poisonous fumes Insert the sensors as shown in fig 2a Fig 2a 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F4 F5 F2 CA LIB RA TI O N INS TRU ME NT S Reference sensor if available Sensor under test Insertion tube ...

Page 21: ...insertion tube it may be very hot Do not touch the handle of the calibrator during use it may be very hot Caution Cold surface If the calibrator has reached a temperature below 0 C 32 F ice crystals may form on the insertion tube and on the well This in turn may cause verdigris to form on the material To prevent this from happening the insertion tube and the well must be dried This is done by heat...

Page 22: ... be operated by trained personal AMETEK Denmark A S does not take any responsibility if the well is filled with other fluids than those recommended Heat transfer fluids must only be used in calibrators with an liquid bath If these fluids are overheated they will create noxious or toxic fumes Proper ventilation must be used Product information on the fluid must be carefully investigated before use ...

Page 23: ...RA TIO N INS TR UM EN TS Reference sensor if available 1 2 4 5 7 9 3 6 8 Oil Fig 1b 3 3 1 When setting up the liquid bath calibrator you must Place the calibrator on an even horizontal surface where you intend to use it Place it in a way that will minimize the risk of tilting ...

Page 24: ... be identical and should correspond to the line voltage See chapter 9 0 B Turn the fuse box 180 and slide it into place Check that the earth connection for the instrument is present and attach the cable Place the parts from the liquid bath kit in the well in the following order Stirring magnet It is very important that the stirring magnet is in place and spinning before any calibration is attempte...

Page 25: ... a steam explosion if poured into e g 250 C hot oil Caution Do not use any alkali acid or ionic fluids in the aluminium well as it might be damaged Be careful not to overfill the well with oil The oil level rises several centimetres when the temperature is rising to maximum To stop the overflow switch off the main power and the oil level will decent Remove excess hot fluid with the outmost care as...

Page 26: ... sensor is absolutely clean and dry as a few drops of water might cause a steam explosion Place the sensor to be calibrated vertically into the well It is recommended to use the optional support rod set for a correct position during calibration See fig 2b Fig 2b Caution The tip of the sensor should rest at the bottom of the sensor basket for optimum results ...

Page 27: ...proper handling use and disposal of fluid read fluid product information When reading this information pay special attention to details regarding fume point flash point boiling point and point of decomposition When the fluid temperature approaches the fume point it is necessary to use proper ventilation An exhaust hood is recommended When ventilation is applied take care not to expose the calibrat...

Page 28: ...crystals the oil must be dried out by heating it up Warning Do not handle hot fluid If the fluid is heated beyond the flash point it may constitute a fire hazard If the fluid has caught fire switch off the main power to prevent further heating of the fluid Flames are best extinguished by cowering the well with a non flammable lid Warning Do not under any circumstances pour water on burning oil It ...

Page 29: ...librated in fluid E g certain ceramic sensors might be destroyed Caution The insertion tube must be clean before use Scratches and other damage to the insertion tubes should be avoided by storing the insertion tubes carefully when not in use Carefully wipe off all silicone oil from the sensor under test to avoid spreading of the silicone oil Caution Hot surface Do not touch the lid or the spill tr...

Page 30: ...andard connections Keyboard Fig 3 Pos Description LCD SOFT KEYS used to select menu options displayed in the LCD ENTER KEY used to accept selected options or entered values NUMERIC KEYS used to type in values CALIBRATION INSTRUMENTS 1 2 3 3 4 5 6 heading icon information functions ...

Page 31: ... selection edit or return to previous menu Display Fig 4 The Display is divided into four separate areas Heading Informs you of the current function selected Icon Indicates graphically the status of the calibrator Information Provides the bulk of information and data in the selection Functions Informs you of the soft keys functions heading icon information functions ...

Page 32: ... Connection for synchronization output The state of the synchronization output is determined by the READ or TRUE temperature dependent on the choice of reference sensor by the following guidelines When the extended stability time is 0 minute the relay is switched on for 2 seconds when stability is achieved When the extended stability time 1 minute for the internal reference sensor READ the relay i...

Page 33: ...dule must NEVER be connected to voltages exceeding 5V for the TC RTD sockets and 45V for the mA V sockets proportional to ground Thermostats must not be connected to any other voltage sources during test Description of sockets for external connections Fig 6 7 6 5 4 3 2 1 8 Ref Input V mA Pas mAAct 45V MAX Switch Test 5V MAX TC ...

Page 34: ...on is for dead switches TC connection for thermocouples One of the inputs either or can be selected displaying the SENSOR temperature in the Setup and can be displayed as TRUE temperature Note Only the sensor type which is to be tested should be connected to the input panel 4 3 Display readouts Switch on the calibrator using the power control switch pos 1 in fig 5 The start up menu is displayed fo...

Page 35: ...emperature measured by an external reference sensor This is only displayed when an external reference sensor is used and replaces READ temperature 4 3 2 Stability of temperature values The stability of the READ TRUE and SENSOR temperatures are indicated by the following messages Not stable Indicates that the measured temperature is not yet within the specified stability criteria Time to stable Ind...

Page 36: ...existing value Press to accept the value and return to the main menu screen 4 5 Calibration menu Note This Calibration function is for B versions only This function enables you to perform automatic calibrations of multiple temperature sensors The calibration procedure is semi automatic using parameters and settings which are defined in work orders These work orders are created and edited using the...

