Surface Roughness Tester with Parameters Ra and Rz

Surface Roughness Tester is designed to measure two parameters (Ra, Rz) using the built-in Diamond pin probe. It has four wave filtering methods (RC, PC-RC, GAUSS & D-P). In addition, these parameters can be downloaded directly to PC via the optional RS-232 CD software & cables. This tester is widely used in production sites to measure the surface roughness of various machinery-processed parts and calculate corresponding parameters.

Easy measurement can be done by placing the sensor on the surface then uniformly sliding along the surface by driving the mechanism inside the tester. The sensor measures the roughness of the surface via the sharp built-in probe. This roughness causes displacement of the probe, resulting in a change of inductive amount of induction coils to generate an analogue signal, which is proportional to the surface roughness at the output end of the phase-sensitive rectifier. The exclusive DSP processes and calculates then outputs the results clearly on LCD.

Features

• Multiple parameter measurement: Ra, Rz
• Highly sophisticated inductance sensor
• Four wave filtering methods: RC, PC-RC, GAUSS and D-P
• Built-in lithium ion rechargeable battery and control circuit with high capacity
• Selectable Metric (µm) and Imperial (µinch)
• Exclusive DSP processes to output measurement results on LCD
• Rechargeable battery via USB cable or Power Adapter

Specifications

• Multiple parameter measurement: Ra, Rz
• Filtering methods: RC, PC-RC, GAUSS and D-P
• Measuring Range
  • Ra: 0.05-10.00 µm / 1.000-400.0 µinch
  • Rz: 0.020-100.0 µm / 0.780-4000 µinch
• Accuracy: <=10%
• Fluctuation of display value: <= 6%
• Sensor
  • Test Principle: Inductance type
  • Material of Probe Pin: Diamond
  • Radius of Probe Pin: 10µm
  • Measurement Force of Probe: 16mN (1.6gf)
  • Vertical Radius of Guiding Head: 48mm
  • Probe Angle: 90°
• Maximum driving stroke: 17.5mm / 0.7inch
• Cutoff Length: 0.25mm / 0.8mm / 2.5mm optional
• Evaluation length: 1-5 cut-off optional
• Driving speed
  • Sampling length = 0.25mm Vt=0.135mm/s
  • Sampling length = 0.8mm Vt=0.5mm/s
  • Sampling length = 2.5mm Vt=1mm/s
  • Returning Vt=1mm/s
• Resolution:
  • 0.001µm if reading <10µm
  • 0.01µm if 10µm =reading <100µm
  • 0.1µm if reading =100µm
• Data output: communicate with PC through RS232C interface (optional, not included in set)
• Metric / Imperial Conversion
• Display: 4 digits, 10mm LCD with blue backlight
• Power: Li-ion battery, rechargeable
• Operating conditions
  • Temperature: 0~50°C
  • Humidity: <80%
• Auto & Manual switch off
• Size: 140 x 57 x 48mm (5.5 x 2.2 x 1.9 inch)
• Weight: about 420g