USER MANUAL
SMALL-SIZE INFRARED GAS SENSOR MIPEX-02-3-RX-1.1 G
ESAT.100200.02.02 UM
September 23, 2021
Page 37 of 41
THE SOLE PROPERTY OF SIA MIPEX. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED.
Appendix D.2. Temperature dependence of zero adjustment
It is allowed for user to adjust the temperature dependence of zero. To do this split any
temperature range into equal intervals about 12.5 °C each. Each interval is used for corresponding
operating temperature. Then perform the operation accordingly to an example below.
An example of procedure for temperature range of -40…+60 °C:
1. Fill sensor atmosphere with nitrogen.
2. Power on the sensor.
3. 1 minute after, send <ZERO0> command. This command erases previously defined
temperature coefficients.
4. Change temperature in the range of -40…+60 °C with a pitch of 12.5 °C. For each of 9
points of temperature range, lock the temperature for at least 20 minutes.
5. When temperature is stable, for each of 9 points of temperature range send <ZERO>
command, by which a current temperature ADC value and ratio S
t
value (see Table 15)
are written to sensor memory (see Fig. 11).
Fig. 11. Scheme of adjusting the temperature coefficients
Sensor’s metrological characteristics are guaranteed only for temperature range
determined with RX-code (see Appendix A).