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Fast Cal Series Iss.07 – 08/13

TESTING THERMAL SWITCHES WITH FAST-CAL

The site Model Fast-Cal’s include a switch test facility which is used in conjunction with the supplied Cal Notepad

Software. See Cal Note Pad manual or instructions on how to use this.

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Содержание Fast-Cal High

Страница 1: ...el 44 0 1704 543830 Fax 44 0 1704 544799 Internet www isotech co uk E mail info isotech co uk The company is always willing to give technical advice and assistance where appropriate Equally because of the programme of continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice This publication is for information only ...

Страница 2: ...ERATION 11 FAST CAL HTM 2010 11 FAST CAL 11 How to measure the true temperature inside the block 11 How to measure the true temperature inside the block 11 The Controller 11 The Reference Thermometer 12 The Industrial Thermometer 12 SPECIFICATIONS HTM 2010 LOW MODELS 13 SPECIFICATIONS MEDIUM HIGH MODELS 14 OPERATING THE FAST CAL 15 FRONT PANEL LAYOUT 15 The Temperature Controller 15 Altering the S...

Страница 3: ...O 20MA 19 TESTING THERMAL SWITCHES WITH FAST CAL 20 USING THE PC INTERFACE 21 CONNECTIONS 21 CAL NOTEPAD 22 DEVELOPMENT 22 HOW TO INSTALL CAL NOTEPAD 23 PROTOCOL 23 DIAGNOSTIC ALARMS 24 INITIAL TESTING 25 IMPORTANT NOTICE 25 MAINTENANCE 26 APPENDIX 1 TROUBLE SHOOTING 27 Unit fails to operate 27 Unit unstable 27 Cannot establish PC Communications 27 APPENDIX 2 INDICATOR CONFIGURATION REFERENCE ONLY...

Страница 4: ...pment must be correctly earthed This equipment is a Class 1 Appliance A protective earth is used to ensure the conductive parts can not become live in the event of a failure of the insulation The protective conductor of the flexible mains cable which is coloured green yellow MUST be connected to a suitable earth The blue conductor should be connected to Neutral and the Brown conductor to Live Line...

Страница 5: ... the apparatus when it is hot or cold unless wearing the appropriate protective clothing and having the necessary training 6 Do not drill modify or otherwise change the shape of the apparatus 7 Do not dismantle the apparatus 8 Do not use the apparatus outside its recommended temperature range 9 If cased do not return the apparatus to its carrying case until the unit has cooled 10 There are no user...

Страница 6: ...in the carrying case DO use that pocket for pre warming pre cooling or storage DO NOT rely on the controller to tell you the temperature of the block Its job is only to provide an isothermal volume It is the calibrated working standard that is used to measure actual temperature DO NOT calibrate very large sensors in the Fast Cal units unless you can accept large immersion errors We have larger pro...

Страница 7: ...GLASS PARTS ARE NOT COVERED BY THIS GUARANTEE INTERFERENCE WITH OR FAILURE TO PROPERLY MAINTAIN THIS INSTRUMENT MAY INVALIDATE THIS GUARANTEE RECOMMENDATION The life of your ISOTECH Instrument will be prolonged if regular maintenance and cleaning to remove general dust and debris is carried out ISOTHERMAL TECHNOLOGY LTD PINE GROVE SOUTHPORT PR9 9AG ENGLAND TEL 44 0 1704 543830 544611 FAX 44 0 1704...

Страница 8: ...ENT PERSONNEL FAMILIAR WITH GOOD MEASUREMENT PRACTICES IT IS EXPECTED THAT PERSONNEL USING THIS EQUIPMENT WILL BE COMPETENT WITH THE MANAGEMENT OF APPARATUS WHICH MAY BE POWERED OR UNDER EXTREMES OF TEMPERATURE AND ARE ABLE TO APPRECIATE THE HAZARDS WHICH MAY BE ASSOCIATED WITH AND THE PRECAUTIONS TO BE TAKEN WITH SUCH EQUIPMENT ...

