Vibrating limit level detection
NSV type level monitors of KOBOLD Messring GmbH, Hofheim, are almost free of maintenance and abrasion, because they operate without mechanically moving parts. The devices especially designed for use in powdery and fine-grained bulk solids work according to vibrating fork principle. Thereby a fork especially optimised for use in bulk solids is continuously put into vibration. When it is covered by a medium, the vibration behaviour changes.
Mountable evaluation electronics are well protected at upper device ending in a protection class IP 65 plastic terminal box. It detects vibration change and displays it using a red LED. An additional relay output is provided for signal transmission.
The rugged limit level detectors of stainless steel have compact construction and high insensitivity against material humidity. They don’t need calibration and are suitable for solids with low mean density. Mounting is possible from the top and from the side so that devices are not only suitable for protection against over-filling, but also to signal minimum level very well. Specific versions with elongated neck pipe make it easy to install vibrating forks in applicable height.
