Author Topic: DMMCheck Plus now available (Read 10410 times)

Moonbase · « **Reply #25 on:** October 29, 2018, 03:28:56 pm »

Argh! Seems I missed it—again!

Just sent Doug an email.

noidea · « **Reply #26 on:** November 11, 2018, 12:10:54 am »

It seems Christmas is coming early this year, I got an email from Doug that my unit has been shipped.

GreyWoolfe · « **Reply #27 on:** November 11, 2018, 03:22:51 am »

Hopefully the rest will soon follow. I can't wait to try mine on my freshly calibrated HP 3478A.

xrunner · « **Reply #28 on:** November 15, 2018, 12:32:54 am »

Quote from: noidea on November 11, 2018, 12:10:54 am

It seems Christmas is coming early this year, I got an email from Doug that my unit has been shipped.

Me too today!

Terry01 · « **Reply #29 on:** November 15, 2018, 01:55:56 pm »

Lucky gits! I must be further down the list than you. At least if he's started messaging folks that's good

Dwaine · « **Reply #30 on:** November 15, 2018, 05:47:09 pm »

Canada Post is on strike. So mine is sitting in some warehouse.

xrunner · « **Reply #31 on:** November 16, 2018, 07:50:58 pm »

It has arrived!

noidea · « **Reply #32 on:** November 17, 2018, 01:16:32 am »

Quote from: Dwaine on November 15, 2018, 05:47:09 pm

Canada Post is on strike. So mine is sitting in some warehouse.

Hi Dwaine
I think Doug has mixed up tracking numbers as the one he gave me is showing arrived in Canada this morning and I'm down under! 🌏
I'm pm you the number if you want.
Update, I've just checked my emails and he sent me two tracking numbers. Mine is in Sydney so 3/4 of the way to me.

Dirk C. · « **Reply #33 on:** November 21, 2018, 09:47:23 pm »

arrived yesterday

I would post a picture, but i don't know how.....

Sent at 9.11 arrived at 21.11, works as expected.

Dirk

noidea · « **Reply #34 on:** November 21, 2018, 10:08:24 pm »

I got mine the other day as well, unfortunately I haven't had a chance to try it out on any of my meters yet.

GreyWoolfe · « **Reply #35 on:** November 25, 2018, 01:58:15 am »

Mine came today. I let my meters warm up for about an hour. I did a simple chart. Since I am not into voltnuttery, I wasn't worried about tempcos. I know my office is warmer than the conditions the DMM Check was checked. I also didn't do % of accuracy either. Just simple readings. I highlighted in red any readings that were horribly off. Not surprising, the ANENG AN8009 was horrible on voltages and currents. Luckily, I will only be using it for low resistance measurements and continuity for which it works very well. The AN8008 was better on voltages, not so good on currents but not as bad as the 8009. Maybe it is time to get a Fluke 101 just in case I need to do anything but resistance. It is a remote possibility but the % is not zero.

EDIT: Sorry but I am not able to display the results in the dialog box. Apparently it is smarter than me. I tried to paste the link and then did a copy/past from the spreadsheet and nothing worked. Sorry about the download.

Dwaine · « **Reply #36 on:** November 26, 2018, 07:02:59 am »

My unit showed up on Friday. Works great. I’m glad I did not miss this run.

Terry01 · « **Reply #37 on:** November 26, 2018, 05:32:07 pm »

There are a couple available in the on line store! Be quick!

Terry01 · « **Reply #38 on:** December 13, 2018, 09:50:37 pm »

Received my DMM check today!

I was happy to check and see all my meters were as near as damn it, even my first Fluke 177 that I bought 2nd hand a while ago! I think my Keysight meter is the only one still in Cal so it's good to now have something to use as a reference. I only use them for hobby stuff but it's still cool to know they are reading near enough. I have the wee Chinese one that does the four different voltages but voltage is all it does and I didn't really trust it anyways so it's cool this one I can trust a lot more has other features too!

A cool wee gadget!

malagas_on_fire · « **Reply #39 on:** December 13, 2018, 10:04:13 pm »

Well it begs me one silly question. is it worth sending a meter to a owner of one of those DMM checkers to verify the meter or getting into a lab?
It depends of course of the desired resolution / precision but it's just for checking drifts on the specs due to aging.

IanB · « **Reply #40 on:** December 13, 2018, 10:11:29 pm »

Quote from: malagas_on_fire on December 13, 2018, 10:04:13 pm

Well it begs me one silly question. is it worth sending a meter to a owner of one of those DMM checkers to verify the meter or getting into a lab?
It depends of course of the desired resolution / precision but it's just for checking drifts on the specs due to aging.

