A&D FX-i Series Precision Electronic Balance

Overview

The A&D FX-i Series Precision Electronic Balance is an advanced analytical and semi-micro weighing platform engineered for laboratories requiring high repeatability, rapid stabilization, and regulatory-compliant operation. Utilizing A&D’s proprietary SHS (Super Hybrid Sensor) technology—a dual-load-cell architecture combining electromagnetic force compensation with strain-gauge redundancy—the FX-i series achieves exceptional linearity, temperature stability, and shock resistance. Unlike conventional single-sensor balances, the SHS design enables consistent 1-second stabilization across the full capacity range, even under minor environmental fluctuations or mechanical disturbance. The FX-i balances are designed for routine QC testing, formulation verification, sample preparation, and regulated environments where traceability, audit readiness, and operational efficiency are non-negotiable. With compact B5 footprint (170 × 225 mm), integrated rechargeable battery, and robust metal housing, the series supports both benchtop and mobile lab workflows without compromising metrological integrity.

Key Features

• SHS Sensor Technology: Delivers ≤1 s stabilization time and long-term drift stability (<0.002 g/8 h at 23 °C), validated per ISO 17025 calibration protocols.
• Regulatory-Ready Architecture: Built-in GLP/GMP/GCP compliance tools—including user-defined ID logging, timestamped calibration records, and electronic signature support via WinCT-PLUS software.
• Multi-Interface Connectivity: Standard RS-232C, driver-free USB virtual COM port (CDC class), and optional 10/100BASE-TX Ethernet—enabling seamless integration into LIMS, ELN, and MES systems.
• ACAI Function: Automatically adjusts counting algorithm based on sample weight distribution and vibration profile, improving parts-per-million counting accuracy without manual threshold tuning.
• Intelligent Power Management: Rechargeable Ni-MH battery (FXi-09 variant) provides up to 8 hours of continuous operation; auto-on/off activation reduces standby power consumption by >90%.
• Ergonomic Human Interface: High-luminance fluorescent display with 18 mm digit height, wide viewing angle (>140°), and configurable brightness levels for low-light or UV-controlled environments.

Sample Compatibility & Compliance

The FX-i series accommodates diverse sample types—from fine powders and hygroscopic standards to irregularly shaped solids and live small animals (via optional animal weighing mode with dynamic averaging). All models feature a standard draft shield (for 1 mg readability variants) and optional large-radius arc shield (FXi-11) for volatile or static-prone materials. The balance meets ISO 9001:2015 requirements for measurement process control and complies with ASTM E898–22 (Standard Guide for Selection and Use of Laboratory Balances), USP (Weights and Balances), and EU Annex 11 (Computerized Systems). Internal calibration routines adhere to ISO/IEC 17025:2017 Clause 6.5.2, supporting accredited labs in maintaining documented uncertainty budgets.

Software & Data Management

WinCT-PLUS (Windows-based, v4.2+) serves as the certified data acquisition and reporting engine for FX-i instruments. It supports 21 CFR Part 11-compliant audit trails—including immutable event logs for weighings, calibrations, and configuration changes—with role-based access control (RBAC) and electronic signature capture. Data export formats include CSV, PDF (with embedded metadata), and XML for direct ingestion into SAP QM or LabWare LIMS. Real-time SPC charting (X-bar/R, Cp/Cpk) and automated report generation (per ISO/IEC 17025 Annex A.3) are natively supported. All firmware updates are digitally signed and verified prior to installation, ensuring cryptographic integrity throughout the device lifecycle.

Applications

• Pharmaceutical QC: Active pharmaceutical ingredient (API) dispensing, tablet weight uniformity testing (USP ), and reference standard reconciliation.
• Chemical R&D: Catalyst mass dosing, stoichiometric reagent preparation, and gravimetric titration support.
• Food & Beverage: Net content verification (EU Directive 76/211/EEC), moisture loss tracking, and portion control validation.
• Academic Research: Isotope ratio sample prep, nanomaterial dispersion quantification, and microgravimetric corrosion studies.
• Clinical Diagnostics: Reagent kit assembly, blood sample aliquoting, and calibration standard preparation under CLIA-certified workflows.

FAQ

Does the FX-i series support internal calibration with external weights?
No—the FX-i models use digital internal calibration (DIC) with factory-traceable reference values stored in EEPROM. External calibration is possible only via service-mode diagnostics performed by A&D-certified technicians.

Is WinCT-PLUS compatible with Windows 11 and macOS?
WinCT-PLUS is officially validated for Windows 10/11 (64-bit) only. macOS compatibility is not provided; however, Ethernet-connected units may be accessed via third-party HTTP API clients on macOS/Linux.

What is the maximum permissible error (MPE) for FX-120i at full load?
Per OIML R 76-1 Class II specifications, MPE = ±0.002 g at 122 g (applies to verified calibration state under ISO 17025-accredited conditions).

Can the balance store weighing data locally when disconnected from a PC?
Yes—up to 2,000 timestamped records (including weight, unit, operator ID, and mode) are retained in non-volatile memory and exportable via USB mass-storage mode.

Is the Ethernet interface PoE-capable?
No—the FX-i Ethernet port requires separate 5 V DC power; it does not support IEEE 802.3af/bt Power over Ethernet.