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Summary of Contents for Ametek JOFRA ITC-320 A
- Page 1 Reference Manual Temperature Calibrator JOFRA ITC-155/320/650 A Copyright 2002 AMETEK DENMARK A/S...
- Page 2 The structure of the manual This reference manual is aimed at users who are familiar with Ametek calibrators, as well as those who are not. The manual is divided into 10 chapters which describe how to set up, operate, service and maintain the calibrator. The technical specifications are described and accessories may be ordered from the list of accessories.
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Page 3: Table Of Contents
List of contents Introduction ................4 Safety instructions ..............6 Setting up the calibrator ............11 3.1 Receipt of the calibrator.............. 11 3.2 Preparing the calibrator .............. 13 3.3 Choice of insertion tube .............. 14 3.4 Inserting the sensor ..............16 Operating the calibrator............19 4.1 Keyboard, display and connections.......... -
Page 4: Introduction
Congratulations on your new Ametek Jofra ITC Calibrator! With the Ametek Jofra calibrator, you have chosen an extremely effective instrument which we hope will live up to all your expectations. Over the past many years, we have acquired extensive knowledge of industrial temperature calibration. - Page 5 CE-label Your new calibrator bears the CE label 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. Guarantee According to current terms of sale and delivery. This guarantee only covers defects in manufacture and becomes void if the instrument has been subject to unauthorised intervention and/or misuse.
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Page 6: Safety Instructions
Safety instructions Read this manual carefully before using the instrument! Please follow the instructions and procedures described in this manual. They are designed to allow you to get the most out of your calibrator and avoid any personal injuries and/or damage to the instrument. - Page 7 About insertion tubes and insulation plugs: • Never leave 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 to a temperature below 100°C/212°F before placing it in the carrying case.
- Page 8 Caution – Hot surface This symbol is engraved in the grid plate. • Do not touch the grid plate, the well or the insertion tube as the calibrator is heating up – they may be very hot. • Do not touch the tip of the sensor when it is removed from the insertion tube/well –...
- Page 9 Caution… About the use: • Do not use the instrument if the ventilator is out of order • Before cleaning the calibrator, you must switch it off, allow it to cool down and remove all cables. About the well, insertion tube and grid plate: •...
- Page 10 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 maintenance instructions set out in this manual or uses unauthorised spare parts. 17-08-2004 123312...
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Page 11: Setting Up The Calibrator
Setting up the calibrator Receipt of the calibrator When you receive the instrument… • Carefully unpack and check the calibrator and the accessories. • Check the parts off against the list shown below. If any of the parts are missing or damaged, please contact the dealer who sold the calibrator. - Page 12 • 1 tool for insertion tube • 1 traceable certificate • 1 reference manual Reference Manual • 1 user manual User Manual • 1 RS 232 serial cable • 1 CD-ROM containing software package “JofraCal”. When reordering, please specify the parts number found in the list of accessories, section 10.0.
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Page 13: Preparing The Calibrator
Preparing the calibrator Warning • The calibrator must not be used in areas prone to explosives hazards. • The calibrator must be kept clear within an area of 20 cm on all sides and 1 metre above the calibrator. Note… The instrument must not be exposed to draughts. -
Page 14: Choice Of Insertion Tube
Caution… Do not use the instrument if the ventilator is out of order Ensure a free supply of air to the ventilator located at the bottom of the instrument. Check the voltage of the power control switch (on/off switch (230V/115V)). If the voltage of the power control switch differs from the line voltage, you must adjust the voltage of the power control switch as follows (see Fig. - Page 15 Insertion tubes are selected on the basis of the diameter of the sensor to be calibrated. Use the table for insertion tubes in section 10.0 to find the correct part number. Alternatively, you may order an undrilled insertion tube and drill the required hole yourself.
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Page 16: Inserting The Sensor
Inserting the sensor Before inserting the sensor and switching on the calibrator, please note the following important warning: Warning • Never use heat transfer fluids such as silicone, oil, paste, etc. These fluids may penetrate the calibrator and cause damage or create poisonous fumes. Insert the sensor as shown in Fig. - Page 17 Sensor under test Insertion tube Thermal protection shield Fig. 3 Caution… • The well and 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.
- Page 18 Caution – Hot surface • Do not touch the grid plate, the well or the insertion tube as the calibrator is heating up – they may be very hot. • Do not touch the tip of the sensor when it is removed from the insertion tube/well –...
