EGT Lead Connection

by David HEAL in 912 / 914 Technical Questions 8 years ago

I need to replace the push-on electrical connectors at the ends of my EGT leads -- the existing connectors are just too intermittent. Can I slightly (@ 1/2 inch?) shorten these EGT leads without causing any problems? My existing EGT is: Rotax EGT Sensor, K-type P/N 100405-001 Rev K. Thanks!

Re: EGT Lead Connection

by Bill Hertzel » 8 years ago

Bill Hertzel

13 1.95k 8k

A thermalCouple is a Current generator.
The length of the connecting wire, within reason, is not a factor.

Shortening it 1/2 inch is a no brainer.
If you wanted to lengthen it more than 100 ft. or so, that would require a little thought, but not much.

Carry on! :)

Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.

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Re: EGT Lead Connection

by Peter Kl. » 8 years ago

Peter Kl.

7 230 382

Had to shorten one EGT-cable by approx. an inch recently to get rid of a mal connection (broken wire) giving useless readings recently and it definitely made no difference (beside the desired effect that the reading got good again). Since thermocouples generate a smal voltage (not current) as a function of temp, there will be some mesurable effect when cut down in great lengths on one sensor only.
However, since we measure in the range of 800 C it won't matter really. Plus, the displayed value is more like an indication than an absolute figure equal to "the ultimate truth". Savvy published a good article on that some time ago, in case your are interested... Mike Busch explains that better than I can.
Regards
Peter

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