Gas flow sensor

1. Gas flow sensor has display function: can display cumulative flow, instantaneous flow, pressure and temperature simultaneously
2. The gas flow sensor has a communication function: It can perform RS485 communication with the intelligent port of the substation, and can simultaneously output cumulative flow, instantaneous flow, pressure and temperature.

1. Gas flow sensors are widely used, which greatly affects the development of all walks of life in society. Such as industrial production, scientific experiments, ensuring product quality, improving production efficiency, saving energy, and promoting the development of science and technology play an important role.

2. Today, there are many types of gas flow sensors, such as throttling, volumetric, vortex, electromagnetic, thermal, and ultrasonic. Most of them collect the temperature and pressure signals of the fluid and convert them into flow. However, due to the unstable gas flow state, the flow measurement accuracy of the gas flow sensor is affected. The plug-in gas flow sensor, invented by American scientists, has revolutionized the flow measurement and achieved the goal of directly measuring fluid mass flow. With the continuous development of science and technology, gas flow sensors have become small, low cost, good stability, low power consumption, and can be mass-produced.
3. At present, small and strong products are urgently needed products in today's society, and gas flow sensors are more and more able to meet this demand of society with the advancement of science and technology. Gas flow sensors are becoming more and more miniaturized, and their detection performance is also positively contributing to the development of society.
4. Looking at the domestic market, many technologies are still immature. Most of the products on the domestic market are imported. In countries with developed technologies such as Switzerland, the Netherlands, Europe, America and Japan, they are developing their gases with their advanced semiconductor technology. Flow sensors have achieved impressive results. However, in general, such products on the market are not compatible with each other, the products have not yet been commercialized, and the applications have not been universalized. The gas flow sensors with high precision meet the requirements are still under further research and development. Therefore, the gas flow sensor has become a new technology product with normal development and broad prospects.
5. In general, with the development of science and technology, domestic gas flow sensors will be able to replace imported gas flow sensors. Gas Flow Sensor - Classification Introduction The gas flow sensor measures the volumetric flow rate of the fluid under test. The measurement principle does not involve the effects of temperature, pressure, density and viscosity of the fluid. Its classification is as follows:
1. The physical quantity of gas flow sensor can be divided into gas flow sensor such as displacement, force, speed, temperature, flow, gas composition. 2. Gas flow sensor can be divided into strain type, piezoelectric type, piezoresistive type, inductive type according to working principle. Capacitive, photoelectric, resistance, capacitance, inductance, voltage, Hall, photoelectric, grating, thermocouple and other gas flow sensors.
3. The gas flow sensor can be divided into: a switch type gas flow sensor whose output is a switch quantity ("1" and "0" or "on" and "off") according to the nature of the output signal; the output is an analog type gas flow sensor; A digital gas flow sensor that outputs a pulse or code.
4. The gas flow sensor is divided according to the way of converting energy:
1) Energy conversion type: such as: piezoelectric type, thermocouple, photoelectric sensor, etc.;
2) Energy control type: such as: resistive, inductive, Hall-type sensors and thermistors, photoresistors, humidity-sensitive resistors, etc.;
5. Gas flow sensors can be divided according to the working mechanism:
1) Structural type: such as: inductive, capacitive sensor, etc.;
2) Physical properties: such as piezoelectric, photoelectric, various semiconductor sensors, etc.;
6. The gas flow sensor can be divided into: according to the form of the output signal:
1) Analog: The sensor output is the analog voltage;
2) Digital: The sensor output is digital, such as: encoder sensor.
Gas flow sensors are used in a wide variety of applications and in a variety of classifications.