Страница 9: ... yourself with the parts of the manual relevant to your model Your unit s supply voltage requirement is specified on a plate on the instrument along with the serial number All Fast Cal units will work on an electricity supply frequency of 50Hz or 60Hz The apparatus is provided with an approved power cord If the plug is not suitable for your location then the plug should be removed and replaced wit...

Страница 10: ...inties Site or Self contained Calibrators In these an Indicator and external calibrated sensor are used to measure the temperature of the block This arrangement gives good accurate and reliable results To recalibrate however it does mean sending the whole calibrator back to the calibration laboratory This the calibrator is self contained self sufficient and meets ISO9000 requirements External Stan...

Страница 11: ... placed into the calibration well The thermometers under test are placed into suitable holes in the metal insert For the S models a calibrated reference probe should be placed into the block and the actual temperature can be read from the temperature indicator For the B models an external temperature indicator should be used For traceable calibration the actual value of the insert temperature shou...

Страница 12: ...ture inside the block The Industrial Thermometer The Industrial Thermometer is placed in the calibration volume and is compared to the True Temperature as indicated by the Reference Thermometer An insert will typically have a 1 immersion error For more details see Depths of Immersion Tavener J P Volume 9 2 Isotech Journal of Thermometry pages 79 87 ...

Страница 13: ...rating Temperature 55 C below ambient 55 C below ambient Stability Absolute over 30 minutes Basic Site 0 02 C 0 02 C Accuracy Basic Site 0 2 C 0 15 C 0 2 C 0 15 C Calibration Volume 5 x 148mm wells 25mm dia x 148mm Standard Block Hole Dimensions 1 x 8 0mm dia 1 x 6 50mm dia 3 x 4 50mm dia Fixed Block 1 x 8 0mm dia 1 x 6 50mm dia 2 x 4 50mm dia Dimensions not including handle Height 228mm Width 248...

Страница 14: ...nimum Operating Temperature 30 C 35 C Stability Absolute over 30 minutes Basic Site 0 03 C 0 03 to 0 5 C Accuracy Basic Site 0 3 C 0 2 C 1 C 500 C 2 C 6 50 C 0 5 C Calibration Volume 25mm dia x 148mm 25mm dia x 148mm Standard Block Hole Dimensions 1 x 8 0mm dia 1 x 6 50mm dia 2 x 4 50mm dia 1 x 8 0mm dia 1 x 6 50mm dia 2 x 4 50mm dia Dimensions not including handle Height 228mm Width 248mm Depth 1...

Страница 15: ...tions where it is advantageous to limit the heating or cooling rate An example might be when testing bimetallic thermostats by forcing the Dry Block to heat at a controlled rate it is easier to determine the temperature at which the thermostat changes state The Dry Block can have its heating rate limited with the Setpoint Ramp Rate feature This feature is accessed from the Scroll key Depress the k...

Страница 16: ...en the setpoint and the message cooling to temperature This message is not an error but is showing that the cooling fan is operating It will automatically switch off when the temperature is within 5 C of the setpoint Units Momentary pressing of the Scroll key will show the controller units C or F THE TEMPERATURE INDICATOR SITE S MODELS ONLY The site models include an electronic temperature indicat...

Страница 17: ... and this REM beacon provides a clear and continuous indication of the calibration status Isotech will configure and set user calibration when the Dry Block is ordered with a temperature sensor To alter the calibration status press the Scroll key until the lower display shows UCAL The upper display will indicate either ON for user calibration Or OFF for factory calibration of the indicator Use the...

Страница 18: ...s First the temperature point and secondly the Error offset at this temperature point Isotech Dry Block calibration certificates will show the values to suit a particular sensor These values can be inspected and modified with the following procedure Hold the PAGE key down until the display indicates CONF GOTO then 0 CODE Set the Code to 2 with the UP key The display reads CONF Press the Page Key u...

