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F600 Precision DC Thermometry Bridge

1. F600 precision thermometry bridge Operator s handbook on CD e Test certificate e Mains lead H USB lead Please contact the ASL Technical Services Group immediately if any of these items are missing or damaged Please retain the packaging In case of return servicing or calibration use the original packaging Failure to do so may invalidate the warranty and or incur additional costs outside the warranty period Please contact your agent dealer or supplier when the original packaging Is unavailable 2 3 Setting up temperature measurement Page 5 To enable accurate resistance to temperature conversion to be carried out by the instrument PRT characterisation data is required for both e temperature conversion algorithm DIN CvD or ITS90 and temperature conversion algorithm coefficients For Thermistors Steinhart amp Hart characterisation data is only required for temperature conversion algorithm coefficients 1 Thermometer probes and other accessories if ordered will be supplied separately ASL 2007 F600DC 14 001 2 F600 User Manual ASL The probe conversion algorithm and its coefficients can be stored in the instrument s internal non volatile memory Each probe setting stores one set of PRI Thermistor characterisation data up to 99 settings can be stored Up to 99 channels can be stored for the instrument Each channel contains a complete set of instrument set up Conditions this
2. The VFD display will be blanked turned off in Standby mode The orange standby LED will be on when the Bridge is in this mode Page 40 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 Menu key The Menu key is used to access all other aspects of the F600 These menus are used less frequently Press the Menu key to display the top level menu The A and W keys can be used to navigate through these menus Ihe numeric keypad is also active Ihe Menu key can be used to return to measurement mode The Clear key will cause the instrument to return to the previous menu measurement mode if the top level menu is already shown 0 Top 1 Statistics 2 Probes 3 Channels A 4 System Menu oK v Menu Clear O CJ The following sections describe each of these menus and their sub menus where appropriate The statistics menu is shown below as an example of sub menu Note The navigation cluster Clear key will return to the previous menu Page 41 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 1 Statistics menu Press the 1 key on the numeric pad or the OK key to access this menu To show 1 Statistics Mean 1 000000 Diff No 0 1342 Max 0 999999 Min 1 000001 Std Dev 0 00001 Clear oO O oo The Clear soft key may be used to reset and restart statistical calculation Press the Menu key to return to measurement mode or press the Clear key to return to top level menu Page 42 ASL
3. soft key Use the Prev and Next soft keys to move between pages to review information about all the current probes the pages are continuous so eventually by pressing the Next soft key you will return to the first page Move to any probe other than PO 22 Probe Edit Probe ID 0 Name def00 Wire 4 Wire Conversion DIN RO 100 A 3 9083e 03 B 5 775e 07 C 4 183e 12 Prev Next Menu Clear LJ Ld LJ CL CJ Page 46 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Note Prb00 is the default F600 probe You will not be able to edit details for this probe Press the More soft key to edit the displayed probe details The display will change to 22 Probe Probe ID 0 Name def00 Wire 4 Wire Conversion DIN RO 100 A 3 9083e 5 775e 07 4 183e 12 Menu Clear LC CJ The New soft key will enter a new probe with the first unassigned number The display will change to show a new probe with the default system probe settings If at any time you want to exit the procedure press the Menu or Clear key but note that the entries will not be saved s Probe Eait _ New probe shown as unsaved Probe ID 1 Name Prb02 La ee Wire 4 Wire Conversion RO 100 A 3 9083e 5 775e 07 4 183e 12 Menu Clear LC CJ Press the More soft key twice to get to the following screen Page 47 ASL 2007 F600DC 14 001 2 F600 User Manual ASL
4. 14 2 Firmware updote Eiere Un nl EE 97 14 3 Firmware update DioCecure arree rtro rrr r rre EECA EErEEEESEEE CEEE S EEEo EEE ennnen nenene 97 Page v ASL 2007 F600DC 14 001 2 F600DC User Manual ASL 15 APPENDIX 2 CALLENDAR VAN DUSEN cccccssesseeeseeenseeeeseeessseeeseceaseeeeseoaaseeeesooaseeeseoeaneeeesoonaas 99 15 1 Calendar van D sen COU TION CV EEN 99 16 APPENDIX ee Mee 100 16 1 International Temperature Scale OI 100 17 APPENDIX 4 DIN STANDARD cceccecceeeeeeeenseeeeeeeaneeeeeeeeasseeeeecaasseeseooaaseseseooaaseeeseoonaseeeseooanseeesoes 102 17 1 INAS CO 1260 EC 79 T d 102 18 APPENDIX 5 STEINHART amp geet 103 18 1 Steinhart amp Hart thermistor conversion Algorithm cccccseeecceeeeeseeeeeeeeeeeceeeeseeeeeeeeeseeeeeesesaaeeeeeeeas 103 INDEN oana E A A E A O 104 Page vi ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Conventions used in this manual Structure of manual The manual is divided into sections Each section deals with a specific topic or related topics Sections are displayed in a regular bold typeface for example 1 0 Introduction sections are sub divided into sub headings for example 1 1 Features These may also be subdivided Terminology The terms F600DC Precision Bridge precision bridge bridge F600 FEOODC and instrument are used interchangeably in this manual Warnings and Notices These appear in the body of the text clearly displayed with a box s
5. Page 75 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 76 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 9 Communications Interface and PC commands 9 1 Introduction The F600 is fitted with a USB communication interface as standard Ihe connected PC must have the correct USB driver installed to use the interface see section 9 2 The USB PC interface will be installed as a virtual COM port driver simulated serial port The communication protocol is Bits per second 9600 Data bits 8 Stop bits Parity none Flow control none An interval of Ims to 2 ms should be allowed between transmitted characters The commands are buffered by the F600 saved in order of arrival so more than one command can be sent to the instrument without waiting for the previous one to complete however it is normally easier to wait for the expected response before issuing the next one 9 2 USB device driver Run the program CDM_Setup exe from the directory D Downloader on the CD supplied with the instrument This will install the USB drivers You will see the following message once this is complete x i FTD CDM Drivers have been successully installed OK 19 Replace the D with the name of your CD device as necessary Page 77 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 9 3 Instrument PC commands The following sections cover use of the remo
6. internal or external or change probes Channel settings are entered from the Channel Edit Menu see section 5 3 6 probe settings from the Probe Edit Menu section 5 3 4 and reference resistor values from the Rs Menu section 5 3 9 Press the Chan function key to display the channel menu below Rt Rs Probe CL Cy Press the soft key to select the function you need to change or set 5 2 8 1 Channel selection Up to 99 channels can be stored and edited channel 0 is the default instrument channel Note External channel numbering is only important when the F600 is used with a switch box otherwise external channel numbering can be set as required Each channel contains a complete set of instrumental conditions channels can be used to quickly and efficiently restore a previous saved setup Alternatively they can be set to use the instrument efficiently with an external switch box External channels may be set to perform either as R or IRs inputs Page 35 ASL 2007 F600DC 14 001 2 F600 User Manual ASL Pressing the R soft key will display the screen below Highlighted Channel Ch00 PbOO 100R i A list of active channels will be shown Use the A V navigation keys to scroll the highlighted line up or down the list up to three lines only are displayed on the screen due to space limitations Press the OK key to select the highlighted channel or press the Chan key to select the h
7. F600DC User Manual ASL Important safety information Read and understand the user instruction manual before attempting to use the instrument The F600DC is a precision DC bridge It must not be used for any other purpose Warning The protection provided by the instrument may be impaired if the equipment is not used in the manner specified Only replace items or components with an approved or equivalent spare part All soare and consumable parts are available from ASL Warning The instrument is NOT designed to be used in a potentially explosive atmosphere or medical environment x Do NOT clean the instrument with solvents x Do NOT insert objects into openings x Do NOT place the instrument onto a hot or cold surface x DoNOT place any weight on top of the instrument v Do use the correct USB lead supplied Warning The outer conductor of the BNC connectors and the cable braid are not at earth potential and should not be earthed Page viii ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Do NOT open the case There are no user serviceable parts inside Warning Insoect cables and probes regularly ensuring that their insulation is not damaged Warning The instrument and the internal Li clock battery must be disposed of in accordance with local regulations General warning symbol This indicates that a hazardous condition or general danger may exist You must read the relevant sections in the User
8. Limit High 100000 Volts Low 10000 Volts OK Zero 1 y Edit Menu Clear LJ LI Press the Edit soft key to alter the analogue output values The screen will change to show Page 65 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 45 Analogue Curent edit field Type O P Measurement A ad OK gt vy Menu Clear O CJ The display has changed to show the and brackets around the current edit field the measurement type in this case The lt and navigation keys are used to move the active edit field Move to the field that you want to change and press OK The lt and gt keys will change to moving the cursor within the field The numeric keypad may be used to change numeric field values Editing is similar to the Probe Edit screen see section 5 3 4 Use the A and V navigation keys to change the Measurement field Type O P This field is fixed to Measurement as the output value for the F600DC Bridge The output is based on the current units Output V Measurement Zero Scale Channel selects channel for which to set the analogue parameters to 0 to 99 Scale scale factor for the selected channel in units volt 1000 to 0 01 Limit High sets the maximum output in volts for the selected channel 10 0 to 10 0V Limit Low sets the minimum output in volts for the selected channel 10 0 to 10 0V Zero sets the offset value from OV for the selected channel real
9. Manual before using the instrument Refer to manual symbol When you see this symbol on the instrument it means that there is more information relating to this in the User Manual Page ix ASL 2007 F600DC 14 001 2 F600DC User Manual ASL Important installation information Please ensure that the instrument is installed correctly x Do NOT use the instrument near water or in damp conditions x Do NOT locate the instrument near a source of heat x Do NOT insert objects into any ventilation openings x Do NOT site the instrument in a draught or near an air conditioning unit v Locate the instrument on a suitable and secure surface v Ensure air can freely circulate around the instrument The instrument uses a universal input voltage power supply Use a plug to connect to the mains supply If in doubt consult a qualified electrician The supply connections are shown below if a UK cord set Is fitted Brown wire To Live Line L Blue wire to Neutral N Green and Yellow wire to Earth Ground Warning The instrument is designed to be connected to the mains supply via a plug and must be effectively earthed Page x ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Important probe safety information Care must be taken with probes used with the instrument The following safety information must be observed x Do NOT attempt to lift the F600 by any of the leads v Do ensure that long probe leads are kept away f
10. OU Multiply by 0 4 Multiply by 0 8 2 Multiply by 3 Multiply by 2 lt base gt O Gain set to 1x100 Gain set to 1x10 2 Gain set to 1x102 3 Gain set to 1x108 4 Gain set to 1x108 5 Gain set to 1x104 6 Gain set to 1x105 7 Gain set to 1x 10 8 Gain set to 1x 107 Function sets the active channel s gain Example CONF GAIN lt space gt 3 1 lt cr gt lt lf gt sets the active channel s gain to 20 9 4 7 CONFigure GAIN Command CONF GAIN CONFIGURE GAIN Returns lt multiplier gt lt base gt lt cr gt lt If gt formatted to 2 significant digits Function Returns the active channel s gain setting Example CONF GAIN lt cr gt lt lf gt command 03 01 lt cr gt lt lf gt response returns the active channel s gain settings of 20 9 4 8 CONFigure FiLTer lt filter gt Command COMF FILT lt filter gt CONFIGURE FILTER lt filter gt Returns None Parameters lt filter gt O sec 2 sec 2 4 sec 3 10 sec 4 20 sec Page 82 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Example COMFE FILT 1 lt space gt lt cr gt lt lf gt sets The sample rate to 2 seconds 9 4 9 CONFigure FiLTer Command COMF FILT CONFIGURE FILTER Returns lt filter gt Function Returns the currently active channel s filter setting Example COMF FILT lt cr gt lt lf gt command Ol lt cr gt lt lf gt response returns the active channel s filter setting of 2 sec 9 4 10 CONFigure AOUT lt type gt lt channel gt lt scale g
