16
HK-D_HK-DB-BA-e-2020
6
Special Operating Instructions
- The replacement of a rebound sensor must always be carried out with the system
switched off, otherwise the special type of rebound sensor cannot be detected
automatically afterwards. It is even possible (with the instrument switched on) to
damage the base board of the hardness tester.
- Under normal conditions, the current measured value can be printed out and stored
if the value der
【
Anzahl of Rückpralle
】
noch is not sufficient. If printing or saving is
required at this point, Taste
【
Average
】
can be pressed to terminate the
measurement. Afterwards the printout can be made.
- The functions
【
Auto Save
】
,
【
Auto Print
】
, and
【
Auto Trans.
】
sind inactive if the
key
【
Average
】
betätigt has been set to terminate the measurement in advance.
- Only the type D and DC rebound sensors have the function of measuring tensile
strength, so the default setting
σb
】
/
σb
】
cannot be changed if other types of rebound
sensors are used. If the presetting has been made using the D/DC rebound sensor in
【
σb
】
gewechselt, the setting
【
Hard
σb
】
in
【
Hard
】
will be changed if another
rebound sensor is installed (instead of the D or DC type).
- If
【
σb
】
(tensile strength) has been preset, the hardness scale cannot be set (the
cursor skips it).
- Not all materials can be converted to every hardness scale, the hardness scale
automatically returns to Leeb hardness (HL) as soon as the material has been
changed. It must be entered
【
Material
】
vorab when the measuring parameters are
preset and only then the hardness scale
【
Hardness Scale
】
.
7
Detailed test procedure description
7.1 Commissioning
Press the key to switch on the hardness tester. The following is shown:
The tester checks the rebound sensor in use and shows it on the display. At this point
it should be carefully checked that it is correctly displayed, after which the main display
is shown.
7.2 Switching on and off
Summary of Contents for HK-D
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