Description
Overview
The GAOTek Surface Roughness Tester with Sampling Len (2 Way Charging) is designed to measure plane surface, canonical surface and cylindrical surface of various sampling length 0.25, 0.08 and 2.50. It has four parameters Ra, Rz, Rt and Rq with large measuring range. It adopts a high speed DSP processor for data processing which gives high accuracy in measurement and computation speed. Its aluminium mold design has the ability to resist electromagnetic interference. It offers 2 way charging either by special charger or USB port.
Key Features
- Can test plane surface, Cylindrical surface and conical surface with diameter ≥0.78 in (20 mm), groove ≥3.14 in × 1.18 in (80 mm × 30 mm)
- Users can choose four parameters: Ra, Rz, Rt and Rq.
- Calibration sample piece use optical glass substrate
- Supports calibration function and simple operation
- Widely used for test metal and nonmetal processing surface
- Adopting high speed DSP processor to get fast reaction
- Can choose sampling length 0.25, 0.80, 2.50
- Dot Matrix LED display, high brightness, no perspective, wide temperature
- Auto power off and low power consumption design
- Two ways charging: Special Charger or USB port
- Sensor probe with protective door
- Using aluminum mold design, good ability to resist electromagnetic interference
Technical Specifications
| Test parameter | Ra, Rz, Rq, Rt |
| Test range | Ra, Rq: 0.05 μm ~ 10.0 μm Rz,  Rt: 0.1 μm ~ 50μm |
| Sampling length | 0.0098 in (0.25 mm), 0.0314 in (0.80 mm), 0.098 in (2.50 mm) |
| Evaluation length | 0.049 in (1.25 mm), 0.157 in (4.0 mm), 0.19 in (5.0 mm) |
| Stroke length | 0.236 in (6 mm) |
| Indicating accuracy | 0.01 |
| Indication error | ± (7-10) % |
| Variability of indication | <12 % |
| Transducer contacting pin round diameter and angle |
Pin Tip arc radius：10 μm (±1 μm) |
| Transducer contacting pin static load and  change rate | Static load≤ 0.016 N
Change rate ：≤ 800 N/m |
| Transducer Guide head pressure | ≤ 0.5 N |
| Temperature | -4 °F ~ 104 °F (-20 °C ~ 40°C) |
|
Relative humidity |
<90 % No vibration, no corrosive medium around |
| Battery | 3.7 V lithium ion battery |
| Overall size | 4.17 in × 2.75 in × 0.94 in (106 mm × 70 mm × 24 mm) |
| Weight | 0.44 lbs (200 g) |
Additional Information
Accessories
| GAOTek Surface Roughness Tester with Sampling Len (2 Way Charging) | 1Â PC |
| Scribed line calibration sample piece | 1 PC |
| Holder | 1Â PC |
| Charger | 1Â PC |
| Data line | 1 PC |
| Instruction book | 1 PC |
| Certificate of quality | 1 PC |