Winsen MH-Z19C CO2 Sensor with Cable

Name: Winsen MH-Z19C CO2 Sensor with Cable - MH-Z19C
SKU: 003109
Price: 17.5 EUR
Availability: InStock
Rating: 5 (1 reviews)

Winsen MH-Z19C CO2 Sensor with Cable

Availability: Directly available from warehouse in Eindhoven
SKU: 003109

Based on 1 review(s) - Write a review

€17.50

Ex Tax: €14.46

10 or more €17.25

20 or more €17.00

50 or more €16.75

100 or more €16.50

200 or more €16.25

500 or more €16.00

Qty

Add to Cart

Add to wishlist

500+ pieces in stock

The MH-Z19C is the successor to the popular MH-Z19B and is largely compatible. This version is more stable, and in practice more accurate than the MH-Z19B. This CO2 sensor can measure the amount of carbon dioxide very accurately with the non-dispersive infrared principle (NDIR).
This sensor comes with accompanying cable. We also sell a cable with a convenient DuPont connector for this sensor: Cable for Winsen MH-Z19

Specifications:

Supply voltage: 4.9 - 5.1V DC (5V DC with <20mV ripple recommended)
Signal voltage: 3.3V (5V compatible)
Power consumption: <80mA (average), 125mA (peak)
Measurement range: 400-2000ppm
Max measuring frequency: 1Hz
Accuracy: ±50ppm+5% reading
Output interface:
- UART (3.3V TTL)
- PWM
Pre-heat time: ~2.5min
Operation within humidity: 0 ~ 95% RH (no condensation)
Working temperature: -10 ~ 50 ℃
Connector: 7p Molex PicoBlade
Lifespan: >5 years

For more information see the datasheet with specifications and the UART protocol under the tab "Downloads".

See this page for a library for Arduino: Github strange-v/MHZ19

Differences with MH-Z19B:

	MH-Z19B	MH-Z19C
Supply voltage	4.5-5.5V DC	4.9 - 5.1V DC
Power consumption	<20mA (150mA peak)	<80mA (125mA peak)
Measurement range	0-2000ppm*	400-2000ppm*
Max measuring frequency	0.2Hz	1Hz
Pre-heat time	~3min	~2.5min
Max humidity	90%	95%
Working temperature	0 ~ 50 ℃	-10 ~ 50 ℃
Output interfaces	UART PWM Analog	UART PWM
Connector options	Cable or pin headers	Only cable

* Measurements below 400ppm are not very accurate with the MH-Z19B. Also, these concentrations do not occur in normal air.

Check the tab "Downloads" for more information and/or downloads.

Please login or register to review

Reviews Over Winsen MH-Z19C CO2 Sensor with Cable

Average Rating:

This product has 1 review(s) in total.

Manual: 003109_MH-Z19C-DZ-terminal type CO2 Manual(Ver1.21)-202103.pdf

Product FAQ

Can I power the device with an Arduino or other development board?

This is not possible in most cases. Most development boards (including Uno, Mega, NodeMCU, D1 Mini V3, etc.) have a diode between the 5V pin and the USB input that lowers the voltage. If the voltage from the 5V pin is lower than the required minimum of the device (see specifications) then it cannot function properly. In addition, many development boards can only provide little power. This can also cause it to malfunction. Using an insufficient power supply can even damage the device. Therefore, make sure that you use a suitable power supply and that it is connected correctly. It is advised to verify the supply voltage by measuring it.

The measurements are unstable. What causes this?

In most cases, this is caused by insufficient power supply condition. When the power supply provides too little current, has too low a voltage and/or generates too much ripple, several problems can arise, such as:

Unstable measurements;
Communication error between development board and sensor;
A sensor that doesn't work at all;
Damage to the sensor.

A good quality power supply is required that can supply enough current and has the correct voltage (see sensor specifications in the product description). It is advised to measure the voltage directly on the Vcc and GND pins of the sensor.