Page 37: ... Running a calibration Press to select the Run calibration menu F3 F2 F4 F5 F1 Use and to scroll through the list and highlight an existing work order Press to continue the calibration using the highlighted work order or Press to create a copy of the work order Then press to accept the new name Copies have the same name as the original work orders but contain a suffix number making the name unique...

Page 38: ...rameters or Press to start the editor F3 F2 F4 F5 F1 Make the necessary changes exit the editor by pressing and continue the calibration by pressing If the sensor under test is a thermocouple sensor and the manual compensation mode is selected in work orders a cold junction temperature must be defined ...

Page 39: ...ue the calibration by pressing F3 F2 F4 F5 F1 Press if you wish to overwrite the existing calibration and continue If the work order is defined as a manual input or are used to determine when the values are to be entered to enter values during the calibration to enter values after the calibration Follow the instructions on screen to connect the sensors and press to start the calibration ...

Page 40: ...ion 4 5 2 4 5 2 Showing calibration results Press to select the Show calibration menu F3 F2 F4 F5 F1 Use and to scroll through the list and highlight a specific work order Press to display the calibration details for the selected work order The calibration results can be uploaded with the AmeCal Temperature PC program This enables you to print out the results on a certificate Calibration result de...

Page 41: ...nu 4 5 3 Displaying calibration information Calibration information is defined within the work orders created on the PC using JOFRACAL This information is divided in to six pages of information Use and to scroll through the pages The scroll wraps around allowing you to go from page 6 to page 1 and vice versa ...

Page 42: ...r under test page 4 If a Digital Temperature Indicator DTI is used the Measurement field will display the DTI channel used External reference sensor page 5 This screen is only available when an external reference sensor is used If a DTI is used the Measurement field will display the DTI channel used Calibration procedure page 6 This shows the pre defined temperature steps for the calibration 4 6 S...

Page 43: ...ch temperature of the thermostat Fig 7 Press in the main menu to select the Switch test menu F3 F2 F4 F5 F1 Two functions are available using the soft keys Calibrator stable Shifting temperature Calibrator stable Heating with Slope Rate T Cooling with Slope Rate T T Expected switch range for thermostat Calibrator stable t min T C F T T T T T 2 Open Close 1 Start Open Close Hyste ...

Page 44: ... a two temperature measurement and No a single temperature measurement To edit the slope rate The permitted range is 0 1 9 9 C min 0 2 17 8 F min Note the slope rate should be set so that the thermostat sensor can follow the temperature in the calibrator s well Make the necessary changes and exit the editor by pressing Press to start the switch test While the switch test is in progress three funct...

Page 45: ...T2 is achieved If T2 is achieved and the temperature is stable No Shift result is displayed 5 When hysteresis is not selected single temperature change the finished switch test result is displayed see section 4 6 2 When hysteresis is selected two switch changes the calibrator starts working towards T1 at the specified slope rate 6 Normally the thermostat changes state before T1 is achieved If T1 i...

Page 46: ...h test the results are displayed These show the final result of the test and are known as the finished results F3 F2 F4 F5 F1 Note A hysteresis value is only displayed when hysteresis is selected If either the first or second temperature displays No shift hysteresis displays Error For details see chapter 6 0 When you exit the switch test either by pressing or these results are stored in the calibr...

Page 47: ...the same as that displayed at the end of the switch test 4 7 Auto step menu Auto step is used to step automatically between a range of different calibration temperatures This is useful when calibrating sensors in places that are difficult to reach and sensors where the output is displayed in a different location Fig 8 Temperature stable Calibrator starts working towards next temperature t T T T T ...

Page 48: ...he Auto step setup and step temperature values No of steps the number of temperature steps per direction T1 Tx can be set using integers from 1 20 When a Two way mode is selected the same number of steps are used for the second direction Tx T1 Mode toggle between One way and Two way Hold time defines the time in minutes the temperature is maintained after it is stable for each step T step values m...

Page 49: ...perature step s stability To stop the Auto step test When the Auto step test is complete the results are displayed Press or to finish the test and store the results in the calibrator The results can be viewed using the instructions in section 4 7 2 By pressing the results are not stored in the calibrator s memory 4 7 2 Auto step test results At the end of a Auto step test the results are displayed...

Page 50: ...50 23 03 2009 105446 06 To view stored switch test results Press to select Show results F3 F2 F4 F5 F1 Press a function soft key to select one of the last five Auto step tests stored in the calibrator ...

Page 51: ...three separate pages Use the function key s labelled more to change page Use the soft keys to select the individual functions page 1 page 2 page 2 ATC 140 250 A B only page 3 page 3 ATC 140 250 A B only F3 F2 F4 F5 F1 4 8 1 Loading a setup Loading a setup causes all the parameters in the setup menu being to be overwritten ...

Page 52: ...a setup saves all the parameters in the Setup menu Press setup page 1 to select Save setup to registry Use the keyboard to select a register number 1 9 Press to save the current setup in the selected register and return to the setup menu 4 8 3 Adjusting the display contrast Press setup page 1 to select Display contrast Press to make the display darker or to make the display lighter Press to accept...

Page 53: ...function soft key to select the temperature units To select Celsius To select Fahrenheit To select Kelvin Press to accept the new setting Setting the temperature resolution Press to select temperature resolution F3 F2 F4 F5 F1 Press a function soft key to select the temperature type Press a function soft key to set the resolution 1 resolution 0 1 resolution ...

