Extech SDL150 Dissolved Oxygen Meter Datalogger

Accurate water quality meter that measures dissolved oxygen levels and stores results ready for transfer to a PC for further analysis.
More Info
In Stock - Available Next Day

Extech SDL150 Dissolved Oxygen Meter Data Logger

The Extech SDL150 Dissolved Oxygen Meter & Datalogger accurately displays and stores dissolved oxygen readings, oxygen in air readings and temperature for a comprehensive overview of water quality.

The SDL150 uses a polarographic oxygen probe with a built-in temperature sensor allowing simultaneous temperature compensation while taking dissolved oxygen readings, increasing accuracy of results.

The datalogging facility of the Extech SDL150 dissolved oxygen meter allows 99 readings to be stored manually on the instrument while the supplied SD card can store 20M readings complete with a date and time stamp. This test data can then be transferred to a PC for further analysis.

Extech SDL150 Dissolved Oxygen Meter/Datalogger Features:

  • Dual backlit display of Oxygen Concentration and Temperature
  • Measures dissolved oxygen from 0 to 20.0mg/L, oxygen from 0 to 100.0% and temperature from 0 to 50°C
  • Automatic Temperature Compensation from 0 to 50°C
  • Offset adjustment used for zero function to make relative measurements
  • Stores 99 readings manually and 20M readings via 2G SD card
  • User programmable sampling rate
  • Built-in PC interface
  • Min/Max and Data Hold functions, Auto power off

What's In The Box?

  • Extech SDL150 Dissolved Oxygen Meter
  • Polarographic Probe
  • 2 x Spare Membranes
  • Electrolyte
  • 2GB SD Card
  • 6 x AA Batteries
  • Hard Carry Case

Dissolved Oxygen

  • Range: 0 - 20.0mg/L
  • Accuracy: ±0.4mg/L


  • Range: 0 - 100%
  • Accuracy: ±0.7%


  • Range: 0 - 50 °C
  • Accuracy: ±0.8°C

Probe Compensation

  • Salt: 0 - 50%
  • Altitude: 0 - 8910m
  • Temperature: 0 - 50°C
  • Dimensions: 182 x 73 x 47.5mm
  • Weight: 725g