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Page 19: Operating The Calibrator
Operating the calibrator Keyboard, display and connections Keyboard CALIBRATION INSTRUMENTS SWITCH AUTO TEST STEP MENU Fig. 4 Pos. Description LCD. SWITCH TEST button used to activate SWITCH TEST. The function automatically detects the opening/closing temperatures for thermostats. AUTO STEP button used to activate AUTO STEP. The function is used to switch between a series of set- temperatures automatically. - Page 20 UP ARROW button used to adjust temperature values (value increases) and to select menu options. Display Fig. 5 Pos. Description CHECKMARK displayed when the calibrator is stable. SWITCH TEST input open. SWITCH TEST input closed. AUTO STEP symbol used to indicate that the function is active (symbol flashes repeatedly).
- Page 21 Celsius temperature unit for top display. Used to display Read-temperature and parameters in the menu system. Connections Warning • The switch-test connectors, pos. 2 on the front panel, must NEVER be connected to a voltage source. • Thermostats must not be connected to any other voltage source during a test.
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Page 22: Starting The Calibrator
Starting the calibrator Switch the calibrator on using the power control switch (pos. 1 in Fig. 6). The instrument is initialised and the last calibration date is displayed: The calibration date will be displayed for approx. 2 seconds. The initialisation process has been completed and the calibrator is ready for use. - Page 23 The calibrator will now heat up/cool down. The top display continuously shows the read-temperature. The bottom display shows either the set-temperature or the estimated time in whole minutes until the calibrator will be stable: °C When the calibrator is stable the display will show the checkmark symbol.
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Page 24: Using The Switch Test
Using the SWITCH TEST SWITCH TEST automatically locates the switch temperature of a thermostat. You must enter a temperature range T , within which the switch temperature is expected to be found. You must also specify the slope rate to be used during the test in SETUP (the smaller the value, the more accurate the results of the test and the longer the test will take). - Page 25 Press to select the required T °C Press to accept your selection. Press to select the required T °C Press to accept your selection. The calibrator will now start working towards the T °C °C Once the T has been reached and the calibrator is stable, the instrument will emit an audible alarm and display the status for one second: °C...
- Page 26 The calibrator will now start working towards the T using the slope rate selected in SETUP. The flashing SWITCH TEST symbol indicates the current status: °C °C The instrument will check for changes in the SWITCH TEST. If no change has been detected by the time T is reached, the instrument will register an ERROR.
- Page 27 Press to display the hysteresis temperature: °C If a temperature has not been found, the instrument will display an “Error” (the “Hyste” temperature will also be shown as an “Error”): Press to end the SWITCH TEST. The instrument will store the T and T until the next time the SWITCH TEST is activated.
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Page 28: Using The Auto Step
Using the AUTO STEP AUTO STEP is used to step automatically between a range of different calibration temperatures. This is useful when calibrating sensors in places which are hard to reach, and when calibrating sensors for which the output is displayed in a different location. The function can be illustrated using the following example: Fig. - Page 29 Press to select the required number of steps (minimum 2 steps, maximum 9 steps): Press to accept your selection. Press to select the required set-temperature for step 1: °C Press to accept your selection. Repeat the above procedure for all temperature steps. Press to accept your choices once you have adjusted the last temperature step.
- Page 30 The following will be displayed for one second to indicate that the calibrator is ready to work towards the set-temperature: °C The calibrator will now work towards the given set-temperature. An audible alarm will be emitted once the calibrator is stable. The calibrator will wait the specified amount of extra time.
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Page 31: Using The Menu
Using the MENU Hold down for more than approx. 2 seconds: Press to select SETUP. Press to switch between the adjustable parameters: ⇑⇓ ⇑⇓ ⇑⇓ ⇑⇓ 123312 03 17-08-2004... -
Page 32: Adjusting The Temperature Unit
If you wish to exit SETUP, simply press The instrument will ignore all changes if you press when adjusting any of the parameters. Press to adjust the parameter. 4.6.1 Adjusting the temperature unit Press to switch between °C and °F: °C - and °F... -
Page 33: Adjusting The Max-Temperature
4.6.2 Adjusting the max-temperature Press to set the max-temperature in steps of 0.1°C or 0.1°F: °C If the current set-temperature is higher than the new max- temperature, you will need to adjust the set-temperature. The instrument will immediately begin to cool (if required) as soon as the new max-temperature is accepted. -
Page 34: Adjusting The Extra Stability Time
4.6.4 Adjusting the extra stability time The extra stability time is the amount of extra time you wish to elapse before the checkmark symbol is displayed after the calibrator has stabilised. Press to set the time to anywhere between 0 and 20 minutes: Press to accept your selection. -
Page 35: Simulation/Training
Simulation/training Hold down the buttons while you switch on the calibrator. The instrument will display the following screen: The instrument will then revert to the standard display. The calibrator’s simulation mode is used to train personnel in the use of the instrument, etc. The simulation setting differs from the standard setting as follows: •... -
Page 36: Storing And Transporting The Calibrator
Storing and transporting the calibrator Caution… The following guidelines should always be observed when storing and transporting the calibrator. This will ensure that the instrument and the sensor remain in good working order. Switch off the calibrator using the power control switch. Note that the calibration procedure may be interrupted at any time using the power control switch. - Page 37 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 ITC-155 A models) If the calibrator has reached a temperature below 0°C/32°F, ice crystals may form on the insertion tube and the well.
