Beifen Sanpu FA-2004 Precision Analytical Balance

Overview

The Beifen Sanpu FA-2004 Precision Analytical Balance is an entry-level high-resolution analytical instrument engineered for routine quantitative mass measurement in quality control laboratories, academic research settings, and pharmaceutical production environments. Operating on electromagnetic force compensation (EMFC) principle, the balance delivers stable, drift-compensated readings under variable ambient conditions—including minor air currents and temperature fluctuations common in non-climate-controlled lab spaces. With a maximum capacity of 200 g and readability of 0.1 mg (100 µg), it conforms to the ISO 9001-certified manufacturing standards applied across Beifen Sanpu’s analytical instrumentation line. Its internal automatic calibration system—activated via front-panel key or scheduled timer—ensures traceable metrological integrity without requiring external weights, supporting compliance with GLP and GMP documentation requirements where audit-ready calibration logs are mandatory.

Key Features

• Electromagnetic force compensation sensor architecture delivering high reproducibility and minimal hysteresis
• Internal motorized calibration mechanism with real-time verification of zero point and span accuracy
• Adjustable integration time and sensitivity settings to optimize response dynamics for viscous, volatile, or electrostatic-prone samples
• RS232C serial interface compliant with standard laboratory data acquisition protocols; supports direct connection to printers, PCs, and LIMS systems
• Backlit LCD display with large-character formatting for rapid visual verification in low-light or high-throughput workflows
• Dual-mode weighing capability: top-loading for standard solids and below-balance suspension for density determination or magnetic sample handling
• Multi-unit conversion (grams, carats, ounces) and piece-counting mode with configurable reference weight input
• External power supply design minimizing thermal load on the weighing chamber and improving long-term stability

Sample Compatibility & Compliance

The FA-2004 accommodates standard laboratory containers including weighing boats, crucibles, and vials up to 90 mm in diameter, compatible with common Class A volumetric glassware and USP-compliant pharmaceutical packaging formats. Its draft shield-compatible form factor allows seamless integration into ISO 14644-1 Class 7 cleanroom workstations when used with optional acrylic enclosures. The balance meets the mechanical and performance criteria outlined in ASTM E898–21 (Standard Specification for Laboratory Balances) and supports traceability to national metrology institutes via documented calibration certificates. Firmware includes audit trail logging for calibration events and user-initiated functions, satisfying FDA 21 CFR Part 11 requirements for electronic records when deployed with validated software interfaces.

Software & Data Management

Data output follows ASCII-based RS232C framing at 9600 baud, 8N1 configuration, enabling native compatibility with Microsoft Excel, LabArchives ELN, and Thermo Fisher SampleManager LIMS without proprietary drivers. Each transmitted record includes timestamp, net weight, unit identifier, and operator ID (if configured). Optional Beifen Sanpu DataBridge Utility provides batch export, CSV formatting, and automated folder archiving—supporting ISO/IEC 17025 clause 7.7 data integrity controls. All firmware updates are delivered as signed HEX files with SHA-256 checksum verification to prevent unauthorized modification.

Applications

• Pharmaceutical active ingredient (API) formulation and tablet weight uniformity testing per USP <905>
• Chemical reagent dispensing and stoichiometric ratio validation in synthetic organic labs
• Environmental sample preparation for ICP-MS and GC-MS analysis requiring sub-milligram quantitation
• Materials science powder characterization, including specific gravity and bulk density calculations
• Educational use in undergraduate chemistry and physics curricula for uncertainty propagation exercises
• Food safety laboratories performing moisture content and ash residue gravimetric assays

FAQ

What is the minimum sample mass recommended for reliable measurement at 0.1 mg readability?
For optimal repeatability and reduced relative uncertainty, samples should exceed 100 mg—consistent with the 10× rule-of-thumb for analytical balances operating near their resolution limit.
Does the FA-2004 support external calibration with certified weights?
Yes; manual calibration mode accepts NIST-traceable Class E2 or better weights, with verification prompts confirming deviation thresholds per OIML R76.
Is the RS232C interface compatible with modern Windows 11 systems?
Yes—when used with a USB-to-serial adapter meeting FTDI chipset specifications and standard COM port drivers.
Can the balance be operated continuously for 24/7 production monitoring?
It is rated for 8-hour daily operation under ISO 14405-1 environmental class II conditions; extended duty cycles require periodic warm-up stabilization and recalibration.
How is the tare function implemented during accumulation mode?
Tare value remains fixed across sequential weighings unless manually reset, enabling consistent net mass summation for multi-step gravimetric procedures.