KEYENCE LT-9031M — Laser Displacement Sensor (LT-9000 Series)

KEYENCE · LT-9000 Series · Laser Displacement Sensor · In stock

The KEYENCE LT-9031M is a high-precision laser displacement sensor from the LT-9000 series, engineered for non-contact measurement of position, thickness, vibration, and run-out on the factory floor. As part of the KEYENCE measurement family, it pairs a visible laser emitter with a high-speed CMOS receiver, delivering stable analog and discrete outputs for quality inspection cells. The "M" suffix typically denotes the analog output configuration, making the LT-9031M a strong fit for OEM inspection machine builders and R&D labs that demand repeatable micron-level feedback. KOEED stocks the LT-9031M alongside complementary laser sensors and displacement amplifiers in the displacement sensor category, ready for worldwide shipping with a 24-hour quote turnaround.

Key Specifications

Datasheet Highlights

• Laser triangulation principle — visible red semiconductor laser mapped onto a high-speed CMOS receiver; sub-pixel shifts translate into micron-level distance changes. Same principle as SICK OD, Micro-Epsilon optoNCDT and Panasonic HL-C.
• High-precision analog output (M-suffix) — analog output plus discrete judgment signal, allowing direct tie-in to PLC analog modules (1756-IF8H, SM 1231, Q68AD) for closed-loop height, thickness or position control.
• High-speed CMOS receiver — selectable response window for high-speed production lines (semiconductor pick-and-place, HDD head inspection, PCB solder paste deposition) where micro-vibration must be rejected without losing signal fidelity.
• Compatible with KEYENCE amplifier / display units — drop-in replacement on existing Japanese OEM inspection-machine test rigs.
• Industrial-grade robustness — metal housing, IP-rated front face, wide operating temperature window designed for inline factory deployment.

For full optical, electrical and environmental ratings, download the official KEYENCE LT-9031M datasheet or request a copy by emailing Moritta@KOEED.COM.

Typical Applications

• Semiconductor & electronics manufacturing — wafer thickness, die height and BGA / QFP coplanarity inspection on pick-and-place and die-bonder lines.
• HDD head / slider inspection — sub-micron runout and flying-height style measurements where the LT-9031M's CMOS receiver bandwidth is a real engineering asset.
• PCB solder paste deposition (SMT) — pre-reflow and post-reflow height profiling when integrated with a stencil printer or AOI station.
• Automotive component inspection — brake disc runout, piston head height, ABS sensor gap, and connector pin height in OEM tier-1 cells.
• Precision machining & bearing quality — shaft diameter, eccentricity and roller bearing raceway profile, often paired with a sub-spindle indexer.
• R&D labs and university metrology benches — material expansion, vibration amplitude, MEMS device deflection where repeatable, non-contact readout is required.

Browse our measurement sensor selection guide for guidance on laser triangulation vs. confocal vs. eddy-current techniques, or jump straight to the laser sensor collection to see alternatives from SICK, Panasonic, Micro-Epsilon, Baumer and KEYENCE side by side.

Related Modules & Cross-Reference

Warranty & Authenticity

Every KEYENCE LT-9031M sold by KOEED is sourced through verified channels and inspected for cosmetic and functional condition before shipment. As an independent multi-brand distributor covering the nine major industrial automation brands (Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE), we focus on authentic parts, traceable supply, and a clear path to documentation — not on race-to-the-bottom price claims.

• Tested & inspected — visual check, electrical sanity and serial-number verification on every unit
• Worldwide shipping — DHL / FedEx / UPS from our Shenzhen + Hong Kong base, with typical dispatch within 1-3 business days after payment
• Quote within 24 hours — send your part list (single line or full BOM) and our team responds on the next business day
• Documentation support — datasheet, certificate of conformance and export paperwork available on request
• Bulk pricing for OEM inspection machine builders — repeat-order and frame-contract terms are available; ask our team for a project quote

Source category: Displacement sensors · KEYENCE sensors · Measurement sensor guide · Create a Quote