NOVOTEST T-UD3, Руководство по эксплуатации, Страница: 31 / 53

Operation Manual
Hardness Tester NOVOTEST T-UD3
Page. 31
For hardness tester calibration ONE (one-point graduation) or TWO (two-point calibration)
reference hardness measures with the maximum and minimum values are required at the controlled
range of the hardness scale.
For example, there are two samples of steel with a known hardness value of HRC, and the
instrument shows a stable deviation when measuring the hardness on it.
1. To calibrate by two points, select <CALIBRATION> in the main menu (Figure 2.34).
Figure 2.34 – Grading
2. Use the navigation keys to select a cell for calibration, for example, HRC for steel.
3. Press < >, and the calibration window will open on the display (Figure 2.35).
Figure 2.35 – The Graduation window
4. Press < > key to select the number of the calibration points. If there are two samples, user
must select 2 using the keys < > and < >, to confirm press < > (Figure 2.36).
Figure 2.36 – Two points calibration