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Page 38: Errors
• non-original parts are used in any way when operating the instrument. Ametek Denmark’s liability is restricted to errors which originated from the factory. If the calibrator detects an error during operation, the instrument will terminate all functions and display an error code:... - Page 39 Likely cause: An error has occurred in the control circuit. Solution: The calibrator should be returned to the manufacturer for service. Nothing happens when the power control switch (on/off switch) is pressed. Likely cause: There is no power to the calibrator. Solution: Check that the calibrator is correctly connected.
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Page 40: Setting The Main Voltage And Replacing The Fuses
Setting the main voltage and replacing the fuses Warning • The fuse box must not be removed from the power control switch until the mains cable has been disconnected. • The two main fuses must be identical and correspond to the chosen voltage. -
Page 41: Returning The Calibrator For Service
Remove both fuses and insert two new fuses. These must be identical and should correspond to the line voltage. • ITC-155: 115V, 2AT = 105014 / 230V, 1AT = 105007 • ITC-320/650: 115V, 10AF = 60B302 / 230V, 5AF = 60B301 If the fuses blow immediately after you have replaced them, the calibrator should be returned to the manufacturer for service. - Page 42 Special requests:_____________________________________________________ ___________________________________________________________________ Safety precautions: if the product has been exposed to any hazardous substances, it must be thoroughly decontaminated before it is returned to Ametek. Details of the hazardous substances and any precautions to be taken must be enclosed. 17-08-2004...
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Page 43: Maintenance
Maintenance Cleaning Caution… Before cleaning the calibrator, you must switch it off, allow it to cool down and remove all cables. Users should/must carry out the following cleaning procedures as and when required: • The exterior of the instrument - Clean using water and a soft cloth. -
Page 44: Adjusting And Calibrating The Instrument
Adjusting and calibrating the instrument You are advised to return the calibrator to Ametek Denmark A/S or an accredited laboratory at least once a year for calibration and adjustment. Alternatively, you can calibrate/adjust the calibrator yourself. You will need a reference thermometer and a reference sensor with a traceable certificate. - Page 45 Press to toggle between the different options: ⇑⇓ ⇑⇓ ⇑⇓ Press to accept your selection. To exit the adjustment/service mode, switch the instrument off and on again using the power control switch. 123312 03 17-08-2004...
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Page 46: Adjusting The Calibration Date
8.2.1 Adjusting the calibration date Adjust the date by toggling through the available days, months and years. Begin by selecting the required day as shown below: Press to select the required day in the interval 1- Press to accept your selection. Press to select the required month from JAN / FEB / MAR / APR / MAY / JUN / JUL / AUG / SEP /... -
Page 47: Calibrating/Adjusting The Instrument
Press to accept your selection. The day will be adjusted if necessary to ensure the legality of the date. Finally, the day, month and year will flash: Press to accept the date. press to cancel the whole selection. 8.2.2 Calibrating/adjusting the instrument The internal calibration/adjustment is a complex function which is divided into a number of different steps: The instrument will disclose the first calibration temperature by... - Page 48 ITC-320 A 50°C / 122°F 120°C / 248°F 180°C / 356°F 250°C / 482°F 320°C / 608°F ITC-650 A 50°C / 122°F 200°C / 392°F 350°C / 662°F 500°C / 932°F 650°C / 1202°F The instrument will now heat up/cool down to reach the first calibration temperature: °C °C...
- Page 49 If the instrument detects excessive deviations for one or more steps, it will show a screen reading =ERR. in the top of the display. The text AdJ. will flash in the bottom of the display to indicate that an adjustment is required (accept by pressing If the calibrator is found to be within the permitted tolerances, the instrument will display the text =OK at the top of the display.
