Length Measuring Instrument
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| Brand | Chotest |
|---|---|
| Origin | Guangdong, China |
| Model | SJ5100-Prec300 |
| Measurement Range | 0–340 mm |
| Resolution | 0.01 µm |
| Operating Environment | 20 ± 2 °C |
| Compliance | ISO/IEC 17025-aligned calibration infrastructure, compatible with JJG 30–2012 (China), DIN 861, and ASTM E1316 (indirect metrological traceability framework) |
| Brand | Chotest |
|---|---|
| Origin | Guangdong, China |
| Model | SJ5100-Prec300 |
| Measurement Range | 0–340 mm (external), 5–200 mm (internal, with reference ring gauge) |
| Accuracy | ≤ ±(0.2 + L/1000) µm (L in mm, external dimension) |
| Repeatability (internal) | ≤ 0.1 µm (standard probe), ≤ 0.2 µm (hook probe), ≤ 0.3 µm (internal measuring assembly) |
| Measuring Force | 0.05/0.1/0.3/0.5 N (sensor-based internal force) |
| Environmental Requirement | 20 ± 2 °C, temp. stability ≤ 0.5 °C/h |
| Base Material | Granite |
| Resolution | 0.01 µm |
| Weight | 150 kg |
| Dimensions | 1400 × 400 × 450 mm |
| Five-Axis Worktable (ST-30.1) | Z-axis 0–50 mm, Y-axis ±25 mm, X-axis floating ±10 mm, Z-rotation ±3°, Y-tilt ±3°, load capacity 50 kg, table size 350 × 25 mm |
| Brand | Mahr |
|---|---|
| Origin | Germany |
| Model | Digimar 817 CLM / 816 CL |
| Measurement Principle | Dual-Head Optical Encoder-Based Linear Displacement Metrology |
| Motion System | Air-Bearing Guided Motorized Carriage |
| Guide Rail Material | Stainless Steel |
| Positioning Repeatability | ≤ ±0.3 µm (typical, per ISO 230-2) |
| Temperature Compensation | Integrated Pt100 Sensor with Real-Time Linear Expansion Correction |
| Display | Backlit Graphic LCD with Icon-Based Menu Navigation |
| Data Interface | RS232 (Opto-Isolated), USB 2.0 |
| Power Supply | Rechargeable Li-ion Battery (≥8 h continuous operation) |
| Zero Setting | User-Defined Reference Point on Workpiece |
| Compliance | Designed to Support ISO/IEC 17025 Calibration Traceability Requirements |
| Software Upgrade Path | Field-Programmable Firmware via USB |
| Brand | Trimos |
|---|---|
| Origin | Switzerland |
| Model | ALESTA |
| Measurement Range | 0.1–1015 mm |
| Resolution | 1 µm |
| Operating Environment | 22 °C ± 0.5 °C |
| Measurement Principle | Precision Mechanical Interpolation with Linear Encoder-Based Displacement Sensing |
| Key | Brand: Trimos |
|---|---|
| Origin | Switzerland |
| Model | HS |
| Measurement Range | 0–3050 mm |
| Resolution | 0.1 µm |
| Accuracy | ±0.1 µm |
| Operating Environment | 20 °C ± 0.5 °C |
| Measurement Principle | Absolute Interferometric Length Metrology (Long-Range Linear Encoder-Based) |