Dissolved Oxygen Monitoring System Optical Dissolved Oxygen Sensor Electrode Probe Dissolved Oxygen Meter
Here are some key features and components commonly found in portable dissolved oxygen meters:
Electrode or Sensor: The heart of the DO meter is the oxygen sensor or electrode. There are two main types of electrodes used in portable DO meters: polarographic and galvanic. Polarographic electrodes are more common and offer high accuracy, while galvanic electrodes are typically used for quick readings but may have a shorter lifespan.
Temperature Compensation: Many portable DO meters include a built-in temperature sensor or accept an external temperature probe. Temperature compensation is crucial because the solubility of oxygen in water varies with temperature.
Display: A digital display provides real-time readings of dissolved oxygen levels. It typically shows the DO value in units such as mg/L (milligrams per liter) or % saturation.
Calibration: Regular calibration is essential to maintain accuracy. Portable DO meters usually offer one or two-point calibration using standard solutions with known oxygen concentrations.
Data Logging: Some advanced models have data logging capabilities, allowing you to record measurements over time. This feature is valuable for tracking changes in oxygen levels.
Battery Power: Portable meters are powered by batteries, so consider the battery life and the availability of rechargeable batteries when choosing a meter for extended fieldwork.
Waterproof and Durability: Fieldwork often involves exposure to harsh conditions, so a rugged and waterproof design is essential for durability.
Portability: These meters are designed to be easily carried in the field, so they are typically compact and lightweight.
User Interface: A user-friendly interface with intuitive buttons or a touchscreen makes it easier to operate the meter in the field.
Accessories: Portable DO meters may come with accessories such as carrying cases, protective covers, and calibration solutions.