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Reference manual
Temperature Calibrator
Jofra ETC-125 A / 400 A / 400 R

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  • Page 1 Reference manual Temperature Calibrator Jofra ETC-125 A / 400 A / 400 R...
  • Page 2 User- and Reference manual Temperature Calibrator JOFRA ETC-125 A / 400 A / 400 R  Copyright 2005 AMETEK Denmark A/S (123943-UK)
  • Page 4 The 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.
  • Page 5 List of contents ..........User manual, English ........Reference manual, English 2019-04-12 123943...
  • Page 6 User manual Temperature Calibrator JOFRA ETC-125 A / 400 A / 400 R  Copyright 2005 AMETEK DENMARK A/S (123943-UK)
  • Page 8 FIG. 1 2019-04-12...
  • Page 9 FIG. 2 CALIBRATION INSTRUMENTS AUTO STEP MENU 2019-04-12...
  • Page 10 FIG. 3 MENU °C °C AUTO STEP MENU 2019-04-12...
  • Page 11 FIG. 4 AUTO STEP AUTO STEP 2019-04-12...
  • Page 12 FIG. 5 MENU MENU MENU MENU MENU MENU MENU 2019-04-12...
  • Page 13: Table Of Contents

    List of contents 1.0 Introduction ..............2 2.0 Safety instructions ............3 3.0 Operating the calibrator ..........7 3.1 Before use ................. 7 3.2 Keyboard ................. 10 3.3 Display ................10 3.4 Connections ..............11 3.5 Calibrator functions - overview......... 11 3.6 Selecting the set-temperature ..........
  • Page 14: Introduction

    Introduction ETC-calibrators are temperature calibrators designed to calibrate temperature sensors. Read this manual carefully before using the instrument and make sure that all safety instructions and warnings are observed. 123943...
  • Page 15: Safety Instructions

    Safety instructions Read this manual carefully before using the instrument! In order to avoid any personal injuries and/or damage to the instrument all safety instructions and warnings must be observed. Disposal – WEEE Directive These calibrators contain Electrical and Electronic circuits and must be recycled or disposed of properly (in accordance with the WEEE Directive 2002/96/EC).
  • Page 16 • To ensure the connection to protective earth any extension cord used must also have a protective earth conductor. • Only use a mains power cord with a current rating as specified by the calibrator and which is approved for the voltage and plug configuration in your area.
  • Page 17 Caution – Hot surface • Do not touch the well, the insertion tube or the grid plate, as the calibrator is heating up / has been heated up – they may be very hot and cause burns. • Do not touch the tip of the sensor when it is removed from the insertion tube/well –...
  • Page 18 Caution… About the use: • Do not use the instrument if the fan 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 19: Operating The Calibrator

    Operating the calibrator Before use Warning • The calibrator must not be used for any purposes other than those described in this manual, as it might cause a hazard. • The calibrator has been designed for indoor use only and is not to be used in wet locations. •...
  • Page 20 • Never use heat transfer fluids such as silicone, oil, paste, etc. in the calibrators. These fluids may penetrate the calibrator and cause electrical hazard, damage or create poisonous fumes. Caution – Hot surface • Do not touch the grid plate, the well or the insertion tube as the calibrator is heating up –...
  • Page 21 Check that the voltage shown on the label above the power control switch is identical to the mains voltage (ETC-400 only). If not, the instrument should be returned to AMETEK Denmark A/S or the distributor for replacement. Plug in the cable below (pos. 3) the power control switch (pos.
  • Page 22: Keyboard

    Keyboard The keys on the keyboard activate the following functions (cf. Fig. 2): Description  ENTER button used to accept chosen options. UP ARROW button used to adjust temperature values  (value increases) and to select menu options. DOWN ARROW button used to adjust temperature values ...
  • Page 23: Connections

    AUTO STEP symbol used to indicate that the function is active (symbol flashes repeatedly). Check mark displayed when the calibrator is stable. Connections The instrument is designed for the following connections (cf. Fig. 1): Description Connection of RS232 cable  Calibrator functions - overview The instrument’s functions are divided into hierarchical groups.
  • Page 24: Auto Step

    AUTO STEP The AUTO STEP function (cf. Fig. 4) is used to step automatically between a range of different set-temperatures. AUTO  Press . The instrument displays the number of set- STEP temperature Press to select the required number of steps. ...
  • Page 25: Menu

