ifm electronic’s ZZ0214 automation package supplies a complete position feedback solution for single and double-seat valves. The items supplied include the rising stem valve sensor, efector valvis, the mating adapter and the stainless steel actuating element.
efector valvis was designed for feedback of valve positions on rising stem valves with a stroke of up to 80 mm. Using efector valvis means that complex mounting of several individual position sensors on the valve piston is no longer required. Moreover, convenient programming by pushing a button replaces mechanical adjustment to the respective valve positions.
The system operates to the inductive principle. The sensor signals up to three valve positions to the control system: valve open, valve closed and any position in-between, such as seat lift. Three coloured LEDs indicate the damped switching output.
Using the adapter contained in the set, the sensor can be mounted to the common Alfa Laval valves. As an option, ifm offers further adapters for other valve types.
As a result of the optimum distribution of force at the interface from the sensor to the adapter and the adapter-actuator transition, this system is insensitive to mechanical stress such as vibration. Connection is made via the 0,3 m cable with M12 connector.
For more information contact Celia de Beer, ifm electronic SA, 086 143 6772, www.ifm.com/za
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