11. The VFD brightness may be set from the menu options see section 5 3 7 3 3 LED indicators Two LEDs are situated to the right hand side of the instrument 3 3 1 Power LED The lower green LED Is illuminated when power is applied to the bridge and the bridge is switched on The bridge should be switched off if it is not to be used for a long period of time 3 3 2 Standby LED The upper orange LED is lit whenever the bridge is in standby mode In this mode the VFD display is turned off saving power and prolonging the display s life the remainder of the electronics is powered normally during standby to ensure the instrument is stable and ready to use at a moments notice See the section on the Disp function key for further details 3 4 The keypad The instrument s keys are grouped by type and consist of nine Function keys a twelve key Numerical keypad a Navigation and OK cluster of keys four Soft keys and separate Menu and Clear keys The combination of Function and Soft keys lets you choose how to access data and or functions within the instrument The F600 keypad is shown in figure 3 1 and in more detail in figure 3 3 The keys are used to select the various menu options and to control the instrument Generally no more than one menu level is required for the commonly used settings A few infrequently used options require two or three menu levels Operation is very simple and straightforward once you are familiar wi
12. the current to the highest value allowed by the self heating of the probe Page 32 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 2 6 Hold function key The Hold function key does not have a menu associated with it Press the Hold key to freeze the value shown on the display this is indicated by the letter H on the top line see below Measurements continue even if the display is frozen Press the Hold key to un freeze the display Page 33 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 2 7 Zero function key The Zero function is useful when looking for changes The current reading is held and then subtracted from subsequent readings The function key does not have a menu associated with it Press the Zero key to zero the value shown on the display This is indicated by the letter Z on the top line see below Mean 10 3520 Diff No 0 00002 12 Max 10 3521 Min d 10 2319 Std Dev 0 0001 LJ The zero function can be used with any of the instrument s temperature units it will not work when ratio or resistance is selected Note A warning message will appear if the zero function key is pressed when ratio mode is selected Zero mode can be turned off by pressing the Zero key again Page 34 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 2 8 Chan function key The channel function key is used to change channels select an alternative reference resistor
13. 0 ift gt 0 C are defined in IEC751 for standard PRIs However the coefficients must be measured individually oy regression for a particular PRI when greater accuracy is required An alternative and easier method exists via the Callendar van Dusen CvD equation based on measurement of four accurately known temperatures The F600 allows these coefficients to be entered for each probe used The resistance to temperature conversion calculation is then carried out automatically within the instrument However this does rely on the user knowing the coefficients A B and C accurately and entering these into the F600 It is worth noting that the coefficients vary between standards Typical values PRT dependent are Standard DIN 43760 0 003850 3 9080 x 103 5 8019 x 107 4 2735 x 10 12 ASTM 0 003911 3 9692 x 103 5 8495 x 107 4 2325 x 10 12 ITS 90 0 003926 3 9848 x 103 5 870 x 107 4 0000 x 10 12 0ift gt 0 C Page 99 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 16 Appendix 3 ITS 90 16 1 International Temperature Scale ITS 90 The purpose of this scale is to define procedures by which certain specified practical PRIs of the required quality can be calibrated in such a way that the values of temperature obtained from them can be precise and reproducible at the same time matching the corresponding thermodynamic values as closely as current technology permits Since 1968 when the IPTS68 was ad
14. 1 PRT or 1 thermistor 1 reference resistor 4 x BNC shield 1 x SB148 23 Mesurements do not include uncertainties to the sensor 24 Using 1002 IMA current x4 gain external reference medium adaptive filter and a 2 second update rate Page 91 ASL 2007 F600DC 14 001 2 F600 User Manual 11 2 Display Vacuum Fluorescent Display VFD 11 3 Analogue outputs Output 1 11 4 Power supply Mains charger supply voltage range Power consumption Supply frequency range Fuse 11 5 Environmental Storage temperature range Service temperature range Specified operating temperature range Operating relative humidity conditions 11 6 Dimensions and weight Dimensions Weight ASL 206 x 128 adjustable brightness 10V dc 10 mA Function is range dependent 90Vac 264Vac 95VA max 47Hz 63Hz T3A 250 Vac slow blow 20 C to 50 C 15 C to 35 C 15 C to 25 C lt 80 RH non condensing 150 x 455 x 450 h xwx d 7 kg The F600 has been designed to comply with current standards and safety legislation The instrument complies with IEC61010 1 and conforms to the low voltage and EMC directives Page 92 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual This page is intentionally left blank Page 93 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 12 Cleaning and Maintenance 12 1 Cleaning Make sure the F600 is disconnected from any leads and from the mains supply before cleani
15. 2 HIR E 2 Se 103 elt RE 2 CCESSOT ES e 89 AMIAT iaoi cass 25 68 Analogue outputs 65 C Calibration 60 73 Channel edit menu 52 Channel review menu 5 Cleaning sssr 94 CIOCK menu 57 58 COMMUNICAHIONS n 7 Conversion algorithms OD eer rer rere 99 KE 102 SSS RRE 100 OC EEN 103 CVD ccn 5 49 71 91 99 D Definitions AE Ee r 2 milli degree C uere 2 milli degree Fu 2 MII KEIVIN n DIN et 5 44 48 99 102 Disposal INfOrmMAt ON nsa xii E EXPANS ON POTTS n 13 F Lechuires AAA Firmware Update un 97 Front panel rreren 7 Function keys e Ce Ip ET 10 35 Page 104 A 10 30 D o e enrerre 10 21 22 40 UE 10 27 Ce EE 10 28 leie EE 10 33 Mode insite 10 25 lat Se iveesonctuscaesnienenvrosewes 10 26 Zero 10 34 G Getting started use 6 I INPU CONNECTIONS en 11 Installation information D Internal resistor calibration 0 HES RE 99 100 101 K Key OCG aaa nitiarceveamidnn 8 L FE OG reni a 8 Be 8 Ste Tele e E 8 M MAINS INU NEE 12 MAINTENANCE srren 94 Measurement principles 2 Measurement ranges ig MENU KEY rerien 4 Menu keys EE Per eee 10 Vue E 10 Novicen 10 N NOME DIGTE nu 12 NUMET C KEYS 10 O Operating Modes 00 19 Alternative display 20 Graphical 2 Vlait E 19 ASL 2007 ASL its leie e 22 Eeer 89 P PC command syntax 78 PC COMIMGONOS E 77 KIEREN 80 Ge ef titsiastostasesetceeiane 86 CONfFigure AMAF AERE
16. 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 2 System menu This menu displays useful information about dates and version numbers Press the 4 key on the numeric pad or use the up and down keys to navigate to the System Menu and press the OK key to access this menu The display will change to show 4 System Information Display Clock Calibration S Analogue 1 OK Presets Menu Clear LJ CL Press the 1 key or the OK key to display the system Information screen 41 Information Today 24th March 2007 Manuf ASL Model F600 S W Ver 1V1ih 22Mar2007 S No 008677 002 Calibrated on 01 2007 User data Valid Menu Clear CL LI Press the Menu key to return to measurement mode or the Clear key to return to the previous menu Page 43 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 3 Probe Review menu This menu is used to Review individual probe information All probes used on the F600 must have the correct data entered to accurately perform the resistance to temperature conversion Press the 2 key on the numeric pad or use the up and down keys to navigate to the Probe Menu and press the OK key to access this menu 2 Probes 1 Review 2 Edit A OK vy Menu Clear LC E Press the 1 key or the OK key to Review the previously entered probe data Probe identification is shown on the top line followed by the type 4 wire s and the resistance to temperature conve
17. 22 Probe Edit Probe ID 1 Name Prb01 Wire 4 Wire Conversion DIN 100 3 9083e 5 775e 07 4 183e 12 Edit More Menu Clear Press the Edit soft key to get to the following screen 2 2 P ro D P E d t 7 Edit field 4 Wire The probe data fields can now be edited Use the lt and P gt navigation keys to move the edit field the field with the C and brackets When the Wire and Conversion fields are current use the A and navigation keys to select the number of wires and conversion type For example using the key to move the edit field to the conversion entry and then using the A key twice will result in the display 4 14 Note that DIN is the default method and will be set if the clear function is used Page 48 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 22 Probe Edit ITS90 L LC CJ similar displays are shown for CvD and S amp H Now press the navigation key three times to move to the Bp field 22 Probe Edit Menu Clear L CL CJ The Bp field can now be changed using the numeric keypad Pressing the key followed by the 6 key will result in the following display Page 49 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 22 Probe Edit 24 24 6 775 e07 LC LJ CI Co CL CJ The remaining digits may be edited added or changed as required Insert Delete Exp Space The function of the various
18. AC Date of Manufacture INSTRUMENTS LTO Serial number Earth connector Electrical rating Expansion port 2 Figure 3 4 rear panel 3 6 1 Name plate and serial number The instrument s serial number is positioned here 3 6 2 Electrical rating plate The instrument rating information on the rear panel shows the instrument s input supply requirements fuse value and maximum power consumption 3 6 3 Mains input The mains input connector is situated on the left of the rear panel It uses a standard IEC connector and lead supplied The input connector has a switch and is fused The fuse s are located within the body of the connector Page 12 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 3 6 4 3 6 5 3 6 6 Expansion ports There are two expansion port connectors provided on the rear panel These connectors enable a multiplexer ourchased separately to be used to expand the number of input connections Analogue output The analogue output Output 1 provides a scaled measurement voltage 10V that may be used with a chart recorder The output can be scaled and offset to provide a voltage proportional to the current reading over the range of interest USB Communication interface connector The USB connector is fitted as standard see figure 3 4 Communication requires the installation of the USB driver on a PC See the separate information supplied on the CD A standard USB cable is supplied with
19. EE 13 4 SENSOR AND REFERENCE RESISTOR CONNECTIONS ccccccsseecenseecenseecnneesenseeeeaseeceaseseensesenseesenseess 15 DR a CoOnmneclon and guar pean ee nner ena eee nea een ee oe ASEE AE ER EEEE 16 Ala POC TIVO EE ee 17 Ala RESSO COMEN SEO CHO EE 17 Page iil ASL 2007 F600DC 14 001 2 F600DC User Manual ASL 5 OPERA ING THE E 19 5 Tesi al eet te e Lee ele 19 5 1 1 Measurement mode NOMAD EE 19 5 1 2 Measurement mode alternative disc 20 5 1 3 Measurement mode graphical Disp function kev 21 5 1 4 Measurement mode standby Disp function key 22 5 2 setting the instrument s operating CONGCITIONS ceeeccccecseeeeeeeeaeeeeeeeeeseeeeeeeesseeeeeeseeeeeeeeessaeeeeeeeeaas 23 Oil IOC FEC HOM RE 25 oo Eege EE 26 Onze PPC AIC HON CV eege EE 27 oad I IC OV EE 28 329 OCS TO KOV eet 30 EO TO NC OC erase cn tsar serene AARE AE AEE OAE AAE R EAEE AE EERS 33 927 CERO TUN CHOD KOY eege Eege 34 I TNC OY aaa circ A E oa terse une taate reads ona ed seat c nena A 35 5 2 8 Channel selee TOM BE 35 5 2 8 2 Reference resistor selecnon 36 5 2 8 3 tee lee WEE 38 EE Reegele REN 40 Di Monu EE 41 Ee DE TOSS TTI A EE 42 E OV SI e l EEEE E EEEE EA EE REEE 43 E e Proba Reve w EE 44 Ood PODST ONON rs cet eA aces caw E E AE E EAEE A 46 53 9 Channels EE erte 51 090 EE EIERE EE 52 DIF WISI VICI E A E EAE E E 57 Pa e ee ee 58 5 3 9 Calibration Internal RS MENU E 60 5 3 10 Calibration Factory Defaults men 63 5 3 11 A
20. The lt and gt symbols in the text are used to help with clarity they do not form part of the command sequence Page 78 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual CONF CURR 2 3 lt cr gt lt lf gt Le lt command gt lt gt lt command gt lt space gt lt parameter gt lt gt lt parameter gt lt terminator s gt It is important to remember the soace between the end of CURR and the 2 9 3 3 Case sensitivity Command words are not case sensitive you can use upper or lower case characters or any combination For example the following are all valid SYSTEM REMOTE system remote SYSTEM rEMOTE 9 3 4 Long form short form commands Command words can have a long form and short form Ihe short form version is indicated by Upper case characters in subsequent sections Either form may be used The following are identical SYSTem REMote long form SYST REM short form 9 3 5 Command terminators lt cr gt or lt cr gt lt lf gt All commands sent to the instrument must be terminated with a carriage return lt cr gt character Ihe terminating character pair lt cr gt lt lf gt may be used since the lt lf gt character is ignored 9 3 6 Startring with PC commands Experiment with the IDN commands when first starting and do not use the SYSTEM REMOTE command until you are happy with the instrument s operation2 Use each of the commands in turn to confirm that they produce the response you e
