OHAUS Defender 7000 Series Weighing Indicator

Overview

The OHAUS Defender 7000 Series Weighing Indicator is an industrial-grade, IP67-rated weighing terminal engineered for high-reliability integration into production, packaging, warehousing, and logistics environments. Built upon a robust embedded architecture, it functions as a central interface between load cells, process control systems, and enterprise-level data infrastructure. Its core measurement functionality adheres to international weighing standards—including OIML R76 and NTEP Class III—and supports dynamic and static weighing operations with traceable calibration protocols. Designed for regulatory-sensitive sectors such as pharmaceutical manufacturing and food processing, the indicator delivers deterministic response times, stable zero tracking, and real-time weight signal conditioning—ensuring consistent metrological performance under variable environmental loads, vibration, and electromagnetic interference.

Key Features

• 7-inch full-color capacitive touchscreen with intuitive graphical user interface (GUI), supporting multi-touch gestures and context-sensitive navigation
• Four dedicated tactile function keys for rapid access to critical operations—tare, print, unit toggle, and mode selection—without screen interaction
• Four-tier hierarchical user management system (Administrator, Supervisor, Operator, Guest) with password protection and role-based permission assignment
• Audit trail capability compliant with ALCOA+ principles: all configuration changes, calibration events, tare actions, and user logins are timestamped, user-identified, and stored in non-volatile memory
• High-resolution display resolution of 200,000 divisions (d), with verification scale interval (e) of 6,000e per EN 45501 and OIML R76 requirements
• IP67-rated enclosure constructed from stainless steel front panel and reinforced polycarbonate housing—resistant to dust ingress, water immersion up to 1 m for 30 minutes, and industrial cleaning agents

Sample Compatibility & Compliance

The Defender 7000 indicator is compatible with analog load cells (mV/V output) and digital load cell interfaces (e.g., RS-485-based protocols such as HBM CANopen or proprietary OHAUS SmartCell). It supports both single-point and multi-point calibration procedures traceable to national metrology institutes. Regulatory compliance includes adherence to ISO/IEC 17025 for calibration laboratories, FDA 21 CFR Part 11 requirements for electronic records and signatures (when paired with validated software configurations), and GLP/GMP documentation workflows. The device meets CE marking requirements under the Measuring Instruments Directive (MID) Annex MI-001 for automatic weighing instruments and conforms to EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU.

Software & Data Management

The indicator supports flexible data export via built-in communication ports: RS-232 (for legacy printers), RS-485 (multi-drop industrial networks), USB Host (for flash drives and label printers), and 10/100 Mbps Ethernet (TCP/IP, Modbus TCP). Customizable print templates allow field-specific formatting—including batch ID, operator code, timestamp, gross/net/tare values, and pass/fail status flags—for thermal or impact printers. Through optional OHAUS DataBridge™ software (Windows-based), users can configure remote monitoring, scheduled data logging, CSV/Excel export, and integration with MES or ERP platforms via OPC UA or RESTful API adapters. All audit logs are exportable in .csv format with SHA-256 hash integrity verification.

Applications

• Pharmaceutical tablet/capsule counting and checkweighing in cleanroom environments (ISO 14644-1 Class 7–8)
• Food ingredient batching and recipe validation under HACCP and BRCGS Food Safety Standard v9
• Automated packaging line weight verification with reject logic interfacing to pneumatic diverters
• Warehouse receiving and dispatch verification with barcode-linked item identification
• In-process quality control for metal, plastic, or composite component assembly lines
• Inventory reconciliation in cold-chain logistics where condensation resistance is critical

FAQ

Does the Defender 7000 support FDA 21 CFR Part 11 compliance?
Yes—when deployed with validated configuration settings, electronic signature workflows, and audit-trail-enabled firmware (v3.2 or later), the device supports Part 11 requirements for closed systems.
Can the indicator be integrated with Siemens S7 PLCs?
Yes—it supports Modbus RTU over RS-485 and Modbus TCP over Ethernet, enabling native integration with Siemens SIMATIC S7-1200/1500 controllers without protocol gateways.
Is the touchscreen operable with gloved hands?
Yes—the capacitive screen is calibrated for operation with standard nitrile or latex gloves, and the tactile keys provide mechanical fallback for high-noise or wet-hand scenarios.
What calibration standards does the indicator reference?
It supports internal calibration using certified test weights traceable to NIST, PTB, or CNAS-accredited providers; external calibration follows ISO 9001 and ISO/IEC 17025 procedures.
How is firmware updated in a validated environment?
Firmware updates are performed via USB drive using digitally signed .bin files; version history, checksums, and update timestamps are recorded in the audit log.