Machine Accessories Precision Tools Cutting Tools Material Testing Instruments
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Specifications:
Measuring Ranges: Ra, Rq—0.005µm ~ 16µm / 0.020µ” ~ 629.99µ”
Rz, Rt—0.020µm ~ 16µm / 0.078µ” ~ 629.9µ”
Display Resolution: 0.001µm < 10 µm
0.01 µm between 10 µm < 100 µm
0.1 µm > 100 µm
Cutoff: 0.25mm / 0.8mm / 2.5mm
Display: 4- Digit LCD
Measuring Accuracy: Not more than +/-10% of actual value
Probe Type: Piezoelectric / 5 µm Diamond Tip
Maximum Stylus Force: 4.0mN
Power Supply: Lithium-Ion Rechargeable Battery
Operating Temp: 50° - 113° F
Storage Temp: 32° - 147° F
Humidity: <80%
Surface Finish Definitions:
1)
Ra: Ra is the arithmetic average of the absolute values of the roughness profile ordinates. Also
known as Arithmetic Average (AA), Center Line Average (CLA). The average roughness is the
area between the roughness profile and its mean line, or the integral of the absolute value of the
roughness profile height over the evaluation length
2) Rz: Rz is the arithmetic mean value of the single roughness depths of consecutive sampling
lengths. Z is the sum of the height of the highest peaks and the lowest valley depth within a
sampling length.
3) Cutoff λc: of a profile filter determines which wavelengths belong to roughness and which
ones to waviness.
4) Sampling Length: is the reference for roughness evaluation. Its length is equal to the
cutoff wavelength.
5) Traversing Length: is the overall length traveled by the stylus when acquiring the
traced profile. It is the total of Pre-travel, evaluation length and post travel
6) Evaluation Length: is the part of the traversing length from where the values of the
surface parameters are determined.
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