21. be used to Edit individual channel information Channels may be set to either measurement R or reference Rs Types Press the 3 key on the numeric pad or use the up and down keys to navigate to the Channel Menu and press the OK key to access this menu 3 Channels 1 Review 2 Edit A OK vy Menu Clear LC CI Press the 2 key or the W navigation and OK key to Edit the previously entered channel information 32 Channel Edit CH 00 Type Rt KE only fields l LI P Ref INTOO Se ZA Probe 01 DIN a Gain x0 4 Menu Clear LC LI LJ CL CJ The screen will look similar out with less information when the channel type is set To Rs Page 52 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual The two fields in rounded brackets are for information only they cannot be edited here Use the Prev and Next soft keys to move through the pages for all 99 channels Channels that have been entered will look similar to the example above Unused channels will look similar to The one below 32 Channel Edit CH 01 Type N A KEKEKKKKKKKKKEE kkkkkkkkkkkkkkk empty Prev Next Menu Clear L LI L CL CJ Used channels may be edited Press the More soft key to see the screen below 32 Channel Edit CH 00 Type Rt Ic 10 uA Gain x0 4 Ref INTOO 100K1 Probe 01 DIN Edit Delete More Menu Clear LJ LJ CI CL CJ No
22. editing soft keys is fairly obvious described by their legends If pressed the Insert soft key will change to Overtype and Delete will change to Backspace If Insert is then pressed it will revert to Overtype and Delete will change to Backspace The Insert key allows you to inset a digit and the Delete key to erase a digit The Space key inserts a blank digit The Overtype key changes the selected digit and the Backspace key moves one digit to the left if possible The Exp key is used to insert an exponent In edit mode the lt and gt keys move the cursor between digits Press the OK key after the edited value is correct this returns the action of the lt and P gt keys to moving between fields Press the Exit soft key once all the probe data has been entered and then press the Save key to save the probe data the Clear soft key will reset the current probe s fields to their default values Data entry is similar for the other temperature conversion methods Press the Menu key once you have entered all the data Note Failure to accurately enter the correct probe type and its associated calibration data will lead to inaccurate or wrong resistance to temperature conversion calculations Page 50 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 5 Channels Review menu A channel holds a complete instrumental setup under its identification number This menu may be used To Review individual channel infor
23. gt key will move it back to the right hand column Set Gain LJ L The Bridge s gain may be set to 0 4 0 8 1 0 2 0 4 0 8 0 10 0 20 0 40 0 80 0 100 0 or 200 0 Page 29 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 2 5 Curr ent function key Press the Curr function key to show the current selection menu Select the current setting you require using the soft key the A VW navigation keys or the numerical keypad the change to the current value is implemented immediately Press the OK key the Mode or the Clear key to return to normal measurement mode Use the lt P keys to move the navigation key selection between the two columns Note The current menu is slightly different to other menus since changing the setting on this screen does not immediately change its value This is because for example scrolling down from IMA through 10mA and back to 10uA may unacceptably increase self heating Two current tables are available and may be used in any combination So in the case shown below a total current of IMA is selected 1 0 x IMA Pressing 1 and 5 would give a new setting of 50 uA 0 5 x 100A Use as high a current as possible for your measurement remembering that if the current is set too high self heating effects in the probe or resistor may become significant Note that the instrument s performance will not be optimised if the current is set too low Set Current Page 3
24. on the thermistor type and specifications The F600 uses PRT and thermistor calibration data to overcome this problem and calculates the temperature from conversion functions using calibration data stored in the F600 s internal non volatile memory This method enables the F600 to convert ratio to temperature uniquely for each sensor used Applications requiring multiple thermometers may store up to 99 sets of calibration data in the instrument It is very important therefore that a sensor is Used on a properly configured input channel and that the probes coefficients are correctly entered Into the instrument Note Always check that the coefficients are correctly set for the probe being used Failure to do so will almost certainly lead to incorrect measurements system accuracy is a combination of the Bridge s accuracy in measuring the probe resistance to reference resistance ratio and the calibration uncertainty placed on reference resistors PRIS or thermistors by the calibrating laboratory ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 4 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 2 Setting up the F600 2 1 Safety information Please read the safety information section before attempting to operate the F600 2 2 Unpacking the instrument When you unpack the F600 bridge check that the following items are present before using the instrument
25. or exponential number Note that the values of Zero and Scale are unit less and will apply to the active channel s units Page 66 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual For example to set channel 19 to give 5V full scale output based around 1V i e a full scale output between 6V and 4V set the values to Channel 19 Scale 0 5 Limit High 6V Limit Low 4V Zero 1V Once you are happy with all the field entries press the Menu key to accept the value and return to Measurement mode or press the Clear key to return to the previous menu Page 67 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 12 Presets menu This menu is used to set alternative operation for the keypad shift key functions and may be used to set the adaptive AMAF filter when shift key operation is active Press the 4 key on the numeric pad and use the up and down keys to navigate to the System Menu and press the OK key to access this menu Use the navigation key to move to the Presets menu as shown below 4 System 1 Information 2 Display 3 Clock A 4 Calibration 5 Analogue 1 OK 6 Presets S Menu Clear Press the 6 key or the OK key to see the current values 46 Instrument Alt Function Menu Off Adaptive Filter AMAF Off Menu Clear LJ LI Press the Edit soft key to alter the values The screen will change to show Page 68 ASL 2007 F600DC 14 001 2 ASL F600DC User Man
26. resistor yet Page 37 ASL 2007 F600DC 14 001 2 F600 User Manual ASL The four internal reference resistors are predefined their values are 10 000 Q 100 000 Q 5 2 8 3 Probe selection Up to 99 probe selections may be made provided these have been entered Note Probe O def 00 is predefined as DIN and cannot be changed Pressing the Probe soft key will disolay a screen similar to the one below Temperature conversion method Probe name Probe Pb00 DIN def00 Highlighted A list of available probes will be shown Use the A V navigation keys to scroll the highlighted line up or down the list Press the OK key to select the highlighted probe or press 12 It is important to realise that the number in the field is only a reference value the actual value is entered via the calibration menu Page 38 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual the Chan key to select the highlighted probe and return to measurement mode alternatively press the Clear key to return without altering the probe Page 39 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 2 9 Disp function key The Disp function key does not have a menu associated with it The key is used to change VFD display modes Three display modes available e Normal measurement mode display e Graphical display e Standby VFD blanked Press the Disp key once to move between each of these modes See section 5 1 Note
27. 0 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Page 31 The F600 s currents may be set to 10 uA 20 uA 100 uA 200 uA 1 MA 2 MA 10 mA 5uA 10uA 50 uA 100 uA 500 uA 1 MA 5 mA V2 x 10 uA V2 x 20 uA V2 x 100 uA V2 x 200 pA V2 x 1 mA V2 x 2 MA V2 x 10 mA The xV2 setting doubles the power in the probe or resistor and is useful when checking for self heating effects Pressing the 1 and 5 keys on the numeric keypad will show the display below Note that the Confirm legend has appeared above the 39 soft key this is used to prevent any menu changes from taking effect immediately Either press the Confirm soft key and note that the display will return to The one shown above or press the OK key and the display will return to the measurement mode Pressing the Curr or Clear key will return control to the top level measurement menu without altering the current value Set Current 1 0 5 Confirm 2 SQ 2 v 8 Lo The voltage supply from the current source is limited to 10V and the minimum F600 gain is 0 4 This means that the maximum current 10 mA can only be supplied to probes with resistances less than kQ ASL 2007 F600DC 14 001 2 F600 User Manual ASL The maximum current can be calculated from 10 0 max R max where imax is in MA and Rmax in KQ Rmax is the maximum value of the probe resistance that can be driven at a current of imax Set
28. 0DC 14 001 2 ASL F600DC User Manual 5 Operating the F600 5 1 Instrument operating modes The instrument has two operating modes e Measurement Mode which displays the measurement and the instrument status e Menu Mode which allows selection of operating conditions and its settings 5 1 1 Measurement mode normal In Measurement Mode the screen displays the current reading and Its units ratio resistance or temperature reference resistor value and type the current channel and probe selected and the instrument s gain statistics and the time of day are also shown This is the normal operating display for the F600 The display will look similar to the one shown below selected Current display functions Time of 3 selected units Selected EEN eu 12 o o 0 2 Prb 0 4 Ee em result Ic Ratio Selected current L Au 1 999999 int01 Zah OOR Difference and Mean 1 000000 number of OS ham Diff No_ 0 000001 1342 ES readings rd Gain Max 1 000000 ER Yeo sti Al Min 0 999999 _ Std Dev 0 00100 Sess gain setting Statistical results Figure 4 1 F600 display screen The currently selected channel and probe here 0 is the default for both are always shown at the top left of the display However measurements are still disolayed in menu mode whenever possible 7 The display may be toggled between this view and a graphica
29. ASL F600DC User Manual DC PRECISION THERMOMETRY BRIDGE F600 Precision DC Thermometry Bridge User Manual Issue 2 0 g ISCH lsotech North America 158 Brentwood Dr Unit 4 Colchester VT 05446 Phone 802 863 8050 Fax 802 863 8125 sales isotechna com www isotechna com This manual supersedes all previous versions please keep for future reference Page ASL 2007 F600DC 14 001 2 F600DC User Manual ASL Revision history Original version 23 March 2007 Issue 1 Previous releases Provisional copy only for internal review Issue and date Description of change Issue 1 1 8 May 2007 Fuse rating changed from 2A to 3A USB and PC command information added Analogue output information added Minor typographical changes Issue 2 0 6 June 2007 Added information on modified editing keys Minor typographical changes Revised channel menu and shift keys described Page il ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Contents CONVENTIONS USED IN THIS MANUALL cccccesseccenseeceneeceneeceaseeceasescoaseseaaseseassenoaseesoaseseeasesensesenseesonses Vil CS O MONU EE vil Italie te ee E vii WV OIC S OEN I CS een e E EE E E E R A EE E E E EEE E EE E EE vii IMPORTANT SAFETY INFORMATION eege VIII IMPORTANT INSTALLATION INFORMATION ccceseecceseecenseecenseecensesceaseseassesonseecoaseeseaseseeaseseansesonneesonseesons X IMPORTANT PROBE SAFETY INFORMATION ccc
30. ASL 2007 F600DC 14 001 2 F600 User Manual ASL Either press the Rt amp Probes soft key or the Rs soft key For example pressing the Rt key will show 442 Set Factory Defaults To confirm overwrite of the Rs Calibration Press OK key Any other key to abort OK To Exit Press Menu again Rt amp Probes Menu Clear LJ LJ LC CJ Either press the OK or any other key to prevent overwriting If the OK key is pressed then the following screen will be seen after a few seconds 442 Set Factory Defaults To confirm overwrite of the Rs Calibration Press OK key Any other key to abort Writing Complete OK To Exit Press Menu again Rt amp Probes Menu Clear L L CL CJ Press the Menu to exit or press the Cancel key to return to the previous menu Page 64 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 11 Analogue output menu This menu is used to set the analogue output scaling and offset values for the F600 Bridge Press the 4 key on the numeric pad and use the up and down keys to navigate to the System Menu and press the OK key to access this menu Use the navigation key to move to the Analogue 1 output menu as shown below 4 System 1 Information 2 Display 3 Clock A 4 Calibration 5 Analogue 1 OK 6 Presets m Menu Clear Press the 5 key or the OK key to see the current values 45 Analogue Type O P Measurement Channel 00 Scale 10 000 Units V A
31. O 88 AMAF usgan 88 PD RE 83 AOUT ccenn 84 CURREN ros sel e EE RE 8 RET aaan i 82 gS Cae ee ee 83 GAIN E 8 EC EC 82 REFETENCG EE 84 REFEreNnCe wives 84 MEASURE FE Cal ai 87 REA E KEN 86 DAC EE 84 Vie KEN 85 SYSTem EE 6 a BEE 80 REMOTE ccce 80 UNIT TEMPerature cnn 87 TEMPerature an 87 WE 68 Probe edit mem A6 Probe review Ten 44 Probe safety information xi R Rating plate eerren 12 Readr DANE NNN 12 Remote mode 78 Reset factory defaults 63 Resistors 2 terminal resistors 17 4 terminal resistors 16 F600DC 14 001 1 ASL Rs GEPINITION crasma 2 Rt CEPINITION sacr 2 S Safety INfFOrmMAtION ss viii SeriAl NUMDET errre 12 Se 96 DS HMO WD OT 5 Shift key Operation ns 68 Seele Uu en 91 Page 105 STATISTICS mem 42 Steinhart amp Hot n 103 System i NfOrMOAH ON n 43 SYSTEM MENU rren A3 T Technical support 96 U UNPACK NQ BE 5 ASL 2007 F600 User Manual UES E 13 77 USB driver sser 77 V VFD dBEIO Y nexecevesecertsiacscncaiecs 8 W WV GIGI EE 96 F600DC 14 001 2
