Take you to understand the instrument and valve working principle
One.Principle of temperature instrument
1. Structure of thin film thermocouple
2. solid-expansion type thermometer
3. Contour diagram of thermocouple compensation wire
4. Thermocouple thermometer
5. Structure of thermal resistance
Two.Principle of pressure instrument
1. Spring-tube pressure gauge
2. Electric point-type pressure gauge
3. Capacitive pressure sensor
4. Bellows pressure sensor
5. Pressure thermometer
6. Strain type pressure sensor
Three.Principle of flow meter
1. Target flowmeter
2. Orifice flowmeter
3. Vertical waist wheel flowmeter
4. Nozzle flow
5. Volumetric flowmeter
6. oval gear flowmeter
7. Venturi meter
8. turbine flowmeter
9. Rotor type flowmeter
Four.Principle of liquid level instrument
1. Differential pressure level gauge A
2. Differential pressure level gauge B
3. Differential pressure level gauge C
4. Principle of ultrasonic measurement of liquid level
5. Capacitor level gauge
Five.Principle of the valve
1. Thin film actuator
2. Piston actuator with valve positioner
3. Butterfly valves
4. membrane valve
5. Piston actuator
6. Angle valve
7. pneumatic diaphragm control valve
8. Pneumatic piston actuator
9. three-way valve
10. CAM flexure valve
11. Straight through single seat valve
12. Straight through double seat valve
Six.control principle
1. Cascade uniform control
2. Nitrogen sealing process control
3.boiler control
4.Furnace cascade
5.Heating furnace temperature measurement
6.Simple uniform control
7.average control
8. Material transfer
9. Liquid level control
10. Principle of measuring molten metal with an intrusive thermocouple
