MoTeC Global Forum

what is the best way of calibration the factory sensors if we don't have data sheet or information about the sensors do l leave it as predefined table that motec provide ? or I make new custom table ?

If the predefined tables work, use that, otherwise make a custom table to fit the sensor. Why don''t you tell us what engine and what sensor, and perhaps someone has what you need already.

David Ferguson wrote:If the predefined tables work, use that, otherwise make a custom table to fit the sensor. Why don''t you tell us what engine and what sensor, and perhaps someone has what you need already.

thanks for you feedback the car nissan patrol Y61 2015, about the sensors I think its custom sensor, If you have the setup it will be great

Temp or pressure?

Most temp sensors will use one of the pre-existing temp calibrations in the M84, if you have a existing, known good, temp sensor that can be used next to the sensor that you want calibrated, then you can try the different calibration with the unknown sensor, and see if one of them will match up with your reference sensor. If you find one, then increase the heat that the sensor is exposed to, and see if they match at higher temps. If they do, then just use that calibration, if not, you can either make your own calibration by measuring the output voltage at 10 degree intervals, and enter them into the calibration tables (you need to heat soak the sensor for around 15 minutes at each point to ensure valid data), or send it to MoTeC via you local dealer, and we can calibrate it for you.

With the Pressure sensor, these are easier as they have a linear scale for the most part, and typically have a voltage range from 0.5v to 4.5v. If you connect to the sensor and read the voltage at atmospheric pressure, and it is reading around 4v ~ 4.5v, then it will most likely be a 100kPa sensor, if it reads ~2.5v, it will be a 200kPa sensor, and ~1.5v a 300kPa sensor. Look at the calibrations in the M84 and select on that has the matching range, and then test it.

thanks SDean , that’s is very useful
i will now recalibrate some of my sensors

Thanks alot For your feedback, note that