The TK81 Tunable Filter/Vibration Meter is a low-cost, portable handheld instrument for basic vibration measurements. It can display vibration in both unfiltered (overall) and filtered modes. It accepts inputs from displacement, velocity, and acceleration transducers, but does not provide power for them.
Its filtering capability is particularly useful for diagnosing vibration problems occurring at particular frequencies on all types of machinery. The TK81 is powered by a single 9V transistor battery.
