A&D GX203AWP IP65 Dust- and Water-Resistant Precision Balance

Overview

The A&D GX203AWP is an industrial-grade precision balance engineered for high-reliability weighing in demanding laboratory, quality control, and production environments where dust, moisture, or frequent cleaning protocols are routine operational constraints. Based on A&D’s proprietary SHS (Super Hybrid Sensor) technology, the GX203AWP delivers rapid stabilization—achieving stable readings in under one second—with exceptional mechanical robustness against shock and vibration. Its core measurement principle relies on electromagnetic force compensation (EMFC), ensuring long-term linearity, temperature stability, and minimal drift across extended usage cycles. Designed explicitly for compliance-critical workflows, the GX203AWP meets IP65 ingress protection standards (dust-tight and resistant to low-pressure water jets from any direction), making it suitable for wet-process labs, pharmaceutical cleanrooms with periodic sanitization, food processing lines, and chemical formulation areas where hygiene integrity and instrument longevity are non-negotiable.

Key Features

• IP65-rated enclosure: Fully sealed housing and SUS316 stainless-steel weighing pan enable direct high-pressure water rinsing without risk of sensor contamination or electronic failure.
• SHS ultra-fast stabilization: Achieves metrologically valid readings in ≤1.0 s (0.8 s typical with ≥5 g load), minimizing throughput bottlenecks in high-volume QC sampling.
• Automatic internal calibration (Auto-Cal): Motor-driven internal reference mass engages at user-defined intervals or ambient temperature shifts (>1.5 °C), eliminating manual calibration drift and ensuring traceable accuracy per ISO/IEC 17025 requirements.
• Impact Sensing Detection (ISD): Monitors and logs mechanical shock events exceeding configurable thresholds—critical for validating scale integrity after transport or accidental impact in manufacturing settings.
• Automatic Minimum Weight Assessment (APA): Implements A&D’s ECL (Enhanced Calibration Logic) algorithm to dynamically verify repeatability and determine the smallest valid net weight per USP and EU GMP Annex 8 guidelines.
• Flow Rate Display (FRD): Real-time calculation of mass flow (g/s or g/min) for liquids or powders during dispensing or transfer operations—enabling closed-loop process monitoring without external controllers.
• Dual communication interface: Simultaneous RS-232C and USB connectivity supports concurrent connection to PCs (for LIMS/ELN integration) and peripheral devices (e.g., printers, PLCs, or barcode scanners).

Sample Compatibility & Compliance

The GX203AWP accommodates a broad range of sample types—including hygroscopic solids, viscous suspensions, and pre-weighed containers—without compromising readability or repeatability. Its elevated pan design and reinforced plate-spring support structure minimize lateral force transmission to the EMFC transducer, preserving accuracy during off-center loading or dynamic placement. The balance complies with international metrological standards including OIML R76-1 (2021), JIS B 7721, and ANSI/NCSL Z540. Data outputs conform to GLP, GMP, and GCP documentation requirements, with timestamped, user-ID-tagged records exportable in CSV or XML formats. When paired with A&D’s optional AD-1687 software, the system supports full 21 CFR Part 11 compliance—including electronic signatures, audit trails, and role-based access controls.

Software & Data Management

The GX203AWP natively supports ASCII-based serial communication protocols compatible with industry-standard laboratory informatics systems (e.g., LabWare LIMS, Thermo Fisher SampleManager). Its built-in memory stores up to 999 weighing records with metadata (operator ID, date/time stamp, gross/net/tare flags, and ISD event logs). Optional AD-1687 WinCT software enables automated report generation compliant with ISO/IEC 17025 clause 7.7, including calibration history, uncertainty budgets, and APA-derived minimum weight validation reports. USB Mass Storage mode allows direct drag-and-drop export of raw data files without driver installation—ideal for regulated environments restricting third-party software deployment.

Applications

• Pharmaceutical formulation and API weighing under cGMP Annex 1 and USP
• In-process checks in food manufacturing where washdown sanitation mandates IP65-rated equipment
• Quality assurance of catalysts, pigments, and battery electrode materials requiring sub-milligram precision in humid environments
• Calibration lab secondary standard verification using internal motorized weights traceable to NMI-Japan
• Research laboratories conducting gravimetric analysis of corrosion samples or filter residues exposed to saline or acidic atmospheres
• Automated batching systems integrating FRD output into PLC-controlled feed rate modulation

FAQ

What does IP65 certification mean for daily operation?
IP65 indicates complete protection against dust ingress and resistance to water projected by a nozzle (6.3 mm) from any direction at low pressure (30 kPa) for at least 3 minutes—enabling safe use in wet zones and permitting routine disinfectant spraying or rinse-down procedures.
Is internal calibration sufficient for ISO/IEC 17025 accreditation?
Yes—provided the internal weight is periodically verified against an accredited external standard (e.g., annually), Auto-Cal satisfies traceability requirements for routine in-house calibration as defined in Clause 6.5.2 of ISO/IEC 17025:2017.
Can the GX203AWP be used with rechargeable battery power?
An optional Li-ion battery pack (AD-8334B) is available, providing up to 8 hours of continuous operation—ideal for mobile QC stations or field deployment where mains power is unavailable.
How does APA differ from conventional repeatability testing?
APA executes a statistically rigorous sequence of repeated weighings across multiple load points, applying ANOVA-based evaluation to determine the smallest weight at which measurement uncertainty remains within user-defined tolerances—directly supporting USP and Ph. Eur. 2.2.38 compliance.
Does the balance support Ethernet or Wi-Fi connectivity?
No—the GX203AWP features RS-232C and USB only; however, USB-to-Ethernet adapters compliant with CDC ACM class drivers may be used for networked data forwarding in validated environments.