KERN & SOHN HMP - Manual (Page 5)

Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected] Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.sauter.eu
Instruction Manual
HMP
HMP-BA-e-1211 5
Table 4-1
4.3 Read Measured Value
After each impact operation, the current measured value
will be displayed, to the impact times always one is added.
The buzzer alerts with a long howl if the measured value is
not within the valid range. If the presetted impact times are
reached, the buzzer alerts with a long howl. After two
seconds it will alert a short howl and the mean measured
value will be displayed.
4.4 Notes
* Replacement of the impact device must be done during
the instrument is powered off. Otherwise the main body
cannot identify the type of the impact device. This might
damage the circuit board of the main body.
* The current test value cannot be saved if the impact
times are less than the presetted times value.
* Only D and DC type of impact device have got the
function of strength test option. It isn’t possible to change
the setting to strength tests by using other types of impact
device. The setting will be automatically set to hardness
testing after replacing the impact device; no matter the
setting is hardness testing or not before.
* Not all materials can be converted to all hardness scale
values. The hardness scale is reset to HL automatically
after changing material. So, material has to be selected
first before changing the hardness scale.
5. Operation Details
5.1 Power on/ off
The key has to be pressed to power on the instrument.
Be sure whether the impact device is plugged in before
powering on. The type of impact device will be
automatically detected while powering on. This information
will be displayed on the screen. Users should take notice
to this type. After a few seconds, the screen will exit and
the main display screen is entered as follows:
The hardness tester can be turned off by pressing the
key while it is working. It has got a special memory which
retains all settings even if the power is off.
5.2 Material Setting
The key has to be pressed to change the material to
the desired setting. Hardness scale is automatically
recovered after material presetting has been changed.
Material has to be selected first, then hardness scale.
In hardness testing, following materials can be selected:
Steel and cast steel, cold work steel, stainless steel, grey
cast iron, nodular cast iron, cast aluminium alloys, copper-
zinc alloys, copper-aluminium alloys, wrought copper and
wrought steel. The relationship between the material
number displayed on the screen and the material is as
follows:
Table 5-1
Material No..
Material
0
1
2
3
4
5
6
7
8 Steel and cast steel
Cold work tool steel
Steinless steel
Gray cast iron
Nodular cast iron
Cast aluminium alloys
Copper-Zinc alloy
Copper-Aluminium alloy
Wrough copper
In strength testing following materials are selectable:
Mild steel, high-carbon steel, Cr Steel, Cr-V steel, Cr-Ni
steel, Cr-Mo steel, Cr-Ni-Mo steel, Cr-Mn-Si steel, super
strength steel and stainless steel. The relationship
between the material number displayed on the screen and
the material is as follows:
Table 5-2
5.3 Hardness/ Strength Setting
The key has to be pressed to switch between
hardness testing and strength testing ( бb).
Note: Only D and DC type of impact device have got
the function of strength testing. So, for all other types
of impact device, only hardness testing is possible.