OHAUS R2000 Portable Precision Counting and Weighing Scale

Overview

The OHAUS R2000 is a portable, high-performance counting and weighing scale engineered for industrial environments where mobility, reliability, and rapid decision-making are critical. Built on a robust electromechanical load cell platform with digital signal processing, the R2000 delivers stable, repeatable measurements across dynamic production floors, warehouse staging areas, and quality control checkpoints. Its core functionality centers on precision mass determination and piece-counting—leveraging the relationship between average piece weight and total load to compute discrete item counts with statistical confidence. Unlike general-purpose bench scales, the R2000 integrates application-specific firmware logic for checkweighing, percent weighing, accumulation, and dynamic averaging—enabling real-time compliance verification against preset upper/lower limits without external software.

Key Features

• Seven preprogrammed weighing modes: Standard Weighing, Checkweighing, Percent Weighing, Piece Counting, Accumulation, Totalization, and Dynamic Weighing—each optimized for workflow efficiency in manufacturing, logistics, and assembly line QA.
• Large-format red LED display with 20-mm digit height ensures legibility under ambient lighting conditions ranging from dim storage rooms to high-intensity factory lighting.
• Tri-color visual feedback system (red/yellow/green LEDs) combined with an integrated audible buzzer provides immediate pass/fail status during checkweighing operations—reducing operator interpretation error and supporting lean manufacturing protocols.
• Extended battery runtime of up to 110 hours on a single charge (rechargeable sealed lead-acid battery), enabling uninterrupted use across multiple shifts without tethering to mains power.
• Ergonomic carry handle, front-mounted spirit level, adjustable leveling feet, and menu lock function enhance operational consistency and prevent inadvertent configuration changes in shared-use environments.
• Configurable digital filtering (low/medium/high) mitigates vibration-induced noise from nearby machinery, preserving measurement stability in non-isolated industrial settings.
• Auto-tare, auto-zero tracking, auto-power-off, and battery-level indication streamline daily operation while minimizing manual intervention.

Sample Compatibility & Compliance

The R2000 accommodates a broad range of industrial samples—from small electronic components and pharmaceutical blister packs to automotive fasteners and food packaging units—within its 300 × 225 mm stainless-steel-laminated plastic pan. All models comply with international metrological standards including OIML R76 (Non-Automatic Weighing Instruments), ASTM E1153 (Standard Specification for Digital Counting Scales), and NIST Handbook 44 (Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices). Each unit is certified to OIML F2 or ASTM Class 4 accuracy class, ensuring traceable performance suitable for in-process verification and documentation under ISO 9001, IATF 16949, and FDA-regulated environments where GLP/GMP-aligned recordkeeping is required.

Software & Data Management

Data export is facilitated via standard RS232 serial interface, compatible with legacy industrial PCs, PLCs, and label printers. The R2000 supports ASCII-based output protocols with configurable baud rates (1200–9600 bps), parity, and stop bits—enabling seamless integration into MES and ERP systems without proprietary drivers. While the scale operates autonomously without host software, its output format is structured for direct ingestion into spreadsheet applications or custom database logging tools. For regulated environments, users may implement external timestamped data capture solutions compliant with 21 CFR Part 11 requirements—including audit trails, electronic signatures, and data integrity safeguards—when paired with validated third-party middleware.

Applications

• Production line checkweighing of packaged goods to verify fill weight against regulatory or customer specifications (e.g., food, cosmetics, medical devices).
• Inventory management through high-speed piece counting of uniform parts—especially where batch reconciliation or kitting accuracy is mission-critical.
• In-process quality assurance during assembly, where component count validation prevents downstream defects and reduces scrap rates.
• Logistics and distribution centers performing pallet-load verification, parcel sorting, and shipping manifest reconciliation.
• Laboratory support functions requiring portable, battery-powered mass verification outside fixed analytical workstations—such as field calibration checks or equipment relocation audits.

FAQ

What calibration standards apply to the R2000 series?
The R2000 complies with OIML R76 and ASTM E1153. Factory calibration is performed using traceable weights certified to ISO/IEC 17025-accredited laboratories, and user calibration is supported with external Class F2 or ASTM Class 4 test weights.
Is the R2000 suitable for wet or dusty environments?
Yes—the housing meets IP54 ingress protection rating, providing resistance to dust ingress and water splashes from any direction, making it appropriate for most non-submerged industrial settings.
Can the R2000 be integrated into automated data collection systems?
Yes—its RS232 interface supports standard ASCII output with programmable delimiters and carriage-return formatting, enabling compatibility with SCADA, PLCs, and custom data acquisition platforms.
How does the tri-color checkweighing indicator function?
The red/yellow/green LEDs activate based on user-defined upper and lower tolerance bands relative to target weight; green indicates within spec, yellow signals near-limit condition, and red triggers immediate alert with optional buzzer activation.
What maintenance is required for long-term accuracy?
Routine verification with calibrated test weights is recommended before each shift in high-precision applications; full recalibration should follow manufacturer-specified intervals or after mechanical shock, temperature extremes, or relocation.