Longteng FBA-200-4 Explosion-Proof Precision Balance
| Brand | Longteng |
|---|---|
| Origin | Liaoning, China |
| Model | FBA-200-4 |
| Maximum Capacity | 200 g |
| Readability | 0.1 mg |
| Repeatability | ±0.1 mg |
| Calibration | Automatic |
| Explosion Protection Mark | Ex d IIB T4 |
| Hazardous Area Classification | Zone 1 & Zone 2 (IIA/IIB, T4) |
| Pan Size | 390 × 350 mm |
| Compliance | Designed to meet IEC 60079-1 (Flameproof Enclosure “d”) and ATEX Directive 2014/34/EU requirements for Group II equipment |
Overview
The Longteng FBA-200-4 is an explosion-proof precision balance engineered for safe, high-accuracy mass measurement in hazardous environments where flammable gases, vapors, or mists may be present. It operates on the principle of electromagnetic force compensation (EMFC), a widely adopted technology in analytical and precision balances that delivers stable, drift-free readings through real-time feedback control of coil current in response to load-induced displacement. The unit’s flameproof enclosure—certified to Ex d IIB T4 per IEC 60079-1—ensures full containment of any internal ignition source, preventing propagation to the surrounding atmosphere. This makes it suitable for continuous operation in Zone 1 and Zone 2 classified areas per IEC 60079-10-1, including facilities handling propellants, explosives, pyrotechnics, rocket propellant formulations, and industrial blasting agents.
Key Features
- Flameproof housing certified to Ex d IIB T4 (IEC 60079-1), compliant with ATEX 2014/34/EU for Group II equipment
- Electromagnetic force compensation (EMFC) sensor architecture delivering 0.1 mg readability and ±0.1 mg repeatability
- Automatic internal calibration system with temperature-compensated reference mass, reducing operator dependency and drift-related uncertainty
- Rugged stainless-steel weighing pan (390 × 350 mm) designed for mechanical stability and chemical resistance in industrial settings
- Sealed front panel with intrinsically safe keypad interface, rated IP65 for dust and water ingress protection
- Integrated overload and shock protection to sustain operational integrity during handling in dynamic production or R&D environments
- Low-power consumption design compatible with standard 220 V AC / 50 Hz supply, optimized for continuous-duty use in controlled hazardous zones
Sample Compatibility & Compliance
The FBA-200-4 accommodates solid, granular, and powdered samples commonly encountered in energetic materials manufacturing—including nitrocellulose, ammonium nitrate-based compositions, HMX, RDX, and composite propellant batches. Its large pan surface supports volumetric containers, crucibles, and custom fixtures used in formulation QA/QC workflows. From a regulatory standpoint, the instrument is constructed to support compliance with ISO/IEC 17025:2017 (clause 6.4.1 on equipment suitability), USP for balance performance verification, and GLP/GMP documentation requirements. While not inherently 21 CFR Part 11 compliant, its audit-ready output (via RS-232 or optional USB interface) enables integration into validated data acquisition systems supporting electronic record retention and operator traceability.
Software & Data Management
The balance features a built-in serial communication protocol (RS-232) supporting ASCII-based data streaming to external PCs or LIMS platforms. Optional software drivers facilitate automated data capture, timestamping, and CSV export—enabling traceable weight logs aligned with laboratory information management system (LIMS) workflows. All calibration events, zero checks, and error codes are stored in non-volatile memory with time/date stamps, supporting retrospective review during internal audits or regulatory inspections. Firmware updates are performed via secure USB interface under controlled change management procedures, consistent with ISO 9001 clause 7.5.2 on documented information control.
Applications
- Weighing of explosive formulations and sensitive pyrotechnic compositions in munitions assembly lines (e.g., warhead loading, fuse component verification)
- Batch consistency verification of propellant grain blends in aerospace propulsion R&D labs
- Raw material receipt inspection and intermediate process control in civilian blasting agent production facilities
- Calibration mass verification and reference standard handling in metrology labs serving defense contractors
- Quality control of pharmaceutical intermediates requiring weigh-in accuracy under Class I, Division 1 conditions (per NEC Article 500)
FAQ
What hazardous area classifications does the FBA-200-4 support?
It is certified for Zone 1 and Zone 2 (gas group IIB, temperature class T4) per IEC 60079-10-1 and EN 60079-14 installation standards.
Is external calibration required after installation?
No—automatic internal calibration eliminates routine external intervention; however, periodic verification using certified weights (e.g., ASTM E617 Class E2) is recommended per ISO/IEC 17025.
Can the balance interface with LIMS or ERP systems?
Yes—via RS-232 serial output with configurable baud rate and delimiter settings; third-party middleware or custom scripts can map outputs to enterprise databases.
Does the unit comply with FDA 21 CFR Part 11?
The hardware itself is not Part 11–enabled, but when integrated into a validated software environment with electronic signatures, audit trails, and access controls, it supports compliant data handling.
What maintenance intervals are recommended?
Visual inspection of enclosure integrity every 6 months; functional verification of explosion-proof joints annually; sensor linearity check biannually using traceable standards.
