Individual O2 sensor readings

Anton Lundin glance at acc.umu.se
Wed Aug 26 14:51:02 PDT 2015


On 26 August, 2015 - Anton Lundin wrote:

> On 01 July, 2015 - Jef Driesen wrote:
> 
> > 
> > This is the relevant info I have:
> > 
> > 16   O2 Sensor voting status.
> > bit 0: Sensor 1
> > bit1:  Sensor 2
> > bit2:  Sensor 3
> > 1 = voted in. 0 = voted out or not calibrated.
> > 44   Is Single PPO2 Sensor. 1 = single sensor mode. 0 = Normal (3
> > sensor) mode.
> > 86   Calibration Status (bit 0: Sensor 1, bit 1: Sensor 2, bit 2:
> > Sensor 3). Bit set if sensor calibrated, bit is zero if calibration
> > is failed or invalid.
> > 87   Sensor 1 Calibration value: (Byte 1: MSB)
> > 88   Sensor 1 Calibration value: (Byte 0: LSB)
> > 89   Sensor 2 Calibration value: (Byte 1: MSB)
> > 90   Sensor 2 Calibration value: (Byte 0: LSB)
> > 91   Sensor 3 Calibration value: (Byte 1: MSB)
> > 92   Sensor 3 Calibration value: (Byte 0: LSB)
> > 93   Sensor 1 ADC Offset (Signed Integer)
> > 94   Sensor 2 ADC Offset (Signed Integer)
> > 95   Sensor 3 ADC Offset (Signed Integer)
> > 
> 

Btw. Where are the mV values stored?

And are there any fO2 calibration gas value stored anywhere?


The calibrations are done as a single point calibration, eg. This
sensors gives a mV response of X for a known gas with a fO2 of Y at
pressure Z.

>From that the sensor is assumed to give a linear mV response to
different ppO2's.


//Anton


-- 
Anton Lundin	+46702-161604


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