OHAUS Defender 3000 i-D33XW Waterproof Platform Scale

Overview

The OHAUS Defender 3000 i-D33XW is an industrial-grade waterproof platform scale engineered for reliability and operational continuity in demanding production, packaging, food processing, and pharmaceutical manufacturing environments. Built upon a robust mechanical architecture grounded in Couette-type load cell technology and precision strain gauge transduction, the scale delivers high reproducibility across repeated cycles under variable thermal and humidity conditions. Its core design philosophy centers on durability without compromise: every structural component—including indicator housing, pan, frame, and internal load cell—is fabricated from ASTM A240 Type 304 stainless steel, ensuring corrosion resistance against water, cleaning agents (e.g., sodium hypochlorite, quaternary ammonium compounds), and organic residues. The indicator achieves IP66 ingress protection—fully dust-tight and resistant to powerful water jets—while the sealed stainless-steel load cell meets IP67 specifications, permitting temporary submersion during rigorous sanitation protocols.

Key Features

• Full 304 stainless steel construction across all exposed and structural components, including pan, base frame, indicator enclosure, and load cell housing.
• IP66-rated indicator with tri-color backlight LCD (45 mm digit height) enabling unambiguous real-time visual feedback in checkweighing applications—green for in-tolerance, yellow for near-limit, red for out-of-spec.
• Dual-power architecture: integrated rechargeable lead-acid battery (up to 120 hours typical runtime) plus universal AC input (110–240 VAC, 50/60 Hz), supporting uninterrupted operation during line changeovers or power fluctuations.
• Four primary weighing modes: standard gross/net weighing, parts counting (with automatic average piece weight calculation), dynamic checkweighing with configurable upper/lower limits, and accumulation for batch totalization.
• Tactile membrane keypad with optimized actuation force and haptic response, designed for gloved operation in wet or oily conditions.
• Modular connectivity: RS232 serial interface standard for legacy printer and PLC integration; optional USB host/device or 10/100BASE-T Ethernet modules support modern MES/SCADA data capture and remote configuration via TCP/IP.

Sample Compatibility & Compliance

The i-D33XW is validated for use with non-hazardous solid and semi-solid materials across temperature ranges of –10 °C to +40 °C and relative humidity up to 90 % non-condensing. Its stainless-steel pan surface (smooth finish, Ra ≤ 0.8 µm) complies with hygienic design principles outlined in EHEDG Doc. Type A and ISO 14159. While not intrinsically safe, the scale is suitable for Zone 22 (dust) environments when installed per IEC 60079-14 guidelines. It supports GLP/GMP documentation workflows through audit-trail-capable firmware (when paired with OHAUS SmartLink software), and its calibration traceability aligns with ISO/IEC 17025 requirements when performed using NIST-traceable weights.

Software & Data Management

OHAUS SmartLink software (Windows/macOS compatible) enables full configuration, real-time data streaming, and automated report generation. Each measurement event—including timestamp, operator ID (via optional RFID reader), mode used, and pass/fail status in checkweighing—is logged with SHA-256 integrity hashing. When deployed with Ethernet option, the scale supports Modbus TCP and HTTP RESTful API endpoints for direct integration into SAP EWM, Rockwell FactoryTalk, or Siemens SIMATIC systems. All firmware updates are digitally signed and verified prior to installation, satisfying FDA 21 CFR Part 11 electronic record and signature requirements for regulated industries.

Applications

• Food & beverage: In-line checkweighing of packaged goods (e.g., frozen entrées, dairy tubs, snack bags) prior to case packing; portion control verification in ready-to-eat meal assembly.
• Pharmaceutical manufacturing: Batch ingredient reconciliation, container tare verification, and final product weight validation in non-sterile oral solid dosage areas.
• Chemical blending: Accurate dispensing of raw materials into mixing vessels where solvent exposure or caustic rinse cycles occur regularly.
• Logistics & distribution: Pallet-level accumulation and dimensional weight estimation at shipping docks with frequent hose-down cleaning schedules.
• Agricultural processing: Grading and sorting of produce, nuts, or grains in humid post-harvest facilities subject to daily sanitization.

FAQ

What is the maximum permissible error (MPE) for this scale under OIML R76 Class III specifications?
The i-D33XW is certified to OIML R76-1:2021 Class III for general industrial use; MPE is ±0.5e for 0–50% of capacity and ±1.0e for 50–100%, where “e” denotes verification scale interval.
Can the scale be calibrated internally without external weights?
No—this model requires external calibration using certified test weights; it does not feature internal motorized or electromagnetic auto-calibration mechanisms.
Is the battery replaceable by the end user?
Yes—the sealed lead-acid battery is field-replaceable using standard Torx T10 tools; replacement part number is OHAUS 82101253.
Does the Ethernet option support DHCP and static IP assignment?
Yes—both IPv4 configuration methods are supported, along with DNS, NTP, and SNMP v2c/v3 for network monitoring.
Are firmware updates backward-compatible with older SmartLink versions?
Firmware v3.2+ requires SmartLink v2.5 or later; release notes detail deprecated features and migration paths for legacy configurations.