Distance of center of the
two indentations
Distance of center of the
indentation to sample edge
Type of Impact
Device
Not less than (mm)
Not less than (mm)
D
、
DC
3
5
DL
3
5
D+15
3
5
G
4
8
E
3
5
C
2
4
4.5 Read Measured Value
After each impact operation, the LCD will display the current measured value, impact
times plus one, the buzzer would alert a long howl if the measured value is not within the
valid range. When reaching the presetting impact times, the buzzer will alert a long howl.
After 2 seconds, the buzzer will alert a short howl, and display the mean measured value.
4.6 Notification
Replacing the impact device must be done during Power off. Otherwise the main body
could not identify the type of the impact device, and it may damage the circuit board of
the main body.
You could not save the current test value if the impact time is less than the presetting
times value.
Only type D and type DC of impact device have the function of strength test option. You
can not change the setting to strength testing when using other types of impact device.
The setting would be set to hardness testing automatically after replacing the impact
device whether the setting is hardness testing or not before.
Not all materials could convert to all hardness scale value. The hardness scale is reset
to HL automatically after changing the material. So select material firstly before
changing the hardness scale.
11
201
