Atlas ESR and ESR User Guide
Contents
1. can be purchased from many retailers and directly from Peak Electronic Design Ltd or an authorised agent Battery types Suitable battery types include 23A V23A GP23A MN21 or a good quality 12V alkaline equivalent as used in many test instruments and automotive remote key fobs Battery access To replace the battery unscrew the three screws to remove the rear panel Remove the old battery and insert a new one taking care to observe the correct polarity Carefully replace the rear panel do not over tighten the screws Peak Safe Battery Disposal Scheme Please return your old analyser battery to Peak Electronic Design Ltd for safe and environmentally responsible disposal Page 11 ESR60 ESR70 User Guide August 2009 Rev 6 Appendix A Troubleshooting ESR value when probes are shorted is not close to 0Q Seems to be stuck ee a Display shows Display shows Display shows SaPede dieckarse Display shows Cause Possible Solution Perform a probe compensation It is possible that one or more probe connections has become broken Check all connections at both ends of the test leads This message is displayed if the Atlas ESR has detected that the attached capacitor may be exhibiting Soakage or Dielectric Absorption this is quite normal The instrument then ensures that the capacitor is very well discharged and helps to prevent voltage developing across the capacitor after the normal discharge p2. GB60 70 6 Atlas ESR and ESR Capacitance and Equivalent Series Resistance Meter Model ESR60 ESR70 Peak Electronic Design Limited 2004 2009 In the interests of development information in this guide is subject to change without notice E amp OE CE PEAK electronic design Itd ESR60 ESR70 User Guide August 2009 Rev 6 Want to use it now We understand that you want to use your Atlas ESR right now The unit is ready to go and you should have little need to refer to this user guide but please make sure that you do at least take a look at the notices on page 4 Contents Page IAPPOCUC HOM i ticdee wi oe iadneirls aiestien mea ateniec eeatiatess 3 Safety Considerations 55s daamarsasiscde iabareandeneiceareosateisedaheearedts 4 INDIE SORTER taseinsa cc hete sivanatuateasave a 5 Analysing CADACKOIS jos ssaseessassats tebareeronetessiareeen Gets aes 6 7 Typical yale sol BOR saantia n ty siaseees 8 Andible AlE sissies Sash S 9 Probe Compensation 2nche ein eee eins 10 Care of your Atlas ESR einion a catcher ed anatase 11 Appendix A Troubleshooting cecccecceeeeeeeeeeeeees 12 Appendix B Technical Specifications 13 Appendix C Warranty Information cccccceeeeeees 14 Appendix D Disposal Information cece 15 Page 2 ESR60 ESR70 User Guide August 2009 Rev 6 Introduction The Atlas ESR is an advanced instrument designed specifically for the analysis of capacitor equiva
3. e 8 ESR60 ESR70 User Guide August 2009 Rev 6 Audible Alerts Model ESR70 only The ESR70 unit can produce audible tones to assist the user The various tones are summarised below Condition Operation Sound Type Start Analysis Short Blip End Analysis Short Blip Measured ESR gt 40Q High Low Beep Barp Single Bell Ping Double Bell Ping Ping The audible alerts can be turned on or off the current status of which is shown on the start up screen when powering up the unit from off Atlas ESk Plus Atlas ESF Plus Enhanced Rx x f Enhanced Rx x Audible Alerts Enabled Audible Alerts Disabled You can switch this function on or off by holding down the on test button for about 2 seconds when powering up the unit from off Depending on whether the sound function was already on or off one of the following messages will be displayed to confirm that you have changed the sound mode Sound On f Sound OFF Page 9 ESR60 ESR70 User Guide August 2009 Rev 6 Probe Compensation To ensure good repeatable readings particularly for low values of ESR it may be necessary to occasionally perform a simple Probe Compensation procedure 1 Ensure the unit is switched off 2 Press and hold down the on test button for about 5 Frobe seconds until the following Comeensatiorn message is displayed 3 The unit will then ask you to short the probes together by Short Probes interlocki
4. is before attaching the test probes to the capacitor This ensures that the built in protection circuit is ready for any charge that may be present on the capacitor The Atlas ESR will start component Messur ins analysis when the on test button is pressed Caracilarnce The analysis typically takes under 10 seconds to complete depending on the characteristics of the capacitor If the capacitor is charged lt S0V the Atlas ESR will attempt to discharge the DIScharsirns a capacitor while showing the progress Capacitor W 23 of the procedure If the Atlas ESR cannot recognise the Fen circuit or component connected to the test probes or the capacitance is out of low capacitance range one the following messages may be displayed Caracitor value Loo hish Page 6 ESR60 ESR70 User Guide August 2009 Rev 6 Analysing Capacitors continued Once a valid ESR reading has been obtained the results are displayed If the presence of external circuitry did not adversely affect the capacitance measurement the capacitor value will also be shown If the capacitance could not be In Circuit determined the display will only show ESF 8 2710 the value of ESR measured In the event that ESR exceeds the maximum that can be measured the display may show 47 6 6rF In Circuit P260 00 ESF 26 00 The ESR measurement range is automatically determined during the analysis Typica