32. The front panel is shown below figure 3 1 with the various controls and connections Reference channel Rs VFD display Navigation keys E EECH dE DC PREC AON THERMOMETRY BRIDG _si AISIL See ee ta heii Se MV VM Gil Screen Fit Rs AS p e et SSS SSS aaa Input channel Rt Numeric keypad LED indicators Figure 3 1 front panel The graphical display is situated roughly in the centre off the instrument The electrical input connections are situated to the left of the front panel The two indicator LEDs to the right are used to indicate that electrical power is applied and to indicate that the bridge is in standby mode graphical display in low power mode The various controls connectors displays and keys are described in detail in each of the following sections The four keys under the display are soft keys so their function varies with the instrument operating mode whenever these keys can be used their current function is be displayed above each key Page 7 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 3 2 About the VFD display screen The large graphic VFD Vacuum Fluorescent Display screen is your direct link to the instrument presenting you with the measurement results and information relating to them and also to the menus to set and control the instrument The VFD screen is designed for ant reflective viewing under normal ambient lighting
33. a screen similar to the following one 32 Channel Edit CH 24 Type N A kkkkkkkkkxkkxkk kkkkkkkkkkkkkkk empty New Rt New Rs Menu Clear LO LI L CL CJ Press New Rt to create a new Rt channel a default set of parameters will be entered Alternatively if New Rs is pressed a default set of parameters for the Rs channel will be entered For example if the New Rt soft key is pressed the screen will change to Page 55 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 32 Channel Edit UNSAVED CH 24 Type Rt Ic ImA Gain x0 4 Ref INTO1 100R A Probe 00 DIN 4 OK gt vy Save Cancel Menu Clear L LI O CJ Press either the Save or Cancel soft keys as required Pressing Save soft key will enter a new Rt channel the default values can then be edited The display will look like the following if New Rs is pressed 32 Channel Edit UNSAVED CH 24 Type Rs Value 100 100R A lt OK p v Save Cancel Menu Clear L LI O CJ Press either the Save or the Cancel soft keys as required Pressing Save soft key will enter a new Rs channel the default values can then be edited Press the Menu key to return to measurement mode or the Clear key to return to the previous menu Page 56 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 7 Display menu This menu is used to set the desired display brightness level Press the 4 key on the numer
34. as required before pressing the Exit soft key The screen for example will change to show 441 Internal Resistors Rs 00 25 25R 01 100 1012 100R1 02 10000 10KO 03 100000 100KO Save Clear Menu Clear LC LI CL CJ Press the Save soft key to keep the changes or press the Clear soft key to prevent any changes from being applied Press the Menu key to end editing or the Cancel to return to the previous menu The nominal internal resistors values fitted as standard are 25 ohms 100 ohms 10 kohms and 100 kohms Note The calibration values are held in non volatile memory inside the F100 The instrument MUST be switched off and on again for the new calibration values to take effect Page 62 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 3 10 Calibration Factory Defaults menu This menu clears the factory default settings for the internal resistors and probes and also for the external references Note Use this menu with care ALL values entered into the F600 will be cleared Press the 4 key or the OK key to see the calibration menu 44 Calibration 1 Internal Resistors 2 Set Factory Defaults OK Menu Clear CL CJ Press the 2 key or use the navigation keys and press the OK key to select the Set Factory Defaults menu 442 Set Factory Defaults OK To Exit Press Menu again Rt amp Probes Menu Clear LJ L CL CJ Page 63
35. caessecesseauesecessaaeesecessaaeesecesseas 81 vAr CONO 1 EE 82 GAO e e 82 GE e 83 9 4 10 CONFigure AOUT lt type gt lt channel gt lt scale gt lt NiQ h gt lt lIOW gt lt ZElO gt sscscccscssseseeeeseeeeeeeseees 83 94 11 EE 84 9 4 12 CONFigure REFErENCE lt source gt lt Channel gt iccccsssecccssessecnsenseccsanseensenseessenseessanaeessanseeenanaees 84 9 4 13 CONAI GO Fee Cl OC lais e E NE E S EEE Ei 84 9 4 14 CONFigure MODE lt INOOS gt Eege bade 84 9 4 15 CO O MODE ebe 85 9 4 16 MEASure CHANNel eseu eg ege ee eech 86 9 4 17 MEASure READ saciusiannedetaanaundedvaerenastaensdebsasrsdetacsregetieavscnabcnnedetsansigtieanestedaevesasaorsdebiaenideiaenietent 86 9 4 18 MAET e EE 87 9 4 19 Ne e E 87 94 20 UNT ITEM EE 87 94 21 CO INFIOUIC AVIA GV CUA S sc EE Ed EE 88 9 4 22 CONFigure AMAF eege 88 OPHONS AND ACCESSORIES E 89 10 1 PGC 55 OMS os ee 89 Elle leie nl LEE 91 11 1 Resistance thermometer measuremMent s s nsnsosnrenrorrrnrrrrrrnrrerrrarrenrrnrrrnrrerernrrerernrrrnrrerernerenernnrener 91 lee DEDO EE 92 Iio e te ere E ee EE 92 FA EE 92 ele 92 11 6 Dimensions and Te 92 CLEANING AND MAINTENANCE ccccccesseccenseccenseecnneeceseecoasesceaseseaaseseasseseaseeconsesoeasesennsesenseesons 94 12 1 SET ee e EE 94 IC Welle ee 94 SERVICE AND WARRANTY EE 96 13 1 NECN GC GUIDO E 96 APPENDIX 1 FIRMWARE HEITE gege aen deeg ARCeeReEEN EEN NES Eed dee 97 14 1 Howa UO GCE SS ee EEEa aE ENE EEEE 97
36. connectors The BNC input connectors are located to the left of the display The central connector is used when a screen connection is required The two right hand connections are only used when an external reference resistor is selected they are not required when one of the internal reference resistors is used The unknown resistance or probe is connected to the left hand BNCs Connections are described in detail in section A Unknown resistance External reference to measure _ screen connection shield Figure 3 4 input connections The inputs accept Passive probes Passive probes do not contain calibration information and the F600 must be set up with calibration information for each probe used unless the calibration calculations are done externally Up to 99 sets of probe information can be stored simultaneously in the F600 Bridge Page 11 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 3 6 Rear panel The rear panel is shown below with the various items and connectors indicated Mains input switch and fuse USB connector Expansion port 1 Analogue output R Analogue 1 O P 10Vde ie Analogue 2 Expansion Port OP 10Vde Parallel Interface C Bandwidth 1Hz Expansion Port Senal Interface Manufactured inEngand by D ms Laboratories ey 275 Hing Henry s Orve New Ad dngton Croydon CAO ORE ASL A OMIEKIN OF S5VA max Beral Number HRATEST PARIERI FUSE T2A 2507
37. e low side of the resistor and cable inner conductors Additional guarding is provided by the guard circuit This drives the tail of the bridge so that the common point of Rs and R is held at virtual ground potential This common point is the low point of each resistor Hence the high points are at opposite ends of the bridge and are each driven but with opposite polarity Although the low point of the resistors are held near earth potential by the guard amplifier this is not a true earth and electrical connection other Page 16 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual than the two bridge cables should be avoided Where connections cannot be made directly to the resistor assemblies it is recommended that the join between the resistor leads and the coaxial cables is made with the FA 3 adaptor box Flying leads from the resistor assemblies should be twisted in two pairs the current I leads together and the voltage V leads together 4 1 2 Two terminal resistors Two terminal resistors can be used with the Model F600 Bridge Two terminal resistors must be converted to four terminal devices to take full advantage of the instrument s performance The connector leads should be soldered on to each lead of the two terminal resistor as shown in Figure 4 3 Standard coaxial cables should be used for connection to the F600 Bridge In the case of a two terminal thermometer the FA 3 adaptor box should be used The thermometer lead
38. e proper treatment recovery and recycling of the product If you wish to discard the product then please contact your dealer supplier or representative who will advise the correct procedure for disposal Disposing of the product correctly will help to save valuable resources and prevent environmental damage Outside the European Union The symbol only applies within the European Union If you need to discard the product then please contact your dealer supplier or the local authorities and ask for the correct method of disposal Page xii ASL 2007 F600DC 14 001 2 ASL F600DC User Manual This page is intentionally left blank Page xiii ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 1 0 Introduction 1 1 Overview The F600 Precision Thermomeftry Bridge is a high precision instrument designed for laboratory commercial and industrial temperature measurement and calibration applications The F600 operates with all 4 wire Platinum Resistance Thermometers PRIs and with virtually all thermistors Features include e Internal or external reference resistors e Alarge graphic VFD display for excellent viewing of measurement values and instrument settings e USB communication interface as standard for automated monitoring and calibration applications e Calibration against traceable external standards e User selectable units ratio resistance or temperature display Q C F or K e Wide operat
39. emote scanner Current source for SB 148 unselected PRTs Four oven controlled reference resistors for systems applications 1 10 25 amp 100 ohms Oil filled Standards resistors 1 10 25 100 amp 1000 ohms Laboratory Reference Resistors 1 10 25 100 amp 1000 ohms Thermal enclosure for RW amp RR resistors Page 89 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 90 ASL 2007 F600DC 14 001 2 ASL 11 Specifications F600DC User Manual 11 1 Resistance thermometer measurement2s PRT characterisation Thermistor characterisation Resistance measurement range Temperature measurement range Display resolution Accuracy ratio 24 Accuracy resistance Accuracy temperature sense current sense current multipliers User selectable measurement display Internal reference resistors Internal reference resistors thermal stability Internal reference resistors accuracy Inout channels Inout connection Expansion port optional ITS90 Din90 BS EN60751 1996 IEC60751 1983 CvD BSEN1904 1984 IEC751 1983 Steinhart and Hart NTC O to 500 000 ohm ITS90 200 to 962 C Dino 200 to 850 C CvD 150 to 850 C Thermistor type dependent 0 1 mK 3ppm 20 C 5 C 0 8mMQ 20 C 5 C IMK 20 C 5 C 10A 20uA 1004A 200uA IMA 2MA 10 mA 0 5 and v2 Ratio C F K or ohms 259 100Q 10KQ 100KQ 0 5ppm C 0 01 uncalibrated
40. er your name and the name of your company2e 25 Provided on the CD with the instrument 26 The same download program can be used to update F200 firmware Page 97 ASL 2007 F600DC 14 001 2 F600 User Manual ASL e This will create a shortcut icon on the desktop called ASL Downloader Click on the ASL downloader icon to run the downloader program Select the F600 Instrument option e Click on the Help button Firmware Downloader x FIRMWARE DOWNLOADER Firmware File Firmware Downloader Select Instrument Select C F200 F600 Firmware Version Status Ready Progress e Read the instructions and follow the instructions provided to update the instrument s firmware Page 98 ASL 2007 F600DC 14 007 1 ASL F600 User Manual 15 Appendix 2 Callendar van Dusen 15 1 Callendar van Dusen equation CvD Platinum Resistance Thermometers PIs are one of the most linear temperature sensors that we have Even so the relationship between resistance and temperature is not entirely linear and so it is necessary for the conversion from resistance to temperature to allow for this The IEC751 standard provides an equation that can be used to convert resistance to temperature taking info account the small non linearities of the PRT R R _ i Att Bt C t 100 05 Where R is The resistance at temperature t and Ro is the resistance at 0 C The coefficients A Band C C
41. eseccesseccensecenssesenseecenseeceasescansesoaseecoaseecoaseseensesenaeesenseesons Xl IMPORTANT DISPOSAL INFORMATION ccecccceneecceneeecnneecenseeceaseeceasesenaseeoaaseneaseeseaseeeoaseseeaseseaseseaseesonseess XII 1 0 INIR ODUC THON WEE 1 1 1 KEEN eegene erger 1 1 2 Definitions and TEPMINOlOQG ccccescccesessececeseeeeseesecescasaeeesouaeeesousesescasaeeesouaesesousaeetoasarsssouetsenusetensaes 1 1 3 PINCIDISS er Weg En EE 2 2 SENING UP THE eege 5 2 1 Sie nk ier Re d Le 5 22 Unpacking the instrument ccccceeececeeseceeseseeeesesecescasaceesoueeeesousecenoasaceesouaesensusesesoasaceesoueesetsusersnoaes 5 Zo Setting up temperature MEASUreMEN EE 5 2 4 STAG SIT Cree pee E P E NE E E E E E E E E ace neat steedeeneesne 6 A ABOUT THE F600DC PRECISION BRIDGE ccccccceeseeeenseeenseecenseeeenseseaseeseaseeeoaseseeaseseeaseseansesonneesenseess 7 KN ec 1 FeV ere et ME 7 3 2 About TS VFD CGI Sl E 8 ore Hite balyel Lee ue 8 SE CR E ee D acetates E oasis ee canst EAE E pa eee ne te nce A sean doe S ae 8 ne ro mms GE cy E 8 3 4 TIN ee e E E E E E E E 8 S Iwle Eug OM SS OG ees eet scent ste outer vs gee wh cane ter sec A E E ee ee pean catenin sen cineedeneesce ees 11 3 6 FSO UNS BEE 12 3 6 1 Name plate and serial ig 12 Dee ATT T E 12 Oi MS O eae e AA E EAE OAE TAREN AAEE AEA A EE AAO 12 EE EE EE 13 2309 EE Ee en pn ane a ee E eer eee 13 3 6 6 USB COMMUNICATION interface COnecCfor 13 GE
