Freeze/Thaw Cabinet & Sonometer

The Sonometer determines changes in resonant frequency of concrete specimens subjected to alternate cycles of freezing and thawing with the Freeze-Thaw Cabinet.  It closely follows design parameters set by the Portland Cement Association.  The apparatus consists of a driver and pickup circuit.  Electrical power is converted by the driver into mechanical vibrations which are imparted to the specimen under test.  The amplitude and frequency of vibrations are controllable having respective ranges of 0 to 30 watts power and 400 to 12,000 cycles per second frequency with an accuracy of better than ±2%.  The actual frequency is displayed on a built-in digital counter.  The driver is completely portable and comes with a 6 foot plug-in connecting cable.