An update to RotorCheck by Coperion

A ZRD 150 rotary valve with RotorCheck (image courtesy of Coperion)

A ZRD 150 rotary valve with RotorCheck (image courtesy of Coperion)

Coperion will be presenting Version 5.0 of its proven RotorCheck contact monitoring system for rotary valves at booth 4-290 in hall 4 at Powtech 2017 at the end of this month.
In production and processing operations, this system registers, evaluates and reports unwanted contact between the rotor and housing in order to be able to prevent metallic abrasion and thus potential contamination of the product being conveyed. The monitoring principle of the RotorCheck remains unchanged: an electrically conductive connection is created as soon as the housing and rotor come into contact. This is then registered by the control system. In the process, the software filters out coincidental measurement signal fluctuations – such as those caused by the product – and reports potentially dangerous faults to the customer’s control center.
While the signal detection itself takes place in the valve, Version 5.0 allows for the snap-in installation of the control system housing in the control cabinet. The physical separation reduces the amount of space required on the valve while simultaneously simplifying the operation and maintenance of valves with an extraction device. This is particularly advantageous in production environments where dirt, dust, heat, vibrations, moisture or electromagnetic waves may occur. What’s more, the control system is now also accessible even when it is impossible to enter the production area itself for safety reasons, e.g. while CIP cleaning is underway. RotorCheck 5.0 is suitable for deployment in Ex zones in combination with optional Zener barriers.
Hybrid bearings with ceramic roller elements optimize electrical insulation between the rotor and the housing, at the same time, these are considerably more robust than conventional solutions with regard to installation and maintenance. The slip-ring rotor is designed for a service life of around five years and thus only requires around one tenth of the maintenance effort of comparable conventional products with a biannual replacement interval. Thanks to the new lower number of individual parts, Version 5.0 is easier to install and calibrate, which reduces the effort required for quick cleaning in particular.