Rugged and reliable, this meter uses an ODO (Optical Dissolved Oxygen) luminescent sensor that eliminates both the need for stirring and frequent membrane changes. Because the sensor has no flow dependence, it is ideal for deep water profiling where stirring is either difficult or undesirable. In addition, the lack of flow dependence reduces the possibility of operator error and ensures high quality data. The ProODO features a DO range of 0 to 500% and includes a barometer for continual compensation. The ”smart” digital sensor technology stores calibration data within the sensor, allowing probes to be placed on any ProODO instrument without calibration. The meter’s advanced technology reduces the time and expense related to calibrating and maintaining sensors. Depending on usage, calibrations can be stable for up to one year, and there are no electrodes to clean or solutions to change. The meter stores 2,000 data sets (sensor data, date, time, site, and user-defined information), and managing the data is easy using the included Data Manager software. The ProODO features a backlit display and keypad and is housed in an impact-resistant, IP-67 waterproof case. Three-year warranty on the instrument and two-year warranty on the cable and probe from the manufacturer. Specifications Dissolved Oxygen (% Saturation): Range, 0 to 500% air saturation; Accuracy, 0 to 200% air saturation, °1% of the reading or °1% air saturation, whichever is greater; 200 to 500% air saturation, °15% of the reading; Resolution, 0.1% air saturation. Dissolved Oxygen (mg/L): Range, 0 to 50 mg/L; Accuracy, 0 to 20 mg/L, °0.1 mg/L or °1% of reading, whichever is greater; 20 to 50 mg/L, °15% of the reading; Resolution, 0.01 or 0.1 mg/L (auto-scaling). Temperature (°C, °F, °K): Range, -5° to 70°C; Accuracy, °0.2°C; Resolution, 0.01°C. Barometer (mmHg, inHg, mBar, Psi, KPa): Range, 375 to 825 mmHg; Accuracy, °1.5 mmHg from 0 to 50°C; Resolution, 0.1 mmHg. Response Time: 90% of reading within 25 seconds. Calibration: DO, one point or two point with a zero % value; Barometer, one point. Storage Temperature: -20° to 70°C. Power: 2 C cell alkaline batteries. Dimensions: Meter, 3.25”W x 8.5”L x 2.25”D; Probe, 7.5”L x 0.95” dia. Weight: 1.05 lbs. (with batteries).
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