Unstable temperature readings
in 912 / 914 Technical Questions
9 years ago
Hi. I'm tracking problem on my 912ULS.
The problem is that my oil and cht temperatures has peaks.
Problem aperas only on hot engine (about 100*C) but no peaks about 60-70*C.
I'm using Flybox Minieis for monitoring.
I checked grounding connections, wires, I cleaned every and retighted them...
Still when I fly with about 110*C on oil I have from time to time 2-3s peak up to 135*C and back to 110*C.
It's impossible to have so rapid change on oil. The same is with CHT.
Oil pressure is stabile. All sensors are VDO resistance.
Big wire from battery is connected to place when normally magneto cover is attached and from this point big wire is coming back to ground bus in aircraft (when I have connected EIS and another stuff). I checked and refixed all connections.
Where I can look for problem? Do you had issue of VDO temperature sensors? Maybe old sensors are unstable?
Engine has 800hrs after overhaul.
The problem is that my oil and cht temperatures has peaks.
Problem aperas only on hot engine (about 100*C) but no peaks about 60-70*C.
I'm using Flybox Minieis for monitoring.
I checked grounding connections, wires, I cleaned every and retighted them...
Still when I fly with about 110*C on oil I have from time to time 2-3s peak up to 135*C and back to 110*C.
It's impossible to have so rapid change on oil. The same is with CHT.
Oil pressure is stabile. All sensors are VDO resistance.
Big wire from battery is connected to place when normally magneto cover is attached and from this point big wire is coming back to ground bus in aircraft (when I have connected EIS and another stuff). I checked and refixed all connections.
Where I can look for problem? Do you had issue of VDO temperature sensors? Maybe old sensors are unstable?
Engine has 800hrs after overhaul.
