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The YSI EcoSense DO200A dissolved oxygen meter presents a robust solution for professionals seeking portable yet precise water quality measurement tools. This compact handheld device combines dissolved oxygen measurement (in both air saturation % and ppm) with temperature readings, offering an efficient platform for diverse sampling strategies across field and laboratory environments.

Durable Design for Field Applications

The DO200A distinguishes itself through rugged construction suitable for demanding environments:

• IP67 Protection: Resistant to dust ingress and capable of temporary water immersion, ensuring reliable operation in wet or dusty field conditions.
• Extended Data Storage: Internal memory retains 50 measurement sets, facilitating longitudinal data analysis for research and monitoring projects.
• Ergonomic Optimization: Weight-balanced design reduces user fatigue during prolonged field use while maintaining compact dimensions (specific dimensions not provided).

Precision Measurement Technology

The instrument incorporates multiple compensation mechanisms to ensure measurement accuracy:

• Automatic Temperature Compensation (ATC): Integrated temperature sensor adjusts dissolved oxygen readings in real-time to account for thermal variations.
• Manual Environmental Adjustments: Allows user input for salinity and barometric pressure values to accommodate marine environments or altitude variations.
• Efficient Sensor Design: Features replaceable threaded cap-style membrane with low-stirring requirements for rapid stabilization.

Operational Efficiency

The DO200A optimizes field workflow through several practical features:

• Extended Battery Life: Standard 9V alkaline battery supports approximately 500 hours of continuous operation with low-power indication.
• Auto-Shutdown Function: Conserves power by automatically deactivating after 30 minutes of inactivity.
• Field-Ready Connectivity: Available with 4m or 10m probe cables for accessing distant sampling points.

Regulatory Compliance and Specifications

The device meets environmental monitoring standards with polarographic and galvanic sensor options approved by the U.S. Environmental Protection Agency (EPA). The instrument does not include an integrated barometer, requiring manual atmospheric pressure input during calibration procedures.

Standard packaging includes the measurement unit, 9V battery, and operation manual. Optional BOD probe accessories expand the system's capability for biochemical oxygen demand testing.