Tomas J
Active Member
I have just monted a combinated EGT and CHT instrument from AS...
http://www.aircraftspruce.com/catalog/inpages/micro4egt.php
The schema is very strange for connecting the CHT, as it told to connect negative cable to a plus pin (you can see it on a picture in the link). I did connect to the pins as they fit from the cable, but that made the pointer go backwards.
Then I shifted the cabels at the point where they are spliced near to the probe. Now the pointer go the right way.
But then I start thinking about it... Perhaps now it's wrong connected at both instrument and prob, and if so, does that matter? Is there different metall also in this cables, as it is in the ones near the probe, and will that give me a wrong indication. I have not been flying yet, so I have not seen if it shows a realistic value. I just tested to heat up the ring.
Do anyone know about this...?
http://www.aircraftspruce.com/catalog/inpages/micro4egt.php
The schema is very strange for connecting the CHT, as it told to connect negative cable to a plus pin (you can see it on a picture in the link). I did connect to the pins as they fit from the cable, but that made the pointer go backwards.
Then I shifted the cabels at the point where they are spliced near to the probe. Now the pointer go the right way.
But then I start thinking about it... Perhaps now it's wrong connected at both instrument and prob, and if so, does that matter? Is there different metall also in this cables, as it is in the ones near the probe, and will that give me a wrong indication. I have not been flying yet, so I have not seen if it shows a realistic value. I just tested to heat up the ring.
Do anyone know about this...?
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