Is my EGT probe reading correctly?
If you are unsure whether your EGT Thermocouple probe is reading correctly (MGL Avionics type-K thermocouple), there are a few simple tests you can do:
With the EGT still connected to your instrument, hold the tip of the probe in the hottest part of a paraffin-based household candle. You should get a reading of 930 deg F (500 deg C) on your instrument. If you do, your sender is good!
You can check the sender with a multimeter further as follows, when not connected to your instrument:
First check is with a multimeter set to ohms. You should get very close to zero ohms between the two wires. Next check, set multimeter to millivolt scale. Hold the tip of the EGT probe in the hottest part of a paraffin-based household candle. The flame is about 500 deg C / 930 deg F at the hottest part which should give you a reading of around 20mV.
Note that the polarity of Type-K Thermocouples is not intuitive, as Red is Negative:
YELLOW = POSITIVE
RED = NEGATIVE
Is my CHT probe reading correctly?
If you are unsure whether your CHT Thermocouple probe is reading correctly (MGL Avionics type-K thermocouple), there are a few simple tests you can do: BOILING WATER TEST With the CHT probe still connected to the instrument, hold the probe ring in a ...
EGT Thermocouple Probe Wiring and Setup
Attached are settings and wiring connections for Exhaust Gas Temperature senders. This guide can be used to help if you are experiencing problems or if you suspect your EGTs are reading incorrectly. Remember to follow these 3 Steps first when ...
Thermocouple Order - which goes first EGT or CHT?
In all MGL Avionics instruments (except iEFIS), including Velocity Singles and Infinity Singles and all RDAC connections for MGL Avionics Enigma, Odyssey and Voyager EFISs, the following rules apply regarding the order in which EGT and CHT probes are ...
Can I extend CHT and EGT Thermocouple probes?
Should you wish to increase the length of the leads of your CHT or EGT probes, this can be done. Our type-K EGTs and CHTs probes should be extended with type-K extension wire directly to the RDAC, or if the RDAC is mounted outside the engine ...
EGT Thermocouple Probe Type?
Most Aviation EGT probes are type-K thermocouples (because the temperature range of type-J thermocouples is not has high as is required for EGT). All MGL Avionics EGTprobes are TYPE-K. Note that the polarity of Type-K Thermocouples is not intuitive, ...