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Hydraulic measurement and control

Useful Educational Guides

A guide to selecting a hydraulic flow meter

This guide looks at what flow is, how to decide what flow meter to use, and at some of the more common flow measurement methods that are currently available for use on hydraulic systems.

A guide to pressure transducers

Pressure is a key factor in almost every fluid-power circuit. Pressure transducers can interface that factor with the control system.

A guide to selecting a manual hydraulic directional control valve

Directional control valves are probably the most common of all hydraulic components and are used to control the starting, stopping and reversal of flow in a system. They are often associated with the control of a hydraulic actuator, such as a cylinder or motor, to select either ‘forward, reverse or stop’ but can also be used anywhere in a system where flow needs to be switched between alternative paths. 

A guide to selecting the right hydraulic flow control valve to optimise system performance and efficiency.

In order to control the speed of a hydraulic actuator (cylinder or motor) it is necessary to vary either its displacement or the actuator flow rate. For a standard hydraulic cylinder, varying its displacement (the amount of cylinder piston movement for a given volume of fluid) is not an option since this is determined by the dimensions of the cylinder when it is manufactured.