fluke 110 sumone pressed the calibration button - Page 1
Forum section: electronics / testgear

author: mentholflash
author_rank: Contributor
timestamp: August 02, 2018, 06:45:17 am
content: hi allhope sumone can help i have a fluke 110 that was working fine no isues but my 12 year old brother inlaw pressed the calibration button (never played with a multimeter before) now it only reads ohms at 0.2 no dc or acwas hoping i could factory reset or even a way to complete the calibration steps dont seem too hard seems to be only 6.000v neededplease can anyone helpcheers in advance

author: MosherIV
author_rank: Super Contributor
timestamp: August 02, 2018, 07:06:36 am
content: HiWelcome to the forum.How long have you had the meter? Are you the original owner?If less than 1 year, covered under warranty.I am not sure if Fulke cover the 110 series with lifetime warrenty. If so, just ask Fluke. Do not tell them that the calibration button has been pressed. Just play dumb and sya that the meter is not working properly.

author: mentholflash
author_rank: Contributor
timestamp: August 02, 2018, 07:13:13 am
content: thanks for the reply only trouble is it happened 5 years ago just before our move to australia only just found it again just thought there maybe an easy fixthanks again

author: lowimpedance
author_rank: Super Contributor
timestamp: August 02, 2018, 01:26:11 pm
content: So he was able to find the calibration seal underneath the meter and poke a probe into it and hold to enable the cal. mode !.Do you see any display messages ie Cal. and Err ?, or any other message as per the manual.Otherwise it does seem that 6V RMS (at two easy frequencies) and 6V DC ,plus 600and 6Kshould be all you need and shouldn't be to hard as you say. Do you have other gear ?.

author: Fungus
author_rank: Super Contributor
timestamp: August 02, 2018, 02:48:28 pm
content: Quote from: lowimpedance on August 02, 2018, 01:26:11 pmIt's easy when you're 12.Quote from: lowimpedance on August 02, 2018, 01:26:11 pmIf it's only the Ohms range then another decent multimeter and a (preferably multi-turn) 10K potentiometer are all you need to get it back.(and a copy of the service manual, with instructions...)

author: mentholflash
author_rank: Contributor
timestamp: August 03, 2018, 07:31:05 am
content: hi allthanks for the replysno error messages displayed just looks like it should but does nothing when leads attached to 240v ac or 9 v dcand the child is a bit of a genius gets all top grades at school and is now on his way to being an architect he said he thougt pressing the button would just calibrate itselfso it does seem as thou it need just 6 volts to calibrate it but what about the 900.0hz how do i generate thisthanks again for the replyscheers

author: mentholflash
author_rank: Contributor
timestamp: August 03, 2018, 07:38:11 am
content: i do have another fluke 73 its a bit big and bulky but can be used to check inputs and i have a variable dc power source can you point me in the right direction for other needed thingsthanksps the meter didnt have its yellow jacket on wasnt too hard to find the calibration sticker and at least he got to see me change colour when he told me what he had done

author: coromonadalix
author_rank: Super Contributor
timestamp: August 03, 2018, 10:44:47 am
content: a small thread here :https://www.eevblog.com/forum/testgear/fluke-100-plus-no-means-to-calibrate/or here calibration start at page 12https://www.manualslib.com/manual/691386/Fluke-110.html?page=13#manual

author: mentholflash
author_rank: Contributor
timestamp: August 04, 2018, 04:14:07 am
content: hi coromonadalixthanks for the reply but its the generation f the values needed to calibrate that i need help withC-01 6.000 V 900.0 HzC-02 6.000 V 60hzC-03 6.000 V DCC-04 600 eC-05 6.000 kei am asuming that i need a 6v power supplyhttps://www.ebay.com.au/itm/Multi-Voltage-Power-Adapter-3v-4-5v-5v-6v-9v-12v-Power-Supply-w-USB-Port-AU/292515626336?hash=item441b4a3d60%3Ag%3APMYAAOSwXoxab9j5&LH_PrefLoc=1&_sop=15&_nkw=6v+power+supply+au&rt=ncbut this doesent advertise a hz outputi am asuming using other electrical part will help generate the values but dont know what partsPlease Help!!!!!!!!thanks again for all repliescheersp.s. parts list would be great i have a small breadboad for parts incorporation

author: MosherIV
author_rank: Super Contributor
timestamp: August 04, 2018, 06:45:36 am
content: QuoteStay away from crappy wall warts (your link)I think you said you had another DMM and a variable PSU - you can use that to generate the 6V DCDo you have a signal/function generator?You just need to set it to output a sine wave with 6V rms (just use your other meter to check this, DMM does not need to be true RMS becuase it is a sine wave).Set the 2 freq and check the voltage again with the other DMM600V and 6KV - you are going to have problems with.6KV- This should blow the input of the DMM

author: Fungus
author_rank: Super Contributor
timestamp: August 04, 2018, 11:32:58 am
content: Quote from: mentholflash on August 04, 2018, 04:14:07 amDefinitelyNOT. The chances of a 6V power supply measuring 6.000V are zero.Get a 9V battery and use a multi-turn 10K potentiometer to get 6V from it for your multimeter.(batteries have a much more stable output than a cheap power supply)PS: Shouldn't this be the 12-year old's problem?