    MENU The MENU function (cf. Fig. 5) is used to modify the SETUP parameters. Hold down for approx. 2 seconds. The word  MENU will appear on the display.  Press . The first SETUP parameter will be displayed.  Press to toggle between the SETUP parameters:...
  • Page 26: After Use

    After use Caution – Hot surface • Do not touch the well, the insertion tube or the grid plate - they may be very hot and cause burns. • Do not touch the tip of the sensor when it is removed from the insertion tube/well –...
  • Page 27: Switching Off The Calibrator

    • Scratches and other damage to the insertion tubes should be avoided by storing the insertion tubes carefully when not in use. Switching off the calibrator The following routine must be observed before the insertion tube is removed and the instrument turned off (cf. Fig. 1) : If the calibrator has been heated up to temperatures above 50°C/122°F, you must wait until the instrument reaches a temperature below 50°C/122°F before you switch it off.
  • Page 28 Reference manual Temperature Calibrator JOFRA ETC-125 A / 400 A / 400 R  Copyright 2005 AMETEK Denmark A/S (123943-UK)
  • Page 29 2019-04-12 123943...
  • Page 30 List of contents Introduction ................4 1.1 Warranty ..................5 Safety instructions ..............6 Setting up the calibrator ............10 3.1 Receipt of the calibrator .............. 10 3.2 Preparing the calibrator ............... 12 3.3 Choice of insertion tube / correct bore in well......14 3.4 Inserting the sensor ..............
  • Page 31: Introduction

    Introduction Congratulations on your new AMETEK Jofra ETC 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 32: Warranty

    This instrument is warranted against defects in workmanship, material and design for two (2) years from date of delivery to the extent that AMETEK will, at its sole option, repair or replace the instrument or any part thereof which is defective, provided, however, that this warranty shall not apply to instruments subjected to tampering or, abuse, or exposed to highly corrosive conditions.
  • Page 33: 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. Disposal –...
  • Page 34 • Only use a mains power cord with a current rating as specified by the calibrator and which is approved for the voltage and plug configuration in your area. • Before switching on the calibrator make sure that it is set to the voltage of the mains electricity supply.
  • Page 35 • Never place a hot insertion tube in the optional carrying case. Caution – Hot surface This symbol is engraved in the well of the ETC-400 A and in the grid plate of the ETC-125 A / 400 R. • Do not touch the well, the insertion tube or the grid plate, as the calibrator is heating up / has been heated up –...
  • Page 36 Caution… About the use: • Do not use the instrument if the fan 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 37: 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 38 • 1 RS 232 serial cable • 1 shoulder strap • 1 USB-key containing User-/Reference manual and software package “JOFRACAL” • 1 USB-key containing JOFRA IR-LAB calibration software (ETC-400 R only) • 1 correction table for emissivity (ETC-400 R only) When reordering, please specify the parts number found in the list of accessories, section 10.0.
  • Page 39: Preparing The Calibrator

    Preparing the calibrator Warning • The calibrator has been designed for indoor use only and is not to be used in wet locations. • The calibrator is not to be used in hazardous areas, where vapour or gas leaks, etc. may constitute a danger of explosion.
  • Page 40 Note… The instrument must not be exposed to draughts. Especially the temperature of the target unit surface on the ETC-400 R might be affected by this. Fig. 1 123943 2019-04-12...
  • Page 41: Choice Of Insertion Tube / Correct Bore In Well

    Check that the voltage shown on the label above the power  control switch is identical to the mains voltage (ETC-400 A/R only). If not, the instrument should be returned to AMETEK Denmark A/S or the distributor for replacement. Check that the earth connection for the instrument is present ...
  • Page 42 Caution… Before using new insertion tubes for calibration in the ETC- 125 instrument, the insertion tubes must be heated up to maximum temperature 125°C (257°F) for a period of minimum 30 minutes. Insertion tubes are only available for the ETC-125 A. An insertion tube is selected on the basis of the diameter of the sensor to be calibrated.
  • Page 43: Inserting The Sensor

    The various design combinations to choose from. 1/8 in. 1/16 in. 5/32 in. 3/16 in. 6 mm 1/4 in. Metric - ETC-400 A Imperial - ETC-400 A 1/4 in. 5/16 in. 1/4 in. 3/8 in. 1/16 in. 12.5mm 5/32 in. 1/2 in.
  • Page 44 Caution… • The well and the insertion tube must be clean before use. • Scratches and other damage to the insertion tube should be avoided by storing the insertion tube 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.
  • Page 45: Operating The Calibrator

