100nm Confocal Displacement Sensor with 8mm Reference

Product Overview

POMEAS SFS-D4008L is a high-precision spectral confocal displacement sensor with an 8 mm reference distance, ±2 mm measuring range, 100 nm repeatability and <±1.2 μm linearity error. Compared with the 4.7 mm D4005, the 8 mm reference distance gives more fixturing clearance; the Φ8×73.1 mm probe weighs about 59 g. The non-contact optical method handles highly reflective, transparent and soft surfaces.

Key Features

• 100 nm repeatability, linearity error <±1.2 μm
• ±2 mm measuring range, 4 mm total travel
• 8 mm reference distance for ample fixturing clearance
• Φ8×73.1 mm probe, about 59 g
• Φ20 μm spot, ±12.5° measuring angle
• Minimum measurable thickness 10% F.S., supports transparent materials
• Temperature drift <0.03% F.S./°C, IP40

Technical Specifications

Applications

Ideal for precision part displacement and height measurement, transparent material thickness measurement, warpage and step inspection and surface contour scanning where working distance matters.

FAQ

How does the SFS-D4008L differ from the SFS-D4005?

Probe size, precision and range are identical; the difference is reference distance: 8 mm for the D4008L vs 4.7 mm for the D4005. A longer distance gives more fixturing clearance.

What is the repeatability?

Repeatability is 100 nm with a linearity error of <±1.2 μm (verified with a nanometer-grade laser interferometer).

What is the measuring range?

±2 mm measuring range (4 mm total travel), with a ±12.5° measuring angle.

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