Hanna Instruments HI-9146 Water Resistant Portable Dissolved Oxygen Meter, Complete with DO probe

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The HI-9146 portable Dissolved Oxygen meter is a rugged water-resistant instrument offering an extended range for measuring Dissolved Oxygen and temperature.

Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.Replaceable Electrode – No need to replace the whole meter when the electrode needs replacing. Spare and replacement electrodes are available for this product.
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Developed for dissolved oxygen and temperature measurement in water, wastewater and applications such as fish farming, it also allows compensation for altitude and salinity.

The HI-9146 is supplied with a Polarographic probe with a 4m cable and measures a DO range of up to 300%

Key features

  • 4m cable for ease of use
  • Robust waterproof casing designed for field applications
  • Backlit display is helpful for use in low ambient light levels
  • On-screen tutorial messages remove need to take manual out on location
  • Low battery indicator
  • DO range up to 300% plus temperature compensation
  • GLP features
  • Polarographic probe included as standard features built-in temperature compensation and removable, protective membrane cover

Main benefits

  • Allows altitude compensation up to 4000m
  • Salinity compensation up to 80g/L
  • Automatic calibration in air
  • Two spare membranes included as standard
  • Hard carrying case and instructions provided
    • SKU
  • Manufacturer
    Hanna Instruments Ltd
DO Range
0.00 to 45.00 mg/L; 0.0 to 300.0% saturation
DO Resolution
0.01mg/L (ppm); 0.1% saturation
Accuracy (@25°C)
±1.5% F.S. or ±digit, whichever is grater
Temperature Range
0.0 to 50.0°C
Temperature Resolution
Accuracy (@25°C)
Dissolved Oxygen Calibration
one or two points at 0% (HI-7040L Zero Oxygen solution 500ml) and 100% (in air)
Temperature Compensation
automatic, 0 to 50°C
Altitude Compensation
0 to 4000 m (resolution 100 m)
Salinity Compensation
0 to 80 g/L (ppt) (resolution 1 g/L)
HI-76407/4F polarographic DO probe, internal temperature sensor, DIN connector and 4m cable (included)
Battery Type/Life
1.5 AAA (3)/ approximately 200 hours of continuous use without backlight (50 hours with backlight on)
0 to 50°C (32 to 122°F); RH max 95%
185 x 72 x 36 mm (7.3 x 2.8 x 1.4")
300 g