USER MANUAL
SMALL-SIZE INFRARED GAS SENSOR MIPEX-02-3-RX-1.1 G
ESAT.100200.02.02 UM
September 23, 2021
Page 35 of 41
THE SOLE PROPERTY OF SIA MIPEX. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED.
2.4. manual zeroing complete.
3. Start feeding CGM #2 into sensor atmosphere.
4. One minute after CGM #2 was supplied, send <CALB AAAA> command, where AAAA is
a value of CGM concentration (e.g. value 0198 corresponds to 1.98% vol.). Thereafter
scaled concentration value C
1
becomes equal to the sent value AAAA. Scale coefficient
is stored in sensor microcontroller memory until the next span calibration. Before sending
command <CALB AAAA>, ensure the following conditions:
4.1. entered concentration value must not deviate from the current readings of
more than 20 times and also must not be less than 11:
(C ⋅ 20 > C
+
> C ⋅ 0.05) && C > 10
4.2. CGM must contain more than 0.2% vol. of target gas;
4.3. if these conditions are not met, sensor responds “CALB AAAA FAULT”.
5. Stop feeding CGM #2 into sensor atmosphere.
6. Feed CGM #3 into sensor atmosphere and check sensor readings.
If requirements to sensor readings variation are not met in accordance with Table 6, zeroing
and span calibration procedure should be repeated. In case of the repeated mismatch between
sensor readings and target gas concentration value in СGM #3, sensor should be sent to the
manufacturer for repair or replacement.
Fig. 10. Typical scheme of MIPEX-02 span calibration
PC
PC
USB cable
CGM
MIPEX-02/03 interface board
Gas adapter
MIPEX-02