USER MANUAL
SMALL-SIZE INFRARED GAS SENSOR MIPEX-02-3-RX-1.1 G
ESAT.100200.02.02 UM
September 23, 2021
Page 5 of 41
THE SOLE PROPERTY OF SIA MIPEX. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED.
2. DESCRIPTION
MIPEX-02 sensor is a small-size gas sensor that operates on the NDIR (non-dispersive
infrared radiation) principle to detect and determine the concentration of carbon dioxide (CO2) in a
areas. The sensor is used in: food industry, agricultural industry and production technological cycles.
The sensor is used as a OEM component for portable and fixed gas detectors. Has a long life time.
The sensor's low power consumption allows it to be used in battery-powered systems, including IoT
applications.
Sensor has several modifications for specific needs. They differ by housing types, photodiode
and LED, calibration gases, interface types, measuring ranges etc. (see Appendix A).
Sensor is a smart integrated system and includes mirror optical system, photodiode and LED,
signal amplifiers, microcontroller, current driver of the infrared LED, UART interface signal generator
and supply forming voltage unit. Sensor microcontroller performs storage of unique sensor
calibration constants, processing of measurement results and concentration of measured gas, and
information exchange.
Sensor operating principle is based on NDIR technology, i.e. on selective absorption of infrared
radiation by carbon dioxide molecules in its spectral absorption band.
Differential dual wavelength method allows eliminating of water vapor, optical elements
contamination and other non-selective hindrances influence.
Target gases available for MIPEX-02 are listed in Table 1.
Table 1. Target gases for MIPEX-02 sensors
Target gas
Analytical tasks
description
Optical elements
code (see
Appendix A)
Spectral
characteristic
maximum
Notes
CO
2
Analyzing the atmos-
phere (including of in-
dustrial facilities) con-
taining carbon dioxide.
3
4.2
µ
m
Sensor is selective to
other gases.