OHAUS Defender 2000 Series Platform Scale
| Brand | OHAUS |
|---|---|
| Model | D24PE30FRZH |
| Capacity | 30 kg |
| Readability | 1 g |
| Construction | Polished 430 Stainless Steel Pan, Powder-Coated Carbon Steel Base |
| IP Rating | IP65 (Sensor Housing) |
| Power Supply | AC Adapter (100–240 VAC) + Rechargeable Sealed Lead-Acid Battery |
| Display | Red LED, 25 mm High Digits |
| Operating Temperature | 10–40 °C |
| Relative Humidity | ≤80 % RH (non-condensing) |
| Compliance | CE, RoHS, ISO 9001 Certified Manufacturing |
Overview
The OHAUS Defender 2000 Series Platform Scale is an industrial-grade weighing instrument engineered for precision, durability, and operational flexibility in demanding commercial and light industrial environments. Built upon a robust mechanical architecture grounded in load cell transduction principles, the scale delivers high reproducibility across repeated static load measurements—ideal for warehouse receiving, production line checkweighing, packaging verification, and inventory management tasks. Its core sensing element—a hermetically sealed aluminum alloy load cell rated to IP65—ensures long-term stability against dust ingress and incidental liquid exposure, while the polished 430 stainless steel weighing pan resists corrosion, abrasion, and chemical residue accumulation common in food processing, pharmaceutical logistics, and manufacturing settings. Designed for continuous duty cycles, the Defender 2000 operates reliably under ambient conditions ranging from 10 °C to 40 °C with relative humidity up to 80 % non-condensing, meeting the environmental resilience expectations of ISO/IEC 17025-aligned laboratories and GLP-compliant operational workflows.
Key Features
- Industrial-strength construction: 430 stainless steel weighing pan combined with powder-coated carbon steel base frame for impact resistance and structural rigidity
- IP65-rated aluminum load cell housing—certified for protection against dust and low-pressure water jets per IEC 60529
- High-visibility red LED display with 25 mm digit height; optimized for readability under low-illumination or high-glare conditions typical in factory floors and cold storage facilities
- Dual-power operation: integrated AC adapter (100–240 VAC, 50/60 Hz) and rechargeable sealed lead-acid battery supporting up to 120 hours of continuous use on full charge
- Auto-zero tracking and automatic internal calibration compensation for thermal drift and mechanical hysteresis
- RS232 interface standard; optional USB-to-serial adapter available for direct data transfer to LIMS or ERP systems
Sample Compatibility & Compliance
The Defender 2000 accommodates diverse sample forms—including palletized goods, bulk containers, tote bins, and nested packaging—within its 30 kg capacity and 240 × 240 mm platform dimensions. Its overload protection (150 % of rated capacity) and shock-resistant mounting design mitigate risk of sensor damage during dynamic loading. The scale complies with international metrological requirements for Class III non-automatic weighing instruments per OIML R76-1:2020 and EU Directive 2014/31/EU. Manufacturing adheres to ISO 9001:2015 quality management standards. While not certified for legal-for-trade use in all jurisdictions without local verification, it meets foundational accuracy and repeatability criteria referenced in ASTM E142 and ISO 17025 Annex A.3 for in-house process control applications where traceable calibration is maintained via documented procedures.
Software & Data Management
Data output is supported via ASCII protocol over RS232 at configurable baud rates (9600–115200). The scale supports standard weight transmission modes including auto-print, auto-send on stabilization, and manual trigger. When integrated into regulated environments, users may implement external audit-trail logging through compatible third-party software compliant with FDA 21 CFR Part 11 requirements—provided digital signatures, user access controls, and immutable record retention are externally enforced. OHAUS provides free downloadable configuration utilities (e.g., OHAUS Scale Setup Tool) for baud rate, unit selection (g, kg, lb, oz), and display contrast adjustment—no proprietary firmware updates required for routine parameter changes.
Applications
- Warehouse inbound/outbound verification: rapid weighing of cartons, drums, and mixed SKUs prior to shipment or receipt
- Manufacturing line checkweighing: real-time verification of filled packages against target weight tolerances
- Food service portion control: consistent ingredient dispensing in central kitchens and commissary operations
- Recycling and scrap metal sorting: gross/net/tare weighing of material batches before processing
- Educational labs and vocational training: hands-on instruction in mass measurement fundamentals, uncertainty estimation, and calibration documentation
FAQ
Is the Defender 2000 suitable for wet or washdown environments?
The IP65 rating applies only to the load cell housing—not the entire scale assembly. While splash resistance is provided, full washdown or submersion is not recommended.
Does this model support internal calibration weights?
No—calibration requires external certified test weights traceable to NIST or equivalent national metrology institutes.
Can the RS232 interface connect directly to a Windows PC without additional hardware?
A USB-to-RS232 converter (e.g., FTDI-based) is required for modern PCs lacking native DB9 ports.
What is the battery life under typical intermittent usage?
With average use (10–15 weighments/hour), the sealed lead-acid battery sustains operation for approximately 4–6 weeks between charges.
Is firmware upgrade capability available for future feature enhancements?
Firmware updates are limited to critical safety or regulatory compliance patches; no user-accessible feature expansion roadmap is published by OHAUS for this series.