Page 54: ...w value or press to edit the existing value Press to accept the new setting and return to the Max SET temperature menu Converting electrical inputs to temperatures Press to select the Conversion to temperatures menu F3 F2 F4 F5 F1 Setting voltage or current input conversions from the electric signal to a temperature reading Press a function soft key to select the type of input Press a function sof...

Page 55: ...omatic mode is selected the calibrator measures the temperature in the T C connector and uses this for the cold junction compensation of the thermocouple Press to select Cold junction compensation Press a function soft key to enable the editor To select compensation mode toggle between Automatic and Manual To define a Manual temperature for the cold junction compensation This can be used when an e...

Page 56: ...eck that the displayed serial number is the same as on the reference sensor otherwise the sensors coefficients need to be downloaded to the ATC This is done with the PC software JOFRACAL included on the CD Please read how to do in the Chapter Reference Sensors in the JOFRACAL user manual on the CD To change Convert to temperature function Yes sets the readout of the External reference as a tempera...

Page 57: ...to select type of sensor Press a function soft key to select a specific type of sensor For voltage sensors 0 4V or 0 12V For a 4 20mA sensor For RTD sensors Pt10 Pt50 Pt100 Pt500 Pt1000 Cu50 or Cu100 For thermocouple sensors E J K L N R S T U or XK For None no sensor connected Press a function soft key to select a specific sensor and return to the Sensor under test menu which now displays the sele...

Page 58: ... the parameters displayed are active then the calibrator s internal reference criteria provide the time to stable value Stability values defined in the menu above are added to the internal reference stability criteria Press to select the editor Stability Time and Extended Stability Time can be set in minutes using integers from 0 120 Stability intervals can be set in 0 01 steps from 0 01 99 99 Mak...

Page 59: ... speed level chosen is too high the magnet will fall off making a rattling sound and there will be no stirring in the fluid With no stirring of the fluid temperature gradients will emerge in the bath which will again affect the result of the calibration To reconnect the magnet set the speed level to 0 and select a speed setting lower than the previous Press to accept the value and return to the se...

Page 60: ...9 Typing 0000 disables the access code function Press to accept the new access code and exit the editor by pressing again 4 8 9 Resetting the calibrator setup to factory defaults Resetting to the factory default settings changes the setup to the initial settings Press setup page 3 to restore Factory defaults ATC 125 156 157 320 650 A B Press setup page 3 to restore Factory defaults ATC 140 250 A B...

Page 61: ...t the calibrator Press setup page 3 to select About ATC 156 157 320 650 A B Press setup page 3 to select About ATC 140 250 A B This informs you about the calibrator type the software version installed and the date when it was last calibrated Press or to return to the Setup menu ...

Page 62: ... mode is used to train personnel The simulation differs from the standard setting in the following ways The instrument does not actually heat up or cool down the well The heating and cooling processes are simulated at exaggerated speeds Data is not stored in the calibrators memory The calibrator will remain in simulation mode until it is switched off ...

Page 63: ...ors only The following routine must be observed before the insertion tube is removed and the instrument switched off Over 100 C 212 F If the calibrator has been heated up to temperatures above 100 C 212 F you must wait until the instrument reaches a temperature below 100 C 212 F before you switch it off Below 0 C 32 F applies only to the ATC 125 140 156 157 A B models If the calibrator has reached...

Page 64: ...nd frost expansion damages Remove the insertion tube from the calibrator using the tool for insertion tube supplied with the instrument see fig 9 Fig 9 Tool for insertion tube Hole for tool for insertion tube Tool for insertion tube Insertion tube 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F4 F5 F2 CA LIB RA TI O N IN ST RU ME NT S ...

Page 65: ...ed to a temperature below 100 C 212 F before placing it in the carrying case Do not touch the well or insertion tube when these are deep frozen they can create frost bites 5 8 1 Transporting the dry block calibrator Caution The insertion tube must be removed to avoid damage to the instrument if the calibrator is to be transported long distances 5 8 2 Transporting the liquid bath calibrator Before ...

Page 66: ...e hot items which have been removed from the well unsupervised they may constitute a fire hazard The following guidelines must be observed before emptying the well 1 Switch off the calibrator using the power control switch 2 Before handling the fluid it must be cooled down to a temperature close to ambient 3 Remove the sensor basket and clean it with disposable paper towels 4 Remove the stirring m...

Page 67: ...has been disconnected The two main fuses must be identical and correspond to the chosen voltage Fig 10 Locate the main fuses in the fuse box in the power control switch Open the lid of the fuse box using a screwdriver Remove the fuse box Replace the fuses ATC 125 140 156 157 115V 5AT 60B315 230V 2 5AT 123690 ATC 250 320 650 115V 10AF 60B302 230V 5AF 60B301 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F4 F5 F...

Page 68: ...less than 100g and it is considered not subject to the Dangerous Goods Regulations However this must be declared when shipping When sending the ATC 125 please mark the package and the shipping papers with this text NOT RESTRICTED SPECIAL PROVISION A103 Note If the software detects an error during operation the error will be shown in the display Make a note of the error message and contact your dis...

Page 69: ..._____________ Temp Sensor Service request This instrument is sent for calibration input please tick off ___ Calibration as left ___ Check ___ Calibration as found and as left ___ Service ___ Accredited calibration as left ___ Repair ___ Accredited calibration as found and as left ___________________________________________________________________ Diagnosis data cause for return Diagnosis Fault des...

