Frequency measuring instrument VM40C

transmissionvibrationelectromechanical

Triaxial Vibration Monitor Application This instrument contains all components for triaxial measurement and monitoring of vibrations. Main application is the measurement of structural vibration at buildings, bridges, towers, pipelines and other large structures. Such vibrations can be evaluated with regard to possible damages to the structure itself or to disturbance of persons inside buildings. The VM40 was designed for autonomous operation over longer time intervals, for example at construction sites. Properties • Measures building vibration to DIN 4150-3, BS 7385, SN 640312a, Circulaire du 23/07/86 • Integral triaxial accelerometer with high sensitivity • Large LCD for vibration values, main frequency and spectral graphics • Main frequency detection by FFT • Fail-safe user guidance • Time and event triggered data logger for several ten thousand measurements • SMS tranmission of measurements with time stamp at alarm events with optional VM40-MODEM • SMS polling of alarm events with optional VM40-MODEM • Relay output for external alarm devices, eg. light signals • USB interface for transmission of stored measurements to the optionally available PC software • Built-in rechargeable battery with long operating time • Robust and waterproof aluminum case • Optional tripod floor plate with exchangeable feet