OHAUS Ranger7000 Precision Electronic Balance
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | Ranger7000 |
| Pricing | Available Upon Request |
Overview
The OHAUS Ranger7000 Precision Electronic Balance is an industrial-grade analytical and semi-micro weighing instrument engineered for high reproducibility, long-term stability, and operational robustness in demanding laboratory, quality control, and production environments. Utilizing electromagnetic force restoration (EMFR) technology, the Ranger7000 delivers real-time load compensation with minimal drift and exceptional linearity across its full capacity range. Its core architecture integrates a temperature-compensated load cell, hermetically sealed internal electronics, and a rigid die-cast aluminum base to mitigate mechanical hysteresis and environmental interference—critical attributes for GLP-compliant routine weighing, formulation verification, and sample preparation workflows.
Key Features
- High-resolution LCD display with backlighting and adjustable contrast for optimal readability under varied ambient lighting conditions
- Multiple preconfigured weighing modes including standard weighing, parts counting, percent weighing, checkweighing, density determination (with optional accessories), and animal/dynamic weighing
- Integrated RS232, USB Device, and optional Ethernet interfaces supporting bidirectional data transfer to LIMS, ERP, or Excel-based reporting systems
- Onboard memory capable of storing up to 1,000 user-defined weighing records with timestamp, operator ID, and net/gross/tare metadata
- Auto-calibration function with internal calibration mass (model-dependent); external calibration supported via ISO/IEC 17025-traceable weights
- IP54-rated enclosure for protection against dust ingress and accidental splashes during daily operation
- Modular design enabling field-upgradable firmware and configurable user permissions (administrator/operator/restricted access levels)
Sample Compatibility & Compliance
The Ranger7000 accommodates a broad spectrum of sample types—from powders and granules to irregular solids and small-volume liquid containers—when used with appropriate weighing pans, draft shields (optional), and anti-static accessories. Its pan geometry and clearance allow compatibility with standard 120 mm and 160 mm diameter weighing dishes, as well as custom fixtures for specialized applications such as tablet weight uniformity testing per USP . The balance conforms to international metrological standards including OIML R76-1 (2021), EN 45501:2015, and ANSI/NCSL Z540-1. When deployed in regulated environments, it supports audit trail generation, electronic signature capability (via optional software integration), and 21 CFR Part 11 compliance when paired with OHAUS Acquire™ or third-party validated data management platforms.
Software & Data Management
Data integrity and traceability are reinforced through native connectivity protocols and structured export formats (CSV, TXT, XML). The balance supports automatic data logging at user-defined intervals and conditional triggers (e.g., stable reading confirmation, tare event, or limit violation). Integration with OHAUS Acquire™ software enables centralized device configuration, remote diagnostics, batch report generation, and customizable certificate-of-calibration templates aligned with ISO/IEC 17025 requirements. All stored records include immutable metadata: date/time stamp, operator code (if enabled), balance serial number, calibration status flag, and environmental condition flags (where sensor-equipped models are deployed).
Applications
- Raw material receipt inspection and inventory reconciliation in pharmaceutical and chemical manufacturing
- Formulation batching and component verification in food and nutraceutical production lines
- Quality assurance testing—including weight variation, loss-on-drying (LOD), and ash content analysis—in accordance with ASTM E122, USP , and ISO 12083
- Teaching laboratories requiring durable, intuitive instrumentation for metrology education and method validation exercises
- In-process monitoring of coating thickness or plating mass via differential weighing on electroplating or surface treatment lines
FAQ
What calibration standards are recommended for routine verification?
ISO/IEC 17025-accredited Class F1 or Class M1 weights are recommended for daily performance checks; annual full calibration should be performed using traceable standards from an accredited calibration laboratory.
Does the Ranger7000 support GMP-compliant electronic signatures?
Yes—when operated with validated software (e.g., OHAUS Acquire™ v3.2+ or compliant LIMS), the balance supports role-based authentication, audit trail recording, and electronic signature capture per FDA 21 CFR Part 11 Annex 11 requirements.
Can the balance operate reliably in environments with significant vibration or air turbulence?
Vibration sensitivity is mitigated by internal damping algorithms and mechanical isolation; however, installation on a dedicated vibration-dampened bench or granite slab is strongly advised for sub-milligram repeatability.
Is firmware update capability available over network connection?
Firmware updates require local USB drive installation; remote update functionality is not supported to maintain system integrity and regulatory compliance.
What is the maximum permissible error (MPE) for this model under OIML R76 classification?
MPE follows Class II or Class III tolerances depending on selected capacity and readability—detailed specifications are provided in the Declaration of Conformity shipped with each unit and accessible via OHAUS Technical Documentation Portal.