Страница 19: ...s 5 0 CONNECTING A CURRENT TRANSMITTER UP TO 20MA The transmitter should be powered externally a 2 49Ohm current sense resistor is fitted internally and this allows the indicator to read mA To scale the Linear input 1 From the input type menu select mV 2 The scaling can be configured in the CAL menu accessed as described above 3 Access the Input sub menu by pressing the Page button 4 Set the input...

Страница 20: ...s 07 08 13 TESTING THERMAL SWITCHES WITH FAST CAL The site Model Fast Cal s include a switch test facility which is used in conjunction with the supplied Cal Notepad Software See Cal Note Pad manual or instructions on how to use this ...

Страница 21: ... daisy chained together The benefit of this approach is that a number of calibration baths may be connected together in a daisy chain configuration and then linked to a single RS232 see diagram Note The RS 422 standard specifies a maximum lead length of 1200M 4000ft A true RS422 port will be required to realise such lead lengths The Isotech conversion leads are suitable for maximum combined lead l...

Страница 22: ...ure indicator such as the milliK or TTI 10 The software requires Windows 9X XP a minimum of 5Mb of free hard drive space and free serial ports for the instruments to be connected DEVELOPMENT Cal NotePad was developed by Isothermal Technology using LabVIEW from National Instruments The license details are shown on the download page and in the Cal Notepad manual ...

Страница 23: ...which will install the application a user manual with setup information and the necessary LabVIEW run time support files 5 Should you ever need to uninstall the software then use the Add Remove Programs option from the Control Panel PROTOCOL The instruments use the Modbus Protocol If required e g for writing custom software the technical details are available from our Document Library at http www ...

Страница 24: ...en entered in the previous configuration E CaL Calibration error Re instate Factory calibration refer to Isotech E2 Er EEPROM error Return to Isotech for repair EE Er Non vol memory error Note the error and contact Isotech E Lin Invalid input type This refers to custom linearisation which may not have been applied correctly or may have been corrupted Go to the INPUT list in configuration level and...

Страница 25: ...s described above and can now be used for calibration If any problems or faults arise during these tests please contact us or our agents for help and advice IMPORTANT NOTICE The controller s function settings are preset and will not require adjustment The Medium and High models incorporate a built in insert holder In addition to the convenient storage of a second insert it can be used to speed up ...

Страница 26: ...TENANCE Maintenance is limit to keeping the apparatus and the calibration volume clean and free from debris There are no internal user serviceable parts Repair and maintenance must be carried out by Isothermal Technology Limited or an approved agent ...

Страница 27: ...l parameters have been interfered with consult your local agent Cannot establish PC Communications For RS232 you must use the Isotech adaptor cable Ensure the addresses of the controller and indicator match those set in Cal Notepad Ensure each controller and indicator is set to a unique address Refer to Using the PC Interface section and the Cal Notepad manual for further details ...

Страница 28: ...int 1 0 00 Point2 Adjust Point 2 0 00 Point3 Adjust Point 3 0 00 Point4 Adjust Point 4 0 00 Point5 Adjust Point 5 0 00 Offset1 Adjust Offset 1 0 00 Offset2 Adjust Offset 2 0 00 Offset3 Adjust Offset 3 0 00 Offset4 Adjust Offset 4 0 00 Offset5 Adjust Offset 5 0 00 CalibrationSerialNumberHi Calibration serial number high 0 CalibrationSerialNumberLo Calibration serial number low 0 Comms Name Descript...

Страница 29: ... Medium 935 14 98 DB Semi Standard PRT High 935 14 72 DB Semi Standard T C High 935 14 63 DB Standard Insert Low and Medium 907 02 03 Blank Insert Low and Medium 907 02 03b Special Insert Low and Medium 907 02 03c Standard Insert High only 907 02 03d Blank Insert High only 907 02 03f Special Insert High only 907 02 03g Carrying Case 931 22 72 ...

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