42. h connections to the BNC must be screened together and this outer screen is connected to the Screen connection Note The outer conductor of the BNC connectors is not at earth potential and should not be earthed Page 15 ASL 2007 F600DC 14 001 2 F600 User Manual ASL Sensor Reference Figure 4 2 connections when using an external reference resistor 4 1 1 Connection and guarding Two coaxial BNCs are provided for connections to each resistor The normal four terminal connection arrangement is shown in Figure 4 2 The lower coaxial connector of the Rt and Rs connector pairs is the current drive and should be connected to the resistors as shown A single braided outer conductor is driven from a low impedance source and effectively screens the returning Current on the inner coaxial conductor The upper coaxial connectors in Figure 4 2 are the voltage sense lines and should be connected to the resistors as shown The inner conductor is connected to the low point and the outer to the high point of the resistor i e the screen connects to the voltage terminal on the same side of the four terminal resistor as the screen of the current drive cable This point is the driven high point of the resistor The inner conductor is connected to the low point of the resistor and is at the same end as the inner conductor from the current drive cable In this way the outer cable screens are driven and provide screening for th
43. he display will change to show Page 58 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Current edit field DN v Menu Clear CL CJ The display has changed to show the and brackets around the current edit field the 17 43 40 time The lt and gt keys are used to move the cursor to the left or right edit the time and press OK press the Clear to exit without changing the time Use the numeric keypad to change the current edit field values The A and keys swap between time and date fields Press the OK key once the entry within the currently selected field is correct this returns the action of the lt and gt keys to moving between fields 24 03 07 e Menu Clear LC CL Once you are happy with all the field entries press The Menu key to accept the value and return to Measurement mode or press the Clear key to return to the previous menu without setting the clock Page 59 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 9 Calibration Internal Rs menu This menu is used to set the calibrated values of the internal reference resistors and to reset the F600 to its factory default setting Press the 4 key on the numeric pad and use the up and down keys to navigate to the System Menu and press the OK key to access this menu Use the navigation key to move to the Calibration menu as shown below 4 System 1 Information 2 D
44. he numerical keypad the change to the current value is implemented immediately Press the OK key the Mode or the Clear key to return to normal measurement mode set Units LJ The effects of the Units selection menu are shown in the table below vn pescnpton uncon oo jro Normal operation Show measured ratio nu Ohms Convert ratio to ohms and display 2 degC Convert ratio to celcius and display Convert ratio to farenheit and display nu kelvin Convert ratio to kelvin and display Page 26 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 2 3 Filter function key Press the Filter function key to show the filter Sample rate menu Select the sample rate you require using the soft key the A V navigation keys or the numerical keypad the change to the current value is implemented immediately Press the OK key the Mode or the Clear key to return to normal measurement mode Five averaging sample filters are available as shown below Select the one that best matches and is consistent with the physical time constant of the process you are measuring The longer the update interval the better the noise reduction however noise reduction is achieved at the expense of response to fast changing processes Sample Rate LJ The effects of the Filter selection menu are shown in the table below 20 second sample rate 20 second update rate 10 second sample rate 10 second update rate 2 second sam
45. hna com www isotechna com Page 96 ASL 2007 F600DC 14 001 1 ASL F600 User Manual 14 Appendix 1 Firmware update 14 1 Firmware updates ASL may decide to provide firmware updates from time to time These can be downloaded from the ASL website www aslltd co uk The procedure for updating the F600 is described in detail below A PC downloader soffware gt and USB cable are required 14 2 Firmware update disclaimer It is entirely your choice whether you choose to apply these firmware updates to your instrument ASL whilst taking the utmost care to thoroughly test both the firmware and the Update procedure can not accept any responsibility for any problem or loss resulting from the procedure 14 3 Firmware update procedure e Obtain a copy of the latest firmware from the ASL website www asllfd co uk and copy the file into the directory indicated by the instructions on the website e Run the program CDM_Setup exe from the directory D Downloader replace the D with the name of your CD device if necessary This will install the USB drivers You will see the following message once this is complete x i FTO CDM Drivers have been successully installed OK e Install the downloader software on your PC by running the program INSTALL EXE from the directory D Downloader replace the D with the name of your CD device if necessary Follow the installation procedure instructions which require you to ent
46. hows a record of measurements The display automatically scrolls to the left once the initial x axis period has been displayed starting from the left hand y axis i e the 9 The x axis scale depends on the filter setting time between samples 6 minutes for a 2 second update rate Page 21 ASL 2007 F600DC 14 001 2 F600 User Manual ASL most recent value is disolayed on the right hand side Ihe F600 automatically rescales the y axis when necessary Pressing the Disp key will change from this mode to Standby mode Pressing it again will change the display back to normal Measurement mode 5 1 4 Measurement mode standby Disp function key Press the Disp key to change the display from graphical display mode to Standby mode see section 3 3 2 Press the Disp key once more to return to normal measurement mode Page 22 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 2 Setting the instrument s operating conditions The most commonly used keys are grouped together at the top of the front panel into nine Specific Function keys These keys are used to select the instrument s operating mode Function key operations are generally independent of each other 9 As an example press the Units key and the display will change to the following one Function Current option e S P J A OF Set Units a other options 0 Ratio A Z 1 Ohms BZ 2 Deg C4 3 Deg F 4 K l 8 o elving S
47. ic pad and use the up and down keys to navigate to the System Menu and press the OK key to access this menu Use the navigation key to move to the Display menu as shown below 4 System Information Display Oc Calibration Analogue 1 OK Presets Menu Clear Press the 2 key or the OK key to get to this screen 42 Brightness Level 80 A Change Up Down Keys Exit Press Menu again v Menu Clear O LI Use the A and VW navigation keys to set the brightness to the desired value Press the Menu key to accept the value and return to measurement mode or the Clear key to return to the previous menu Page 57 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 8 Clock menu This menu is used to set the current date and time Press the 4 key on the numeric pad and use the up and down keys to navigate to the System Menu and press the OK key to access this menu Use the navigation key to move to the Clock menu as shown below 4 System 1 Information 2 Display 3 Clock A 4 Calibration 5 Analogue 1 OK 6 Presets 8 Menu Clear Press the 3 key or the OK key to set the time and or date 43 Set Time Time hh mm ss 17 43 40 Date dd mm yy 24 03 07 OK Refresh Menu Clear LJ LJ LC LI The Refresh soft key is used to show the current time and date time and date are frozen on entry so that they can be easily edited Press the Change soft key to alter the settings T
48. ighlighted line and return to measurement mode alternatively press the Clear key to return without altering the channel Note Note that the OK key immediately selects the highlighted line but does not return to normal measurement mode allowing you to individually view and select other channels easily 5 2 8 2 Reference resistor selection One of four internal reference resistors or up to one of 99 external reference resistors may be selected Note External reference resistors are entered as R channels Pressing the Rs soft key will display a screen similar to the one below Page 36 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Nominal resistance Actuall resistance Int 25RO 25 0041 Highlighted A list of available reference resistors will be shown Use the A W navigation keys to scroll the highlighted line up or down the list Press the OK key to select the highlighted reference resistor or press the Chan key to select the resistor and return to measurement mode alternatively press the Clear key to return without altering the reference resistor As an example once the highlighted line has been scrolled down four times the display will change to one similar to the screen below Ch8 undefined This screen shows that two external reference resistors have be added to the instrument channels 6 and 8 but that channel 8 has not had an actual value entered for the reference
49. in sub ranges so that the calibration of a PRI can be terminated at almost any fixed point This provision allows primary calibrations to be carried out with suitable PRIs over reduced ranges 27 Note that each of these fixed points has an uncertainty associated with it Page 100 ASL 2007 F600DC 14 001 1 ASL F600 User Manual and will be of special importance to metrology standards departments which need to make precise measurements at ambient temperatures e The part of the ITS 90 scale which may be measured by PRIs extends from 83 8058 K 189 3442 C to 961 78 C The actual range of temperatures which may be measured depends on the type and range of the PRI used The ITS 90 scale requires the entry of 6 constants into the F600 before the instrument can accurately convert resistance to temperature for a particular PRT The constants are conventionally called oo Ap Bo Cp Do An Bn and W Page 101 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 17 Appendix 4 DIN standard 17 1 DIN 43760 1980 IEC 751 The DIN standard uses defined values for the conversion of resistance to temperature using the Callendar van Dusen equation No data entry for the probe is required since the coefficients are predefined The DIN coefficients are defined as Ro 100 ohms A 3 90802 x 10 3 B 5 802 x 107 C 4 2735 x 10 12 The F600 will provide accurate resistance to temperature conversion based on these values
50. ings Example CONF AOUT lt cr gt lt lf gt command 0 02 10 00 5 00 5 00 1EOQl lt cr gt lt Ilf gt response returns the active channels AOUT setting 9 4 12 CONFigure REFerence lt source gt lt channel gt Command CONF REF lt source gt lt channel gt CONFIGURE REFERENCE lt source gt lt channel gt Returns None Parameters lt channel gt O to 99 single channel measurement lt source gt INT Internal EXT External Function Sets the channel to use this reference type Aborts the current measurement cycle Clears the last measurement from the display Clears the output buffer Example CONF REF lt space gt INT 0l lt cr gt lt lf gt sets the selected channel s reference to internal 01 standard 9 4 13 CONFigure REFerence Command CONF REF CONFIGURE REFERENCE Returns lt source gt lt channel gt Function Returns the active channel s reference setting Example COMF FILT lt cr gt lt lf gt command O1l lt cr gt lt lf gt response returns the reference for the active channel as Internal ChQ1 9 4 14 CONFigure MODE lt mode gt lt test gt Command CONF MODE lt mode gt lt test gt Page 84 ASL 2007 F600DC 14 001 2 ASL Returns Parameters Function Example F600DC User Manual CONFIGURE MODE lt channel gt lt test gt None lt mode gt O Reserved Reserved lt test gt O Reserved selects the specified instrument measurement mode Aborts the current measurement cycle Clears
51. ional range to include all 4 wire thermometers with Ro values from 0 25 ohms to 1000 ohms e Rack mount option e Expandable to allow multi channel input multiplexing e Up to 99 probe calibration configurations e Upto 99 channels instrument setup configuration Overall system accuracy depends on the reference resistor quality and calibration see the specification section Resistance ratio measurement accuracy is better than t3ppm at 20 C 2 C equivalent to a temperature measurement precision of lm 1 2 Definitions and terminology i 0 C 273 15 K li 1 mK milli Kelvin 0 001 C Cone milli degree Celsius il 1 milli cdegree C 0 001 C Im C ImK 1 8m F Page 1 ASL 2007 F600DC 14 001 2 F600 User Manual ASL iv 1 milli degree F 0 001 F 1m F 0 56mK 0 56m C V Alpha or a is the temperature coefficient or temperature sensitivity of the platinum wire used in PIs In general the higher the alpha value the better the PRT thermometer measurement reproducibility stability and performance vi Abbreviations for platinum resistance thermometers include PRT Platinum Resistance Thermometer Pt100 PRT with nominally 100 Q resistance at 0 C RTD Resistance Temperature Device Vil Abbreviations for thermistor thermometers include therm viii System accuracy refers to the overall combined accuracy of the F600 and thermometer 1 3 Principles of measurement The F600 measures the vol
