Okay, I'm grinning. Now we have ammeters, voltmeters, and ohmmeters.
Let's all just have a beer and admit that we don't really understand
anything at all. <VBG>
I have noticed that when the house bank is low, my WEMA fuel gauge also
reads low. I've always wondered why, and figured that it had something
to do with the voltage differential between positive and ground on the
house bank somehow affecting the differential between the two on the
starting bank. The fuel sensor is definitely wired into the starting
bank side of things, since it's involved with the whole engine thing.
I'm not a geek, but I suppose I was one once. I have been drunk now for
over two weeks, and some people say that there's a woman to blame. Uh
Oh, one must be in trouble when one gets Jimmy Buffet lyrics mixed up.
I gotta go fix dinner.
Wal
you wrote:
Josh,
This is certainly not sailing related, but if i remember it correctly, they are
all really ammeters (the current flowing through them creates the magnetic
field that moves the needle).
Marek
Josh Muckley via CnC-List wrote:
All analog meters are just measuring the "voltage drop" across a
resistance. The key is to have the appropriate voltage input +12v. If the
+12v and the sensing line were reversed then the "voltage drop" would be
"negative" driving the needle to the empty peg.
Josh
I wrote:
I thought they were Ohm meters. Anyway, I just Googled it to make sure,
and see a ton of pages on testing marine fuel sender resistance.
Wal
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