OHAUS Defender 5000 Series Heavy-Duty Platform Scale DF52P3000HRZH

Overview

The OHAUS Defender 5000 Series Heavy-Duty Platform Scale DF52P3000HRZH is an industrial-grade weighing solution engineered for precision, long-term structural integrity, and operational reliability in demanding production, logistics, and quality control environments. Built upon a robust dual-layer frame architecture with low-profile geometry (90 mm deck-to-floor height), this platform scale employs load cell-based force measurement principles compliant with international metrological standards. Its design centers on mechanical stability under dynamic and static loading conditions—critical for applications requiring consistent repeatability across high-cycle industrial use. The scale operates within the legal-for-trade framework defined by OIML R60 for load cells, supporting verification and calibration traceability to national metrology institutes.

Key Features

• Structural durability validated through 500,000 full-scale fatigue cycles per ASTM E4 or equivalent mechanical endurance protocols
• Reinforced deck constructed from 6 mm patterned steel plate or stainless steel sheet (8 mm for 5-ton variants), providing superior wear resistance and slip-resistant surface performance
• U-shaped subframe fabricated from 4 mm cold-rolled steel or stainless steel, press-formed for uniform stress distribution and torsional rigidity
• Four OIML R60-certified alloy steel load cells (IP67 ingress protection); stainless steel variant features hermetically welded IP68 sensors with laser-welded housings
• IP65-rated all-stainless-steel junction box with sealed cable entries and corrosion-resistant terminals
• Low-profile configuration (90 mm deck height) optimized for pallet jack and forklift compatibility without ramp dependency

Sample Compatibility & Compliance

The DF52P3000HRZH accommodates standard industrial payloads including palletized goods, bulk containers, raw material batches, and assembled components. Its rigid deck geometry ensures minimal deflection under off-center loading—validated per EN 45501 and OIML R76 requirements for non-automatic weighing instruments. The scale meets IP65 environmental protection for indoor industrial settings and IP67-rated sensor integration for humid or washdown-prone zones. All electrical interfaces comply with IEC 61000-4 electromagnetic compatibility standards. For regulated industries (e.g., food processing, pharmaceutical manufacturing), optional firmware configurations support audit-ready data logging aligned with FDA 21 CFR Part 11 requirements—including electronic signatures, user access levels, and immutable event logs.

Software & Data Management

• Standard RS232 interface supports ASCII-based serial communication with PCs, label printers, and PLCs at up to 115.2 kbps
• Optional communication modules include Bluetooth 5.0, dual RS232/RS485, USB-C host/device, and Ethernet (TCP/IP) for SCADA or MES integration
• Analog I/O options: configurable 4–20 mA or 0–10 VDC output for process control linkage; digital I/O (2-in / 4-out) enables direct actuation of conveyors, gates, or reject mechanisms
• Built-in application modes—static weighing, checkweighing, parts counting, percentage weighing, and dynamic hold—each programmable with user-defined tolerances and pass/fail logic
• Firmware supports multi-language UI (English, Spanish, French, German, Chinese) and customizable unit display (kg, lb, oz, g, etc.)

Applications

This platform scale serves critical functions across multiple sectors: incoming raw material verification in chemical and metal fabrication plants; outbound pallet weighing and dimensional compliance in third-party logistics (3PL) hubs; batch reconciliation in GMP-compliant food and beverage facilities; and in-process weight monitoring during assembly line operations. Its low-profile deck facilitates seamless integration into conveyor-fed inspection stations, while analog/digital I/O capability enables closed-loop feedback to programmable logic controllers (PLCs). In warehouse management systems (WMS), Ethernet or RS485 connectivity allows real-time weight data ingestion into inventory databases without manual transcription—reducing human error and supporting ISO 9001 documentation requirements.

FAQ

Is the DF52P3000HRZH certified for legal-for-trade use in the EU or USA?

Yes—when equipped with OIML R60-certified load cells and configured with approved firmware, it meets MID Class III (EU) and NTEP Class III (USA) requirements for non-automatic weighing instruments.
Can the scale interface directly with a Siemens S7 PLC?

Yes—via optional RS485 Modbus RTU or Ethernet TCP/IP module, enabling native register mapping and real-time weight streaming into TIA Portal.
What is the maximum recommended off-center load distance before accuracy degradation occurs?

Per EN 45501 Annex D testing, deviation remains within ±0.02% of capacity when load is applied within 30% of deck radius from center.
Does the stainless steel version support CIP/SIP cleaning protocols?

The IP68-rated sensors and IP65 junction box permit exposure to high-pressure water jets (up to 100 bar) and food-grade sanitizers; however, full CIP validation requires site-specific risk assessment per EHEDG guidelines.
Is firmware update capability available over network connection?

Yes—Ethernet-enabled units support secure HTTP(S)-based firmware uploads with SHA-256 signature verification and rollback protection.