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Pro20 Dissolved Oxygen Meter, waterproof (Meter Only)

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Modular meters allow configuration to your specific application
  • Combine meter, probes, and cable lengths to meet your needs
  • Handheld meter offers menu-driven software for added convenience
  • Backlit graphic display and keypad
  • Order probes and cables separately


The YSI Professional series provides plug-and-play capabilities to give you a meter with as much functionality as needed. Build your own system by ordering the meter, probe(s), and cables(s) you need without having to purchase additional meters or unnecessary accessories.

Easy-to-use meters feature graphic display with detailed messages and instructions that translate to less time reading manuals. Rugged rubber over-molded case protects meters during use. Meters are IP67-rated and are waterproof, even without the battery lid.

The DO meters accept either classic polarographic or “instant-on” galvanic DO sensors with screw-on membrane caps for ease of maintenance. These meters also feature selectable two-point DO calibration and automatic barometric compensation for greater accuracy.

Specifications & Description

  • Meter Type: Portable
  • Display type: LCD
  • Min Dissolved Oxygen: 0 to 50 ppm
  • Min Temperature (

    ° C

  • Max Temperature (

    ° C

  • Min Temperature (

    ° F

  • Max Temperature (

    ° F

  • Temperature compensation: Automatic
  • Waterproof: Yes
  • Battery: 2 x C batteries (included)
  • Width (cm): 8.255
  • Height (cm): 21.59
  • Width (in): 3 1/4
  • Length (in): 2 1/4
  • Height (in): 8 1/2
  • Description: Pro20 Dissolved Oxygen Meter, waterproof
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