Digital Surface Roughness Tester with 4 Parameters (Ra, Rz, Rq, Rt)

This multi-parameter tester is designed to measure 4 key parameters (Ra, Rz, Rq, Rt) using its built-in diamond pin probe. Widely used on production sites, it accurately measures surface roughness of various machinery-processed parts and calculates corresponding parameters under selected conditions. It displays all measurements in either metric or imperial units. The device features 4 wave filtering methods (RC, PC-RC, GAUSS, and D-P) and can store 7 groups of measurement results and conditions for later use.

Features

• Measures multiple parameters: Ra, Rz, Rq, Rt
• Advanced inductance sensor technology
• Sensor glides along the surface via a driving mechanism
• Four wave filtering methods: RC, PC-RC, GAUSS, and D-P
• Built-in rechargeable lithium-ion battery
• Compact, lightweight, and user-friendly
• Optional PC connectivity for data analysis and printing via RS232C interface (cable and software not included)
• Manual and automatic power off
• Stores up to 7 groups of measurement results and conditions
• Metric/Imperial conversion
• Exclusive DSP processes for clear LCD display output
• Complies with international standards: ISO, DIN, ANSI, and JIS
• Ideal for use in production sites, laboratories, and workshops
• Easy operation with a large LCD display

Specifications

• Measurement Parameters: Ra, Rz, Rq, Rt
• Filtering Methods: RC, PC-RC, GAUSS, and D-P
• Measuring Range:
  • Ra, Rq: 0.005~16.00 µm / 0.020~629.9 µinch
  • Rz, Rt: 0.020~160.0 µm / 0.078~6299 µinch
• Accuracy: ≤10%
• Repeatability: ≤6%
• Display Fluctuation: ≤6%
• Sensor:
  • Test Principle: Inductance type
  • Probe Pin Material: Diamond
  • Probe Pin Radius: 5µm
  • Probe Force: 4mN (0.4gf)
  • Guiding Head Vertical Radius: 48mm
  • Probe Angle: 90°
• Maximum Driving Stroke: 17.5mm / 0.7 inch
• 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: RS232C interface (optional, not included)
• Memory: Stores 7 groups of measurements
• Display: 4 digits, 10mm LCD with blue backlight
• Power: Rechargeable Li-ion battery
• Operating Conditions:
  • Temperature: 0~50°C
  • Humidity: <85%
• Auto & Manual Power Off
• Dimensions: 140 x 57 x 48mm (5.5 x 2.2 x 1.9 inch)
• Weight: Approx. 420g