NDIR Infrared CO2 Gas Sensor （Model：MH-410D） Manual Version: 2.9 Valid from: 2022.12.01 Zhengzhou Winsen Electronics Technology Co.,

Statement This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. Please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be responsible for the loss. The specific such as color, appearance, sizes &etc.4...

Zhengzhou Winsen Electronics Technology Co., Ltd Introduction MH-410D infrared gas sensor is a miniature universal intelligent sensor, which adopts NDIR theory to detect concentration of CO2 in air and has good selectivity, stable performance, long life, also is independent of Oxygen. The inside temperature sensor could be used for temperature compensation. This miniature infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, micro machine workout and superior circuit design. High sensitivity, high resolution, low power consumption, Fast...

Zhengzhou Winsen Electronics Technology Co., Ltd Table2..Measuring Range and Resolution Target Gas Measuring Range Analog output Measuring Range Digital output Temperature compensation Structure Size Fig2. Sensor structure (unmarked tolerance is±0.2) UART（RXD） 0～3.0 V data input UART（TXD） 0～3.0 V data output Analog voltage output The output of Vout is proportional to the gas concentration, 0.4-2.0V output stands for 0 to full range. Connection: Vin –5V,GND- Power Ground, Vout-ADC input. After warm-up, If self-checking detect a fault, output voltage is 0V. Output concentration = sensor range *...

Zhengzhou Winsen Electronics Technology Co., Ltd Digital Output Please referMH-410D communication protocol. Intrinsically safe explosion-proof  This product meets the standards of GB3836.1-2010 "Explosive Atmosphere Part 1: General Requirements for Equipment" and GB3836.4-2010 "Explosive Atmosphere Part 4: Equipment Protected by Intrinsically Safe "i"" standards”; the explosion-proof mark is Exib ⅡB T4 Gb, it is suitable for zone 1 and zone 2, contains Class IIA, T1-T3 explosive environment formed by the flammable gas, mixture of steam and air; it has passed the inspection by the National Quality...

Zhengzhou Winsen Electronics Technology Co., Ltd Co: Maximum external capacitance of safety barrier Lo: the maximum external inductance of the safety barrier (see the safety barrier instructions for the above parameters book) Cc: Maximum allowable distributed capacitance of connecting cable Ui: sensor maximum input voltage Ii: Maximum sensor input current Pi: sensor maximum input power Ci: Maximum internal capacitance of the sensor Li: Maximum internal inductance of the sensor Lc: Maximum allowable distributed inductance of connecting cable Note:  The sensor should be calibrated regularly, and...