Winsen MH-Z19E Infrared CO2 Sensor Module User Manual
- June 5, 2024
- Winsen
Table of Contents
Infrared CO2 Sensor Module
(Model: MH-Z19E)
User’s Manual
(Version 1.0)
Issue Date. 2021.10.11
Zhengzhou Winsen Electronics Technology Co., Ltd
ISO9001 Certificated Company
Leading gas sensing solutions supplier in China
Statement
This manual’s 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 a database or retrieval system, also can’t be spread through electronic, copying, record ways.
Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, or change the components inside of the sensor, we shall not be responsible for the loss.
The specific such as color, appearance, sizes &, etc., please in kind prevail.
We are devoting ourselves to products development and technical innovation, so
we reserve the right to improve the products without notice. Please confirm it
is the valid version before using this manual. At the same time, users’
comments on the optimized using way are welcome.
Please keep the manual properly, in order to get help if you have questions during the usage in the future.
Zhengzhou Winsen Electronics Technology CO., LTD.
MH-Z19E NDIR CO2 Module
|
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Profile
MH-Z19E NDIR infrared gas module is a common type, small size sensor, pins
type or terminal type, using non-dispersive infrared (NDIR) principle to
detect the existence of CO2 in the air, with good selectivity, non-oxygen
dependent and long life. Built-in temperature compensation; and it has UART
output and PWM
output. It is developed by the tight integration of mature infrared absorbing
gas detection technology, precision optical circuit design, and superior
circuit design.
Applications
HVAC refrigeration
Indoor air quality monitoring
Ventilation system
Air cleaner device
Smart home
School
Main Features
High sensitivity, low power consumption
Good stability
Temperature compensation, excellent linear output
Multiple output modes: UART, PWM
Long lifespan
Anti-water vapor interference, anti-poisoning
Main parameters
Table1.
| Model No. | MH-719E |
|---|---|
| Detection Gas | CO2 |
| Working voltage | 5.0+0.1V DC |
| Average current | < 40mA (©5V power supply) |
| Peak current | 125mA (@5V power supply) |
| Interface level | 3.3 V (Compatible with 5V) |
| Detection Range | 400∼ 10000ppm(optional, see table2.) |
| Output signal | Serial Port (UART) (TTL level 3.3V) |
PWM
Preheat time| 1 min
Response Time| Igo < 120 s
Working temperature| -10∼ 50 °C
Working humidity| 0 ∼ 95% RH (No condensation)
Storage temperature| -20∼ 60 °C
Weight| 5 g
Lifespan| > 10 years
Detection range and accuracy
Table2.
| Detection Gas | Formula | Detection Range | Resolution | Accuracy |
|---|---|---|---|---|
| Carbon Dioxide | CO2 | 400∼ 2000ppm | 1ppm | ± (50ppm+5% reading value) |
400∼ 5000ppm
400∼ 10000ppm
Dimensions (Pins type)
Pins connection type
table3.
| Pin | Pin Definition |
|---|---|
| Vin | The positive pole of power (Vin) |
| GND | The negative pole of power (GND) |
| PWM | PWM |
| Hd | HD(zero point calibration, low level lasting for over 7s is effective) |
| Rx | UART(RXD)TTL Level data input |
| Tx | UART(TXD)TTL Level data output |
Dimensions (Terminal type)
Terminal connection type
| Pin | Terminal Pin Definition |
|---|---|
| Pin 4 | Vin Power In |
| Pin 3 | GND |
| Pin 2 | Reserved |
| Pin 7 | PWM |
| Pin 1 | HD(zero point calibration, low level lasting for over 7s is effective) |
| Pin 5 | UART(RXD)TTL Level data input |
| Pin 6 | UART(TXD)TTL Level data output |
Cautions
- Please avoid the pressure of its optical chamber from any direction, during welding, installation, and use.
- When placed in a small space, the space should be well ventilated, especially for the diffusion windows.
- The module should be away from heat and avoid direct sunlight or other heat radiation.
- The module should be calibrated termly, the suggested period is no longer than 6 months.
- Do not use the sensor in a high dusty environment for a long time.
- To ensure the normal work, the power supply must be among 5.0V±0.1V DC rang, the power current must be not less than 150mA. Out of this range, it will result in the failure of the sensor. (The concentration output is low, or the sensor cannot work normally.)
- During the zero-point calibration procedure by manual or sending command, the sensor must work in a stable gas environment (400ppm) for over 20 minutes.
- Forbid using wave soldering for the sensor.
- When soldering with a soldering iron, set the temperature to be (350±5)℃, and the soldering time must be within 3 seconds.
- We suggest customers to use the way of soldering the socket and plugging/pulling the sensors for easier maintenance.
Zhengzhou Winsen Electronics Technology Co., Ltd
Add No.299, Jinsuo Road, National Hi-Tech Zone,
Zhengzhou 450001 China
Tel: +86-371-67169097/67169670
Fax: +86-371-60932988
E-mail: sales@winsensor.com
Website: www.winsen-sensor.com
Leading gas sensing solutions supplier in China
References
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
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