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Notes for Buy co2 sensor

When many people buy co2 sensor, there will be such and other misunderstandings in the selection, thinking that the product price is low, so the quality must be poor, and that the larger the measuring range, the better, etc…..

So how to choose the Buy co2 sensor correctly?

FS00302-4

1. Is the higher the price the better the product?

In the cognition of many people, low-priced products are low-end products, which must not be as good as high-priced ones. This kind of fixed thinking will easily make you suffer a lot when buying co2 sensors.

Different sensors will have different prices due to different research and development principles, performance, functional design, and application scenarios. Carbon dioxide gas sensors on the market cost tens of dollars a piece, or hundreds or thousands of dollars a piece. Different sensors are suitable for different requirements and different usage scenarios.

If your sensor is to be used in an air quality detector with a market price of several hundred yuan, then there is no need to choose a sensor that costs thousands of yuan.

When choosing a sensor, in addition to looking at the “price”, you need to choose according to the application scenario and requirements within the scope of your own product needs, and you don’t have to pursue the so-called “high-end”.

Air Quality Meter

2. Is the larger the measuring range the better?

The range of the sensor is also an important indicator when choosing, but there is no need to pursue a large range too much. The range selection and price have the same effect, that is, to choose the sensor suitable for your own products.

In the natural environment, the normal content of carbon dioxide gas in the air is 0.04%, which is 400ppm, and it may reach 500ppm in densely populated cities. When there is no one in the room, the carbon dioxide gas concentration is generally around 500 to 700 ppm.

Generally speaking, when the indoor carbon dioxide gas content is above 5000ppm, the human body’s functions will be seriously confused, causing people to lose consciousness, confusion, and even death due to lack of oxygen. Therefore, the carbon dioxide sensor used for indoor ambient air quality detection can be satisfied by selecting a range of 0-5000ppm.

Therefore, when selecting, as long as the sensor range covers the carbon dioxide gas concentration under the extreme conditions of the use environment, it is not necessary to pursue too much range.

FS00306

3.What is serial output? How should the output method be selected?

To put it simply, the serial port output is the specific value that the sensor can output the gas concentration, and the analog output is the output of sound, photoelectric and other alarm signals.

The choice of sensor communication mode needs to consider the requirements of communication transmission, the serial output reading is more intuitive, and the anti-interference performance and reliability are high.

Agricultural greenhouse

4. How to choose between Solid-state electrolyte CO2 Sensor Module and NDIR CO2 Sensor Module?

The choice of Solid-state electrolyte CO2 Sensor Module and NDIR CO2 Sensor Module mainly depends on the humidity conditions in the application environment. If the environment humidity is low, such as smart home, fresh air system and other environments, you can choose NDIR CO2 Sensor Module; if the humidity is high, like For agricultural greenhouses, smart breeding, etc., it is best to choose a Solid-state electrolyte CO2 Sensor Module that is resistant to high-humidity environments.

Model Number Model Detection Range Communication Method Product Size Product Features
FS00302
FS00302 400~5000ppm (Extendable to 10000ppm)
UART (3.3V_TTL Voltage level)
32.6×20.1×9.0 mm
  • NDIR technology
  • 10 years service life
FS00306
FS00306 400~5000ppm (Extendable to 10000ppm)
UART (3.3V_TTL Voltage level)
17.8×20.6×15.4 mm
  • Solid electrolyte principle
  • Water-proof and corrosion-resistant
FS00303
FS00303 400~5000ppm (Extendable to 10000ppm)
UART (3.3V_TTL Voltage level)
17.8×20.6×15.4 mm
  • Solid electrolyte principle
  • Water-proof and corrosion-resistant

5. How to choose the power consumption of the sensor?

Power consumption is the amount of energy consumed by the sensor per unit time. Generally speaking, the lower the power consumption of the sensor, the less power it consumes, and the longer the battery life.

Especially for battery portable instruments, the carbon dioxide sensor with low power consumption can prolong the battery life.

FS00306

6. What is the warm-up time? Is the shorter the time the better?

The light source and detector in the infrared carbon dioxide gas sensor need to be energized to reach the best state in order to read the accurate value. The time to reach the best state is the warm-up time.

Different types of sensors require different warm-up times, some take a few minutes, others just a few seconds. In fact, preheating is for the stability and accuracy of the sensor, and has nothing to do with poor product performance.

The above are the 6 precautions for Buy co2 sensor selection, so don’t step on the thunder next time!

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