Small thermal gas mass flowmeter measuring medium: single component or stable mixed dry gas (excluding acetylene and hydrogen) medium flow rate: conventional: 0.56-56Nm/s, maximum flow rate can be extended to 100Nm/s
1. Measurement principle of small thermal gas mass flowmeter:
When two temperature sensors are placed in the medium in a thermal flowmeter, one sensor is heated to a temperature above the ambient temperature, and the other temperature sensor is used to sense the temperature of the medium. As the flow rate of the medium increases, the heat carried away by the medium also increases. The temperature difference between the two temperature sensors will change with the flow rate of the medium. Based on the proportional relationship between the temperature difference and the flow rate of the medium, the flow rate Q of the fluid can be obtained. Currently, most thermal flow meters are used to measure gases, and only a small number of thermal flow meters are used to measure the flow rate of small liquids.
2. Technical characteristics of small thermal gas mass flowmeter:
1. Industrial aviation interface, quick installation;
2. Sensitive measurement response speed and good real-time performance;
3. Wide range ratio, high accuracy, and good repeatability;
4. Measurement without temperature and pressure compensation;
5. Capable of measuring the temperature of the medium;
6. Good seismic performance and long service life;
7. Digital design facilitates automation and integration;
8. The shell material includes anodized aluminum and 304 stainless steel.
3. Technical parameters of small thermal gas mass flowmeter:
1. Measurement medium: single component or stable mixed dry gas (excluding acetylene and hydrogen)
2. Medium flow rate: Conventional: 0.56-56Nm/s, maximum flow rate can be extended to 100Nm/s
3. Output signal: 4-20Ma (maximum load 500 Ω) RS485
4. Power supply: DC 24V power supply with a power not less than 25W
5. Measurement accuracy: ± (1.5+0.5FS)%
6. Medium temperature: -10 ℃~+60 ℃
7. Pressure rating: 1.6MPa (standard), higher pressures can be customized
8. Pipeline material: 304 stainless steel, anodized aluminum