Defender® 6000 Washdown Scale

Overview

The Defender® 6000 Washdown Scale is a high-integrity industrial floor scale engineered for rigorous hygienic environments where moisture resistance, chemical exposure, and frequent high-pressure cleaning are operational norms. Designed according to the principles of sanitary process instrumentation, it employs a fully sealed, welded 316 stainless steel load cell architecture compliant with both IP68 (submersion up to 1.5 m for 30 min) and IP69K (high-temperature, high-pressure jet cleaning per DIN 40050-9 and ISO 20653 standards). This dual-certified ingress protection ensures uninterrupted performance in wet processing zones typical of food manufacturing, pharmaceutical bulk handling, and fine chemical blending lines. Its structural integrity, NSF/ANSI Standard 173 certification for food equipment, and alignment with HACCP prerequisite programs make it suitable for use in facilities operating under FDA 21 CFR Part 11–aligned quality systems and ISO 22000–certified food safety management frameworks.

Key Features

• Hygienic construction: 316 stainless steel indicator housing, U-shaped support frame, weighing pan, column (except 300 kg and 600 kg variants), and fully welded IP69K-rated load cell
• 6-digit, 20 mm-high white LED display with backlight-independent visibility under ambient lighting conditions
• Triple-color LED matrix (8×16 pixels) for dynamic checkweighing feedback—green/yellow/red status indication synchronized with user-defined tolerance bands
• 150% overload protection with mechanical and electronic safeguards; automatic tare initialization and auto-zero tracking
• Configurable environmental filtering to suppress signal noise caused by vibration, air currents, or electromagnetic interference in production-floor settings
• Front-panel key lockout and menu lockdown to prevent unauthorized parameter changes during shift handovers or unattended operation
• Stability indicator, underload/overload alerts, auto-power-off scheduling, and adjustable print-on-stable-trigger logic

Sample Compatibility & Compliance

The Defender 6000 Washdown accommodates diverse container types—including stainless steel bins, polypropylene totes, and nested trays—without compromising repeatability or linearity. Its low-profile, non-penetrating mounting design minimizes debris trapping points, supporting Clean-in-Place (CIP) protocols without disassembly. The scale meets NSF/ANSI 173 Section 5.2 for food equipment materials and surface finish requirements (Ra ≤ 0.8 µm on all product-contact surfaces). It supports GLP/GMP data integrity needs via real-time clock stamping, operator ID logging (when integrated with external authentication systems), and audit-trail-capable firmware. While not intrinsically rated for hazardous locations, its enclosure complies with UL 508A industrial control panel requirements when installed within certified enclosures.

Software & Data Management

• Standard RS232 and USB Host interfaces enable direct connection to label printers, PLCs, or MES terminals without middleware
• Optional communication modules include dual RS232, RS485 (Modbus RTU), Ethernet (TCP/IP), Wi-Fi 802.11n, Bluetooth 5.0, analog 4–20 mA output, and configurable 2-in/4-out digital I/O for integration into SCADA or batch control systems
• User-definable print templates support barcode generation (Code 128, UPC-A), multi-field headers, and compliance-driven footers (e.g., “Calibrated per ASTM E4” or “Verified per SOP-QC-017”)
• Firmware supports time-stamped event logging (power cycles, calibration events, mode changes) with exportable CSV reports compatible with LIMS and QMS platforms

Applications

This scale serves as a primary verification tool across regulated production workflows: raw material receipt inspection in dairy ingredient receiving bays; in-line checkweighing of preformed pouches prior to metal detection in snack food packaging lines; dynamic filling control for liquid dispensing stations in contract pharmaceutical manufacturing; and inventory reconciliation during cold-chain pallet staging in frozen food distribution centers. Its robustness enables continuous operation in washdown zones adjacent to slicers, mixers, and fillers—environments where conventional scales fail due to condensation ingress or caustic residue accumulation.

FAQ

Is the Defender 6000 Washdown certified for use in USDA-inspected meat and poultry facilities?
Yes—its NSF/ANSI 173 listing covers compliance with USDA-FSIS Directive 7120.1 requirements for equipment used in federally inspected establishments.
Can the scale maintain accuracy after repeated IP69K cleaning cycles?
Yes—the welded 316 SS load cell and hermetically sealed indicator housing are validated for ≥10,000 high-pressure cleaning cycles at 80–100 °C and 100–150 bar per ISO 20653 Annex C test protocols.
Does the firmware support 21 CFR Part 11-compliant electronic signatures?
The base firmware provides audit trail generation and time-stamped event logs; full Part 11 compliance requires integration with validated third-party software platforms that manage role-based access control and biometric/digital signature enforcement.
What is the recommended recalibration interval under GMP conditions?
Per OHAUS Technical Bulletin TB-012, initial verification should occur at installation, followed by daily operational checks and formal recalibration every 30 days—or per risk-based assessment aligned with ICH Q9 principles.
Are replacement load cells field-swappable without recalibration?
No—load cell replacement requires factory-level re-characterization and NIST-traceable recalibration; field service kits include only indicator boards and interface modules.