Orion™ Star A323 3-in-1 (DO, RDO, Temperature) Portable Waterproof Meters

All Meters include 4 AA Batteries, Literature CD, Printed Quick Start Guide, Computer Interface Cable, and Meter Test Certificate. Please Note: Universal AC Adapter is sold separately.

Building upon the core capabilities of the A200 series, the Star A323 expands data integrity for regulated laboratories by increasing internal non-volatile memory up to 5,000 GLP-compliant data points—complete with time, date, sample ID, and user ID tagging. It seamlessly recognizes both optical luminescence RDO probes and traditional polarographic DO sensors. With flexible measurement modes (AUTO-READ™, continuous, or timed intervals), automatic temperature and barometric pressure compensation, and intuitive multi-language screen prompts, the A323 ensures audit-ready results anywhere in the field.

Key Functional Benefits:

• High-Capacity GLP Memory (5,000 Data Sets): Non-volatile memory stores up to 5,000 readings tagged with time, date, sample ID, and user ID to satisfy strict regulatory audit trails
• Dual Probe Technology Compatibility: Automatically detects and calibrates both RDO optical/luminescence sensors and conventional polarographic DO probes via a 9-pin MiniDIN connector
• Flexible Measurement Modes: Offers AUTO-READ™ stability lock, continuous reading, and timed interval logging for automated time-series field studies
• Full Environmental Compensation: Built-in barometer provides automatic barometric pressure correction (400 to 850 mmHg) alongside automatic temperature compensation and manual salinity adjustment
• IP67 Waterproof & Dust-Tight: Enclosed in a heavy-duty, field-ready housing designed to withstand harsh outdoor conditions, accidental drops, and water immersion
• Extended Battery Operating Life: Runs for over 800 hours on four standard AA batteries, eliminating power anxiety during extended field campaigns

Calibration & Power Flexibility:

• Multiple Calibration Protocols: Calibrate using water-saturated air, air-saturated water, custom manual values (Winkler titration), or zero-point calibration
• Power Options: Includes 4 AA batteries for 800+ hours of continuous mobile operation. An optional universal AC power adapter (Cat. No. 1010003) can be purchased for stationary laboratory benchtop use