52. isplay 3 Clock 4 Calibration 5 Analogue 1 OK 6 Presets v Menu Clear Press the 4 key or the OK key to see the menu 44 Calibration 1 Internal Resistors 2 Set Factory Defaults OK Menu Clear CL LI Press the 1 key or the OK key to see the calibration menu for the internal resistors Page 60 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 441 Internal Resis tors XXRX 100R 10000 10KO 100000 100KO Menu Clear Nominal value Actual value Press the Edit soft key to adjust the internal calibration resistance values The screen will change to show Current edit field LJ LC CJ Work out the adjusted resistance value that must be entered based on the actual Menu Clear calibration resistor value This is most easily done by first setting the internal calibration value Rint to The Nominal resistor value ver Measuring the value Robs and then entering the calibration resistance value calculated from Internal R Nom Obs 16 Note that these will be recorded on the test certificate that comes with the instrument Page 61 ASL 2007 F600DC 14 001 2 F600 User Manual ASL The editing process is identical to the one used in section 5 3 4 Edit the current field and note that the nominal field will automatically be adjusted to follow it 3 significant digits shown Press the OK key once you are happy with the new value Edit the remaining values
53. l display using the Disp key Page 19 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This display always reflects the operation of the instrument showing the current reading and settings Readings are updated at the selected conversion rate of once every second to once every 20 seconds 5 1 2 Measurement mode alternative display There are four soft keys are under the display Ihe action of these keys is context sensitive their action generally depends on the text above them on the screen Two of these keys left hand side are active when the display is in normal measurement mode The far left soft key toggles the screen between Gain and Filter display see above and below Rate SS LJ 8 Depends on the filter value selected Page 20 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual The other active soft key second to left in normal measurement mode toggles between normal measurement mode and the screen showing multiple unit conversions see below Ratio 0 021862 Ohms 218 6249 Deg C gt 318 511 Deg F gt 605 320 Kelvin 591 661 LJ 5 1 3 Measurement mode graphical Disp function key Press the Disp key to change the display from normal measurement mode to graphical display mode shown below CH 00 218 6321 R 218 640 Ce Current channel and reading 218 610 3 0 min Clear Figure 4 2 F600 graphical display mode The screen s
54. lcius MEAS FETCH lt cr gt lt lf gt command 203 456 C B lt cr gt lt lf gt response returns the balanced value of 203 456 C for the active channel 9 4 19 UNIT TEMPerature lt units gt Command UNIT TEMP lt units gt UNIT TEMPERATURE lt units gt Returns None Parameters lt units gt C or CEL Degrees Celcius F or FAR Degrees Fahrenheit K Kelvin R Resistance ohm s W Ratio Function Sets the active channel s units Example UNIT TEMP lt space gt CEL lt cr gt lt lf gt sets the active channel s units to celcius 9 4 20 UNIT TEMPerature Page 87 ASL 2007 F600DC 14 001 2 F600 User Manual Command Returns Function Example ASL UNIT TEMP UNIT TEMPERATURE lt units gt lt cr gt lt lf gt Returns the active channel measurement units Change current display unit UNIT TEMP lt cr gt lt lf gt Command C lt cr gt lt lf gt response returns The active channel s units as celcius 9 4 21 CONFigure AMAF lt value gt Command Returns Parameters Function Example CONE AMAF lt value gt CONFIGURE AMAF lt value gt None lt value gt O Off l Low Med High selects the specified filter without initiating a measurement Aborts the current measurement cycle Clears the last measurement from the display Clears the output buffer CONF AMAF lt space gt 2 lt cr gt lt lf gt sets the digital filter to medium 9 4 22 CONFigure AMAF Command Returns Function E
55. lt units gt lt flag gt lt measurement gt last measurement value lt units gt Current units for the active channel see below C Degrees Celcius F Degrees Fahrenheit K Kelvin R Resistance ohm s W Ratio lt flag gt B Balanced reading OK L too Low H too High Exx error state see below Exx Description EO Invalid reading E02 Open probe E03 Reserved E04 Ratio over range exceeds maximum value of 9 999999 EOS Ratio under range less than minimum value of lt 0 0000000 EQ6 Ratio not a real value i e divide by zero EO7 Reserved E08 Resistance over range E09 Resistance under range E10 Resistance does not compute to a real value ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Ell Reserved E12 Probe error E13 Invalid temperature calculation E14 Temperature above Limit EIS Temperature below Limit Function Returns the active channel s next measurement and settings Example MEAS READ lt cr gt lt lf gt command 0 999993 W B lt cr gt lt lf gt response returns the balanced ratio of 0 999993 for the active channel 9 4 18 MEASure FETCH Command MEAS FETCH MEASURE FETCH Returns lt measurement gt lt units gt lt flag gt Parameters see MEASURE_READ Function Returns the active channel s current measurement and settings with the currently selected units May be used to reread with different units Example UNIT TEMP lt space gt CEL lt cr gt lt lf gt command to set units to ce
56. mand ASL F60ODC 0000 1003 1V0 80March2007 response ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 9 4 4 CONFigure CURRent lt multfi gt lt base gt Command CONF CURR lt multiplier gt lt base gt CONFIGURE CURRENT lt multiplier gt lt base gt Returns None Parameters lt multiplier gt OU Multiply by Multiply by 0 5 2 Multiply by v2 lt base gt O Current set to Current set to 2 Current set to 100uA 3 Current set to 200uA 4 Current set to 5 Current set to 1 0MA 6 Current set to 2 0MA 7 Current set to 8 Current set to 10MA Function Selects the specified current without initiating a measurement Aborts the current measurement cycle Clears the last measurement from the display Clears the output buffer Example CONF CURR lt space gt 2 3 lt cr gt lt lf gt sets the active channel s current to 2 x 200uA 9 4 5 CONFigure CURRent Command CONF CURR CONFIGURE CURRENT Returns lt multiplier gt lt base gt formatted to 2 significant digits Function Returns the active channel s current setting Example CONF CURR lt cr gt lt lf gt command 02 03 lt cr gt lt lf gt response returns the active channel s setting of v 3 x 200uA 9 4 6 CONFigure GAIN lt multiplier gt lt base gt Command CONFE GAIN lt multiplier gt lt base gt CONFIGURE GAIN lt multiplier gt lt base gt Page 81 ASL 2007 F600DC 14 001 2 F600 User Manual ASL Returns None Parameters lt multiplier gt
57. mation Press the 3 key on the numeric pad or use the up and down keys to navigate to the Channel Menu and press the OK key to access this menu 3 Channels 1 Review 2 Edit OK Menu Clear LJ CI Press the 1 key or the OK key to Review the previously entered channel data Use the Prev Page not visible on the first page and Next Page soft keys to move between pages to review channel information The screen below shows that channel 00 system default and channel 05 have been set and their associated values Channel 00 probe number 42 is a 4 wire PRT for channel 00 using an internal 100R reference resistor and 1 mA on the Rt input Type Ic Ref Value Probe Rt imA O1i 100R0 4PRT42 kkkkkkkkxkk empty kkkkkkkkkkkkkxk kkkkkkkkxkk empty kkkkkkkkkkkkkxk kkkkkkkkkk empty kkkkkkkkkkkkkxk kkkkkkkkxkk empty kkkkkkkkkkkkkxk Rt imA 02e 10K00 4THMO3 RRR KKK KK empty eee ee eee ee ee kkkkkkkkxkk empty kkkkkkkkkkkkkxk kkkkkkkkxkk empty kkkkkkkkkkkkkxk kkkkkkkkkk empty kkkkkkkkkkkkkxk kkkkkkkkxkk empty kkkkkkkkkkkkkxk kkkkkkkkkk empty kkkkkkkkkkkkkxk Last Page Next Pagel Menu Clear CL CI Press the Menu key to return to measurement mode or the Clear key to return to the previous menu Page 51 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 6 Channels Edit menu A channel holds a complete instrument s setup under its identification number This menu may
58. ndog oulnu MEN aseeseen a a e e E a 65 OI EE 68 6 INSTRUMENT MEASUREMENT RANGE cccccsseecceseecenseecenseecenseseasseseaseenoaseesoaseseoaseseeasesenssesonseesonses 71 6 1 Instrument measurement working FOANGGC cccccsecccscsecescssececceseceesceaeeesouseseseusaceesoueeeesoueeeesoueeeensees 71 6 2 Ke eene ue EE 71 7 CALIBRATING THE F600 EE 73 al FOUODC instrumen calbroliOl i sicrie inrer oai eei raie r Or irese iTS 73 7 2 SSE NS e BE 73 7 3 COMO OO CS EE 73 8 OBTAINING THE BEST FROM THE F600DC BRIDGE eee ceeeeeeneeeeeneeeeeneeeenneeseaseeeeaseseensesenasesenneesonses 75 8 1 POCE a A a E a 75 9 COMMUNICATIONS INTERFACE AND PC COMMAND 0 cccccesesseeceesseeeeensseeseeneeeseenseeseonnees 77 9 1 WINNS Un vee sarersose ce aaraise sescuioatestasars E testa danieustieaiteatsaeecdeotesauceaucaanpeasweenteateeantesenseatecarsceneneests 77 9 2 USB device lu 77 9 3 STORING AT PO COMMONS eserken EE A Aa Aer E EEE EE AAA NAE ERE AE ENERE 78 9 3 1 Remote mode local lockout EE 78 Aoa FROM IMINO eege ee YII E 78 Page iv ASL 2007 F600DC 14 001 2 ASL F600DC User Manual ED COG TEE 79 JaA Long EE 79 9 3 0 Command terminators lt r gt Ee 79 OO Llanina WIFE eege EE 79 9 4 USB We eler ee Rieger EE 80 I le E 80 Te OV Sg EE 80 GE Se EE 80 GE CONFIGUE CURRENT lt IMUlT gt ele E 81 re ame ee BE EE 81 94 6 CONFigure GAIN lt multiplier gt lt bASE gt o cccccscccccccseeseccesceesseccesesessecess
59. ng Clean the outside of the instrument with a soft clean cloth slightly dampened with mild detergent Do not allow water to enter the instrument Warning Never use alcohol or thinners as these will damage the instrument Never use a hard or abrasive cloth or brush Always disconnect from the mains supply before cleaning Warning Regularly insoect the mains cable and plug for damage 12 2 Maintenance Keep the instrument and its leads clean with occasional calibration checks In particular the connectors to the Rt and ks terminals should be kept clean to prevent leakage currents flowing Damaged cable and connectors are a common cause of poor and intermittent operation Page 94 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual This page is intentionally left blank Page 95 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 13 Service and Warranty F600 instruments and accessories unless stated otherwise are covered by a 12 month warranty on parts and labour from the date of dispatch from ASL provided the instrument has not been damaged in use or tampered with This warranty does not include costs incurred in returning the equipment to the factory for repair 13 1 Technical Support For all technical support repair warranty and service inquiries please contact ISCH lsotech North America 158 Brentwood Dr Unit 4 Colchester VT 05446 Phone 802 863 8050 Fax 802 863 8125 sales isotec
60. oftkeys Figure 5 2 unit selection example There are four parts to the screen The function description shows the currently selected menu in this case Set Units The currently set Selected value is shown in reverse video i e the Current units the other options are displayed below Note The instrument continues to measure in Menu mode Selecting one of the available options will change the instrument settings immediately with the exception of the current menu Four Soff keys are situated below the VFD There are three ways to change the current set value 10 Except in the case of the gain and current menus which are limited by instrumental considerations Page 23 ASL 2007 F600DC 14 001 2 F600 User Manual ASL e Method 1 Use the A and VW navigation keys to scroll the selection inverse video line through the available options e Method 2 Use the soft key under the menu to scroll the selection inverse video line through the available options e Method 3 Use the numerical keypad to set one of the available options for example pressing the number 4 will set the units immediately to kelvin Press the Units key the OK key in the navigation cluster or the Clear to return to normal operation All menus operate in the same way The Specific function keys are described in detail in the following sections Ihe default values are shown in each section Note that it is not necessa
61. opted there have been significant advances in the techniques employed in establishing temperature standards and in the measurement of thermodynamic temperature The ITS 90 scale has much improved continuity precision and reproducibility compared with IPTS68 The implementation of the ITS 90 scale according to its definition calls for significant changes in equipment and procedure compared with IPTS68 but lower uncertainties of calibration are achievable in all parts of the range However the instruments and equipment needed to implement the ITS 90 scale in calibration laboratories will be substantially the same Particular features are ITS 90 specifies the use of the PRI up to the freezing point of silver 961 78 C The platinum 10 rhodium platinum thermocouple is no longer specified for use in the scale though it and other noble metal thermocouples will continue to be used as secondary standards e New more precise fixed points have been introduced and mathematical procedures for calculating resistance temperature equivalents have been revised so as to reduce the non uniqueness of the scale that is fo reduce the differences which occur between different identically calibrated PRIs In particular the calibration of a PRI can no longer be extrapolated beyond the freezing point of zinc 419 527 C but requires a measurement at the freezing point of aluminium 660 323 C e Alternative definitions are permitted in certa
