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MH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor

(14 customer reviews)
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$27,05

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SKU: 4001296615950 Categories: ,

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The MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.
Product parameters:
Detection gas: carbon dioxide
Power supply voltage: DC (5.0 ± 0.1) V
Average current: <40mA (@5V power supply)
Peak current: 125 to (@5V power supply)
Interface level: 3. 3v (compatible with 5v)
Measuring range: 400-5000PPM optional
Output signal: serial UART (TL level 3.3V)
Warm-up time: 1min
Response time: T90< 120s
Working temperature: -10-50degree
Working humidity: 0~95%RH (no condensation)
Pin description:
Vin: Power +(in)
GND: power supply-(GND)
PWM: PWM
Hd: HD (zero calibration, low level is effective for more than 7 seconds)
Rx: UART (RXD) TTL level data input
Tx: UART (TXD) TTL level data output
Output method:
PWM output
Assume the measurement range is 400-2000ppm
CO2: Concentration output range: 400-2000ppm
Period: 1004ms±5%
High level output at the beginning of the cycle: 2ms (theoretical value)
Central period: 1000ms±5%
Low level output at the end of the period: 2ms (theoretical value)
Calculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)/(TH+TL-4ms)
Cppm: CO2 concentration value calculated by the unit of ppm
TH: the time when the output is high level in one output cycle
TL: the time when the output is low in one output cycle
MH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor
Serial output (UART)
Hardware connection, connect the sensor’s Vin-GND-RXD-TXD to the user’s 5V-GND-TXD-RXD. (User terminal must use TTL level)
MH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor
Precautions:
1. In the process of welding, installation and use of the sensor, the gold-plated plastic cavity should be prevented from withstanding pressure in any direction.
2. If the sensor needs to be placed in a small space, this space should be well ventilated, especially the two diffusion windows should be in a well ventilated position.
3. The sensor should be far away from the heat source, and avoid direct sunlight or other heat radiation.
4. The sensor should be calibrated regularly, and the calibration period is recommended to be no more than 6 months.
5. Do not use the sensor for a long time in the environment with high dust density.
6. In order to ensure that the sensor can work normally, the power supply voltage must be maintained at (5.0 ± 0.1) VDC. The power supply current must not be less than 150mA
7. If it is not within this range, the sensor may be faulty, the output concentration of the sensor is low or the sensor cannot work normally.
8. When manually calibrating the zero point or sending the command to calibrate the main points, it must be stable
9. Work continuously for more than 20 minutes in a gas environment (400ppm).
10. The sensor is prohibited to use wave peak depth.
11. When welding with iron, set the temperature to (350±5) degree, early
12. The pick-up time must be less than 35.
13. When using the sensor, it is recommended that the customer use the method of inserting the solder bump to directly insert and remove the sensor for toilet maintenance.
MH-Z19 IR Infrared Carbon Dioxide Gas CO2 SensorMH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor

Specification: MH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor

Brand Name

EC Buying

Origin

CN(Origin)

Usage

Gas Sensor

Material

Mixture

Type

Gas Sensor

Output

Digital Sensor

Theory

CO2 Sensor Module

Model Number

MH-Z19C

is_customized

Yes

6 Months Warranty


This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.


What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

14 reviews for MH-Z19 IR Infrared Carbon Dioxide Gas CO2 Sensor

4.9 out of 5
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  1. Customer

    Very fast deleivery

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  2. K***t

    It’s okay. Thank you store. The goods came quickly. Packing is excellent. The quality is very good.

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  3. Customer

    Works perfectly with ESP32. The temperature sensor is not accurate.

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  4. Customer

    Works perfect with a node mcu v3 board

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  5. D***a

    The product works perfectly and according to the description. The only bad thing is that the local carrier left it in the mailbox and to get in through the mailbox crack, crushed it, damaging some pins.

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  6. Customer

    The description was very accurate and corresponded exactly the product. The figure has also exactly match tune

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  7. H***S

    7 days in the Netherlands

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  8. N***a

    Works perfectly, tested and complies with specs

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  9. M***h

    Product arrived reasonably fast, but was not really well packaged. It does not show damage, so it will probably be fine.

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  10. R***a

    super

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  11. R***r

    Superbly working sensor, doesn‘t seem to be counterfeit, albeit missing RoHS stamp, but I haven‘t ever seen an MH-Z19C with that stamp. Fast delivery and good store. Thank you.

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  12. G***i

    Everything works!

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  13. J***e

    it’s the improved MH-Z19B, works fine

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  14. F***e

    Well packaged, and works well. Does what it says on the tin.

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