Encoders turn to multiple uses

Edited by the Engineeringtalk editorial team May 28, 2003

The RHP range of programmable incremental encoders is designed to enable a single encoder to cover multiple applications for the measurement of linear speeds on conveyors, belts, moving webs etc.

The RHP range of programmable incremental encoders has been designed to enable a single encoder to cover multiple applications for the measurement of linear speeds on conveyors, belts, moving webs etc.

These economically priced sensors mount above the moving belt, such that the two wheels are in continuous contact with the surface.

Linear movement produces rotation of the shaft and internal encoder.

For those applications requiring under-belt mount, a spring loaded mounting can be supplied.

The wheels are fitted with polyurethane tyres, which have a high coefficient of friction, enabling the sensor to work on most material without slippage.

A photographically produced interrupter disc and surface mount circuitry, in combination with an LED light source and silicon phototransistors, produce output pulses proportional to shaft rotation and therefore linear speed of the target.

Internal DIP switches enable the end user to program and select the pulse output rate required, up to 1200 pulses per revolution, and also the type of pulse, either NPN or PNP.

All units operate on any voltage between 8 and 30V DC.

For more demanding applications an antijitter option is available to smooth erratic outputs caused by irregular movements of the target.

Typical applications include warehouse distributions conveyors and belt systems, production line monitoring, mining and reclamation services, process plants and oven line baking systems.