Page 70: ...fibres on the insertion tube when it is inserted in the well The fibres may adhere to the well and damage it If the calibrator has reached a temperature below 0 C 32 F ice crystals may form on the insertion tube This in turn may cause verdigris to form on the material To prevent this from happening the insertion tube must be dried This is done by heating up the calibrator to min 100 C 212 F and an...

Page 71: ...ost expansion damages The stirring magnet and sensor basket ATC 140 250 A B only When removed from the calibrator the items must be cleaned thoroughly with dry disposable paper towels to avoid spilling of fluid Drops of silicone oil can be removed using a special cleaning oil The sensor under test ATC 140 250 A B only When removed from the calibrator the sensor must be cleaned thoroughly with dry ...

Page 72: ...lues of the sensor can be downloaded to the calibrator B versions only section 7 2 7 DTI Sensor Use this feature to manage the coefficients of the sensors in an AMETEK Digital Temperature Indicator DTI instrument 7 2 1 Introduction to AmeTrim ATC Software This software is supplied on the AmeCal Temperature CD ROM It can be run directly from this CD ROM and requires no special installation It is po...

Page 73: ...aution 1 Ensure that both the PC and the calibrator are switched off at the mains Failure to do so may result in your equipment being damaged 2 Connect the serial cable provided to the RS232 port on the front of the calibrator and to the COM port on the PC 3 Switch on the PC and the calibrator 7 2 4 Starting the AmeTrim ATC Software Note Before starting this software the PC and the calibrator must...

Page 74: ...o the PC and reads its serial number This information plus the COM port the calibrator is connected to is displayed at the bottom of the AmeTrim ATC window If the calibrator is not switched on or is not one of the models covered by this manual then the software closes automatically Note When software is used to control the calibrator the calibrator s keyboard is disabled and the display indicates ...

Page 75: ...calibration and adjustment of the internal sensor The calibrated reference sensor should then be connected to the reference input Using a Digital Temperature Indicator DTI AmeTrim ATC can read the TRUE temperature from the DTI and also make a fully automatic calibration and adjustment of the internal sensor The DTI must be connected to a vacant serial COM port See fig 11 Using any other reference ...

Page 76: ...76 23 03 2009 105446 06 Fig 11 In AmeTrim ATC main menu click Temperature adjustment 7 1 4 8 2 5 0 9 3 6 i ES C _ F1 F3 F4 F5 F2 C AL I BR AT IO N IN S TR UME N TS RS232 cable Computer DTI Sensor ...

Page 77: ...nd measurement followed by and adjustment of the sensor and a final As Left calibration after the adjustment After the calibration measurement reports on both calibrations can be printed Enter the ambient temperature and the operator initials These are to be used on the printed measurement reports Ensure that the precision thermometer is positioned correctly and ready to measure the temperatures C...

Page 78: ...librator type determines the range of these steps When using the external reference sensor input on the calibrator or when using a DTI the calibration and adjustment will now run automatically Adjusting with manual inputs If manual inputs is selected in the adjustment Scenario menu the calibration will be performed in a little different way Enter the data to be used on the printed measurement repo...

Page 79: ...precision thermometer Click OK The READ temperature measured by the calibrator and the TRUE value are entered in the table The calibrator now starts working towards the next temperature level Repeat these steps until READ and TRUE values have been entered for each temperature step Click Calculate to provide a new set of calibration coefficients for the calibrator ...

Page 80: ...erature adjustment option 7 2 6 Input Adjustment B versions only This option allows you to check the accuracy of the calibrator s electrical inputs for B versions only see fig 6 In addition to the equipment already described in sections 7 2 1 and 7 1 3 you also require a calibrated reference signal source For Cold Junction compensation you will also require a stable temperature source for example ...

Page 81: ... compensation N type thermocouple and a reference junction for example an ice bath Note that Cold Junction compensation is only possible when Measure Adjust Calibrate is selected The number and type of electrical inputs to be checked is user definable You can also define if you want to check the inputs by just measuring them or to measure adjust and then calibrate the electrical inputs Cold Juncti...

Page 82: ...ption and returns to the Main Menu In AmeTrim ATC main menu click Input adjustment By clicking the Calibration Date button you can view the last calibration dates for each of the inputs Container with ice 0 C reference Principle sketch 7 1 4 8 2 5 0 9 3 6 i ES C _ F1 F3 F4 F5 F2 CAL I BRA TIO NI N S TR UM EN TS ...

Page 83: ...t s when prompted Click Start and follow the instructions on screen The software starts measuring the first of the selected inputs Ensure that the correct reference signal source is connected when prompted When all the selected inputs have been measured a new dialogue appears Type a unique name for the measurements Click As found and ensure that the date is correct This information will appear in ...

Page 84: ...Input is calibrated Click the radio button Measure Adjust Calibrate Use the check box list to select the inputs to be measured If you have selected more than one check box the measurements occur in the same order as they appear in the check box list Connect the reference signal source to the appropriate input s when prompted Click Start and follow the instructions on screen Each input has several ...

Page 85: ...ort Note These results are not saved electronically If you require a record of these measurements click Print while the report is displayed When you are finished viewing or printing the report click Close This returns you to the first dialogue in the Temperature adjustment option If you do not require any further measurements click Done to return to the Main Menu 7 2 7 Reference Sensor This option...

