Show your Multimeter!

[jvdb]

Just got my second meter! I've had the Fluke 115 for ~4yrs and recently wanted something with mA and possibly µA ranges. After watching eBay for a while I found this BK 389A NIB for $60. Think I got a good deal?

[Oracle]

yes.... you got a good deal for $60

[ResR]

I have the analog Velleman AVM360 working somehow over 6 years.

[quarks]

Today I received a brand new (but of course from old stock) Fluke 27 and I must say this is really a great, robust and perfectly accurate meter.
I tested it in all functions and ranges and it was perfectly linear and spot on.
Because I have my own cal lab, I did a full calibration ckeck: DCV, DCI and Ohms max. 1 count off, ACV and ACI at 50Hz mostly max. 1-2 count off
Very amazing!!!
This will become my new main every day tool, also because of 1000h battery life!

[branadic]

I bought a second bench multimeter, Philips PM 2534. The price was only 130,-€ incl. shipping, this is less than a new UT-71C and I couldn't resist.

[Amarbir[Lynx-India]]

I bought a second bench multimeter, Philips PM 2534. The price was only 130,-€ incl. shipping, this is less than a new UT-71C and I couldn't resist.

No Photo ,
       

[Oracle]

Anyway, 3 years saving and i will get this:

http://www.conres.com/stuff/contentmgr/files/1/12dd8c1debed4e7fe857e65e112d090a/image/_resized/30_441_250_2450_pic.jpg

[sotos]

Anyway, 3 years saving and i will get this:

http://www.conres.com/stuff/contentmgr/files/1/12dd8c1debed4e7fe857e65e112d090a/image/_resized/30_441_250_2450_pic.jpg

Who makes it ;

[Oracle]

Keithley makes it. Model is 2450

[Fezder]

i googled keithley 2450....and i thought flukes etc are expensive lol .

[Oracle]

yes, but this piratically is an entire lab portable lab.... can do a lot of things:
-DMM
-V/I source
-power supply
-precision electronic load
-semiconductor tracer/curve tracer

for 5K$ may worth it...

[ddavidebor]

yes, but this piratically is an entire lab portable lab.... can do a lot of things:
-DMM
-V/I source
-power supply
-precision electronic load
-semiconductor tracer/curve tracer

for 5K$ may worth it...

Well but for 5k you can get excellent and separated instrument

[Oracle]

Don't think so if you take all of that gear separately:

V/I source ~ 2K
DMM ~ 1K
electronic load ~ 1 K
power supply ~ 0.5 K (or more)
Sc tracer instrument ?? (can't extimate)

+TAX = more than 5.6K, The 2450 is 5K taxed, so it's a deal. 

[sotos]

yes, but this piratically is an entire lab portable lab.... can do a lot of things:
-DMM
-V/I source
-power supply
-precision electronic load
-semiconductor tracer/curve tracer

for 5K$ may worth it...

And if 1 instrument goes down you just buy a new one or repair that only, not the whole lab instrument.

[ddavidebor]

All in one instrument are just so useless...

[c4757p]

It's not really an all-in-one... it's just an SMU...

[Dr. Frank]

Got old stuff only:

Circuitmate 25L, 30 26 years old, and still accurate enough for daily electronics

4 1/2 digits DIY, based on 7135 / 7650, 20 years old, for DCV, DCI, low input current (10pA) and resolution to 1µV, 1nA

For metrology usage:

HP34401, 24 years old

HP3458, 13 years, demonstrating 0.2ppm transfer stability for Ohm range. 

Frank

[Blaffetuur]

Yeah a pretty cheap multimeter





Its a rebranded Velleman one, I don't know it does the job. If I had the money I bought an oscilloscope but thats way out of my budget

[branadic]

4 1/2 digits DIY, based on 7135 / 7650, 20 years old, for DCV, DCI, low input current (10pA) and resolution to 1µV, 1nA

A beautiful Weston Cell, I wish I had one too, but I fear I'm born a lil' bit to late.

What circuit example did you use for the 7135 and what voltage reference is used inside? You have circuit details that you want to share?

[Amarbir[Lynx-India]]

Yeah a pretty cheap multimeter





Its a rebranded Velleman one, I don't know it does the job. If I had the money I bought an oscilloscope but thats way out of my budget

Feeling Sad  ,
     Thats a CEM Rebranded Middle End Kick Ass Multimeter

[Dr. Frank]

A beautiful Weston Cell, I wish I had one too, but I fear I'm born a lil' bit to late.

What circuit example did you use for the 7135 and what voltage reference is used inside? You have circuit details that you want to share?

Thank you for the flowers.
 
Yep, the wooden box is beautiful, but that's only a saturated cell without temperature stabilization. You need a thermometer sticking inside to calculate the 20°C voltage.
It's simply a museums piece (like me  ).

I used the 7135 datasheet standard circuitry, with a polypropylene 470nF foil cap.
The reference is an ICL8069A, 10ppm/K.

The resistor assembly is sort of free wire connection on the switch, so really nothing to share. 

The 4 1/2 digit module also contains the ICL 7650.

If you're interested, I could search for the old layout I think I've still saved somewhere.

Frank

[branadic]

If you're interested, I could search for the old layout I think I've still saved somewhere.

Sure, at least your current measurement implementation would be interesting. The only publication that I know that includes current measurement is the HAMEG HM8011.

[Dr. Frank]

Sure, at least your current measurement implementation would be interesting. The only publication that I know that includes current measurement is the HAMEG HM8011.

Uh, there's nothing mystic about that.

The module measures voltages of 2V, 200mV and 20mV only.

In current mode, I simply used decade shunt resistors from 0.1 to 10k, and the 7650 amplifies the voltage over them by a fixed factor of 10, i.e. 200mV max. burden. That's all.

Frank

 

[Tooms]

Hi

It was time to do the half yealy battery check and changeup of my meters so here is some photos.
 








And here is the benchmeters in the mini rack at my bench.




Tooms

[nanofrog]

It was time to do the half yealy battery check and changeup of my meters so here is some photos.

By chance are you a Fluke Distributor or just an addict?    

Lots of nice gear there.