Vibration sensors, like other sensors, require calibration testing. The CAL401 calibrator is designed for measuring the output of body sensors produced by Tavator. This device can simultaneously support two body sensors (accelerometers or vibration velocity sensors) along with a tachometer sensor.

For this purpose, a calibrated reference sensor can be placed instead of one of the sensors, or calibration of a two-channel device can be tested for both vibration measurement and phase reference.

This device is also suitable for field testing of the complete measurement loop in field monitors. By disconnecting the sensor from its installation location and connecting it to this calibrator while applying a constant amplitude, the monitor should reflect this value. If there is any discrepancy, the entire path—from the sensor installation point to the sensor, connections, wiring, transmitter, and monitor—must be inspected step by step.

Typically, after overhauling sensitive machines, it is necessary to measure and validate the accuracy of the sensors installed on the machines using this measurement tool.