PME miniDOT Dissolved Oxygen Logger
Features
- Long-lasting sensor with stable calibration
- Up to 1-year battery life with user-replaceable batteries
- Also records time, date, and battery voltage
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The PME miniDOT is a submersible instrument that includes an optical DO sensor, a temperature sensor, batteries and a micro SD memory card. Data is recorded internally with a sample interval from once per minute to once per hour and can be offloaded to a computer via USB cable.
Internal Storage
The miniDOT sensor is an optode that measures lifetime-based luminescence quenching of a thin membrane. The sensing foil contains a coating with a variable fluorescence that depends on oxygen concentration in the surrounding water. The sensor can compute oxygen concentration in mg/L and record these measurements internally. Each logger is factory-calibrated at 12 oxygen concentrations, each at 8 temperatures, for a total of 96 calibration points.
The PME miniDOT determines DO in water using an optode that measures flourescence.
The PME miniDOT includes free Java-based Windows software for configuration the logger and offloading data. The software will also compute oxygen saturation from the miniDOT logger measurements. A USB to micro USB cable is sold separately and required to communicate with the logger.
With a 1-minute sample interval, the logger will remain powered for approximately 1-year.
PME states that Alkaline batteries are good for short deployments, where lithium batteries are best for longer deployments, or deployments in cold environments. Battery life and other options are discussed further on page 10 of manual.
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