Page 86: ...re units To view current values in the Calibrator Click Upload values The current reference sensor values stored in the calibrator are displayed Click Done when you are finished viewing the values This returns you to the AmeTrim ATC Main Menu To enter values for a new reference sensor Type in a unique and descriptive name for the reference sensor Use the mouse to position the pointer in the boxes ...

Page 87: ...s are downloaded they overwrite the ones stored in the calibrator Default values This option downloads a set of default values which are stored in the AmeTrim ATC software 7 2 8 Managing DTI sensor coefficients This dialog enables you to type in coefficient values for the reference sensor connected to the DTI Note These coefficients are not saved Therefore they must be typed in and downloaded when...

Page 88: ...he values click Download Default values can be selected by using The Default button 7 2 9 Setup Printer This option provides a standard Windows procedure which enables you to edit the settings for the current printer or change to another printer If you are unsure how to use these settings refer to your Windows Help ...

Page 89: ...hnical specifications The illustration below shows the setup that forms the basis for the technical specifications for dry block calibrators Fig 13 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F 4 F 5 F2 CA LI BR A T IO N IN ST R UM EN TS 4 5 3 ...

Page 90: ...446 06 The illustration below shows the setup that forms the basis for the technical specifications for liquid bath calibrators Fig 14 7 1 4 8 2 5 0 9 3 6 i ESC _ F1 F3 F4 F5 F2 CA LIBRA TI ON IN ST RUMEN TS 1 6 4 2 3 5 ...

Page 91: ...105446 06 23 03 2009 91 The illustration below shows the setup that forms the basis for the technical specifications for cooling calibrators Fig 15 5 6 3 4 CA LIBR AT ION INST RU ME NT S ...

Page 92: ...ion liquid bath calibrators fig 14 Calibrator Stirring magnet Sensor basket Lid for calibration Ø4 mm Pt 100 sensor with traceable certificate DTI 1000 reference precision thermometer with traceable certificate Pos Description cooling calibrators fig 15 Calibrator Ø4 2 mm insertion tube Insulation plug EPDM plug for insulation plug Ø4 mm Pt 100 sensor with traceable certificate DTI 1000 reference ...

Page 93: ...g 41 45 lb ATC 140 A 12 7 kg 28 0 lb ATC 140 B 12 8 kg 28 2 lb ATC 156 A 12 1 kg 26 7 lb ATC 156 B 12 2 kg 26 9 lb ATC 157 A 13 0 kg 28 7 lb ATC 157 B 13 1 kg 28 9 lb ATC 250 A 10 7 kg 23 6 lb ATC 250 B 10 8 kg 23 8 lb ATC 320 A 10 1 kg 22 3 lb ATC 320 B 10 2 kg 22 5 lb ATC 650 A 12 0 kg 26 5 lb ATC 650 B 12 1 kg 26 7 lb Bore diameter depth of well ATC 140 A B ø63 8 mm 160 mm ø2 5 inch 6 3 inch AT...

Page 94: ...320 650 A B 1150 VA RS232 COMMUNICATION INTERFACE Type of connection 9 pole D sub male OTHER CONNECTIONS Syncronisation relay output 3 5 mm mini jack ENVIRONMENT Ambient operating temperature range 0 40 C 32 104 F Storage temperature range 20 50 C 4 122 F Humidity range 0 90 RH Protection class IP10 READOUT SPECIFICATIONS Resolution 0 01 C 0 01 F 0 01 K Temperature units C F K THERMAL SPECIFICATIO...

Page 95: ... 05 C 0 09 F 125 C 257 F 0 05 C 0 09 F 23 C 73 4 F 0 15 C 0 27 F 90 C 130 F 70 mm 2 76 inch axial homogeneity 0 05 C 0 09 F 125 C 257 F 0 05 C 0 09 F 23 C 73 4 F 0 20 C 0 36 F 90 C 130 F 80 mm 3 15 inch axial homogeneity 0 05 C 0 09 F 125 C 257 F 0 05 C 0 09 F 23 C 73 4 F 0 40 C 0 72 F 90 C 130 F Difference between borings 0 01 C 0 018 F 125 C 257 F 0 03 C 0 054 F 90 C 130 F Influence from load 0 ...

Page 96: ... to 23 C 73 4 F 15 min 23 C 73 4 F to 125 C 257 F 13 min 90 C 130 F to 125 C 257 F 28 min Time to stability 10 min Cooling time incl insert 125 C 257 to 100 C 212 F 12 min 100 C 212 to 23 C 73 4 F 28 min 23 C 73 4 F to 45 C 49 F 40 min 45 C 49 F to 80 C 112 F 35 min 80 C 112 F to 90 C 130 F 30 min 125 C 257 to 90 C 130 F 130 min Refrigerants R704 Helium 8g R1270 Propylene 10g THERMAL SPECIFICATION...

Page 97: ...2 76 inch axial homogeneity 0 15 C 0 27 F 140 C 284 F 0 10 C 0 18 F 20 C 4 F 80 mm 3 15 inch axial homogeneity 0 20 C 0 36 F 140 C 284 F 0 10 C 0 18 F 20 C 4 F Difference between borings 0 05 C 0 09 F 140 C 284 F 0 03 C 0 54 F 20 C 4 F Influence from load 0 15 C 0 27 F 140 C 284 F 0 06 C 0 11 F 20 C 4 F Influence from load with Ext Reference 0 04 C 0 07 F 140 C 284 F 0 04 C 0 07 F 20 C 4 F Long te...

