Richard Edwards wrote in
news
On Mon, 15 Sep 2008 01:37:29 +0000, Larry wrote:

Snip
The LED display blanks when the reading makes no sense to the Link.
That's normal. I think we have some stray millivolts being fed to the
current sensing of the link. New wires and terminals and cleaning the
shunt's screws will cure it. MAKE SURE YOU DO NOT SCRAPE AWAY ANY OF
THE METAL FROM THE SHUNT! We trim shunts with a file to make them
calbrate. You'll see file marks. More filing will make current
readings too high...not good.


I think that you are "a bit over the top" here Larry G
The connection screws are normally tapped into brass blocks, there is
no problem with cleaning and polishing and if badly corroded filing
this screw area. I totally agree that filing the actual shunt material
between the two blocks is a NO NO. I am sure that is what you meant
but hope this makes it a little clearer to those with less knowledge.

Richard


I just don't want him yacht polishing up the shunt bars to make it pretty.
That will screw up the calibration. Cleaning around the screws is fine.
Those blocks are way too thick to change the shunt calibration, which on a
Link 20 isn't really that important as the batteries are never going to be
anywhere near the AH rating stamped on the side and programmed into the
Link anyways....