|Oct 15, 2014, 08:24 AM|
Joined May 2013
Version 4.1 Telemetry Reader available
Version 4.1 telemetry reader available.
See details here :-
Version 4.0 had an issue related to custom graphs and vario data.
|Yesterday, 05:38 PM|
Joined May 2005
Temp Sensor Errors
The Temp sensor on one of my aircraft started to play up last weekend. You can see in the attached data file. There are some obviously good readings where the temp goes up to about 100deg C as expected from previous flights, but there are also a lot of data points in the 300 to 500deg C range !!
So, I would really like to know what caused them and how I can fix the problem.
Could it be caused by an open circuit in the temp sensor ?
A short circuit in the temp sensor ?
A nick in the heatshrink allowing it to touch the metal of the motor head ?
We don't have time during competitions to download the data and look at it, just a quick look at the maximums on the Transmitter screen after landing to see if there are any signs of problems. Not much help when it says 514deg C !!
The installation is on a 20cc glow motor. The sensor is on/in the gap between the top and second top cooling fins on the head, on the exhaust port side of the motor. A small amount of glue has been used on the wires each side of the sensor to hold it to the fins (without blocking them) so it hopefully does not move with vibration and chafe the heat shrink over the temp sensor.
I actually seem to be getting a similar problem with a 55cc petrol engine installation, though it is not as bad yet. Can send the data file for that one as well if it would help.
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