fluke 1652 multifunction tester

[soulman]

Hi, quick question,

Do the test leads need to be nulled for ze & pfc. I have been told they don't as there resistance is negligible.

Cheers

 

[Sharpend]

I don't think the machine will allow you too?

 

[soulman]

Sharpend, yes it does have a null for the leads for live testing. I have had the tester for about 3 years, i was speaking to a spark who also had the same tester & he told me not to bother nulling them for live tests.

 

[Sharpend]

To be honest I have the 1652 and can't say that I have nulled them for live tests. I seem to remember the machine not liking it if i tried? Usually I null them ready for dead tests, the machine then recognises that they have been nulled so I doesn't matter if you switch across the different tests it remains nulled. Try it with continuity, null the leads to carry out various tests then check back on continuity should find it remains nulled. That's how I understand it to work?

 

[soulman]

Cheers sharpend, you need all 3 leads to null for live testing. after their nulled they remain nulled as with continuity.

 

[yellowvanman]

With the inconsistant contact resistance of the leads into the back of the tester I zero the leads all the time! I usually know what to expect with the different leads I use and zero until I get in the region of what I expect.

If you've got new leads you shouldn't have a problem but over time you will!!

 

[onions1066]

Yes you do have to zero the leads I found this the hard way after calling the DNO out for a high ZE they were using a fluke tester as well. Saw them zero there leads so I zero'd mine and it came down by 0.05 which bought it below the max. Felt a right ........---.