5. lent series resistance in or out of circuit In addition it will where possible display the capacitance of the device under test Summary Features e ESR measurement range 0 to 20Q 40Q for ESR70 e ESR resolution as low as 0 01Q e Capacitance range luF to 22 000uF e Can be used for low ohms resistance checking too e Integrated controlled discharge circuitry reduces the need for the user to manually discharge capacitors before test e Use in or out of circuit for ESR and low ohms resistance measurement e The ESR70 features audible alerts for quick user feedback of ESR test status e Automatic and manual power off Note The discharge circuitry exists to ensure that a charged capacitor is less likely to damage the unit For example if the capacitor under test has a potential of a few tens of volts across it the charge is removed automatically It is the user s responsibility to ensure that any dangerously charged capacitors are safely discharged before connection to the unit Page 3 ESR60 ESR70 User Guide August 2009 Rev 6 SELGEMA EO ELOLE WARNING This instrument must NEVER be connected to powered equipment components It is the user s responsibility to ensure that any dangerously charged capacitors are safely discharged before connection to the unit To allow the self protection mechanism to function always ensure that the Atlas ESR has completed any analysis before connecting the test probe
6. lly the resolution for ESR measurement is as shown in the table below ESR Value Automatically Nominal measured selected test current resolution Although the measurement resolution is generally determined by the absolute value of the ESR as shown in the above table low capacitance values can result in a poorer ESR measurement resolution ESR60 limited to 20Q ESR70 limited to 40Q measurement range Page 7 ESR60 ESR70 User Guide August 2009 Rev 6 Typical Values of ESR It is not possible to provide a definitive rule for values of ESR that are acceptable for all situations The expected value of ESR largely depends on the capacitance value and the voltage rating of the capacitor but also depends on temperature ratings and other factors Some capacitors are manufactured to exhibit very low ESR values whilst conventional low cost parts are likely to exhibit higher values but still be acceptable As a rough guide only the following table shows typical values of ESR for a range of different capacitance and voltage ratings 10V 16V 25V 35V 63V 160V 250V 4 100 F 10 0004 F Please note that the above figures are only typical figures for standard grade electrolytics at room temperature please verify readings against expected values for the particular type of capacitor you are testing For any particular capacitance and voltage rating a lower ESR reading is generally better than a higher ESR reading Pag
7. ng the jaws of each and Fress TEST croc clip Then press the on test button 4 After a short delay the display ck will confirm that the procedure is complete and then switch off If the following message is displayed Compensation then the probes may not have been i f correctly shorted during the above Fail Try asain proecedure This message may also be displayed if any of the probe connections are faulty NOTE For the ESR70 the sound on off mode will be entered while holding the button down keep the button held down and the unit will proceed to the probe compensation mode Page 10 ESR60 ESR70 User Guide August 2009 Rev 6 Care of your Atlas ESR The Peak Atlas ESR should provide many years of service if used in accordance with this user guide Care should be taken not to expose your unit to excessive heat shock or moisture Additionally the battery should be replaced at least every 12 months to reduce the risk of leak damage If a low battery warning message appears replacement of the battery is Low Battery H essential Wdarnina ak Immediate replacement of the battery is EXTREMELY IMPORTANT as the built in protection mechanism may not function correctly if the battery condition is poor and therefore render your unit susceptible to damage from even low energy charged capacitors The Atlas ESR will not continue to operate if a low battery condition is encountered New batteries