Page 98: ...ty 15 min Cooling time incl insert 140 C 284 F to 23 C 73 4 F 34 min 140 C 284 F to 100 C 212 F 7 min 100 C 212 F to 23 C 73 4 F 27 min 23 C 73 4 F to 15 C 5 F 52 min 23 C 73 4 F to 20 C 4 F 95 min 23 C 73 4 F to 0 C 32 F 17 min 0 C 32 F to 15 C 5 F 35 min 0 C 32 F to 20 C 4 F 78 min 140 C 284 F to 20 C 4 F 129 min THERMAL SPECIFICATIONS LIQUID BATHS ATC 140 A B Maximum temperature 140 C 284 F Min...

Page 99: ...2 76 inch axial homogeneity 0 10 C 0 18 F 140 C 284 F 0 05 C 0 09 F 20 C 4 F 80 mm 3 15 inch axial homogeneity 0 15 C 0 27 F 140 C 284 F 0 10 C 0 18 F 20 C 4 F Radial homogeneity 0 025 C 0 045 F Influence from load 0 10 C 0 18 F 140 C 284 F 0 03 C 0 05 F 20 C 4 F Influence from load with Ext Reference 0 02 C 0 04 F 140 C 284 F 0 02 C 0 04 F 20 C 4 F Difference between insert oil 0 20 C 0 36 F Long...

Page 100: ...0 C 0 18 F Total accuracy std cal with insert 0 30 C 0 54 F Time to stability 15 min THERMAL SPECIFICATIONS ATC 156 A B Maximum temperature 155 C 311 F Minimum temperature 40 C 40 F ambient temperature 0 C 32 F 24 C 11 2 F ambient temperature 23 C 73 4 F 12 C 10 4 F ambient temperature 40 C 104 F ...

Page 101: ...16 F 24 C 11 2 F 60 mm 2 36 inch axial homogeneity 0 10 C 0 18 F 155 C 311 F 0 06 C 0 11 F 100 C 212 F 0 08 C 0 14 F 0 C 32 F 0 12 C 0 22 F 24 C 11 2 F 70 mm 2 76 inch axial homogeneity 0 13 C 0 23 F 155 C 311 F 0 08 C 0 14 F 100 C 212 F 0 10 C 0 18 F 0 C 32 F 0 16 C 0 29 F 24 C 11 2 F 80 mm 3 15 inch axial homogeneity 0 18 C 0 32 F 155 C 311 F 0 11 C 0 20 F 100 C 212 F 0 11 C 0 20 F 0 C 32 F 0 25...

Page 102: ...curacy 0 02 C 0 04 F Total accuracy 0 10 C 0 18 F Heating time incl insert 24 C 11 2 F to 23 C 73 4 F 4 min 23 C 73 4 F to 100 C 212 F 9 min 23 C 73 4 F to 155 C 311 F 19 min 100 C 212 F to 155 C 311 F 10 min 24 C 11 2 F to 155 C 311 F 23 min Time to stability 7 min Cooling time incl insert 155 C 311 F to 100 C 212 F 4 min 155 C 311 F to 23 C 73 4 F 13 min 100 C 212 F to 23 C 73 4 F 9 min 23 C 73 ...

Page 103: ...09 103 THERMAL SPECIFICATIONS ATC 157 A B Maximum temperature 155 C 311 F Minimum temperature 57 C 70 6 F ambient temperature 0 C 32 F 45 C 49 F ambient temperature 23 C 73 4 F 31 C 23 8 F ambient temperature 40 C 104 F ...

Page 104: ... 13 F 0 C 32 F 0 17 C 0 31 F 35 C 31 F 0 18 C 0 32 F 45 C 49 F 60 mm 2 36 inch axial homogeneity 0 10 C 0 18 F 155 C 311 F 0 06 C 0 11 F 100 C 212 F 0 10 C 0 18 F 0 C 32 F 0 20 C 0 36 F 35 C 31 F 0 25 C 0 45 F 45 C 49 F 70 mm 2 76 inch axial homogeneity 0 15 C 0 27 F 155 C 311 F 0 08 C 0 14 F 100 C 212 F 0 15 C 0 27 F 0 C 32 F 0 30 C 0 54 F 35 C 31 F 0 37 C 0 67 F 45 C 49 F 80 mm 3 15 inch axial h...

Page 105: ...C 32 104 F Stability 0 01 C 0 02 F Reference accuracy 0 02 C 0 04 F Total accuracy 0 13 C 0 23 F Heating time incl insert 45 C 49 F to 23 C 73 4 F 6 min 23 C 73 4 F to 100 C 212 F 8 min 100 C 212 F to 155 C 311 F 9 min 23 C 73 4 F to 155 C 311 F 17 min 45 C 49 F to 155 C 311 F 23 min Time to stability 6 min Cooling time incl insert 155 C 311 to 100 C 212 F 3 min 155 C 311 F to 23 C 73 4 F 9 min 10...

Page 106: ... 06 THERMAL SPECIFICATIONS DRY BLOCK ATC 250 A B Maximum temperature 250 C 482 F Minimum temperature 5 C 41 F ambient temperature 0 C 32 F 28 C 82 F ambient temperature 23 C 73 4 F 45 C 113 F ambient temperature 40 C 104 F ...

