|
The CHT is a negative-temperature-coefficient resistor (NTR). The resistance when at room temp is about 2.5 K ohms, and when hot (>250 deg F) it's 100 ohms or less. Most other temp sensor elements used on cars are NTR's or some type of thermocouple (less common). I don't know exactly how the temp gauge works (it probably measure current), but it probably assumes the sensor is a NTR and that's why a CHT works with it.
Brad Anders
__________________
Brad Anders
Scottsdale, AZ
|