OHAUS Defender 3000 i-D33XW Waterproof Platform Scale

Overview

The OHAUS Defender 3000 i-D33XW is an industrial-grade waterproof platform scale engineered for reliable, high-reproducibility mass measurement in demanding wet, washdown, or hygienic environments. Built upon OHAUS’ legacy of rugged weighing instrumentation, this scale employs a full 304 stainless steel mechanical architecture—including load cell housing, pan, frame, and indicator enclosure—to resist corrosion, chemical exposure, and mechanical impact. Its measurement principle relies on precision strain-gauge load cell technology compliant with international metrological standards (OIML R76-1, NTEP Class III), delivering stable readings under variable thermal and vibrational conditions typical of food processing, pharmaceutical manufacturing, and chemical production facilities. The integrated IP66-rated indicator and IP67-rated stainless steel load cell ensure operational integrity during routine high-pressure cleaning, steam sterilization cycles, or ambient humidity exceeding 95% RH.

Key Features

• Full 304 stainless steel construction across all structural and functional components—pan, frame, indicator housing, and load cell assembly—for long-term resistance to chlorides, organic acids, and caustic cleaning agents.
• Tri-color backlight LCD display (45 mm digit height) with intuitive visual feedback: green indicates target weight achieved, yellow signals tolerance band deviation, and red denotes under/overweight condition—enabling rapid operator decision-making without requiring numeric interpretation.
• Four preconfigured operational modes: standard weighing, parts counting (with automatic average piece weight calculation), checkweighing (with programmable upper/lower limits and audible alerts), and accumulation (for batch totalization across multiple weighments).
• Dual power architecture: simultaneously supports universal AC input (110–240 VAC, 50/60 Hz) and internal rechargeable sealed lead-acid battery—ensuring uninterrupted operation during facility power fluctuations or mobile deployment scenarios.
• Modular connectivity: standard RS232 interface enables direct integration with label printers, PLCs, or legacy industrial PCs; optional USB or Ethernet modules support modern MES/SCADA systems and comply with ISO/IEC 17025 data traceability requirements.
• Ergonomic mounting flexibility: includes adjustable stainless steel U-bracket with vibration-damping rubber inserts, allowing secure surface, wall, or pedestal installation without compromising structural rigidity or calibration stability.

Sample Compatibility & Compliance

The i-D33XW accommodates diverse industrial sample types—from bulk raw materials (e.g., granules, powders, liquids in containers) to packaged goods (bottles, pouches, trays)—with maximum capacities up to 30 kg (model-specific) and readability down to 1 g. Its sealed, non-porous surface geometry prevents microbial entrapment and meets hygiene design principles outlined in EHEDG Doc. 8 and FDA Food Code §3-304.12. The scale is certified for use in environments governed by GMP Annex 11 (electronic records), supports audit-trail-enabled data export (via optional software), and conforms to electromagnetic compatibility standards IEC 61326-1 and safety standard IEC 61010-1. Calibration verification procedures align with ASTM E898 and USP , facilitating routine performance qualification in regulated laboratories and production lines.

Software & Data Management

While the i-D33XW operates autonomously via front-panel controls, its RS232, USB, or Ethernet interfaces enable seamless bidirectional communication with OHAUS Acuity™ PC software or third-party LIMS/MES platforms. Data output follows ASCII protocol with configurable delimiters and timestamping, supporting GLP/GMP-compliant record retention. Optional firmware upgrades provide enhanced security features—including user-level access control, password-protected configuration changes, and electronic signature capability per FDA 21 CFR Part 11 Subpart B requirements. All data transmission paths are validated for integrity using CRC-16 error-checking algorithms.

Applications

• Food & beverage: ingredient batching, in-line checkweighing of filled packages, yield monitoring during thermal processing.
• Pharmaceuticals: raw material receipt inspection, dispensing verification, tablet/capsule count validation prior to blister packaging.
• Chemical manufacturing: catalyst dosing, solvent blending, drum filling control with tare compensation.
• Logistics & warehousing: pallet load verification, parcel sorting by weight class, returnable container reconciliation.
• Education & vocational training: hands-on instruction in metrology fundamentals, calibration methodology, and industrial hygiene compliance protocols.

FAQ

What environmental standards does the i-D33XW meet for washdown applications?

It complies with IP66 (indicator) and IP67 (load cell) ingress protection ratings per IEC 60529, and its surface finish satisfies 3-A Sanitary Standards for Equipment Used in the Production, Processing, and Handling of Dairy Products.
Can the scale be calibrated internally without external weights?

No—this model requires external calibration weights traceable to national standards (e.g., NIST SRM); however, it supports multi-point linear calibration and stores calibration coefficients in non-volatile memory.
Is the battery replaceable by the end user?

Yes—the sealed lead-acid battery is field-replaceable using standard Torx tools; replacement part number is available through OHAUS authorized service centers.
Does the RS232 interface support bi-directional command sets?

Yes—it accepts OHAUS ASCII command protocol for remote zeroing, tare, unit change, and mode selection, enabling full PLC-driven automation.
How often should routine verification be performed in a GMP environment?

Per EU GMP Annex 15, verification frequency must be risk-based; typical intervals range from pre-shift checks to weekly performance testing using certified test weights, documented in a controlled logbook or electronic system.