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while there should be no issue in using this
for the P2 connector it isn't really all that necessary as those points are for
fixed sensors that won't be moved. P1 is where it would be really handy, as some
of those 8 T/C's will be moved to various locations for various tests and
running T/C extension wire back to the EMU will be somewhat of a
pain.
Hi Todd,
I concur with everything you said. I also wanted the
terminal block for the T/C inputs, but realized in talking to Tracy
that it would probably introduce too much error.
What I did instead, was solder 4- 8 foot long sections
of T/C wire from the P1 connector on the bench. I used the smallest,
stranded wire I could get, but it still sucked. The ends of these
pairs are twisted tightly, and soldered to make a probe (Tracy's idea, and it
works). These are long enough to reach anything I might need to test, and
coil up into about a 5" diameter coil when not in use. The plan is to just
leave them coiled up on the firewall side, unless I have them deployed for some
measurement task. With all the acreage you have under your cowl, I'm sure
you can find a spot to store these also.
Unfortunately, the EGT probes that I have are the clamp
type, which means you would have to have a large hole to get the clamp
through the firewall. Since these have to be run from the firewall aft, I
couldn't solder them on the
bench.
In liquid temp news, make note that there's a definite
trick to making the liquid temp 2 and 3 inputs work. It was a little
more involved than Tracy's original answer yesterday :-)
BTW- Tracy, I told you that I didn't bring out any of
the extra 5V wires, but that was wrong. I had only intended to bring
out a foot of the extra sensors, and grounds, so I could put ring terminals on
them and tie them to the ground stud on the chassis. When I went to
ground these extra wires, I noticed that there seemed to be too many. Sure
enough, I ran ALL the wires out, including the 5V wires. Fortunately,
I didn't ground them. Unfortunately, I didn't figure this out until I
had used my OAT 5V line for the OAT, and both aux liquid sensors.
Sure had a lot of 5V wires I could have used... Thanks again for the
phone support.
The EM-2 is completely installed, and all sensors seem to
be working. I can probably spend a whole day playing with the
programming, but that won't be next on the list. I still have a few wiring
tasks to do, then I get to make more hoses. Still, I should be running
again this weekend.
Cheers,
Rusty (The EMU slayer... mind you EMU bites can be pretty
nasty <g>)
PS- The area between my instrument panel and firewall is
completely full of wires now. I continue to be amused when I think that I
originally bought a 5 gallon header tank to put in that space, "because
there wouldn't be anything else
there".
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