Trace2o Ltd.

- Model HL103 - Pocket Dissolved Oxygen Meter



A simple pocket dissolved oxygen meter using an industry-standard polarographic DO probe, offering 1 or 2 point calibration using air-saturated water or zero oxygen solution. Automatic temperature compensation, and manual salinity and barometric pressure compensation improve accuracy across the entire measurement range. The HL103 is designed for ease of use, with auto-hold functionality to freeze a stable reading for ease of recording. A visible battery indicator and auto-off functions effectively conserve and communicate battery life to the user. A fully replaceable electrode module reduces maintenance costs.

Dissolved Oxygen

  • Range: 0.0~20.0mg/L (or ppm)
  • Accuracy: ±0.5mg/L
  • Resolution: 0.1mg/L

% Saturation of Oxygen

  • Range: 0.0~200.0%
  • Accuracy: ±10% F.S
  • Resolution: 0.1%


  • Temperature Compensation: 0~40°C, 32~104°F
  • Barometric Pressure Correction: 60.0~112.5kPa, 450~850mmHg
  • Salinity Correction: 0~35g/L
  • Hold Function: Manual or Automatic
  • Power Off: Manual or Automatic (8 minutes after last key pressed)
  • Reset Function: Yes
  • Connector: 6-pin
  • Power Requirements: 2×1.5V 'AAA' Batteries
  • Battery Life: Approximately 150 hours
  • Dimensions: 175(L)×40(Dia.)mm
  • Weight: 100g

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