    Operating the calibrator Keyboard, display and connections Keyboard CALIBRATION INSTRUMENTS AUTO STEP MENU Fig. 3 Pos. Description LCD.  AUTO STEP button used to activate AUTO STEP.  The function is used to switch between a series of set- temperatures automatically. ESC/MENU button used as Escape key or to activate the ...
  • Page 46 Display Fig. 4 Pos. Description  CHECKMARK displayed when the calibrator is stable.  AUTO STEP symbol used to indicate that the function is active (symbol flashes repeatedly).  Used to display set-temperatures, time-until-stable and parameter values in the menu system. ...
  • Page 47 Connections All connections are located on the back of the instrument. Fig. 5 Pos. Description Power control switch with connection for cable and on/off  switch.  Connection for RS232 cable.  Voltage label. It is very important that the voltage shown on the label is identical to the mains voltage.
  • Page 48: Starting The Calibrator

    Starting the calibrator  Switch the calibrator on using the power control switch (Fig. 5, pos. 1). 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 49 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. The instrument will emit an audible alarm and the estimated time until stable will be replaced by the set-temperature: °C...
  • Page 50: 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 51 Press to select the required number of  steps (minimum 2 steps, maximum 8 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. ...
  • Page 52 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.
  • Page 53: Using The Menu

    Using the MENU Hold down for more than approx. 2 seconds:  MENU  Press to select SETUP.  Press to switch between the adjustable parameters:    2019-04-12 123943...
  • Page 54: Adjusting The Temperature Unit

    If you wish to exit SETUP, simply press  MENU The instrument will ignore all changes if you press  MENU when adjusting any of the parameters.  Press to adjust the parameter. 4.5.1 Adjusting the temperature unit  Press to switch between °C and °F: °C - and...
  • Page 55: Adjusting The Max-Temperature

    4.5.2 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 56: Adjusting The Temperature Resolution

    4.5.4 Adjusting the temperature resolution Press to select the required number of  decimals: °C - and °C Press to accept your selection.  123943 2019-04-12...
  • Page 57: Calibrating Ir-Thermometers (Etc-400 R Only)

    Calibrating IR-thermometers (ETC-400 R only) Warning • Do never allow any foreign material to come in contact with the target unit surface, as the emission factor of the target unit might change. • Do not touch the target unit surface and the grid plate –...
  • Page 58 When the calibrator is stable, the display will show the checkmark symbol. The instrument will emit an audible alarm and the calibrator is now ready for use. °C °C Select the emission factor of the target unit on the IR thermometer to be calibrated.
  • Page 59 Caution… Avoid contact to the target unit surface with the thermometer during operation, as the thermometer accuracy will be affected and the thermometer may overheat or be damaged. Recommended operating distance is between 2,5 – 5 cm / 1 – 2”. Ensure the thermometer’s “field of vision”...
  • Page 60: Simulation/Training

    Simulation/training AUTO Hold down the buttons while you switch  STEP 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.
  • Page 61: 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 62 ETC-125 A only. The following routine must be observed before the insertion tube is removed and the instrument switched off: Caution – Hot surface • Over 50°C/122°F If the calibrator has been heated up to temperatures above 50°C/122°F, you must wait until the instrument reaches a temperature below 50°C/122°F before you switch it off.
  • Page 63 Remove the insertion tube from the calibrator using the tool for insertion tube supplied with the instrument as shown in Fig. 8. Caution… • The insertion tube must always be removed from the calibrator after use. The humidity in the air may cause corrosion oxidation on the insertion tube inside the instrument.
  • Page 64: 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 65 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.
  • Page 66: Returning The Calibrator For Service

    Returning the calibrator for service When returning the calibrator to the manufacturer for service, please enclose a fully completed service information form. Simply copy the form on the following page and fill in the required information. The calibrator should be returned in the original packing. 123943 2019-04-12...
  • Page 67 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. 2019-04-12...
  • Page 68: Maintenance

