The present invention for measuring a soil displacement meter (ROD EXTENSOMETER) or, building or civil construction progress water cracks that are used to accurately and precisely measure the surrounding deformation state such as a Public movement of one ground needle of construction-site rock locations It relates to a crack measurement system (CRACKMETER), other soil or miniature vibrating the displacement gauge to be used in the instrument for the displacement measurement is configured as a vibrating wire in combination with the spring of a structure, such as expression displacement meter (mINIATURE vIBRATING WIRE dISPLACEMENT GAGE), the coil of the transformer according as to by applying a pulse to magnetize the vibrating wire calculating the change in resonant frequency by vibrating wire tension changes in then outputs the resonant frequency in the unit of strain or strength by measuring the output device, a combination of a coil spring in the VW even the length of the vibrating wire shorter the overall size to maximize the amount of displacement Choi By Tuesday it is an object to provide a displacement meter that can be used interchangeably on all instruments used in civil construction.
展开▼
