• When a water-wheel, which is a heart of hydropower generation, is broken, it causes decrease in power generation efficiency as well as breakage in other parts. Early detection of abnormality and maintenance are important. As abrasion or breakage appears in abnormal vibration, monitoring vibration is an effective way to detect abnormality. The VC-3200 vibration comparator can monitor vibration periodically, detect abnormal vibration and output alarm signal. This application is helpful for predictive maintenance such as prevention of an accident.
   
• The VC-3200 can be set up three frequency bands and make Pass/Fail judgment based on rms, peak or power averaging calculated value (same for all bands) on each band. Also it has effective functions such as the comparator delay time setup function and auto operation function. The comparator delay time setup function removes unwanted signal at the time of starting measurement and the automatic operation function can control a timing of judgment by inputting a control signal from external device such as PLC*. Although the VC-3200 can be operated by 24VDC (22 to 26VDC) as standard, you have an alternative to use it at 100 VAC by connecting the optional AC/DC convertor VC-0352.
   
• Connecting the VC-3200 to a PC via RS-232C interface enables storing the measured data and so on.
   
• By connecting a pair of commercially sold headphones to the VC-3200, it is possible to make hearing check of vibrating sound. Moreover, it can be used instead of conventional stethoscopic probe. Output signals are provided for each band, enabling an observation for vibration phenomenon on each frequency band.

* PLC: Programmable Logic Controller