snips..

Thanks Ed. Yes on the D5321.
I'll check the software tomorrow when I get it but they probably supply a
compiled version so it should run without having to have VB or do
any program modifications. I will also supply all cables and
make up the thermal couples. Figure on mounting the module on a cool
place under the cowl and let me know how long you want the
thermocouple wires.  You will also have to connect it to a source
of 12V.

All we need right at the moment is OAT and one measurement behind
one evap core under worse case cooling conditions. Say climb out.
OAT hot or cold does not matter as all we are looking for is the air temp
increase through the evap core. Any other measurements you feel like
making are icing on the cake.

I was thinking about measuring the temp on
the outside of the exhaust pipes every four inches to get a feel
for how fast the temp falls off on the pipes downstream from the
engine. Would help when designing mufflers.

I will drill two small holes in my rotor housings next to the spark
plugs and measure cyl head (so to speak) temperature near the
combustion chamber.

BTW I have a third module I bought years ago that measures voltages.


Paul Lamar

Ok Paul,

    Yes, if you will come up with the complied program, I'll be happy to
install the system in the aircraft.  13.8-14.0 VDC is the voltage my system
has during normal operation.

I would propose putting one sensor in front of a opening (probably in in the
oil cooler opening as that opening is furtherest from its radiator and least
likely to be affected by radiated heat.  Perhaps the other three of that
module could be placed behind each of the two radiators and the oil cooler.
If you recall my radiators are plumbed in series so the delta T of the air
through the first one will likely be higher.  We would then have delta Temps
for all three radiators/coolers.

With two modules daisy-chained I could use "C" clamps to hold the second set
of 4 K couples attached to the outside surface of the exhaust pipe.
However, my exhaust ports each have their own dedicated exhaust pipe, so
don't know how that might affect the measurements your are looking for.

I plan on going out to the aircraft Saturday and I will look for a good
position to mount the module as well as the thermocouples and will send you
a sketch and measurements for cable.

Best Regards

Ed

Sounds good Ed. Use a wood stick to shield them from radiant heat.
Lets forego the exhaust pipe temps for awhile and focus on water 
and air temps in and out of the rads.

Paul Lamar
 
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