1. 1. Flow
1.1. Flow velocity (m/s)
1.1.1. Anemometer
1.1.1.1. Hot-wire anemometer
1.1.1.2. Laser Doppler anemometer
1.1.1.3. Ultrasonic anemometer
1.1.1.4. Acoustic resonance anemometer
1.1.2. Positive displacement flow meter
1.1.2.1. Piston flow meter
1.1.2.2. Nutating disc flow meter
1.1.2.3. Lobed-impeller flow meter
1.2. Mass flow rate (kg/s)
1.2.1. Coriolis mass flow meter
1.2.2. Conveyor based method
1.2.3. Thermal mass flow measurement
1.3. Volume flow rate (m3/s)
1.3.1. Differential pressure devices
1.3.1.1. Orifice plate
1.3.1.2. Venturi tube
1.3.1.3. Flow nozzle
1.3.1.4. Dall tube
1.3.1.5. Elbow
1.3.1.6. Pitot-static tube
1.3.1.7. Rotameter
1.3.2. Turbine
1.3.3. Moving vane
1.3.4. Magnetic flow meter
1.3.5. Strain gauge flow meter
1.3.6. Vortex flow meter
2. 2. Pressure
2.1. Medium pressure measurement
2.1.1. Elastic transducer
2.1.1.1. Diaphragm
2.1.1.2. Capsule
2.1.1.3. Bellow
2.1.1.4. Bourdon Tube
2.1.2. Manometer
2.1.3. Barometer
2.1.4. Capacitive pressure sensor
2.1.5. Piezoelectric pressure sensor
2.2. Low pressure (vacuum) measurement
2.2.1. McLeod gauge
2.2.2. Pirani gauge
2.2.3. Ionization gauge
2.2.4. Knudsen gauge
2.3. High pressure (>1000 atm) measurement
3. 3. Level
3.1. Sight glass
3.2. Float level sensor
3.3. Displacer
3.4. Probes
3.4.1. Capacitive probe
3.4.2. Capacitive probe
3.5. Hydrostatic pressure
3.6. Bubbler device
3.7. Resistive tape
3.8. Load cell
3.9. Paddle wheel
3.10. Radiation
3.10.1. Ultrasonic
3.10.2. Microwave radar
3.10.3. Nuclear
3.10.4. Laser
4. 4. Temperature
4.1. Mercury thermometer
4.2. Bimetallic strip thermometer
4.3. Pressure-spring thermometer
4.3.1. Liquid-filled thermometer
4.3.2. Vapour-pressure thermometer
4.3.3. Gas-filled thermometer
4.4. Thermocouple
4.5. Thermopile
4.6. Semiconductor
4.6.1. Thermistor
4.6.2. Resistance thermometer
4.7. Radiation
4.7.1. Total radiation pyrometer
4.7.2. Infrared pyrometer