OHAUS Navigator NVT6200ZH Portable Precision Balance
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-made) |
| Model | NVT6200ZH |
| Instrument Type | General-Purpose Portable Balance |
| Maximum Capacity | 6200 g |
| Readability | 1 g |
| Repeatability | ±1 g |
| Calibration Method | External |
| Overload Protection | Up to 400% of full scale (24,800 g) |
| Transport Lock | Integrated mechanical sensor lock |
| Compliance | Designed for GLP-compliant environments |
Overview
The OHAUS Navigator NVT6200ZH is a robust, entry-level portable precision balance engineered for reliable mass measurement in non-regulated and semi-regulated environments—including quality control labs, educational institutions, field service operations, light industrial settings, and R&D support spaces. It operates on electromagnetic force compensation (EMFC) principle, delivering stable and repeatable results under variable ambient conditions. With a maximum capacity of 6200 g and readability of 1 g, the NVT6200ZH bridges the functional gap between basic platform scales and high-precision analytical balances—offering deterministic performance without the complexity or cost associated with sub-gram resolution instruments. Its compact footprint, integrated carry handle, and battery-powered operation (optional AC adapter included) make it suitable for mobile use across workshops, warehouses, classrooms, and multi-site facilities.
Key Features
- Fourfold mechanical overload protection: Engineered to withstand transient loads up to 24,800 g (400% of rated capacity), significantly extending sensor service life and reducing downtime due to accidental overloading.
- Integrated transport lock: A manually engaged mechanical latch secures the load cell during transit, preventing micro-displacement or shock-induced calibration drift—critical for maintaining long-term metrological integrity.
- Rapid stabilization: Achieves stable readout in as little as 1 second under optimal environmental conditions (temperature-stable, draft-free), accelerating throughput in high-volume routine weighing tasks.
- Intuitive user interface: Large backlit LCD display with clear digit height (18 mm), dual-unit switching (g, oz, lb:oz, ct), and context-sensitive function keys reduce operator training time and minimize input errors.
- Dual power flexibility: Operates on rechargeable Ni-MH batteries (up to 100 hours continuous use) or standard AC adapter—enabling uninterrupted operation in both fixed and remote locations.
- IP42-rated housing: Dust-resistant enclosure with splash-resistant front panel meets basic industrial environmental requirements while supporting easy wipe-down cleaning protocols.
Sample Compatibility & Compliance
The NVT6200ZH accommodates a wide range of sample types—from bulk powders and granular solids to packaged components and irregularly shaped objects—within its 160 mm × 200 mm stainless steel weighing pan. While not certified for Class I or II metrological approval (e.g., OIML R76 or NIST Handbook 44), the balance is designed to support traceable calibration practices aligned with ISO/IEC 17025:2017 Clause 6.5 (Equipment). External calibration using Class M2 or better weights is required prior to first use and at defined intervals per internal quality procedures. The device complies with CE marking directives (2014/30/EU EMC, 2011/65/EU RoHS) and meets FCC Part 15 Subpart B for electromagnetic compatibility in commercial environments.
Software & Data Management
The NVT6200ZH features RS232 serial output for direct connection to PCs, label printers, or LIMS systems. ASCII-formatted data transmission supports seamless integration into custom Excel-based logging templates or third-party data acquisition platforms. Optional OHAUS Logger Pro software (v3.0+) enables timestamped data capture, statistical analysis (mean, SD, CV%), and export to CSV/PDF formats. Audit trail functionality is limited to manual logbook entries; for full 21 CFR Part 11 compliance—including electronic signatures, user access controls, and immutable audit logs—a validated higher-tier balance (e.g., Explorer or Adventurer PRO series) is recommended.
Applications
- Raw material receipt inspection in food processing and chemical distribution centers
- Batch formulation verification in pharmaceutical excipient handling (non-GMP staging areas)
- Inventory management and parcel weighing in logistics and warehousing
- Student laboratory experiments requiring gross-mass determination (e.g., density calculations, stoichiometric preparation)
- Maintenance workshop tool calibration checks and component counting by weight
- Field-based agricultural sampling where portability and ruggedness outweigh sub-gram resolution needs
FAQ
Is the NVT6200ZH suitable for GLP or GMP environments?
It can be deployed in GLP-aligned workflows when supported by documented calibration, maintenance, and usage records—but lacks built-in features (e.g., user authentication, electronic audit trail) required for formal GMP compliance.
What calibration weights are recommended for external calibration?
Class M2 stainless steel weights certified to ISO 9001 or ISO/IEC 17025, with nominal values covering at least 5%, 50%, and 100% of full scale (e.g., 310 g, 3100 g, 6200 g).
Can this balance be used in humid or dusty environments?
Its IP42 rating provides protection against solid objects >1 mm and vertically falling water droplets only; prolonged exposure to high humidity or airborne particulates is not advised without supplemental environmental controls.
Does the balance support auto-calibration?
No—calibration is strictly manual and external; no internal reference mass or motorized calibration mechanism is present.
What is the warranty coverage?
OHAUS provides a standard 2-year limited warranty covering parts and labor for defects in materials and workmanship under normal use conditions.
