Extech Dissolved Oxygen Meter Data Logger – SDL150

In stock

This dissolved oxygen meter records and time stamps readings on an SD card in Excel format. This makes data transfer to a PC fast and easy. With automatic temperature compensation.

Extech Dissolved Oxygen Meter Data Logger – SDL150

Data logger date/time stamps and stores readings on an SD card in Excel Format for easy transfer to a PC


  • Dual display of oxygen concentration and temperature
  • Measures dissolved oxygen from 0 to 20.0mg/L and 0 to 100.0% oxygen plus temperature from 32 to 122°F (0 to 50°C)
  • Automatic temperature compensation from 0 to 50°C via temperature sensor built into polarographic type oxygen probe
  • Selectable data sampling rate: 1 second to 8hrs:59min:59sec
  • Manually store/recall up to 99 readings
  • Large backlit dual LCD screen
  • Record/Recall Min, Max readings
  • Data Hold plus auto power off with disable function
  • Built-in PC interface
  • Comes complete with:
    • 6 AA battereies
    • SD card
    • Probe
    • Spare probe head with diaphragm
    • Electrolyte
    • Hard carrying case
  • 3 year warranty (meter)/ 6 months conditional warranty (electrode)

Dissolved oxygen is vital to many aquatic species including fish and other aquatic organisms. When dissolved oxygen levels are too low water becomes stagnant and it can result in large numbers of fish kills. Water is oxygenated through aquatic plant photosynthesis, rain, streams and from the air.

Knowing this concentration can be the difference between a healthy aquarium, fish farm, pond or aquatic environment. Lab applications of dissolved oxygen meters are easily met by this highly accurate instrument. With automatic temperature compensation between 0 and 50°C and compensations for altitude and salt as well.

This meter has the added ability to data log information straight onto a SD card. This data logging feature can save up to 20M readings on a 2G SD card, easily monitoring dissolved oxygen with an adjustable sampling rate.


  • Range:
    • Dissolved Oxygen: 0 to 20.0 mg/L
    • Oxygen: 0 to 100.0%
    • Temperature: 32 to 122°F (0 to 50°C)
  • Accuracy:
    • Dissolved Oxygen: ±0.4 mg/L
    • Oxygen: ±0.7%
    • Temperature: ±0.8°C/1.5°F
  • Probe Compensation & Adjustment:
    • Salt: 0 to 50%
    • Altitude: 0 to 8910m
    • Temperature: 0 to 50°C
  • Dimensions: 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm) (meter only) Probe: 28mm(1.1")D x 190mm(7.5")L
  • Weight: 25.6oz (725g)

Unit Ship Weight: 2 lbs

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