Not worth sending a meter away somewhere. But worth trying to find a friend or acquaintance nearby with a known trustworthy meter to compare yours against.

Terry01 · « **Reply #41 on:** December 13, 2018, 10:21:51 pm »

Quote from: IanB on December 13, 2018, 10:11:29 pm

Quote from: malagas_on_fire on December 13, 2018, 10:04:13 pm
Well it begs me one silly question. is it worth sending a meter to a owner of one of those DMM checkers to verify the meter or getting into a lab?
It depends of course of the desired resolution / precision but it's just for checking drifts on the specs due to aging.

Not worth sending a meter away somewhere. But worth trying to find a friend or acquaintance nearby with a known trustworthy meter to compare yours against.

I would agree with that too.

I have a couple different references now that I have taken over the course of different meters being in Cal so between that and the couple actual reference points I have I am able to tell if any of them start drifting..... I think!

malagas_on_fire · « **Reply #42 on:** December 13, 2018, 10:56:32 pm »

Good idea if the reference is also good on the friend . I have one of those AD584 board for the voltage but nothing very accurate for current. The DMM plus is a AIO great solution for meter checking.

Terry01 · « **Reply #43 on:** December 14, 2018, 12:03:24 am »

Quote from: malagas_on_fire on December 13, 2018, 10:56:32 pm

Good idea if the reference is also good on the friend . I have one of those AD584 board for the voltage but nothing very accurate for current. The DMM plus is a AIO great solution for meter checking.

I'm sure it's the AD584 one I have too. It does 2.5v, 5v, 7.5v and 10v? I think they are a bit hit and miss depending which buyer you get it from. Some being so so and some being not so so so!

The way I used mine was to check all my meters, 2 of which were in Cal at the time and use it as a reference point. It was a bit of a crap shoot relying on one meter to be correct then another then using that to check my other meters documenting the results which I was then able to see if anything changed over time.
I'll do the same with the DMM check but I now have more reference points to compare against.
I only use my meters for hobby stuff so nothing is too important.
It's still good to have all the same.

Synthtech · « **Reply #44 on:** December 14, 2018, 06:53:40 am »

I had a good laugh a couple of months ago, I got one of those little Chinese Perspex box voltage references for a bit of fun, it had a sticker on the back with readings for each voltage which was claimed to be taken with an Agilent 34401A multimeter. I warmed up the little box, warmed up my own 34401A and hooked them together.

I nearly fell over. My 34401A agreed with the marked values on the reference precisely. Every one of them. To the last decimal point. What are the chances of that?

Brumby · « **Reply #45 on:** December 14, 2018, 07:06:35 am »

Buy a Lotto ticket!

Terry01 · « **Reply #46 on:** December 14, 2018, 08:25:35 am »

Quote from: Synthtech on December 14, 2018, 06:53:40 am

I had a good laugh a couple of months ago, I got one of those little Chinese Perspex box voltage references for a bit of fun, it had a sticker on the back with readings for each voltage which was claimed to be taken with an Agilent 34401A multimeter. I warmed up the little box, warmed up my own 34401A and hooked them together.

I nearly fell over. My 34401A agreed with the marked values on the reference precisely. Every one of them. To the last decimal point. What are the chances of that?

I have heard others say the little Chinese ones are good for what they are marked up for then others say they are miles out and rubbish. The one I got wasn't bad at all either compared to what my in Cal meters were reading at the time but my 289 has been the best I have been able to check it against so nothing like your 34401A.
That's good it agreed with your higher spec meter though so now you can sort of believe it. If you get another data point in then at least it gives you something to go off.
The chances of them both drifting the exact same over time are into "buy a lottery ticket material" so where do you stop believing what your meter is saying or is it the other meter or the reference box or yada yada yada..... it could send you round the bend!

Good to hear you got what you paid for though instead of just something thrown out the door in China.

Synthtech · « **Reply #47 on:** December 14, 2018, 09:32:36 am »

I think it was just a one in a million quirk of temperature and equipment, mind you I might try the test again tomorrow just for the heck of it and see if they are anything like the same.

Terry01 · « **Reply #48 on:** December 14, 2018, 12:33:39 pm »

When you do you better lay a cushion down because if they agree the same again you maybe really will fall over!

Flenser · « **Reply #49 on:** December 14, 2018, 01:18:46 pm »

Quote

My 34401A agreed with the marked values on the reference precisely. Every one of them. To the last decimal point. What are the chances of that?

Wouldn't the chance that the documented voltages would match your 34401A measurement only be likely if the ebay seller used an instrument with similar, or better, specs to your 34401A and almost non-existant if the ebay seller used something with a lesser spec?


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Author Topic: DMMCheck Plus now available (Read 10410 times)

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