    Maintenance Cleaning Caution… Before cleaning the calibrator, you must switch it off, allow it to cool down and remove all cables. Caution – Hot surface • Over 50°C/122°F If the calibrator has been heated up to temperatures above 50°C/122°F, you must wait until the instrument reaches a temperature below 50°C/122°F before you switch it off.
  • Page 69 It is very important that humidity in the well and insertion tube is removed to prevent corrosion and frost expansion damages. Caution – ETC-125 A only The insertion tube must always be removed from the calibrator after use. The humidity in the air may cause corrosion oxidation on the insertion tube inside the instrument.
  • Page 70 If it is impossible to clean the surface with clean air only the target unit could alternatively be heated up to max. temperature. The dust and fibres will then be burned off the surface. There is, however, the risk that the dust and fibres could permanently burn into the surface, altering the emission factor.
  • Page 71: 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 calibration certificate.
  • Page 72  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. 123943 2019-04-12...
  • Page 73: 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 1-31. Press to accept your selection. ...
  • Page 74: 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. ...
  • Page 75 ETC-400 A / R 50°C / 122°F 100°C / 212°F 200°C / 392°F 300°C / 572°F 400°C / 752°F The instrument will now heat up/cool down to reach the first calibration temperature: °C °C Once the calibrator is stable, you need to enter the reference ...
  • Page 76 If the calibrator is found to be within the permitted tolerances, the instrument will display the text =OK at the top of the display. The text Cont. will flash in the bottom of the display to indicate that you may continue without adjustments: If the instrument detects excessive deviations for one or more steps, it will show a screen reading =ERR.
  • Page 77 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 ...
  • Page 78: Calibrating/Adjusting The Etc-400 R

    Fig. 10 For the calibration it is recommendable to use the RTD reference sensor 65-Pt100-150 SPEC. which AMETEK DENMARK A/S has developed specifically for this instrument. In principle any sensor fitting the insertion hole is useable, however, there is the risk of incorrect temperature reading due to the limited insertion depth of the reference sensor hole.
  • Page 79: Technical Specifications

    Technical specifications The illustration below shows the setup which forms the basis for the technical specifications. In this case an ETC-400 A. Fig. 11 Pos. Description  Calibrator ø4 mm Pt 100 sensor with traceable certificate (ETC-  125/400 A) ø3mm Pt 100 sensor with traceable certificate (ETC-400 ...
  • Page 80 Thermal specifications All specifications are given with an ambient temperature of 23°C/73.4°F ± 3°C/5.4°F. Measured at the bottom of the well with a 4 mm sensor Specified at 115V / 230V Specifications Model ETC-125 A Max. temperature : 125°C / 257°F Min.
  • Page 81 ETC-125 A Time to stability: 3 minutes Cooling time 125 to 100°C / 257 to 212°F : 1 min. 100 to 0°C / 212 to 32°F 17 min. 0 to -10°C / 32 to 14°F 14 min. ETC-400 A Max. temperature : 400°C / 752°F Min.
  • Page 82 ETC-400 R Max. temperature : 400°C / 752°F Min. temperature : 5°C / 41°F @ ambient temperature 0°C / 32°F 28°C /82.4°F@ ambient temperature 23°C/ 73.4°F 45°C / 113°F @ ambient temperature 40°C /104°F Display resolution : 1° or 0.1°C / 1.8° or 0.18°F Stability ±0.3°C / ±0.54°F Accuracy...
  • Page 83 Electrical specifications Specifications Model ETC-125 A Power supply [VAC]: Multivoltage 115VAC and 230VAC, 47-63Hz 115 V (90-132) and 230 V (180-264) Power consumption (max.): 75 VA ETC-400 A / R Power supply [VAC], 115VAC, 45-65Hz 90-127 230VAC, 45-65Hz 180-254 Power consumption (max.): 350 W Mechanical specifications...
  • Page 84 ETC-400 A / R Weight 1.58 kg. / 3.5 lb. (ETC-400 A) 1.7 kg. / 3.7 lb. (ETC-400 R) Dimensions LxWxH 172 x 72 x 182 mm / 6.8 x 2.8 x 7.2 inch Operating temp. 0 to 40°C / 32 to 104°F Storage temp.
  • Page 85: 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 Parts no.
  • Page 86 Tel +86 10 8526 2111 Tel +49 (0)2159 9136 510 India jofra.sales@ametek.com.cn info.mct-de@ametek.de Tel +91 22 2836 4750 jofra@ametek.com Denmark Tel +45 4816 8000 jofra@ametek.com Information in this document is subject to change without notice. ©2017, by AMETEK, Inc., www.ametek.com. All rights reserved.

This manual is also suitable for:

Jofra etc-400 aJofra etc-400 r

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