Coolant Temp Sensor Calibration
Posted: Tue Jul 27, 2010 5:23 pm
Hi Guys,
I am in the mist of calibrating the Coolant Temp Sensor. Following the instructions in the EM36 manual (Page 25-26), I am only able to calibrate a small range (30 to 100 degrees). A few questions:
1. I notice the manual mentioning the usage of "extrapolation" to derive unobtainable termperatures. Can you advice on this process? Do I use the "Fill" function?
2. What is the "Depth" and "Smoothness" of the "Smooth" function?
3. One way to calibrate for the lower range of temperatures (down to 0 degrees), is to use some ice. However, is it possible to use the "Resistance Vs Temperature" graph for calibration? I assume that the Coolant and Air Temp pins of the EM36 uses the typical "voltage divider" setup to obtained the necessary readings. In this case, some simple calculation would be able to yield the corresponding temp voltages. Is there some way or using this approach?
Appreciate your time on this.
I am in the mist of calibrating the Coolant Temp Sensor. Following the instructions in the EM36 manual (Page 25-26), I am only able to calibrate a small range (30 to 100 degrees). A few questions:
1. I notice the manual mentioning the usage of "extrapolation" to derive unobtainable termperatures. Can you advice on this process? Do I use the "Fill" function?
2. What is the "Depth" and "Smoothness" of the "Smooth" function?
3. One way to calibrate for the lower range of temperatures (down to 0 degrees), is to use some ice. However, is it possible to use the "Resistance Vs Temperature" graph for calibration? I assume that the Coolant and Air Temp pins of the EM36 uses the typical "voltage divider" setup to obtained the necessary readings. In this case, some simple calculation would be able to yield the corresponding temp voltages. Is there some way or using this approach?
Appreciate your time on this.