62. ple rate Default 2 second update rate 1 second sample rate 1 second update rate L 4 second sample rate 4 second update rate Page 27 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 2 4 Gain function key Press the Gain function key to show the gain menu Select the gain settings you require using the soft key the A V navigation keys or the numerical keypad the change to the current value is implemented immediately Press the OK key the Mode or the Clear key to return to normal measurement mode Use the 4 gt keys to move the navigation key selection between the two columns Two gain tables are available and may be used in any combination So in the example shown below a total gain of 0 4 is selected 0 4 x 1 Pressing 1 and 5 would give a total system gain of 8 0 0 8 x 10 Use as high a gain as possible for your measurement remembering that if the gain is set too high the system may not be able to cope with the full measurement range Ihe gain used will also depend on the probe current setting Use a gain setting that gives you use of the instrument s full dynamic range Gain 2 0 l nrobe x R nax Note The instrument s performance will not be optimised if the gain is set Too low Set Gain X 4 X A x 0 8 5 x 10 xi 6 x 100V E Page 28 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Press the lt key to move the column selection to the left Gee below The
63. rom areas where people could trip over them or become tangled in them v Do ensure the probe leads are kept in good condition Warning Because of the nature of the instrument probes can be excessively HOT or COLD during use Take suitable precautionary measures when handling probes Take care that you and other people working in the same area do not come into contact with the metallic probe or the insulating sheath near the probe which will also be hot cold Precautions apply both during use or when moving the probe from one position To another Warning Probes may be immersed in various chemicals during use Some of these chemicals may be dangerous or harmful even when the probe is cold Always assume that the probe has been used this way and DO NOT touch the probe without suitable protective clothing Page xi ASL 2007 F600DC 14 001 2 F600DC User Manual ASL Important disposal information If you are responsible for disposal then please note that this product may contain materials that are regulated in their disposal due to environmental considerations The presence of these materials is consistent with global regulations applicable at the time this product was placed on the market European Union This symbol means that the product to be disposed of should not be mixed with commercial or general household waste Used products must be treated separately in accordance with legislation that requires th
64. rsion method DIN The coefficients for the conversion method are shown below the probe type Probe identification details 21 Probe Review Probe ID 0 Name Prb n __Type and conversion Wire 4 Wire Conversion DIN mg RO 100 A 0 0039083 B 5 775e 07 C 4 183e 12 Prev ll Next Menu Clear 13 3 wire measurement is only available when using an external multiplexer unit Page 44 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Use the Prev and Next soft keys to move between pages to review information about all the current probes the pages are continuous so eventually by pressing the Next soft key you will return to the first page of information Press the Menu key to return to measurement mode or the Clear key to return to the previous menu Page 45 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 3 4 Probe Edit menu All probes used on the F600 must have the correct data entered to accurately perform the resistance to temperature conversion Press the 2 key on the numeric pad or use the up and down keys to navigate to the Probe Menu and press the OK key to access this menu 2 Probes 1 Review 2 Edit A OK vy Menu Clear LJ CI Press the 2 key or the OK key to Edit the previously entered or new probe data See the previous section for a detailed description of the screen Its layout is similar except for the addition of the More
65. ry to press the current function key or OK key to move to another menu simply pressing a function key will immediately move there Page 24 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 5 2 1 Mode function key Press the Mode function key to show the mode menu Select the data collection mode you require using the soft key the A VW navigation keys or the numerical keypad the change to the current value is implemented immediately Press the OK key the Mode or the Clear key to return to normal measurement mode Four adaptive moving average filters AMAF are available as shown below Selecting one of these will significantly reduce noise at the expense of response time However should the signal change significantly the moving average will reset Experiment a little to see which setting is best suited to your application select the highest value possible LJ The effects of the moving average filters are shown in the table below AMAF No filter Normal operation Medium filter Medium filtering 8 points ae Low filter Default Least filtering 4 points High filter Most filtering 16 points 11 Note that the mode key acts as a shift key if the alternative menu mode is operational Page 25 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 5 2 2 Units function key Press the Units function key to show the units menu Select the units you require using the soft key the A V navigation keys or t
66. s should be connected so as to link the two high terminals together and likewise for the two low terminals Sensor External Reference may or may not be connected Figure 4 3 modification for a two terminal resistor 4 1 3 Resistor current selection The normal resistor current setting is IMA higher and lower settings can be used To maintain the bridge within operating limits the IR voltage drop on the standard resistor should not 2 Note that the voltage sense connections should be soldered nearer to the resistor or sensor body than the current drive connections Page 17 ASL 2007 F600DC 14 001 2 F600 User Manual ASL exceed about 0 4 volts on minimum gain setting This limits the Rs resistor to about 400 ohms when using the 1mA current setting so that the V2 multiplier is still effective High value resistors must be operated with a lower current setting The R resistor value is limited to about 5 times the Rs resistor value Conversely low value resistors below 10 ohms may develop too small a voltage to give an adequate signal to noise ratio and a higher current settings may be required Inevitably for a given resistor higher currents lead to higher self heating effects The V2 current multiplier will cause a doubling of the power developed across each resistor and can be used with the other current settings to estimate the effect of self heating on the sensor or resistor being measured Page 18 ASL 2007 F60
67. saves the user from resetting the instrumental conditions every time a different set of operating conditions is required set up for the probe channels and calibration data is covered later in the manual 2 4 Getting started Read the manual thoroughly before using the instrument Unpack the instrument and allow to thermally stabilise before switching on particularly if the instrument is cold e Connect a 100 ohm resistor any type will do to the Rt terminals as described in section 4 Switch on and start measuring the ratio without changing any of the settings Change one setting at a time to familiarise yourself with each of the menus Start with the alternative display functions described in section 5 1 Next use the Units menu and try changing to C K and ohms e Follow this by systematically changing the other instrument settings Remember to reset each change until you are familiar with the F600 2 As supplied the F600 will be set for this measurement using the internal 100 ohm reference resistor Page 6 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 3 About the F600DC Precision Bridge This section introduces the features and functions of the F6OODC Precision Thermometry Bridge Each of the F600 Bridge s features is explained in turn Once the F600 has been set to your particular requirements all the commonly used functions are available using single key strokes 3 1 The front panel
68. st results from your instrument v Do ensure there are no draughts or forced air flow around the instrument e g from an air conditioning unit v Allow at least 40 minutes for the instrument to fully stabilise if switching on from cold less time is required if using external reference resistors v Do keep the operating environment stable v Do ensure the sensor leads and input connectors are free from dirt as leakage current will affect the results v Do ensure that you use an external regularly calibrated reference resistance for your most accurate measurements 8 v In common with best practice use a known stable calibrated resistor to take a measurement at the start and end of the day log the results v Select a suitable moving average filter medium or high values are suitable for most situations when the measurements are taken on thermally stable systems v Set the maximum current that your probe will stand without self heating becoming an issue v Set the maximum gain consistent with the probe current and maximum temperature resistance that you need to measure x Do NOT locate the instrument near a source of heat or in draughts x Do NOT locate the instrument near sources of electrical interference e g electric motors 18 The F600DC Bridge contains high quality and stable internal reference resistors however these are only specified to an accuracy of 0 01 with a thermal stability 0 5 pom C
69. t lt high gt lt low gt lt zero gt Command CONF AOUT lt type gt lt channel gt lt scale gt lt high gt lt low gt lt zero gt CONFIGURE AOUT lt type gt lt channel gt lt scale gt lt high gt lt low gt lt zero gt Returns None Parameters lt type gt O Measurement fixed lt channel gt O to 99 Which channel to apply to lt scale gt 1000 to 0 01 Scale factor in units volt lt high gt 10 0 to 10 0 Maximum output in volts lt low gt 10 0 to 10 0 Minimum output in volts lt zero gt Real or exo number Value to offset the output in units Function sets the analogue output parameters The output is based on the Current units Output V Measurement Zero Scale Note that the values of zero and scale are unit less and will apply to the active channel s units e g zero 10 0 scale 100 will adopt the units of the instrument Example CONF AOUT lt space gt 0 02 10 0 5 0 5 0 1 0 lt cr gt lt lf gt sets the analogue output voltage on channel 2 with a gain of x 10 symmetrically about 1 0 and limiting the output to 5V of full scale SO if CH2 1 1 the analogue 1 output 1 0V and if CH2 0 75 the analogue output 2 5V Page 83 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 9 4 11 CONFigure AOUT Command CONF AOUT CONF AOUT Returns lt type gt lt channel gt lt scale gt lt high gt lt low gt lt zero gt formatted to 2 places Function Returns the active channel s AOUT sett
70. t Range 6 1 Instrument measurement working range The instrument can detect the following conditions Open Circuit Probe Over Range measurement and Under Range measurement These conditions are shown by a message on the display 6 2 Measurement ranges Meer een ills Conversion Under Over Range Units Thermistor Range Temperature Thermistor dependent Measurement Units Conversion Under Over Range Units PRT Range Temperature CvD Page 71 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 72 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 7 Calibrating the F600 7 1 F600DC instrument calibration The F600DC bridge measurement technique used in the F600 is inherently very stable and linear However a small drift of the internal reference resistor may occur with time making periodic re calibration advisable Check calibration daily before and after use with known regularly calibrated reference resistors 7 2 Equipment Temperature controlled environment at 20 C 2 C set of stable calibrated 0 01ppm resistors 3 ranges 6 resistors 7 3 Calibration procedure See section 5 3 9 Page 73 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 74 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 8 Obtaining the best from the F600DC bridge 8 1 Procedure Please observe the following to obtain the be
71. tage V developed across the unknown sensor resistance Rt and the voltage Vs across a stable internal or external reference resistance Rs Ihe voltages are proportional to the resistances so the thermometer resistance is derived from R Rxt This technique achieves immunity from slow moving time and temperature drifts in the electronics as it is not affected by voltage measurement gain variations or current source fluctuations The reference resistor may be either one of the internal resistors fitted as standard or a reference resistor connected to the external Rs ports Either way the resistor must have a known calibrated value for an accurate determination of the thermometer resistance R In the same way that AC resistance measurement eliminates thermal EMF s switched DC achieves a similar advantage Switched DC works by reversing the current flow on alternate measurement cycles and taking the average value thereby cancelling any thermal EMF offsets from the final result When using PRIs the relationship between resistance and temperature varies slightly from one PRT to another Therefore no matter how accurately the F600 measures the PRT Page 2 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Page 3 resistance if the relationship between resistance and temperature for a particular PRT is not known accurate temperature measurement is not possible For thermistors the relationship depends totally
