Wave after wave of technological innovations in the global sensor sales market require upgrading, showing a trend of continuous growth. In the current sensor field, with the integration of MEMS processing technology and other methods, sensors are gradually developing towards intelligent systems, miniaturization and low power consumption. The gas sensors used at this stage are mainly based on semiconductor materials, photoelectric catalysis and optical technology.

Wave after wave of technological innovations in the global sensor sales market require upgrading, showing a trend of continuous growth. In the current sensor field, with the integration of MEMS processing technology and other methods, sensors are gradually developing towards intelligent systems, miniaturization and low power consumption.

Gas sensors have always been a key segment in the sensor field. According to the basic technical principle, AZ34063AMTR-E1 gas sensor can be divided into semiconductor material gas sensor, catalytic combustion device gas sensor, photoelectric catalytic gas sensor, electronic optical gas sensor and other types. The gas sensors used at this stage are mainly based on semiconductor materials, photoelectric catalysis and optical technology.

Low power consumption has always been a very concerned issue in the sensor field. With the development of the market, gas sensors in a single field of the market are gradually developing towards multi-purpose integration. Order software gas sensors are slowly being replaced by composite gas sensors, which simultaneously detect various characteristics of multi-component steam including concentration value, total flow, temperature, ambient humidity, working pressure, etc., rather than just independent detection of index values. New materials and improvements in MEMS technology have also driven a major step toward miniaturization of sensors. At present, gas sensors generally require small packages to integrate gas sensors, data signal collection, information resource management, data storage correction, temperature compensation, and their data sockets.

Sensirion Gas Sensors

Sensirion has been the industry's leading overhead manufacturer of air flow meters. The air flow meters of the group are known for their accuracy and stability.

The SFM series products based on SFM3000 have improved the functions of the sensors of various versions on this basis. While each version number differs in functionality, they are all created based on SensirionCMOSens technology. In short, CMOSens technology enables sensor elements to integrate simulated analog and data signal analysis power circuits onto a small CMOS silicon integrated ic. Tightly integrating the sensor with the signal analysis power circuit ensures that the fast analog sensor data signal can be instantly enlarged and intelligent in the area where it occurs, making it immune to interference. This is why sensors from the Sensirion Group measure very accurately and consistently. At the same time, the reliability of components has also been certified for a long time because the technology eliminates the common fault-prone spot welding.

The SFM3019 is a data steam flow meter with more model specifications on aspirator equipment. The overflow design of the SFM3019 results in extremely low losses across the inductor elements, which is one of the factors that makes this signal widely used in aspirator equipment.

Compared to its peers, the SFM3019 has limited air inlet standards and can accurately measure gas and O2 flow rates up to 240slm with very high accuracy and speed. The machine equipment can output 16-bit analog signals with a refresh rate of 2kHz in data signal transmission. The data signal and temperature compensation are resolved by an internal normalization process. In addition, with the data 2-wire socket, an immediate connection to a microprocessor is possible. Under the maximum speed accurate measurement, the SFM3019 has a high precision of 3% mv, and the response time is sufficient and fast. According to the high quality of the existing key processing technology and the development trend of multi-integration fields, Sensirion does have various functions in the field of air flow meters, such as integrated cleaning, data sockets, etc.

Senseair Gas Sensor

The popularity of Senseair sensors should come from their technical expertise in combustible gas detection, especially infrared CO2 detection. Senseair's vapor sensor technology is excellent in this field, especially in the detection of various risk flammable gases, they are known as the most reliable in the industry.

Senseair's gas sensor control modules offer significant advantages. Taking the excellent performance of the CO2 sensor control module K30FR as an example, in terms of response time, it should not have its own gas sensor to ensure fast response speed.

The K30FR test cell is well maintained by particle filtration and is designed for rapid diffusion without all external pumps. In principle, detection is the non-scattering spectrum analysis technology that Senseair is best at, which can accurately measure CO2 gas of 0-5000ppm, and the detection requirement is within the range of ±3%mv. Under the working conditions of 0.5l/min pipe cyclone flow rate and its 20s diffusion, it can be guaranteed within 2s at 2hz accurate measurement speed, which is also what we must lead.

In terms of functional loss, the maximum current of K30FR does not exceed 600ma, and the average value is about 70ma, which maintains the advantage of low power consumption with excellent detection characteristics.

VIA Gas Sensors

VIA High-tech has strong competitiveness in China's gas sensor field in all countries in the world. The gas sensors under the group use semiconductor materials, photoelectric catalysis and their infrared fundamentals. The hazardous substance detection sensor here is selected according to the MEMS processing technology.

GM-502B is used for exhaled oxygen detector, indoor smoke alarm, etc. The element uses a Si-based micro-heating plate and a hydroxide semiconductor device with MEMS processing technology, which has low conductivity in clean air. Simply put, when there is detected vapor in the ambient mass, the conductivity of the sensor changes. The higher the vapor concentration value, the higher the conductivity of the sensor. The application of a single power supply circuit can convert the change in conductivity into an input and output data signal related to the value of the vapor concentration.

When GM-502B takes the harmful substances as the overall target, it can detect the range of 1ppm~500ppm. The surface resistivity of the sensitive body is in the range of 1kΩ-30kΩ, and the tangent slope of the sensitivity can reach a concentration value above 3.0 and below 0.9. Under the benchmark detection standard, the original feature of GM-502B gas sensor is the main parameter level of the main parameter display field. The electrical equipment characteristics of high sensitivity and fast response repair, excellent process performance under MEMS processing technology, coupled with functional loss of less than 50mW, shows the overall strength.

Summarize

Integrated multi-purpose and its miniaturized processing technology has long been a relatively obvious development trend in the field of gas sensors, and functional loss is also a key link that everyone is trying to reduce. Regardless of the development trend, China's gas sensor superior company has the ability to compete with the world's leading manufacturers.