MULTIMETERS

A LOOK AT VARIOUS METERS, THEIR ACCURACY AND USE IN H.O.

Category:

Science & Technology

Tags:

• ELECTRONICS

[b42w4242]

haa! you are listening to shine on you crazy diamond! i dont know if anyone else caught that or not?

[Groosome128]

Shine on you crazy diamond :)

[zizolz]

pink floyd \m/

[eurokid83]

So how bout that four wire measurement...

[eurokid83]

That bench unit is capable of four wire measurements which is more accurate than two wire measurements as stated below. Care to elaborate on that? Is it a rule or something?

[Rudakotaone]

Love Pink Floyd...Thanks for the music and the video too...

[grlg2]

Hi, I was just looking for Fluke DMM videos and come across this by accident. Have you tried using a constant current source (100mA or so) and a DMM on milivolts? Constant current sources can be made very easily out of a voltage regulator and battery + few other bits.

Quite sure you bench fluke meter uses this method (4 wire ohms measurement).

I have used this method in the past as a poor mans low ohms meter with good success at measuring resistance of automotive ignition coils.

Greg.

[Ryantron9000]

@seasonedtoker

well this is an old post but maybe answering it will help. DMM's are rated with a percentage and you should be somewhere within that range. For instance if your meter says that it is 1% accurate and you read 100 volts then the real reading could be 101-99.

A good multimeter will have a manual with it that tells you the accuracy.

[mklndrs]

I can't make out the type of the fluke bench meter, but I'll bet it supports kelvin leads which cancel out lead resistance, and if you use four test points even contact resistance.

[seasonedtoker]

are there differences in voltage measurements between different DMM's as well? in terms of accuracy of course

[raymix1]

great stuff, cool to see more people posting educational videos here. 5 stars