OHAUS Defender 5000 Series DF52P1500HRLZH Heavy-Duty Platform Scale

Overview

The OHAUS Defender 5000 Series DF52P1500HRLZH is a high-capacity, industrial-grade platform scale engineered for precision, durability, and long-term operational stability in demanding production, logistics, and quality control environments. Built upon the proven Defender 5000 architecture, this model integrates OIML R60–certified load cell technology with a rigid dual-layer structural design to deliver consistent repeatability and linearity across its full 1500 kg capacity range. The scale operates on the principle of strain-gauge-based force transduction, where mechanical load is converted into proportional electrical signals via four high-stability alloy steel load cells—stainless steel variants utilize hermetically sealed, IP68-rated welded sensors for enhanced corrosion resistance. With a low-profile 90 mm deck-to-floor height and robust U-channel base fabricated from 4 mm cold-rolled steel or stainless steel, the DF52P1500HRLZH ensures ergonomic material handling while maintaining structural integrity under repeated full-scale loading cycles—validated through certified 500,000-cycle fatigue testing per OIML R76 requirements.

Key Features

• Dual-layer reinforced platform: 6 mm chequered steel or stainless steel top plate (8 mm for ≥5 t models), combined with a 4 mm U-shaped structural base formed by precision stamping and welding
• Four OIML R60 Class C3-certified alloy steel load cells (IP67-rated); stainless steel variant equipped with IP68 hermetically sealed, laser-welded sensors
• IP65-rated all-stainless steel junction box with integrated surge protection and moisture-resistant terminal blocks
• Low-clearance design: 90 mm overall height enables seamless integration with pallet jacks, conveyors, and automated guided vehicles (AGVs)
• Front-panel membrane keypad with backlit LCD display (128 × 64 pixels), supporting multi-language UI and intuitive menu navigation
• Comprehensive environmental resilience: operating temperature range –10 °C to +40 °C; relative humidity ≤90 % RH (non-condensing)

Sample Compatibility & Compliance

The DF52P1500HRLZH accommodates standard industrial payloads including palletized goods, drums, crates, and bulk containers—compatible with ISO 12952-2 compliant pallets (1200 × 1000 mm and 1200 × 800 mm footprints). Its mechanical and metrological design conforms to international regulatory frameworks including OIML R76-1 (Non-Automatic Weighing Instruments), EN 45501 (European harmonized standard for weighing instruments), and ANSI/NIST Handbook 44 (U.S. specifications for commercial weighing devices). For industries operating under regulated quality systems, the scale supports GLP/GMP-compliant data integrity when paired with optional audit-trail-enabled software solutions. While not inherently 21 CFR Part 11 compliant, its digital output interfaces facilitate traceable data capture when integrated with validated third-party LIMS or MES platforms.

Software & Data Management

The DF52P1500HRLZH features native RS232 serial communication as standard, enabling direct connection to PCs, label printers, or PLCs for real-time weight transmission using ASCII protocol. Optional interface modules expand connectivity to include RS485 (for daisy-chained multi-scale networks), Ethernet (TCP/IP), Bluetooth 5.0 (Class 1, up to 100 m line-of-sight), and USB virtual COM port emulation. Analog I/O options (4–20 mA / 0–10 VDC) and discrete digital I/O (2-in / 4-out) allow programmable control of external actuators—e.g., gate triggers, alarm relays, or conveyor start/stop logic—configurable via onboard setup menus. Firmware supports user-defined calibration protocols, zero-tracking thresholds, and auto-zero stabilization algorithms to mitigate thermal drift and vibration-induced noise.

Applications

This platform scale serves critical functions across multiple industrial verticals: inbound/outbound logistics verification in warehousing; batch weighing and formulation checks in chemical and food manufacturing; raw material receipt inspection in metal fabrication; and dynamic checkweighing in pharmaceutical packaging lines. Its rugged construction and IP65/IP67-rated components make it suitable for wet-process environments such as meat processing plants, beverage bottling facilities, and wastewater treatment operations. In agricultural cooperatives, it supports grain silo inventory reconciliation and livestock weight monitoring. When integrated with ERP or WMS systems via optional network interfaces, the DF52P1500HRLZH contributes directly to Industry 4.0 initiatives by feeding accurate, timestamped mass data into digital twin models and predictive maintenance workflows.

FAQ

What certifications does the DF52P1500HRLZH hold for legal-for-trade use?

It meets OIML R76-1 and EN 45501 requirements for non-automatic weighing instruments, with load cells certified to OIML R60 Class C3. Local type approval may be required depending on national metrology regulations.
Can the scale operate reliably in outdoor or washdown environments?

The stainless steel variant (with IP68 sensors and IP65 junction box) is rated for high-humidity and periodic washdown conditions, though prolonged submersion or exposure to caustic cleaning agents requires additional protective housing.
Is calibration traceable to NIST or other national standards?

Yes—when calibrated using OHAUS-certified test weights traceable to NIST, the instrument maintains metrological traceability per ISO/IEC 17025 guidelines.
Does the scale support integration with factory automation systems?

Absolutely—the RS485, Ethernet, and digital I/O options enable seamless interoperability with Siemens S7, Rockwell ControlLogix, and Beckhoff TwinCAT PLC ecosystems via Modbus RTU/TCP or custom ASCII command sets.
What is the recommended recalibration interval under continuous industrial use?

OHAUS recommends functional verification daily and full recalibration every 3–6 months, depending on usage frequency, environmental stressors, and internal QA policies aligned with ISO 9001 Clause 7.1.5.