Ada Schmidt Hammer 225 А00191 [31/36] Schmidt hammer 225

Schmidt Hammer 225

MEASUREMENT FOUNDATION

Test Hammer should be regularly maintained, general maintenance only needs to take out the movement, wipe the dirt

of collision surface between rebound hammer with pole and center guide rod, then wipe center guide rod to use cleaning

cotton with watches oil, and calibrating on steel anvil at last. Generally through these simple maintenances, Test Ham-

mer will return to normal working condition. In particular heavy workload of test that makes general maintenance at any

time is very necessary. Generally pointer slider parts should not be demolished, within the calibration period, in the case

of the test hammer use frequently, for the movement part to clean, the rest can wipe with clean cotton yarn, that can

ensure that Test Hammer in normal technical condition. Test Hammer disassembly and installation procedures.

Rebound rod hit the ground lightly and press tail cover, make the button disengaged orientation ange, rebound rod shot

out.

Unscrew end cap and remove the compression spring, and unscrew front-end nut cap and semicircular clasp.

Test Hammer stands up which makes the movement upward, when the guide ange arrive at the top, hand-touch hook,

make hammer and hook disengaged, then,hold the hook by hand, take out the movements part.

Decomposition of movement, that can use the rebound hammer hit the rebound rod, make the rebound pole exit from

center guide rod and note that the buffer spring inside the rebound pole can’t lose. Will the Center guide rod take out

from the rebound hammer, thus complete the job for decomposition of movement. Guide ange and the center guide rod

has pasted rmly by 502 glue, generally open it is needless; FRL (rebound hammer, tension spring and spring seat) can

not be open arbitrarily too.

With the screwdriver rotate the Pointer-axis from the tail of instrument, spin to the pointer shaft separated from the pre-

xed block, with a small clamp to slicit pointer shaft, thus complete decomposition of Pointer Assembly.

When necessary, can use the screwdriver remove the rebound values graduate scale, the rule has 3 scales line: 0 scale,

100 decoupling calibration scale line and steel anvil calibration values scale line. Therefore, has no install

graduate scale can also be calibrated to the Test Hammer.

The above are procedures for demolition and decomposition of Test Hammer, on the contrary the process of assembly

and disassembly, demolition of part last that is installed rst. However, all parts tted to the instrument should be mea-

sured the size in prior, especially the two key dimensions on movement, working length of tension spring is 61.5+0.3mm,

standard tensile length is 76mm (measure from outside of instrument after revised).