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Author Topic: Show your Multimeter!  (Read 181713 times)

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Offline quarks

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Re: Show your Multimeter!
« Reply #275 on: January 18, 2013, 07:32:00 AM »
I searched for a Fluke 8508A but could not find one.Today I wrote to Fluke if there is a chance to still get one.
here is the link I used
http://www.fluke.eu/comx/sales.aspx?locale=dede&product=CAL&pid=32946

To my surprise I got the answer from the suggested Fluke Seller (just hit "Suchen" in the link)  that the Fluke-8508A is still produced and can be offered.

Can anyone confirm this?
« Last Edit: January 23, 2013, 04:05:51 PM by quarks »
 

Offline Andrewausfa

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Re: Show your Multimeter!
« Reply #276 on: January 26, 2013, 12:54:31 PM »
I bet no-one has seen these meters on here before....

These are UK military type 'Multimeter Electronic CT471' from the mid-1960's. These are tranistorised and work from 3 x 1.5V 'D' cells and can take voltage measurements at frequencies up to 1000 MHz. The one on the right (or the middle meter) is the CT471C with a centre zero facility. I've stuck an AVO meter in for scale but for those unfamiliar with that meter, the CT471 stands about 10 inches high. There's a lid that clips on front that holds the leads and four RF probes - one of which is in the photo.

Inside these are of a bygone age really, all point to point wired and laced cabling. Must have cost a fortune. Lovely.

I should add they weigh about 11 pounds (or just under 5kg) each.

 

« Last Edit: January 26, 2013, 01:07:04 PM by Andrewausfa »
 

Offline PA4TIM

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Re: Show your Multimeter!
« Reply #277 on: January 26, 2013, 09:33:35 PM »
Andrewausfa: They are very nice.
I have a new one too. Also army:

www.pa4tim.nl my collection measurement gear and experiments Also lots of info about network analyse
www.schneiderelectronicsrepair.nl  repair of test and calibration equipment
 

Offline Andrewausfa

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Re: Show your Multimeter!
« Reply #278 on: January 27, 2013, 01:08:59 AM »
Lovely! Another piece of no expense spared kit!  AVO built a meter to the same contract as the CT471 but I've not seen one in good enough condition to warrant buying it. I do like working with (and on) these older meters. I work with old valve (tube) radios where most of the measurements in the service sheets were taken by AVOs etc so absolute precision in a meter is not needed. That said these are remarkably good for something as old as me.

 

Offline jancumps

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Re: Show your Multimeter!
« Reply #279 on: January 27, 2013, 01:46:54 AM »
... I never opened it but...
Isn't that against EEVBlog rules?

;)
 

Offline PA4TIM

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Re: Show your Multimeter!
« Reply #280 on: January 27, 2013, 02:05:51 AM »
Yep, but my rules are more important  ;)
www.pa4tim.nl my collection measurement gear and experiments Also lots of info about network analyse
www.schneiderelectronicsrepair.nl  repair of test and calibration equipment
 

Offline Martin.M

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Re: Show your Multimeter!
« Reply #281 on: January 28, 2013, 01:52:26 AM »


the little portable scope includes a DMM  :)

greetings
Martin
 

Offline PA4TIM

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Re: Show your Multimeter!
« Reply #282 on: January 28, 2013, 04:18:06 AM »
Is that a Sony scope ?
www.pa4tim.nl my collection measurement gear and experiments Also lots of info about network analyse
www.schneiderelectronicsrepair.nl  repair of test and calibration equipment
 

Offline SeanB

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Re: Show your Multimeter!
« Reply #283 on: January 28, 2013, 04:26:59 AM »
Tektronix made for Sony.
 

