ADA INSTRUMENTS Schmidt Hammer 225, Руководство по эксплуатации

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Schmidt Hammer 225
MEASUREMENT FOUNDATION
2
Operational procedures of test hammer
Test hammer proper operation can improve the testing accuracy. Test hammer in operation throughout the entire process
should pay attention to hand holding instruments posture correct: namely, One hand hold the front part of the Test Ham-
mer, the other hand hold and pressure the tail of end cover. The basic essentials of operation are: slowly and evenl with
the pushing press, vertical alignment measurement surface and no shaking.
Test hammer procedures are as follows:
1. Return zero
Test hammer strike rod withstand the concrete components surface, press tail cover lightly, positioning pins disengaged
hook-oriented lange; slowly lifting instrument, under the action of the compression spring, strike rod shots out, hook and
rebound hammer hung at the same time-oriented lange will be brought to zero pointer to the pointer slider, that red scale
line on the pointer slider overlap the zero line and Gauge.
2. Test Hammer action to obtain the energy
Would have been shot out of the strike rod targeting the surface of concrete component measuring point, even slowly
pushing and press Test Hammer, strike rod has been pressed into the Test Hammer, strike tension spring stretched; when
the instruments to push down to a certain location , hook back on oriented lange contact to the end of adjust bolt on back
cover and starts turn, to hook disengaged strike hammer monment, strike tension spring elongation up to the require
standard length 75mm, at this time has been nominal kinetic energy of 2.207Nm, rebound hammer in a hair-trigger state.
This operation process should be always maintained Test Hammer axis perpendicular to the inspecting surface, aviod
pushing and pressure force is too big and speed too fast.