Easy-to-understand display of carbon dioxide concentration with colors and numbers
MATECH, a creative brand in Kyoto that mainly plans and develops smartphone and tablet related products, is a USB stick type Developed carbon dioxide concentration meter "AirChecker". Started selling on Amazon. The price is 4,980 yen.
Outline of "AirChecker"
In addition to being able to measure carbon dioxide concentration in the same way as using a normal USB memory stick, it is compact and easy to carry. As long as you have a USB port, you can easily measure the CO2 concentration.
In addition, you can use the USB-USB extension cable to install it in a place away from the USB port. It can be easily installed on the counter near the entrance where people come and go frequently.
Especially in restaurants, it is possible to easily confirm that clean air is being maintained as numerical values, giving users a sense of security.
Even in a car, measurement can be started simply by inserting it into the USB-A port provided in the car, and even if there is no USB-A port, there is no problem as long as there is a USB cigarette lighter socket.
Because the CO2 sensor uses expensive module parts, general products are expensive. On the other hand, the USB stick type carbon dioxide concentration meter AirChecker adopts a simple structure that uses a USB power supply as driving power and a sensor that is focused on measuring CO2 concentration. As a result, we were able to achieve a reasonable price.
Main features of "AirChecker"
Real-time measurement
Since the CO2 concentration is updated every second, real-time measurement is possible. It has a built-in high-performance sensor "NDIR infrared carbon dioxide (CO2) sensor" and performs highly accurate measurement. Continuously measure the air condition of the installation site.
Displaying Numerical Values
The status of carbon dioxide concentration can be visualized by displaying colors and numerical values side by side, even for events that are difficult to understand with numbers alone. It is color-coded into four types of blue, green, yellow, and red, and the state of CO2 concentration can be distinguished from normal to abnormal from blue to red.
As an indicator, if the LED light on the display is yellow or above, it is recommended to use it as a measure of ventilation.
By visualizing the air condition, it is possible to grasp the overcrowded situation appropriately, so it is easy to understand the timing of ventilation.
In addition, when the CO2 concentration changes from yellow to red, an alarm sounds, and the timing of ventilation is also audibly notified.
NDIR Method Measurement
The NDIR method is used for measurement. This NDIR is an abbreviation for Non Dispersive InfraRed, and the NDIR method is a gas concentration measurement method that utilizes the unique absorption wavelength region of each gas.
There are many different ways to measure gas concentration, but according to the company, most of them involve chemical changes or changes in the sensor itself, which also change the gas being measured.
On the other hand, the NDIR method, which measures absorbance, can measure the concentration without affecting the target gas.
Related information
https://amzn.to/35ozXOB
Composition / Maki Shimizu