72. te PC commands These may be sent to the instrument via a simple terminal program22 through some programming interface from Excel or similar program or interactively with a dedicated program such as ULOG supplied by ASL 9 3 1 Remote mode local lockout The instrument may be set into Remote mode to prevent problems with simulfaneous control from a PC and from someone using the front panel keys In Remote mode the instrument can only be controlled over the interface since the F600 s front panel keys are locked out To enable Remote mode the instrument must be sent a Remote mode command see section 9 4 1 It is not necessary to be in remote mode to use any of the PC commands but care must be taken not to inadvertently change settings 9 3 2 Programming command syntax The programming command language is based on the SCPI command format Commands consist of one or more command strings containing some or all of the following Colon separates command words Question mark Command requiring a response space separates the command word from the first parameter shown as lt space gt in the examples Comma separates the parameters list Parameter lt parameter list gt Parameters list separated by commas Terminator lt cr gt or lt cr gt lt lf gt Terminates the line and the command For example the current may be set by sending the string 20 Anumber of these are available free on the Web 21
73. th instrument Alternative shift key operation which may be preferred is available via the Presets Menu see section 5 3 12 It may help to have the instrument to hand when reading through these sections Refer to section 5 for a detailed description of how to use the keys to operate the instrument Page 8 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual Page 9 Diso Chan Zero Hold Curr Gain Filter Units Mode JI Clear Figure 3 3 keypad detail The keypad is used to select the various menu options and to set the operating modes The commonly used keys are collected together in the top row The numeric keypad used to enter numerical values and may also be used to select sub menu options when these are shown on the screen Ihe Menu key Is used to select the remainder of the less frequently used options Ihe circular buttons are used to navigate through the menus A summary of the keys and their function is shown on the next page in table 3 1 ASL 2007 F600DC 14 001 2 F600 User Manual ASL Instrument functions keys Menu function keys Numeric keypad Numerical data entry Enters a numerical digit or selects a numeric menu Used during numerical data entry Decimal point Used during numerical data entry Table 3 1 summary of front panel key functions 3 Acts as the shift key when the alternative function menu is selected Page 10 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 3 5 Input
74. the instrument The instrument can be controlled through simple ASCII commands see later section and can transmit ASCII result data which may be recorded using a simple terminal program 3 6 7 Earth connector Page 13 The earth connector on the rear of instrument is Joined to the instrument s chassis and may be conveniently used to connect to other equipment particularly if the instrument is rack mounted 4 Units are selectable ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 14 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 4 Sensor and reference resistor connections The F600 Bridge is designed to operate with four terminal resistors or four terminal resistance thermometers and includes comprehensive guarding circuits Probe connection information for both PRIs and thermistors is shown below Two wire PRIs or thermistors must be connected similarly to four wire devices either at the sensor preferred for accuracy or at the input connector since the measurement method relies on accurately measuring the ratio of two resistors and since the bridge is limited to a 5 1 ratio the measured resistor must not be greater than 5 times the value of the reference resistor Sensor External Reference not used or connected Figure 4 1 connections when using an internal reference resistor The screen connection may be used when noise is an issue In this case bot
75. the output buffer CONF MODE lt space gt 0 lt cr gt lt lf gt outs the instrument into the normal mode of operation 9 4 15 CONFigure MODE Page 85 Command Returns Function Example Command Returns Function Example CONF MODE CONFIGURE MODE lt mode gt lt test gt lt cr gt lt lf gt select the specified instrument measurement mode CONF MODE lt space gt 1 0 lt cr gt lt lf gt Put instrument into auto with no test mode i e normal operation CONF MODE lt cr gt lt lf gt command 0 0 lt cr gt lt lf gt response returns with the instrument s setting of manual amp manual MEAS CHANNEL lt channel gt MEASURE CHAN lt channel gt None sets the instrument to the active channel specified Aborts the current measurement cycle Clears the last measurement from the display Clears the output buffer Continues measuring with this channel s settings MEAS CHAN lt space gt 23 lt cr gt lt lf gt makes channel 23 the currently active channel ASL 2007 F600DC 14 001 2 F600 User Manual 9 4 16 MEASure CHANnel Command Returns Function Example 9 4 17 MEASure READ Command Returns Parameters Page 86 ASL MEAS CHANNEL MEASURE CHAN Currently selected channel Returns the currently selected channel MEAS CHAN lt cr gt lt lf gt Command 23 lt cr gt lt lf gt response returns with the active channel of 23 MEAS READ MEASURE READ lt measurement gt
76. ual 46 Instrument Curent edit field Alt Function Menu Off A lt OK p gt vy Menu Clear CL CJ Editing Is similar to the previous menus Use the A and VW navigation keys to move the active edit field Move to the field that you want to change and press the lt and gt keys to alter the values within the field Once you are happy with the entries press the Menu key to return to measurement mode or press the Clear key to return to the previous menu Adaptive filter AMAF setting is described in section 5 2 1 The Alt Function Menu option allows some of the more frequently used functions to be accessed at the top level using a shift key and the decimal and minus keys gain additional functionality There are only two values for this field Off and On Once the option has been enabled On the Mode key will act as a shift key with the some of the function keys producing alternative operation Alternative shift key functions are shown below in blue Press the Shift key followed by the required function key to access alternative key operation Disp Chan Zero Hold Curr Gain Filter Units Mode LLL LEE Probe Sart Rs Exp 7 The alternative function list is briefly disolayed when the Mode key is pressed Page 69 ASL 2007 F600DC 14 001 2 F600 User Manual ASL This page is intentionally left blank Page 70 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 6 Instrument Measuremen
77. urrounding the text The first word within the box displays the type Warning or Note A Warning double box is designed to draw attention to an aspect that may cause danger to the user or damage to the instrument A Note single box is used to bring special attention to something important requiring action or avoidance Copyright 2007 ASL is a division of Hartest Precision Instruments Ltd All rights reserved Information in this document is subject to change without notice Reproduction or modification of the whole or any part of this document in any form without ASL s written permission is forbidden except for internal use by an authorised dealer or agent Customers may make copies for internal use only Whilst efforts have been made to ensure the accuracy of information presented here ASL can assume no responsibility for the accuracy of any information presented or the consequences of acting on this information ASL also disclaims any representation that the contents are current However ASL would be grateful for any comments on the layout accuracy or contents of this manual ASL shall not be liable for problems or damages arising from the use or misuse of items servicing equipment procedures or options supplied by other companies ASL 275 King Henry s Drive New Addington Croydon Surrey CRO OAE U K Tel 44 0 1689 800799 Fax 44 0 1689 800405 email info aslltd co uk Page vii ASL 2007 F600DC 14 001 2
78. w press the Edit soft key to get to the following display 15 Alternatively type in the channel number using the numeric keypad Page 53 ASL 2007 F600DC 14 001 2 F600 User Manual ASL I cunent eait eid 32 Channel Edit C H i 0 0 2 type Rt Ic 10uA Gain x0 4 Ref INTOO 100K1 Probe 01 DIN LJ LC CI The square brackets are shown around the first editable field Ihe editing functions and Exit Menu Clear procedures are now identical to those associated with probe editing see section 5 3 4 for complete details on changing and entering data Use the More soft key to return to the previous screen if necessary Edit the fields as required before pressing the Exit soft Ihe screen for example will change To 32 Channel Edit CH 00 Type Rt Ic 20 uA Gain x0 4 Ref INTOO 100K1 Probe 01 DIN Save Cancel Menu Clear LO LI CL CJ select Save or Cancel as required and the screen will change back to the one allowing you to select another channel for editing New channels may be entered used ones may only be edit or deleted Select an unused channel using the Prev and Next soft keys Ihe display will look similar to Page 54 ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 32 Channel Edit CH 24 Type N A kkkkkkkkkkkxkk kk kk kk kk kk Ak Ak empty Prev Next Menu Clear L LI L LC CJ Press More to see
79. when DIN conversion is selected for a probe Page 102 ASL 2007 F600DC 14 001 1 ASL F600 User Manual 18 Appendix 5 Steinhart amp Hart 18 1 Steinhart amp Hart thermistor conversion algorithm Nowadays thermistors provide inexpensive and sensitive temperature sensors for suitable many applications Ihermistors may be closely matched and may be interchanged the matching tolerance depends on the thermistor supplier There are many ways to convert the resistance of Negative Temperature Coefficient NTC thermistors into an equivalent temperature reading Ihe most popular of these is the Steinhart amp Hart S amp H equation The S amp H equation uses a three term polynomial to curve fit the thermistor s resistance to obtain an equivalent temperature values The S amp H equation is l C C In R C In R Y t Where JW is the thermistor s resistance in ohms and t is the absolute temperature in kelvin The constants C1 C2 and C3 are the S amp H values for the thermistor these will be provided on a calibration certificate Once these coefficients have been entered into the F600 the Bridge will provide accurate resistance to temperature conversion for the probe based on these values 28 Higher degree polynomials may be used but usually the S amp H three term polynomial is accurate to 0 01 C Page 103 ASL 2007 F600DC 14 001 2 F600 User Manual Index A Abbreviations Eege 99 eege 2 POG WE
80. xample Page 88 CONF AMAF CONFIGURE AMAF lt value gt Returns the digital filter setting CONF AMAF lt cr gt lt lf gt command Ol lt cr gt lt lf gt response returns medium as the digital filter s setting ASL 2007 F600DC 14 001 2 ASL F600DC User Manual 10 Options and Accessories 10 1 Accessories The following options are available for the F600 Part Number Description standard reference PRI Ro 25 5 ohms nominal 2 metre cable 125 650 1 4 wire plus screen with soade terminal connections Stem length 450mm quartz R100 Ro 1 8925 minimum Reproducibility 0 01K or better Range 189 C to 650 C Physically similar to T25 650 1 but with Ro 100 0 05 ohms T100 650 1 suitable for use in laboratory environments but not for general industrial applications Range 189 C to 650 C 125 660 1 secondary transfer standard PRT 25 5 ohm 4 wire with 4 metres connecting cable to spade terminals Range 0 C to 650 C Working reference PRT Ro 100 ohms 2 meter cable with soade T100 450 2 terminals Stem length 450mm stainless steel with quartz liner Range 100 C to 450 C Aloha 0 00385 T100 450 3 As T100 450 2 except Alpha 0 00392 Working reference PRT Ro 100 ohms 2 meter cable with spade T 100 600 terminals Stem length 460mm quartz Range 50 C to 600 C Alpha 0 00385 T0 25 962 High Temperature standards PRT Ro 0 25 ohms Range up to 962 C 10 channel automatic r
81. xpect from them 22 The SYSTEM REMOTE command is cancelled once the instrument s power is switched off and on again Page 79 ASL 2007 F600DC 14 001 2 F600 User Manual ASL 9 4 USB interface commands All F60OQ commands are described in detail in the follow sections Each command description follows a common layout 9 4 1 SYSTem REMote Command Returns Function Example 9 4 2 SYSTem LOCal Command Returns Function Example 9 4 3 IDN Command Returns Parameters Function Example Page 80 SYST REM SYSTEM REMOTE None Places the instrument in remote mode for USB interface control Displays Remote on the F600 Aborts the current measurement cycle Clears the last reading from the display Clears the output buffer Locks out the instrument s front panel keys SYST REM SYST LOC SYSTEM LOCAL None Returns the instrument to local mode Removes Remote from the instrument display Enables the instrument s front panel keys SYST LOC IDN lt manufacturer gt lt model no gt lt serial no gt lt firmware version gt lt manufacture gt ASL lt model no gt F600DC lt serial no gt Serial number of the instrument lt firmware version gt Current firmware version and date Reads the instrument s identification code consisting of the manufacturer name instrument model number instrument serial number firmware version and date IDN lt cr gt lt lf gt com

F600 Precision DC Thermometry Bridge

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