Scratch hardness tester Model 249 Smart

benchtopfor plasticsfor samples

Overview
The ERICHSEN LINEARTESTER Model 249 Smart is a compact table-top multi-function tester for evaluating scratch/scribe, abrasion, crocking and solvent/wipe resistance of coatings and sheet metal surfaces. It combines an electromotive drive with a capacitive touch LCD and programmable test motions to meet standard test methods.

Key features

• Multi-function: scribe/scratch tests, reciprocal (to-and-fro) abrasion cycles, crockmeter tests and MEK/wipe tests.
• Electromotive drive ensuring uniform slide motion; automatic lowering/lifting of test tool for scratch tests.
• Capacitive LCD touch-screen for intuitive operation and parameter input.
• Electrical scribe detection for reliable testing of insulating coatings on conductive substrates.
• Ruler embedded in the slide plate to maintain constant distances between scribing marks.
• Adjustable test speeds and stroke lengths to match test method requirements.
• Wide compatibility with test tools; tungsten carbide tools feature a distinctive coating for visual wear detection. Optional universal adapter set for user-specific tool inserts.

Scope of delivery

• Scratch Hardness Tester ERICHSEN LINEARTESTER 249 Smart with electric motor drive (single stroke 50–110 mm; double stroke 35–150 mm) — without test tool.
• Load weight 20 N.
• Operating instructions.

Standards

• ISO 1518

Technical specifications

• Drive: Electric
• Test speed: Single stroke (10 - 100) mm/s; double stroke (10 - 400) mm/s — infinitely adjustable
• Test length (single stroke): 50 - 110 mm
• Stroke length (double stroke): 35 - 150 mm, variably adjustable
• Testing force: 0.5 N - 20 N (accessory required for 1 N - 40 N)
• Scratch profiles: Van Laar, Bosch, ISO, Clemen, etc.
• Specimen dimensions (max): 210 x 210 mm
• Portable / Stationary: Stationary (table-top)
• Dimensions (L x W x H): approx. 550 x 380 x 325 mm
• 4-way height-adjustable load arm (standard height approx. 10 mm; additional 20 / 40 / 60 mm positions) — sample clamping piece set required (Order No. 21010332)

Applications

• Quality control and R&D for coatings, paint shops, metal finishing and sheet metal production; suitable for laboratory and production-line spot testing.