© PCE Instruments
12
8
Calibration
Before first use and after not using the hardness tester for a period of time, it must be calibrated
by means of the Leeb test block.
Go to calibration mode via menu item 7.
x/5
000
Calibration
1/5
772 HL
Calibration
The device shows values in HLDL. In order to calculate your HLD value, please refer to the
conversion chart in 10.5.
9
Battery replacement
•
Unscrew the cover on the back side of the display unit.
•
Remove the battery.
•
Insert the new battery. Observe correct polarity.
•
Screw the cover back on.
•
Switch on the device to find out if it works properly.
10 Additional information
10.1 Specifications of impact device
Type of impact device
D (PCE-2500N), DL (PCE-2600N)
Impact energy
Impact weight
11 mJ
5,5 g
Ball hardness
Ball diameter
Ball material
1600 HV
3 mm
Tungsten carbide
Diameter of impact device
Length of impact device
Weight of impact device
20 mm
147 mm
50 g
10.2 Sample requirements
Max. sample hardness
940 HV
Max. sample roughness Ra
1.6 μm
Min. sample weight
Measurement without stabilisation
Stabilisation
Coupling necessary
>5 kg
2 ~ 5 kg
0.05 ~ 2 kg
Max. sample thickness
Measurement without coupling
Coupling necessary
>5 mm
≤5 mm
Min. depth of hardened layer
0.8 mm
Measure 5 measuring points of the Leeb hardness block.
The impact direction must be vertically down.
After the measurement, the hardness tester will show the
average value.
Press the arrow keys to set the average value to the
standard value of the test block. (You can set the value
up to 15 HL higher or lower). Confirm with the
Menu/Confirm key. “Calibration complete“ will be
displayed.