Page 107: ...m 2 36 inch axial homogeneity 0 25 C 0 45 F 250 C 482 F 0 15 C 0 27 F 140 C 284 F 0 05 C 0 09 F 50 C 122 F 70 mm 2 76 inch axial homogeneity 0 40 C 0 72 F 250 C 482 F 0 20 C 0 36 F 140 C 284 F 0 05 C 0 09 F 50 C 122 F 80 mm 3 15 inch axial homogeneity 0 50 C 0 90 F 250 C 482 F 0 25 C 0 45 F 140 C 284 F 0 05 C 0 09 F 50 C 122 F Difference between borings 0 05 C 0 09 F Influence from load 0 25 C 0 4...

Page 108: ...ert 28 C 82 F to 100 C 212 F 3 min 50 C 122 F to 100 C 212 F 2 min 100 C 212 F to 250 C 482 F 9 min Time to stability 15 min Cooling time incl insert 250 C 482 F to 100 C 212 F 27 min 100 C 212 F to 50 C 122 F 27 min 100 C 212 F to 28 C 82 F 55 min THERMAL SPECIFICATIONS LIQUID BATHS ATC 250 A B Maximum temperature 250 C 482 F Minimum temperature 10 C 50 F ambient temperature 0 C 32 F 33 C 91 F am...

Page 109: ... 36 inch axial homogeneity 0 04 C 0 07 F 250 C 482 F 0 04 C 0 07 F 140 C 284 F 0 04 C 0 07 F 50 C 122 F 70 mm 2 76 inch axial homogeneity 0 05 C 0 09 F 250 C 482 F 0 05 C 0 09 F 140 C 284 F 0 04 C 0 07 F 50 C 122 F 80 mm 3 15 inch axial homogeneity 0 10 C 0 18 F 250 C 482 F 0 05 C 0 09 F 140 C 284 F 0 04 C 0 07 F 50 C 122 F Difference between borings 0 025 C 0 045 F Influence from load 0 10 C 0 18...

Page 110: ...t 0 50 C 0 90 F Heating time incl insert 28 C 82 F to 100 C 212 F 3 min 50 C 122 F to 100 C 212 F 2 min 100 C 212 F to 250 C 482 F 9 min Time to stability 15 min Cooling time incl insert 250 C 482 F to 100 C 212 F 27 min 100 C 212 F to 50 C 122 F 27 min 100 C 212 F to 28 C 82 F 55 min THERMAL SPECIFICATIONS ATC 320 A B Maximum temperature 320 C 608 F Minimum temperature 10 C 50 F ambient temperatu...

Page 111: ...0 C 0 18 F 155 C 311 F 0 05 C 0 09 F 100 212 F 0 05 C 0 09 F 50 C 122 F 60 mm 2 36 inch axial homogeneity 0 20 C 0 36 F 320 C 608 F 0 10 C 0 18 F 155 C 311 F 0 10 C 0 18 F 100 C 212 F 0 05 C 0 09 F 50 C 122 F 70 mm 2 76 inch axial homogeneity 0 30 C 0 54 F 320 C 608 F 0 15 C 0 27 F 155 C 311 F 0 10 C 0 18 F 100 C 212 F 0 05 C 0 09 F 50 C 122 F 80 mm 3 15 inch axial homogeneity 0 40 C 0 72 F 320 C ...

Page 112: ...C 0 18 F Temperature coefficient 5ppm C 0 40 C 32 104 F Stability 0 01 C 0 18 F Reference accuracy 0 06 C 0 11 F Total accuracy 0 20 C 0 36 F Heating time incl insert 50 C 122 F to 320 C 608 F 7 min Time to stability 10 min Cooling time incl insert 320 C 608 F to 100 C 212 F 22 min 320 C 608 F to 50 C 122 F 42 min THERMAL SPECIFICATIONS ATC 650 A B Maximum temperature 650 C 1202 F Minimum temperat...

Page 113: ...0 09 F 50 C 122 F 60 mm 2 36 inch axial homogeneity 1 00 C 1 80 F9 650 C 1202 F 0 40 C 0 72 F 320 C 608 F 0 10 C 0 18 F 100 C 212 F 0 10 C 0 18 F 50 C 122 F 70 mm 2 76 inch axial homogeneity 1 40 C 2 52 F 650 C 1202 F 0 70 C 1 26 F 320 C 608 F 0 25 C 0 45 F 100 C 2 2 F 0 10 C 0 18 F 100 C 122 F 80 mm 3 15 inch axial homogeneity 2 00 C 3 60 F 650 C 1202 F 0 90 C 1 62 F 320 C 608 F 0 35 C 0 63 F 100...

Page 114: ...10 min Cooling time incl insert 650 C 1202 F to 100 C 212 F 43 min 650 C 1202 F to 50 C 122 F 68 min STANDARDS The following standards are observed according to the EMC directive 89 336 EN61326 1997 A1 1998 Electrical equipment for measurement control and laboratory use EMC requirements The following standards are observed according to the low voltage directive 73 23 ATC 156 157 320 650 A B only E...

Page 115: ...racy 0 005 of rdg 0 015 of F S Temperature coefficient 5 ppm C 0 40 C 32 104 F Input impedance 1 MΩ Type of connection 4 mm safety sockets Thermocouple input Signal range 78mV 78 mV Resolution 0 001mV 0 01 C 0 01 F Accuracy 0 010 of rdg 0 005 of F S see page 116 118 for accuracy in C F Temperature coefficient 5 ppm C 0 40 C 32 104 F Input impedance 1 MΩ Type of connection Mini TC connector RTD inp...

