hello everybody,
I installed an Utcomp-pro in my Volvo XC70 and use 2 NTC sensors to read oil and manifold air temperature. for some reasons these sensors never read temperatures below 30 degrees. when I enter in the car in the morning and the OEM car temperature sensor(outside temperature on instrument panel) read 8-9 °C the 2 NTC read 30°C while a couple of DS18B20 I connected to the instrument read exactly the same temperature as the car OEM sensor. the sensor sheet contains 2 possible calibration data: the first is for 60-150 °C and another for 50-120 °C. I do not understand if these 2 different calibration data are intended for 2 different kind of sensors and which is mine but tried both and the difference is small. I wonder if these NTC sensors are designed in such a way that they cannot read temperature below a certain value or I am using a wrong setup. can somebody advice me?