author: mentholflash
author_rank: Contributor
timestamp: August 05, 2018, 07:12:12 am
content: hi allthanks for the repliesjust trying to clarifyi think?C-01 6.000 V 900.0 HzC-02 6.000 V 60hzC-03 6.000 V DCC-04 600 e OhmsC-05 6.000 ke KOhmsthese are the values i need to generatei have a variable psu like the ones used in cnc machines 240v to 0-48v can be used to power ledsi have a 12v laptop psuor as Fungus sudgested a 9v battery and 12v lithium one from toolsand would this do the jobhttps://www.ebay.com.au/itm/Black-Precision-WXD3-13-2W-Multi-Turn-Wirewound-Linear-Potentiometers-10K-OHM/323030752651?epid=504518425&hash=item4b36221d8b%3Ag%3AuJ0AAOSwVlVaG-Z6&LH_PrefLoc=1&_sop=15&_nkw=multi-turn+10K+potentiometer+&_sacat=0&_from=R40&rt=nc&LH_TitleDesc=0%7C0i have a breadboard some ressistors variedhow do generate values when needed at a precise valuemaybehttps://www.ebay.com.au/itm/50W-6KJ-6Kohm-Srecw-Tap-Mounted-Green-Aluminum-Wire-Wound-Housed-Resistor/331656080409?epid=1638802510&hash=item4d383e2c19%3Ag%3AhFEAAOSwpFlaSgL6&_sacat=0&_nkw=6+kohm&_from=R40&rt=nc&LH_TitleDesc=0%7C0andhttps://www.ebay.com.au/itm/Resistor-600-Ohm-10-Watt-Wirewound-Cement/263852621843?hash=item3d6ed78013%3Ag%3ALo0AAOSwxj5XQFWA&_sacat=0&_nkw=600+ohm&_from=R40&rt=nc&_trksid=m570.l1313&_oac=1&LH_TitleDesc=0think i remember bieng told if i use 2 of above ressistors and 12v supply it will deliver 6v@600ohms would this be right?hopeing sumone may take pitty and help me to produce valuesthanks

author: Fungus
author_rank: Super Contributor
timestamp: August 05, 2018, 09:52:26 am
content: Quote from: mentholflash on August 05, 2018, 07:12:12 amIn theory, yes, but in practice those resistors can vary by 5% (read the small print).Same for the "12V" supply.

author: mentholflash
author_rank: Contributor
timestamp: August 05, 2018, 11:49:04 am
content: hi Fungusthanks for the replywhat about the pot would that workand any chance you could sudjest a ressistor and psu tha would do the job and/or circuit diagram i would probably be able to figure out the rest using googlecheers

author: Fungus
author_rank: Super Contributor
timestamp: August 05, 2018, 02:38:37 pm
content: Quote from: mentholflash on August 05, 2018, 11:49:04 amIt's a bit industrial but, whatever. It's a pot.

author: coromonadalix
author_rank: Super Contributor
timestamp: August 05, 2018, 04:02:48 pm
content: I'm gonna be rough a little, why don't you do a proper calibration at an service centeri know it cost $$$ but you'll be sure it will be done rightSometimes the calibration need to be done with voltage and a given / asked frequency for compensation purposes ... not doing it right may causes some errors / driftsDo you value this meter, or you try simply to make it work ?

author: Fungus
author_rank: Super Contributor
timestamp: August 05, 2018, 06:43:23 pm
content: Quote from: coromonadalix on August 05, 2018, 04:02:48 pmI'm going to join in:Given the sort of basic questions you're asking at the moment, I'm guessing it's not going to work out for you on your own - especially on the AC ranges (I'm not sure even I could do those without a proper signal generator).Best bet is to find somebody local with proper gear to help you or send it to a service center.

author: rsjsouza
author_rank: Super Contributor
timestamp: August 05, 2018, 07:37:19 pm
content: A real calibration would be the best alternative here. However, depending on where you live, you can have a new one (from eBay US) for mere US$62.00 + shipping. I don't think any cal service will run for less than that.

author: siggi
author_rank: Regular Contributor
timestamp: August 05, 2018, 08:49:59 pm
content: Quote from: Fungus on August 05, 2018, 06:43:23 pmDoesn't sound like there's much harm in trying. Struggling and failing are a good way to learnin'.

author: Fungus
author_rank: Super Contributor
timestamp: August 05, 2018, 09:10:33 pm
content: Quote from: siggi on August 05, 2018, 08:49:59 pmI guess the AC ranges could be done with a copy of Audacity to generate a sine wave at the right frequency and then pass it through an audio amplifier (into, say, a 16 Ohm power resistor) to get a 9V wave.Now re-use the DC potentiometer setup to get exactly 6V RMS from that.

author: mentholflash
author_rank: Contributor
timestamp: August 06, 2018, 05:03:17 am
content: hi allthanks for all the repliesso i have a broken multimeter and little to no money (unemployed) which is the only reason i have the time to look at such things as an old broken multimeterif you are saying this cant be done then i am defeated at the first hurdle and will have to wait till such a time i can afford professional calibrationonly reason i thought i could do this myself is that the inputs seemed quite reachable being only 6vi am happy to try to fix it and learn a little in the process as at the end of it all i will still have a multimeter that needs calibratingbut if there was a way to do it i will have saved and have a working hand held dmm that is still a fluke meterand i live in remote western australia The Great Southerni would like to be able to do it but if you are saying it is out of a laymans reach i can understand that and will just have to lump it and pick another projectthanks all