The invention discloses a calibrating device for a
vibrating string type strain
transducer. Mounting blocks at two ends of the
vibrating string type strain
transducer are sleeved on a fixed
lantern ring, the
lantern ring is arranged on a bracket through a locking piece, a spinodal
handle is connected with a dial gauge through a threaded differential
fine tuning mechanism, the dial gauge is arranged on a gauge stand, and two ends of the gauge stand are connected with the threaded differential
fine tuning mechanism and the
vibrating string type strain
transducer respectively; the number of measuring bars is two, the two measuring bars are fixed at the upper and lower ends of a bracket respectively, two ends of an
extensometer are connected with the two measuring bars respectively, the
extensometer is connected with a measuring indicator, and the
extensometer is positioned on one side of the vibrating string type strain transducer; and a
frequency meter is connected with the vibrating string type strain transducer. Based on the differential thread transmission principle, the calibrating device realizes the function of rotary
fine tuning movement, has high measurement accuracy, realizes wide-range measurement, is simple to operate, calibrates the vibrating string type strain transducer through
simulation, and is applicable to the metering calibration for various graded places.