Dissolved Oxygen Pocket-Size EZDO 7031

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Dissolved Oxygen Pocket-Size EZDO 7031 Dissolved Oxygen Meter

7031 Waterproof Pen Type DO Meter


  1. Microprocessor based for fast and accurate measurements.
  2. Special viewing angle designed of waterproof housing IP 57 rated. It floats on water.
  3. Large LCD display DO and Temperature readings simultaneously.
  4. Simple to calibrate by one keyboard and automatic temperature compensation(ATC), Manual Salinity(MSC) and Altitude(MAC) Compensation.
  5. Multi-functions with Data-hold, Max/Min and shows PTS after calibration. Degree /H are switchable.
  6. Low battery and consumption indicator.
  7. Easy to replace the DO probe module.




  DO O2 Temp
Range 0~20.00mg/L 0~200% 0~90.0
Accuracy  ±0.2 + 1digit ± 2% FS ±0.2+1 digit
Resolution 0.01 0.1 0.1
ATC 0~50
MSC 0~50 ppt
MAC 0-20000 ft
Calibration 100% in air
Power  DC1.5V x 4 battery  size:AAA/UM-4
Dimensions Meter: 195 x 40 x 36 mm, Kits: 230 x 205 x 50 mm
Weight Meter: 135g(with battery), Kits: 780g

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