In-house Made
Roughness TestersTJT Tester
Surface Roughness Tester
Model: TJ-SR200 · Brand SKU: TJT-SR-200
Contact surface roughness tester measuring Ra 0.025–12.5 μm with 0.08/0.25/0.75/4 mm sampling lengths, printing values and profile curves.
- Brand
- TJT Tester
- Model
- TJ-SR200
- Source
- In-house Made
- SKU
- TJT-SR-200
Learn more
Overview
The TJ-SR200 is a handheld contact profilometer for measuring roughness on machined, ground, polished, coated and welded surfaces, reporting Ra, Raq, Rz, Rt and Rq.
Supplied with the standard 0.25 μm stylus and a reference standard; calibrated before dispatch with a calibration certificate included.
Specifications
| Measuring range Ra | 0.025 – 12.5 μm |
|---|---|
| Sampling length | 0.08 / 0.25 / 0.75 / 4 mm |
| Parameters | Ra / Raq / Rz / Rt / Rq / Ry |
| Stylus | Standard 0.25 μm radius |
| Display | High-contrast LCD |
| Printer | Built-in thermal printer |
| Battery life | ≥ 30 hours |
Key Features
- Ra range 0.025–12.5 μm
- Four sampling lengths: 0.08 / 0.25 / 0.75 / 4 mm
- Ra / Raq / Rz / Rt / Rq output
- Reference standard calibration with certificate
- Built-in thermal printer
- USB data export
Applications
Machined surface roughness inspectionGround and polished surface evaluationCoating surface quality checksWeld bead roughness assessmentIncoming and in-process inspection
FAQ
Does the roughness tester need calibration with a reference standard?+
Yes. Before each use it is good practice to verify the indication against the supplied reference standards (one per roughness grade) to maintain traceability. Each instrument is calibrated at the factory and supplied with a certificate.