OHAUS Defender 3000 i-D33P Industrial Platform Scale

Overview

The OHAUS Defender 3000 i-D33P is an industrial-grade platform scale engineered for high-reliability performance in demanding production, packaging, warehousing, and logistics environments. Built upon OHAUS’s legacy of precision weighing instrumentation, the i-D33P implements a robust load cell architecture based on an IP65-rated aluminum sensing element, integrated with a rigid square-tube carbon steel frame and a corrosion-resistant 304 stainless steel weighing pan. Its measurement principle relies on electromagnetic force compensation and strain-gauge transduction—calibrated to OIML R76-1 Class III accuracy standards—ensuring consistent repeatability and linearity across its full 150 kg capacity range with 10 g readability. Designed for dry industrial settings, the system operates without environmental conditioning requirements while maintaining metrological integrity under vibration, thermal drift, and intermittent power conditions.

Key Features

• Tri-color backlit LCD display (45 mm digit height) enables rapid visual interpretation of checkweighing results—green for in-tolerance, yellow for near-limit, red for out-of-spec—reducing operator decision latency in high-throughput lines.
• Modular mechanical design: powder-coated square-tube steel base provides torsional rigidity; ABS engineering plastic indicator housing with integrated metal U-bracket supports wall, bench, or pole mounting configurations.
• Dual-power architecture: includes both universal-input AC adapter (110–240 VAC, 50/60 Hz) and sealed lead-acid rechargeable battery, enabling uninterrupted operation during facility-wide power fluctuations or mobile deployment.
• Tactile membrane-free keypad ensures long-term reliability in dusty or washdown-adjacent zones where membrane switches degrade over time.
• Four primary operational modes—Weighing, Counting, Checkweighing, and Accumulation—are accessible without menu navigation, minimizing training overhead for shift-based personnel.

Sample Compatibility & Compliance

The i-D33P accommodates diverse industrial sample forms—including palletized goods, bulk containers, assembled components, and serialized packages—within its 400 × 500 mm pan footprint. Its structural damping characteristics minimize settling time for dynamic loads, supporting stable readings within ≤1.5 seconds after placement. The scale complies with international regulatory frameworks applicable to non-automatic weighing instruments: certified to OIML R76-1 Class III for legal-for-trade applications in manufacturing and distribution; aligned with ANSI/NCSL Z540-1 for calibration traceability; and supports documentation protocols required under ISO/IEC 17025 for accredited laboratories performing in-house verification. While not rated for wet-process environments, its IP65 load cell and NEMA 4X-equivalent indicator housing provide protection against dust ingress and incidental splashing—suitable for controlled dry industrial spaces compliant with GMP Annex 11 data integrity expectations for basic weight recording.

Software & Data Management

Data output is managed through a standard RS232 serial interface, enabling direct integration with label printers (e.g., Zebra, Sato), PLCs, and legacy MES terminals using ASCII protocol. Optional USB or Ethernet modules support modern factory connectivity: USB facilitates direct export to spreadsheet applications via HID-compliant virtual COM port emulation; Ethernet variants implement TCP/IP socket communication for SCADA-level integration and remote configuration via web-based UI (firmware v3.2+). All interfaces support timestamped, uneditable data streams with configurable delimiter formatting (comma/tab/pipe), ensuring audit-ready records. Though the indicator does not feature embedded 21 CFR Part 11 compliance (e.g., electronic signatures), its deterministic data logging—paired with external validation of firmware and calibration certificates—meets GLP-aligned documentation practices for routine QC weight capture.

Applications

• Production line checkweighing of pre-packed consumer goods (e.g., pharmaceutical blister packs, food trays, automotive fasteners) to verify fill consistency against upper/lower tolerance bands.
• Inventory management: piece counting of uniform parts (bolts, connectors, PCBs) using user-defined unit weight calibration, with statistical count variance reporting.
• Shipping and receiving: gross/net/tare weight capture for freight documentation, pallet load verification, and dimensional weight reconciliation.
• Batch accumulation: real-time summation of sequential weighments for raw material dispensing, blending operations, or waste tracking logs.
• Work-in-progress staging: temporary weight verification at assembly stations prior to final inspection or packaging handoff.

FAQ

What is the maximum safe overload capacity of the i-D33P?

The scale is designed to withstand 150% of full-scale load (225 kg) without permanent deformation or calibration shift—per OIML R76-1 mechanical safety requirements.
Can the tri-color checkweighing thresholds be customized per application?

Yes—upper and lower limits, along with intermediate warning band, are fully programmable via front-panel navigation or remote configuration through RS232/Ethernet.
Is calibration traceable to national standards?

Factory calibration uses NIST-traceable weights; end-user recalibration may be performed using external Class F1 or better test masses, with certificate generation supported via optional PC software.
Does the battery support hot-swapping during operation?

No—the lead-acid battery requires shutdown for replacement; however, runtime exceeds 20 hours on a full charge, minimizing downtime in multi-shift facilities.
Are firmware updates available, and how are they deployed?

OHAUS releases validated firmware patches annually; updates are applied via USB drive or Ethernet using signed binary files to prevent unauthorized modification.