Page 116: ...al power supply Measuring current 0 8 mA Resolution 0 001 0 01 C 0 01 F Accuracy 0 001 of rdg 0 002 of F S see page 120 for accuracy in C F Temperature coefficient 5 ppm C 0 40 C 32 104 F Type of connection LEMO connector INPUT SPECIFICATIONS ACCURACY IN C F Accuracy thermocouple type E input excluding sensor accuracy 0 10 C 0 17 F 90 C 130 F 0 08 C 0 14 F 50 C 58 F 0 07 C 0 12 F 0 C 32 F 0 07 C 0...

Page 117: ...22 F 50 C 58 F 0 10 C 0 18 F 0 C 32 F 0 09 C 0 16 F 155 C 311 F 0 09 C 0 17 F 320 C 608 F 0 10 C 0 17 F 400 C 752 F Accuracy thermocouple type R input excluding sensor accuracy 1 31 C 2 35 F 50 C 58 F 0 78 C 1 40 F 0 C 32 F 0 50 C 0 90 F 155 C 311 F 0 42 C 0 75 F 320 C 608 F 0 41 C 0 74 F 650 C 1202 F 0 50 C 0 90 F 1760 C 3200 F Accuracy thermocouple type S input excluding sensor accuracy 0 98 C 1...

Page 118: ...3 F 320 C 608 F 0 11 C 0 19 F 650 C 1202 F 0 12 C 0 22 F 800 C 1472 F Accuracy thermocouple type U excluding sensor accuracy 0 16 C 0 29 F 90 C 130 F 0 12 C 0 21 F 50 C 58 F 0 10 C 0 18 F 0 C 32 F 0 09 C 0 17 F 155 C 311 F 0 09 C 0 17 F 320 C 608 F 0 10 C 0 19 F 600 C 1112 F Accuracy thermocouple type L excluding sensor accuracy 0 08 C 0 14 F 50 C 58 F 0 08 C 0 14 F 0 C 32 F 0 08 C 0 14 F 155 C 31...

Page 119: ...C 0 092 F 90 C 130 F 0 054 C 0 097 F 50 C 58 F 0 058 C 0 104 F 0 C 32 F 0 069 C 0 124 F 155 C 311 F 0 079 C 0 142 F 320 C 608 F 0 106 C 0 191 F 650 C 1202 F 0 112 C 0 202 F 700 C 1292 F Accuracy RTD Pt50 excluding sensor accuracy 0 095 C 0 171 F 90 C 130 F 0 098 C 0 176 F 50 C 58 F 0 103 C 0 185 F 0 C 32 F 0 116 C 0 209 F 155 C 311 F 0 128 C 0 230 F 320 C 608 F 0 161 C 0 290 F 650 C 1202 F 0 169 C...

Page 120: ...cluding sensor accuracy 0 087 C 0 157 F 90 C 130 F 0 090 C 0 162 F 50 C 58 F 0 093 C 0 167 F 0 C 32 F 0 100 C 0 180 F 150 C 302 F Accuracy Pt100 reference input excluding sensor accuracy 0 019 C 0 034 F 90 C 130 F 0 020 C 0 036 F 50 C 58 F 0 021 C 0 038 F 0 C 32 F 0 023 C 0 041 F 155 C 311 F 0 024 C 0 043 F 225 C 437 F 0 026 C 0 047 F 320 C 608 F 0 028 C 0 050 F 425 C 797 F 0 032 C 0 058 F 650 C 1...

Page 121: ... Tool for insertion tube 60F170 Heat shield 105496 Carrying case 105805 Carrying case ATC 125 only 126304 Mains cable 115V US type B 60F135 Mains cable 240V UK type C 60F136 Mains cable 220V South Africa type D 60F137 Mains cable 220V Italy type E 60F138 Mains cable 240V Australia type F 60F139 Mains cable 230V Europe type A 60F140 Mains cable 230V Denmark type G 60F141 Mains cable 220V Switzerlan...

Page 122: ...kit ATC 157 123374 Calibration accessories kit BASIC ATC 156 122833 Calibration accessories kit BASIC ATC 157 123685 Calibration accessories kit BASIC ATC 320 650 122834 Liquid bath kit ATC 140 125022 Liquid bath kit ATC 250 125035 Dry block kit metric ATC 140 125023 Dry block kit inch ATC 140 125024 Dry block kit metric ATC 250 125025 Dry block kit inch ATC 250 125026 Silicone oil for ATC 140 0 7...

Page 123: ...676 105678 105680 105682 105684 105686 105688 105690 105692 124899 124891 PARTS NO FOR STANDARD INSERTION TUBES Sensor size ATC 125 156 A B Aluminium tubes ATC 157 A B Aluminium tubes ATC 320 650 A B Brass tubes 3 mm 4 mm 5 mm 6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 105623 105625 105627 105629 105631 105633 105635 105637 105639 105641 105643 105645 105647 105649 123270 123271...

Page 124: ... 122755 122757 123294 123295 123296 122750 122752 122754 122756 124897 124889 PART NO FOR STANDARD INSERTION TUBES MULTI HOLE Descrip tion inch ATC 125 A B ATC 156 A B ATC 157 A B ATC 320 650 A B ATC 140 A B ATC 250 A B Type 2 Type 4 Type 5 Type 6 126276 126277 122759 122761 123297 123298 122758 122760 124898 124890 NOTE All multi hole insertion tubes metric and inches for ATC 125 140 156 157 are ...

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