Check out these youtube videos on Flow meters, Level meters, Temperature and Pressure Gauges, their working principles and parts.

Orifice Flow Meter 01

The Differential Pressure Flow Measuring Principle (Orifice-Nozzle-Venturi) View video..

Coriolis Flow Meter 01

Coriolis Flow Meter (Principle of Operation) by Yokogawa UK View video..

Coriolis Flow Meter 02

The Coriolis Flow Measuring Principle by Endress Hauser View video..

Electromagnetic Flow Meter 01

The Electromagnetic Flow Measuring Principle by Endress Hauser View video..

Electromagnetic Flow Meter 02

M-Series Electromagnetic Flow Meters Animation by Badger Meter View video..

Ultrasonic Flow Meter 01

The Ultrasonic Flow Measuring Principle Video by Endress Hauser View video..

Rotameter 01

Variable area flowmeters by Engnet Global View video..

Rotameter 02

Measuring Principle of Variable Area Flowmeters (from KROHNE) Video View video..

Magnetic Flow Meter 01

Working Of Magnetic Flow Meter Video View video..

Magnetic Flow Meter 02

Magnetic flow meters for liquids : MAG-VIEW Video View video..

Control Valve 01

Control Valves Introduction Video View video..

Control Valve 02

DVC 6010 Calibration on a Caldera Engineering Control Valve View video..

Annubar Flow Meter

How Averaging Pitot Tubes Work – Rosemount Annubar Technology View video..

Bourdon Pressure Gauge 01

Bourdon Vacuum Pump Pressure Gauge Animation View video..

Bourdon Pressure Gauge 02

Bourdon Pressure Gauge Working Animation View video..

Bubbler Tube Level Measurement

Measuring Liquid Level with a Bubbler Tube Level Meter View video..

Capacitive Level Sensor 01

How Capacitive Liquid Level Sensors Work View video..

Capacitive Level Sensor 02

EN Baumer Capacitive fill level sensor for soiled media View video..

Gamma Level Transmitter 01

Gamma Modulator Video by Endress Hauser View video..

Gamma Level Transmitter 02

Measuring Principle Radiometric Video by Endress Hauser View video..

Gear Flow Meter

Turbine Flow Meters vs Oval Gear Flow Meters Video View video..

Helical Screw Flowmeter

Helical Flow Meter, Positive Displacement (Volumetric) View video..

Jet Flow Meter

Fluid mechanics in a multi jet impeller water meter Video View video..

Laser Type Level Meter

Laser Type Level Meter : KANSAI Automation Co., Ltd. View video..

Level Switch

Float Operated Level Switch Operation by SOR Inc View video..

Magnetic Level Gauge 01

Ayvaz MG-33 Magnetic Level Gauges View video..

Magnetic Level Gauge 02

ABB KM26 Magnetic Level Gauge View video..

Megnetorestrictive Level Transmitter 01

Magnetstrictive measuring principle – MTS View video..

Magnetorestrictive Level Transmitter 02

Magnetostrictive level transmitter by BTC Instrumentation View video..

Pressure Gauge

How Pressure Gauges are Made ny WIKA Instruments LP View video..

Temperature Transmitter

How a Pressure Gauge Works by Kodiak Controls Inc View video..