Thanks Mark,
I like that resistance calculator link.. www.1728.com/resistrs.htm
Here's what I did this last hour ... since I had already had cut open several
SMITHS temp transmitters (ie; cut crimping off, pulled terminal, removed
spring, paper, rod, and wafer). The wafers are silvered both sides and ID
stamped,
A, B, C, D or E .. to indicate resistance. I simply cleaned the dirty
contacts and tested each wafer in cleaned housing till I got one to read
between 27.9
to 35.7 ohms in boiling water (only one 'C' wafer passed test).
Reassembled and sealed terminal-end with high temp silicone and dinged edges
for tight fit - now I have a restored SMITHS TT3804/00A - what a way to save
$9!
I am familiar with your 'hiss and vapor' mode of determining the state of an
engine but I don't want to be followed home by firetrucks again - that was
embarassing!
Ps; how the heck didn't I see your awsome restored Sprite and 4A before this??
Regrds,
Carl
'63 TR4 since '74
Carl,
Maybe a parallel resistor would bring it back in line. Here is a calculator
link. http://www.1728.com/resistrs.htm
If your sender measures 42 ohms at 212 and you want it to read 33 ohms in
order to place the needle on the 212 on your gauge then a 150 ohm resistor
in parallel would make it about right. At least in theory +/- something
maybe.
How linear it would be is anybodys guess! You could also just listen for
the hiss and watch for the vapor....
Mark
Nashville
http://www.arrestmered.com
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