Ada Schmidt Hammer 225 А00191 [30/36] Schmidt hammer 225

MEASUREMENT FOUNDATION

Schmidt Hammer 225

However, the movement can be taken to out of the instrument, and attchat a reversed margin, can be measured:

Take the strike hammer hang to hook, single-handedly stretched the spring out of the outer end face of rebound face, by

vernier caliper measured the distance between rebound hammer and the rebound rod collision face is76^3’0°mm.The

value is the standard-length 75 ± 0.3, with compression spring, strike tension spring superimposed on the deformation of

the buffer spring and make the amount of amendment).

4. After take the movement into instrument, check decoupling point, man pointer slide mark line in gauge line 100 overlap

and the rebound hammer decoupling, locking the nut of end cover then rotate and install it.

5. Take adjusted test hammer and calibrate on the steel anvil, if the calibrating rebound values Rm = 80 ±2, then the

instrument can be conrmed generally consistent with standard requirements, and can be put into ofcial uisng.

Generally, in the implementation of the above procedures before, shell Test Hammer Tear-down and cleaned all the parts

and components using gasoline or alcohol. After adjusting to right dimensions of assembly, wipe center guide rod using

cotton with the watches oil, to form a layer of thin oil lm, then the instrument for nal assembly , and nal calibration on

the steel anvil. By following the above procedures for debugging and inspecting, the test results with the Test Hammer of

the device achieved with the same effect.

Cycle Clibrating

According to”JJG817-93”standard on the Test Hammer detector to calibrate(omitted).

Maintenance

To improve the rebound method measuring strength accuracy, except the proper using and operating the instrument,

prociency testing technology, strict implementation of standards. That maintenance instrument frequently and makes

Test Hammer in good technical condition, which are indispensable for the proper use of equipment procedures.

Test Hammer should be disignated someone to use and custody.

After use of instrument should be wiped clean and take it into packaging or box.

Generally. Under should not be arbitrary demolition instrument or incorrect strike, absolutely can’t strike on the steel

plate, otherwise, which may cause irreversible damage to Test Hammer. Lest effect instrument’s using longevity and loss

of precisions.