- Page 50 If the new coefficients deviate by more than 4% from the standard values, the instrument will display an ERROR 2 in the display. The calculated coefficients will be ignored: Press to repeat the entire calibration/adjustment procedure. Press when Cont. is flashing to end the calibration/adjustment procedure and enter a new calibration date (see section 8.2.1).
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Page 51: Technical Specifications
Technical specifications The illustration below shows the setup which forms the basis for the technical specifications. Fig. 12 123312 03 17-08-2004... - Page 52 Pos. Description Calibrator Ø4.2 mm insertion tube Ø4 mm Pt 100 sensor with traceable certificate DTI 1000 reference precision thermometer with traceable certificate TECHNICAL SPECIFICATIONS – ALL MODELS All specifications are given with an ambient temperature of 23°C/73.4°F ± 3°C/5.4°F GENERAL SPECIFICATIONS MECHANICAL SPECIFICATIONS Dimensions l ×...
- Page 53 RS232 COMMUNICATION INTERFACE Type of connection IEC320 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 0.1°C / 0.1°F Temperature units °C / °F THERMAL SPECIFICATIONS ITC-155 A Maximum temperature 155°C / 311°F...
- Page 54 THERMAL SPECIFICATIONS ITC-155 A 80 mm / 3.15 inch axial homogeneity : 0.8°C / 1.44°F @155°C / 311°F 0.5°C / 0.9°F @-20°C / -4°F Difference between holes : 0.03°C / 0.05°F Influence from load : 0.15°C / 0.27°F @155°C / 311°F 0.10°C / 0.18°F @-20°C / -4°F Influence from load with ext.
- Page 55 THERMAL SPECIFICATIONS ITC-320 A Maximum temperature 320°C / 608°F Minimum temperature 10°C / 50°F @ ambient temperature 0°C / 32°F 33°C / 91°F @ ambient temperature 23°C / 73.4°F 50°C / 122°F@ ambient temperature 40°C / 104°F Well specifications 40 mm / 1.57 inch axial homogeneity : 0.60°C / 1.08°F @320°C / 608°F 0.30°C / 0.54°F @155°C / 311°F 0.10°C / 0.18°F @50°C / 122°F...
- Page 56 THERMAL SPECIFICATIONS ITC-320 A Influence from load : 0.2°C / 0.36°F @320°C / 608°F Influence from load with ext. reference : 0.03°C / 0.05°F @320°C / 608°F Difference between inserts: 0.10°C / 0.18°F Long term drift (1 year) : ±0.10°C / ±0.18°F Calibration accuracy (test limit) ±0.15°C / ±0.27°F Temperature coefficient...
- Page 57 THERMAL SPECIFICATIONS ITC-650 A Well specifications 40 mm / 1.57 inch axial homogeneity : 0.50°C / 122°F @650°C / 1202°F 0.25°C / 0.45°F @320°C / 608°F 0.05°C / 0.09°F @50°C / 122°F 50 mm / 1.97 inch axial homogeneity : 0.85°C / 1.53°F @650°C / 1202°F 0.40°C / 0.72°F @320°C / 608°F 0.07°C / 0.13°F @50°C / 122°F...
- Page 58 THERMAL SPECIFICATIONS ITC-650 A Difference between inserts: 0.25°C / 0.45°F Long term drift (1 year) : ±0.2°C / ±0.36°F Calibration accuracy (test limit) ±0.20°C / ±0.36°F Temperature coefficient 0.05°C/°C (0-40°C) / 0.09°F/°F (32-104°F) Stability ±0.04°C / ±0.07°F Reference accuracy ±0.10°C / ±0.18°F Total accuracy ±0.50°C / 0.9°F Heating time incl.
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Page 59: 10.0 List Of Accessories
10.0 List of accessories All parts listed in the list of accessories can be obtained from the factory through our dealers. Please contact your dealer for assistance if you require parts which do not appear on the list. List of accessories Accessories Part no. - Page 60 Cleaning brush, 8mm 122822 Set of insulation plugs 123374 (ITC-155 A only) Set of test cables 104203 Certificate, National 99-C-T RS232 serial cable 105366 JofraCal PC software 124915 PART NO. FOR STANDARD INSERTION TUBES Sensor ITC-155 A ITC-320 A ITC-650 A size undrilled 123286...
- Page 61 Inserts are delivered without 4 mm reference hole, but with matching insulation plugs. PART NO. FOR STANDARD INSERTION TUBES – MULTI-HOLE Description ITC-155 A ITC-320 A ITC-650 A (metric) Type 1 123294 122750 122750 Type 2 123295 122752 122752 Type 3 123296 122754 122754...
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