Offline MetraCollector

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Re: Show your Multimeter!
« Reply #284 on: January 28, 2013, 06:05:21 AM »
What do I do when I bring new instrument. :D

Today buy:
https://picasaweb.google.com/100683312221737332313/34401A#



 

Offline FenderBender

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Re: Show your Multimeter!
« Reply #285 on: January 28, 2013, 06:44:34 AM »
Nice meters guys, I'd love get something precision as you have there :-+

Now these three aren't mine, just what I can use at work:



New Agilent U1232A, almost year old Brymen BM867 and about 4 year old Fluke 117. The BM867 still remains the only one who can accurately measure mA currents, which is ultimately the reason my employer bought it, although I really wanted it for the 500 000 count mode but we don't really need such precision around here. :-DMM

The new U1232A brings some interesting features, currently I love the tone option of low resistance beeper, it works on diode range too. What it does is it beeps at various frequencies depending on the resistance value or voltage drop of diode. When you try shorting the probes and opening quickly it generates sounds like some old 8-bit game console :-DD

edit: I forgot to add a bit about the probes. Those which came with the Fluke aren't really durable for daily use. We have 4 of them here and all of them sooner or later started to break up, I think all in the same place which is at top of the probe as the wire goes out. I guess the strain relief is not really working. You can just chop them off and use the cable for something else like small hooks for example, because the cable itself is good and has silicone coating. Few weeks ago we were shopping for some better replacement and found the convertibles TL175. They are really good, hopefully they will last longer. I think they're worth the higher price. Don't forget to get the version with screw on bannanas, for my work they are essential. BM867 came with some cheaply looking altough 1 kV CAT IV rated probes. I don't like them much so I rather got some generic UNI-T which you can see in the photo. U1232A came with more stiff probes, end is similar to the Brymen's, I guess that's for the CAT IV rating. Nice thing is they come with rubber protections ends for both sides. They also have isolation inside for the jack to multimeter so accidental unplugging from meter when still measuring something live should be a bit safer. I rate them above the UNI-T's but not as good as any of the Fluke's.

How do you like the U1232A? I was thinking about buying one before, since I lost one of my cheaper meters :( and I'm down to 3.
 

Offline psycho0815

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Re: Show your Multimeter!
« Reply #286 on: February 17, 2013, 05:26:47 AM »
Four at this Point, but I'm probably gonna get one more, so i can throw the voltcraft cheapy away and still have four.

Left to right:
voltcraft vc110
ELV DM9199
Agilent U1241B
Fluke 87V, which i bought used without the holster
If you like, check out my blog (german):
http://h-reg.blogspot.de
 

Offline PA4TIM

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Re: Show your Multimeter!
« Reply #287 on: February 17, 2013, 06:01:54 AM »

http://www.pa4tim.nl/?p=4159 picture backside
My new 6 digit voltmeter.
Is there someone who knows more about is. It has not a moving coil meter ( i do not know the englisch term, it is sort of thermic, there ia a coil or resistancewire, I think this heats the circulair formed strip and the shaft is connected to the end of that iron strip, if the strip heats it expands and moves the shaft ( in Dutch weekijzeren kern meter or 1:1 translated weak-ironcore meter)
It draws about 300 mA at 6V.
I think they are used automotive to test batteries. I think it is from the 1920's. There is no brandname on it. The back opens if you push the top and the test wire is spooled on a reel in there to store it.
Resistance wire and test wire is cotton isolated, no rubber or so.

www.pa4tim.nl my collection measurement gear and experiments Also lots of info about network analyse
www.schneiderelectronicsrepair.nl  repair of test and calibration equipment
 

Offline FenderBender

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Re: Show your Multimeter!
« Reply #288 on: February 17, 2013, 06:26:53 AM »
My grandfather had something very similar. I don't know if it works, but I found it the other day and it intrigued me. Not sure how it works exactly either.
 

Offline SeanB

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Re: Show your Multimeter!
« Reply #289 on: February 17, 2013, 06:38:32 AM »
Thermal meter that uses a bimetallic strip, back when magnets were difficult to make repeatable and in a small space.
 

