Analytical Balances AT-R series

Significance of the Topic

The accurate measurement of small masses is fundamental in analytical chemistry, affecting outcomes in research, quality control and industrial processes. High-precision balances like the Shimadzu AT-R series optimize both responsiveness and stability, reducing measurement uncertainty and improving workflow efficiency in environments subject to vibration, air currents or electrostatic interference.

Objectives and Overview

This document introduces the AT-R series analytical balances, highlighting their design goals: to offer user-selectable weighing performance, seamless digital connectivity, and enhanced static control. It summarizes key technical features, performance data and optional accessories that support diverse laboratory applications.

Methodology and Instrumentation

The AT-R balances deliver adjustable measurement modes via a 5-stage indicator, allowing users to prioritize either rapid response or enhanced stability. Standard digital interfaces (USB and RS232C) enable direct data transfer to computers or PLCs from major manufacturers, preventing transcription errors. An optional STABLO™-AP ionizer neutralizes static charges on samples and containers, improving repeatability without generating air currents. Accessories such as printers, specific gravity kits and protective covers extend instrument functionality.

Main Results and Discussion

Performance specifications demonstrate capacities from 62 g to 320 g with readabilities of 0.1 mg or 0.01 mg. Repeatability lies between ≤0.10 mg and ≤0.15 mg, and linearity is maintained within ±0.2–0.3 mg. Typical response time for the fastest mode is approximately 3.0 seconds. The pan diameter is about 91 mm, and overall dimensions measure roughly W213 × D356 × H338 mm. Built-in or external calibration options ensure measurement integrity. Integration tests confirm compatibility with Mitsubishi Q Series, Keyence KV-8000, Omron CJ2 and IDEC FC6A PLCs.

Benefits and Practical Applications

The AT-R series enables:

• Rapid yet precise weighing of powders, liquids and small samples by switching between response and stability modes.
• Automated data logging via USB or RS232C, reducing human error in regulated environments.
• Improved reproducibility through static elimination, crucial for trace analysis and micro-weighing tasks.

These capabilities support laboratories in pharmaceutical development, environmental testing, materials science and industrial QC.

Future Trends and Applications

Emerging demands for connected laboratories will drive adoption of balances with network integration, remote monitoring and cloud-based data management. Advances in static control and miniaturization may further improve micro-weighing accuracy. Integration with robotic sample handling and AI-based quality assessment will enhance throughput and data reliability.

Conclusion

The Shimadzu AT-R series balances combine flexible performance settings, robust connectivity and static control features to meet modern analytical challenges. Their adaptability and precision make them valuable assets for a wide range of laboratory environments.

References

Shimadzu Corporation (2019) ‘‘AT-R Series Analytical Balances,’’ Application Note C054-E077A, First Edition October 2019.