8. nge 10c wc i Notes Subject to acceptable LCD visibility Model ESR70 is capable of measuring up to 400 3 Maximum abuse voltage rated limitation of internal protection electronics Probes leads and unit are not certified for high voltage use N e Page 13 ESR60 ESR70 User Guide August 2009 Rev 6 Appendix C Warranty Information Peak Satisfaction Guarantee If for any reason you are not completely satisfied with the Peak Atlas ESR within 14 days of purchase you may return the unit to your distributor You will receive a refund covering the full purchase price if the unit is returned in perfect condition Peak Warranty The warranty is valid for 24 months from date of purchase This warranty covers the cost of repair or replacement due to defects in materials and or manufacturing faults The warranty does not cover malfunction or defects caused by a Operation outside the scope of the user guide b Unauthorised access or modification of the unit except for battery replacement c Accidental physical damage or abuse The customer s statutory rights are not affected by any of the above All claims must be accompanied by a proof of purchase Page 14 ESR60 ESR70 User Guide August 2009 Rev 6 Appendix D Disposal Information WEEE Waste of Electrical and Electronic Equipment Recycling of Electrical and Electronic Products United Kingdom In 2006 the European Union introduced regulation
9. rocedure has completed The unit attempts to remove charge from the capacitor using a controlled discharge procedure If this takes longer than 60 seconds then the discharge process will be aborted It is recommend that you safely discharge the capacitor manually and try analysis again If the voltage across the capacitor is greater than 50V then the Atlas ESR will not attempt to discharge the capacitor please safely discharge the capacitor manually It is possible that a hardware failure has occurred please contact Peak Electronic Design Limited for assistance Page 12 ESR60 ESR70 User Guide August 2009 Rev 6 Appendix B Technical Specifications All values are at 25 C unless otherwise specified Parameter Min Typ Max Note Peak testcurrentintoS C_ 20mA 22mA Peak test voltage full scale ESR 40mV 44mV Peak test voltage across O C 25V 3 0V_ Capacitance measurement range uF 22 000uF 4 0 2uF HAEE ESR measurement range Q 2Q 2 ESR resolution for ESR lt 2Q 0 010 009 ESR resolution for ESR gt 2Q 01Q 02 ESR accuracy for ESR gt 2Q 1 5 0 2Q ao Abuse voltage for C lt 104P 5v f 3 Abuse voltage for C gt 104F SOV Auto Discharge voltage limit fi l 50 S Battery voltage range 85V 12V Battery voltage warning threshold 85V Dimensions excluding test leads 103x70x20mm Operating temperature ra
10. s WEEE for the collection and recycling of all waste electrical and electronic equipment It is no longer permissible to simply throw away electrical and electronic equipment Instead these products must enter the recycling process Each individual EU member state has implemented the WEEE regulations into national law in slightly different ways Please follow your national law when you want to dispose of any electrical or electronic products More details can be obtained from your national WEEE recycling agency If in doubt you may send your Peak Product to us for safe and environmentally responsible disposal At Peak Electronic Design Ltd we are committed to continual product development and improvement The specifications of our products are therefore subject to change without notice 2004 2009 Peak Electronic Design Limited E amp OE West Road House West Road Buxton Derbyshire SK17 6HF UK www peakelec co uk Tel 44 0 1298 70012 Fax 44 0 1298 70046 Page 15
11. s to a component Failure to comply with these warnings may result in personal injury damage to the equipment under test damage to the Atlas ESR and invalidation of the manufacturer s warranty Page 4 ESR60 ESR70 User Guide August 2009 Rev 6 Notes on ESR ESR ESR Equivalent Series Resistance as it s acronym implies is the value of resistance that is effectively in series with an ideal capacitor No capacitor is ideal of course the detailed equivalent circuit of a typical capacitor is very complex For many electrolytic capacitors however the most important parameters regarding the capacitor s performance is the capacitance and the ESR An increase in ESR due to age abuse or temperature cycling can result in poor capacitor performance The capacitor becomes less ideal and starts to dissipate more power an ideal capacitor of course dissipates zero power Capacitor manufacturers typically quote the ESR of their products at 100kHz which is the same test frequency used by the Atlas ESR Page 5 ESR60 ESR70 User Guide August 2009 Rev 6 Analysing Capacitors The Peak Atlas ESR is designed to analyse capacitor ESR in or out of circuit The two test probes can be connected to the component any way around Remember though that in circuit testing can result in less accurate readings Important To minimise risk of damage to the unit make sure that the Atlas ESR has completed any previous analys
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