Periodically (or offline) vibration monitoring is carried out by measurement staff. They use handheld devices or are equipped with a mobile measurement system. Measurement systems like VibroMatrix allow a deeper inspection in case of machine problems and the remedy as well for instance by balancing the machine.
Continuously (or online) vibration monitoring means a permanent measurement and evaluation of machine vibration. There are vibration switches with integrated sensor which simply switch an output if the measured value exceeds the adjusted limits.
More flexibility is provided by modular vibration monitors like of VibroLine series. Because an external vibration sensor is connected different types can be used according to the needs of the measurement position. The powerful signal processing of vibration monitors like VibroLine allow to setup monitoring methods suitable to the type of machine.
Continuously (or online) operating vibration monitors deliver signals about the machine condition. These signals can be optical to indicate users the condition at a glance. They can be digital and make the condition readable for PLCs or the machine control. The sensor signal is often processed to a vibration characteristic as well and analog outputs of the vibration monitor can continuously represent this characteristic, readable for a control.