Classification of measurement principles

1. Mechanics principles: instruments that fall into this category include differential pressure type and rotor type using Bernoulli's theorem; impulse type and movable tube type using momentum theorem; direct mass type using Newton's second law; use fluid momentum Principle target type; turbine type using the angular momentum theorem;

2. Electric principle: The instruments used for this kind of principle include electromagnetic, differential capacitive, inductive, strain resistance, etc.

3. Acoustic principle: There is an ultrasonic method for flow measurement using the acoustic principle. Acoustic (shock wave) etc.

4. Thermal principle: There are calorimetric, direct calorimetry, indirect calorimetry, etc. to measure flow using the thermal principle.

5. Optical principle: laser type, photoelectric type, etc. are instruments belonging to this type of principle.

6. Originated from physical principles: nuclear magnetic resonance, nuclear radiation, etc. are instruments belonging to this type of principle

7. Other principles: there are marking principles (tracing principles, nuclear magnetic resonance principles), related principles, etc.

Want to know more about the precession vortex flowmeter, thermal gas mass flowmeter, electromagnetic flowmeter, vortex flowmeter, turbine flowmeter, ultrasonic flowmeter, please pay attention to the official website of Hollysys Industrial Control Instruments.