OHAUS Defender 3000 i-D33P Industrial Platform Scale

Overview

The OHAUS Defender 3000 i-D33P is a robust, entry-level industrial platform scale engineered for precision and reliability in demanding dry-environment production, warehousing, logistics, and quality control operations. Built upon OHAUS’s long-standing expertise in weighing instrumentation, this scale employs electromagnetic force compensation (EMFC) technology in its load cell architecture—specifically, an IP65-rated aluminum alloy load cell calibrated to deliver high repeatability under variable mechanical stress. Its design philosophy centers on operational resilience: the i-D33P integrates structural rigidity with functional simplicity, supporting core metrological tasks—including gross/net weighing, piece counting, checkweighing, and batch accumulation—without requiring advanced configuration or external software dependencies. The scale meets fundamental requirements of ISO/IEC 17025-compliant laboratories and manufacturing sites operating under GLP or GMP-aligned workflows, where traceable, auditable, and repeatable mass measurement is essential.

Key Features

• Large 6-digit, 7-segment multicolor backlit LCD display (45 mm character height) optimized for visibility in ambient light up to 50,000 lux—enabling rapid visual verification in factory-floor environments.
• Three-color checkweighing feedback (red/yellow/green LED backlight) directly mapped to user-defined upper/lower tolerance bands—eliminating reliance on secondary indicators or manual interpretation.
• Stainless steel 304 weighing pan (corrosion-resistant, easy-clean surface) mounted on a rigid rectangular frame constructed from powder-coated carbon steel square tubing—designed to withstand repeated impact loading and forklift traffic.
• Dual-power architecture: integrated rechargeable sealed lead-acid battery (providing ≥12 hours continuous operation) plus universal AC input (110–240 VAC, 50/60 Hz), ensuring uninterrupted use during power fluctuations or mobile deployment.
• Modular mounting system featuring a die-cast aluminum U-bracket and adjustable leveling feet—compatible with benchtop, floor-standing, or conveyor-integrated installation configurations.
• Tactile membrane keypad with positive actuation feedback—engineered for longevity in dusty or humid (non-condensing) industrial atmospheres (rated IP65 for indicator enclosure).

Sample Compatibility & Compliance

The i-D33P accommodates heterogeneous load geometries typical of industrial unit handling—boxes, pallets, drums, and irregularly shaped components—with maximum capacity options spanning 30 kg to 300 kg (model-dependent). Its load cell and mechanical structure comply with OIML R76-1 (2006) Class III accuracy requirements for non-automatic weighing instruments used in commercial and industrial applications. The scale supports calibration verification per ASTM E74-22 (Standard Practices for Calibration of Force Measuring Instruments) and includes internal calibration routines traceable to NIST-certified standards. While not intrinsically rated for hazardous locations, its construction satisfies EN 61326-1:2013 (EMC immunity) and EN 61010-1:2010 (safety for electrical equipment), making it suitable for CE-marked deployment in EU-based production facilities.

Software & Data Management

The i-D33P operates autonomously without embedded OS or cloud dependency. Data output is protocol-driven and deterministic: RS232 serial communication (standard) transmits ASCII-formatted weight strings at configurable baud rates (up to 115,200 bps), compatible with legacy label printers, PLCs, and SCADA systems. Optional USB (HID or virtual COM port) and Ethernet (TCP/IP Modbus TCP or ASCII streaming) interfaces enable integration into MES or ERP ecosystems—supporting automated data logging, audit trail generation, and electronic record retention aligned with FDA 21 CFR Part 11 principles when paired with validated host software. No proprietary drivers are required; all interfaces adhere to open industrial communication standards.

Applications

• Production line checkweighing of packaged goods (e.g., pharmaceutical blister packs, food trays, automotive assemblies) against predefined weight tolerances.
• Inventory management via piece counting—leveraging automatic average-piece-weight (APW) calculation and dynamic count stability detection.
• Shipping and receiving verification—gross/net tare subtraction, accumulation across multiple items, and batch totalization for dispatch documentation.
• Raw material receipt inspection—compliance verification against supplier weight certifications prior to warehouse intake.
• Work-in-process (WIP) monitoring in lean manufacturing cells where real-time weight feedback informs operator decision-making and process control.

FAQ

What accuracy class does the i-D33P meet?

It conforms to OIML R76-1 Class III, with verification scale interval (e) defined per model variant—typically e = 1 g or 2 g for 30–60 kg capacities.
Is the scale suitable for wet or washdown environments?

No—the indicator housing is IP65 rated (dust-tight and protected against low-pressure water jets), but the load cell and base structure are not designed for direct chemical exposure or high-humidity condensation.
Can the checkweighing thresholds be customized per product?

Yes—users configure up to three independent tolerance sets (HI/OK/LO) via front-panel menu navigation, with password-protected access levels to prevent unauthorized modification.
Does the scale support external calibration weights?

Yes—it features internal calibration capability, but also accepts external Class M2 or better weights for periodic verification and adjustment in accordance with ISO 9001 internal audit requirements.
Is firmware upgrade supported in-field?

Firmware updates are performed via RS232 using OHAUS-provided utility software; no over-the-air or USB-based update mechanism is implemented.