Offline G7PSK

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Re: Show your Multimeter!
« Reply #290 on: February 17, 2013, 06:50:18 AM »
That's a hot wire meter, the wire is tensioned by a spring and when a current passes though it the wire expands and moves the needle. I had one once but I knocked it and the wire broke due to embrittlement from age and heating.
 

Offline cwalex

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Re: Show your Multimeter!
« Reply #291 on: February 17, 2013, 01:18:09 PM »

http://www.pa4tim.nl/?p=4159 picture backside
My new 6 digit voltmeter.
Is there someone who knows more about is. It has not a moving coil meter ( i do not know the englisch term, it is sort of thermic, there ia a coil or resistancewire, I think this heats the circulair formed strip and the shaft is connected to the end of that iron strip, if the strip heats it expands and moves the shaft ( in Dutch weekijzeren kern meter or 1:1 translated weak-ironcore meter)
It draws about 300 mA at 6V.
I think they are used automotive to test batteries. I think it is from the 1920's. There is no brandname on it. The back opens if you push the top and the test wire is spooled on a reel in there to store it.
Resistance wire and test wire is cotton isolated, no rubber or so.

That is beautiful! I don't know why but I really like it, maybe because it reminds me of an old pocket watch.
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Offline SeanB

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Re: Show your Multimeter!
« Reply #292 on: February 17, 2013, 05:06:51 PM »
It is made from the case from one. In that era they were very common and quite appropriate for small instruments that would be often kept in a pocket for use. Clothes had a pocket or two that took them.
 

Offline giorgos

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Re: Show your Multimeter!
« Reply #293 on: February 17, 2013, 08:12:07 PM »
Here is my multimeters. METEX 3650 my first one DMM bought in 1992, SOAR 3250 bought in 1995 , UNI-T UT601 ohm/capacitance meter bought in 2008 and UNI-T UT61 bought in 2010. My next target is to buy a true rms high quality meter, perhaps it will be FLUKE 87 or 179.
 

Offline T4P

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Re: Show your Multimeter!
« Reply #294 on: February 17, 2013, 08:28:14 PM »
If you want a high quality meter go for an Agilent U1272A
http://the4thpin.comeze.com <-- Rants and Reviews! sorry my english  :palm:
 

Offline rsjsouza

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Re: Show your Multimeter!
« Reply #295 on: February 18, 2013, 01:29:10 AM »
My next target is to buy a true rms high quality meter, perhaps it will be FLUKE 87 or 179.
I have a 179 and can speak for its ruggedness and real attention to detail - check this teardown and reviews. My biggest concern about the U1272 is the prominent rotary switch, which reduces its ruggedness when compared to the Flukes you mentioned.
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline Amarbir[Lynx-India]

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Re: Show your Multimeter!
« Reply #296 on: February 18, 2013, 04:29:20 PM »
What do I do when I bring new instrument. :D

Today buy:
https://picasaweb.google.com/100683312221737332313/34401A#





Well,
     how much for the same  ...
Regards

Amarbir Singh Dhillon [ Lynx-India ] , Chandigarh [ India ] - > www.lynxdealerstore.com , www.lynx-india.com
Indian Distributor For  [ Autoelectric , Sofitech , IDEOfy ,Peak Electronic Design [UK ] , Anatek And Creatronica ]
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Offline Dellarius

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Re: Show your Multimeter!
« Reply #297 on: February 18, 2013, 04:47:40 PM »
I've got this noname branded freebie they were going away for free at jaycar. very high quality for price!



But in all reality I've got a Fluke 1587
 

Online EEVblog

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Re: Show your Multimeter!
« Reply #298 on: February 18, 2013, 04:53:03 PM »
I just got a HP 3457A, and it's bang-on.  :-+

Dave.
« Last Edit: February 18, 2013, 07:47:46 PM by EEVblog »
 

Offline Fsck

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Re: Show your Multimeter!
« Reply #299 on: February 18, 2013, 05:47:22 PM »
I just got a HP 3457A, and it's bang-on.  :-+

Dave.

That picture says 3478A  :palm:
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