View Single Post
  #54  
Old 2015-02-21, 4:17pm
Speedslug's Avatar
Speedslug Speedslug is offline
Phill
 
Join Date: Mar 21, 2009
Location: Winnebago, MN
Posts: 2,489
Default

The silver on the probe is safe from just about anything we can do to them. They are solid metal so no worries there.

And yes I did mean the coating on the object. It is only going to be less than onion skin thick at the best so when you poke it with the tips you can easily scrape it off and it will stop conducting where it's missing. So do your testing and then it would be a good idea to recoat so you don't wind up with bare spots.

As to the meter, if Rx10 is the lowest scale then when the needle swings over to the 1 mark that means it has 1 times 10 'ohms' of resistance. Resistance is the opposite of conductance. Smaller resistance = more conductivity = good in this case.

If the needle goes past zero you will need to touch the tips together and reset the wheel so that it stops at zero if you want the numbers to make sense.

And yes the lower number the better.


Oh and turn the switch to off when you put the meter away. The battery will run down in a week if you leave it in one of the R x number positions even if nothing is touching the tips.
__________________
The Zombie Apocalypse is Upon Us.
Reply With Quote