Manual Surface Roughness Tester
General information
Limit Surface Roughness Tester is small in size, leight weight and easy to use and operate.
Probe is of diamond inductance type. Movement of probe by driven mechanism and with
adjustable driving stroke. Memory for 7 measurments. Automatic off 5 minutes after latest
key operation or manual off. Built-in lithium rechargeable battery. The instrument is
compatible with standards ISO, DIN, ANSI and JIS.
Specification
Parameter
Range
Ra Rq
Rz Rt
Accuracy
Profil digital filter
Probe radius
Probe force
Max driving stroke
Cut off length
Adjustable leg
Dimension LxBxH
Weight
Start
Push Ө button. Manual off push Ө button again.
The instrument restores setting from last measurment.
Setting
Select cutoff length. See fig 5. Press CUTOFF button for select.
Select Traversing length. Press RANGE button. See fig 6. Select L1, L2..L5
with ▲▼buttons. Confirm by press RANGE button.
Select filter. RC, PC-RC, GAUSS, D-P. See fig 6. Press DEL/MENY button for
3 seconds until FILT shows on the display. Select with ▲▼buttons. Confirm by
press DEL/MENY button.
Select metric or imperial. Press DEL/MENY button for 8 seconds until UNIT
shows on the display. Select with ▲▼buttons, um for metric or uin for imperial.
Select parameter Ra, Rz, Rq, Rt. Se fig. 7. Press RaR button.
Ra. Average deviation of profile within sampling length.
Rz. Difference between the average of 5 max peaks and average of 5 max
valleys.
Rq. Root mean square of profile deviation.
Rt. Difference beetween max peak and max valley.
Operation Check settings and battery capacity.
Clear the surface to be measured.. Place the instrument correctly, stably and
reliably on the surface to be measured. Important that sliding trail direction is
Ra, Rz, Rq, Rt
µm
0,025 – 16
µm
0,02 – 160
± 10 %
Gaussian, RC, PC-RC
µm
5
Nm
4
mm
17,5
mm
0,25 - 0,8 – 2,5
mm
0 – 23
mm
150x55x50
g
420
2
English