Drick DRK203A Mechanical Thickness Gauge for Plastic Films and Sheets

Overview

The Drick DRK203A Mechanical Thickness Gauge is a precision contact-based instrument engineered for the reliable, repeatable measurement of thickness in flexible planar materials—including plastic films, polymer sheets, paper, cardboard, metallic foils, silicon wafers, and thin metal strips. It operates on the fundamental principle of mechanical displacement sensing: a calibrated anvil and movable measuring probe apply controlled, standardized force to compress the specimen between two parallel surfaces, and the resulting axial displacement is translated into a digital thickness reading with 1-µm resolution. Unlike optical or ultrasonic methods, this mechanical approach eliminates refractive index dependency and surface reflectivity artifacts—making it especially suitable for opaque, matte, multilayered, or metallized substrates common in packaging and electronics manufacturing. The DRK203A is explicitly designed for flat, non-embossed specimens; it is not intended for textured, corrugated, or embossed films where localized deformation may compromise measurement fidelity.

Key Features

• High-resolution digital display with 0.001 mm (1 µm) resolution and automatic zero calibration
• Interchangeable probe configurations: flat 6-mm-diameter upper anvil (0.5–1.0 N force) or curved upper anvil with radius R15–R50 mm (0.1–0.5 N force), enabling optimized contact pressure for delicate or stiff materials
• Robust all-metal frame with precision-ground parallel anvils ensuring long-term geometric stability and minimal hysteresis
• Ergonomic lever-actuated loading mechanism that delivers consistent force without operator-dependent variability
• Compact benchtop footprint (220 × 150 × 180 mm) and lightweight construction (≈3.2 kg) for integration into QC labs, production lines, or portable field verification stations
• No external power requirement—operates mechanically with battery-free digital readout powered by integrated capacitive sensor circuitry

Sample Compatibility & Compliance

The DRK203A is validated for use with specimens up to 1 mm thick and ≥25 mm in width or diameter. It accommodates standard test specimens defined in GB/T 6672–2001 and ISO 4593:1993—including polyethylene (PE), polypropylene (PP), polyester (PET), polyamide (PA), aluminum foil, coated paperboard, and single-crystal silicon wafers (up to 300 µm). Its mechanical design excludes embossed, micro-structured, or highly elastic elastomeric films, as these violate the flat-surface assumption required for compliant contact measurement. All units are supplied with factory calibration certificate traceable to national metrological standards. The gauge supports GLP-compliant documentation when used with manual logbooks or integrated into LIMS via optional RS232 output (available upon request).

Software & Data Management

While the base DRK203A operates as a standalone mechanical-digital gauge without embedded software, it supports optional serial data output (RS232 interface) for real-time transmission of measurement values to external PCs or industrial SCADA systems. When paired with Drick’s optional DRK-DataLink v2.1 software (Windows-compatible), users can perform statistical process control (SPC) analysis—including mean, standard deviation, Cp/Cpk, and X-bar & R chart generation—directly from captured thickness datasets. Audit trails, user access logs, and electronic signatures comply with FDA 21 CFR Part 11 requirements when deployed in regulated environments under documented SOPs.

Applications

• Quality assurance of extruded plastic films during roll-to-roll production (e.g., food packaging laminates, medical pouches)
• Incoming inspection of paperboard substrates for folding carton manufacturing
• Thickness uniformity validation of anodized aluminum foil in capacitor-grade material supply chains
• R&D screening of spin-coated polymer films on silicon wafers prior to lithography
• Process capability studies for calendering and casting lines producing PETG, PC, or PVC sheets
• Conformance testing against ASTM D6988 (Standard Test Method for Determining Thickness of Solid Plastics Sheet and Plate) using appropriate probe configuration

FAQ

Is the DRK203A suitable for measuring embossed or textured films?
No. The instrument requires flat, non-deformable contact surfaces; embossing, creping, or surface patterning introduces uncontrolled compression variables and violates ISO 4593:1993 sampling assumptions.
What is the recommended calibration frequency?
Drick recommends initial calibration upon installation, followed by quarterly verification using certified gauge blocks (NIST-traceable, Class AA). Annual full recalibration is advised for GMP-regulated operations.
Can the DRK203A measure soft hydrogels or foam tapes?
Not reliably. Its fixed-force mechanical design is unsuited for highly compressible, viscoelastic materials. For such applications, a low-force pneumatic or motorized micrometer with programmable dwell time is recommended.
Does the device meet ISO/IEC 17025 requirements for accredited testing labs?
Yes—when operated within specified environmental conditions (23 ± 2 °C, 50 ± 10 % RH), with documented calibration records, trained personnel, and uncertainty budgets derived from repeatability studies per ISO/IEC 17025:2017 Clause 7.6.