Water Quality System (WQS)
Field & Laboratory Meters
  • pH, SCT, DO & BOD, Multi-parameter Testing
Environmental Monitoring Systems (EMS)
Multi-parameter Water Quality Sondes
  • Sampling, Logging& Profiling

Integrated Systems & Services (ISS)
Environmental Monitoring Modules
  • Buoy& Floating Platforms, Profiling Systems, EcoMapper AUV

WQS_Handheld Field Instrument

ProODO Handheld Optical Dissolved Oxygen Meter


The YSI ProODOTM handheld dissolved oxygen meter provides extreme durability for measuring DO with optical, luminescent based technology for field or lab.


The YSI ProODO dissolved meter with optical oxygen sensor utilizes the ODO® technology in order to take a dissolved oxygen measurement. There is a lot of information available recently about dissolved oxygen technologies among optical, polarographic, and galvanic. Optical DO definitely has advantages in certain applications.  We invite you to read on to learn more about the YSI ProODO instrument.


Field Worthy
The ProODO instrument meets the demands of true field work. The instrument is rated to IP-67 standards even without the battery cover on. In-house testing procedures also include 1-meter drop tests from all angles to ensure expected field-durability. Other tough features include:

  • 3-year instrument warranty and a 2-year cable and probe warranty
  • Optical dissolved oxygen
  • Military Spec (MS) connectors
  • Rubber overmolded case
  • Field tested cables
  • Rugged, weighted probe guard

The instrument provides versatility with numerous benefits from the following features:

  • 5,000 data-set memory
  • Expanded DO range of 0-500% (0-50 mg/L)
  • OBOD optical, self-stirring BOD probe for the lab
  • Password protection
  • Backlit display and keypad
  • Graphic display with detailed Help visible with polarized sunglasses
  • Detailed GLP data
  • Multiple languages
  • 100 folders and site lists for logging data with user defined fields

Connect any length cable and probe to the ProODO digital series instrument and use the convenient cable management kit to keep everything simple and organized. Convenient features include:

  • Cable options from 1- to 100-meters including a cable management kit on 4-meter and longer cables; laboratory BOD probe
  • Digital based sensors hold calibration data and allow you to easily connect to any ProODO instrument
  • USB and communication saddle included
  • Soft and hard-sided carrying cases
  • Flow cell
  • Cable weight
  • Belt clip
  • Tripod

If you're interested in dissolved oxygen measurement you may also be interested in our Professional Series products Pro20.


Dissolved Oxygen 0 to 200% air saturation ± 1% of the reading or ± 1% air saturation, whichever is greater; 200 to 500% air saturation ± 10% of the reading; 0 to 20 mg/L ± 0.1 mg/L or ± 1% of reading, whichever is greater; 20 to 50 mg/L ± 10% of the reading | Temperature ± 0.2°C | Barometer ± 1.5 mmHg from 0 to 50°C  


RoHS, CE, WEEE, C-Tick, VCCI, IP-67 (waterproof), 1-meter drop test, Made in USA

Connectivity / Communications: 

USB 2.0 for data transfer and user-upgradeable instrument firmware. Communications saddle, USB cable and Data Manager software included.


Metal MS (military spec) waterproof with bayonet lock

Data Management:

5000 data set memory in ProODO with 100 user-defined sites and site names. Data Manager desktop software included.

Desktop Software Compatible:

Data Manager desktop software included. Minimum PC requirements - Windows 2000 with SP4 (minimum) or XP with SP2 (minimum), Vista 7 or Windows 8 | 300 MHz or higher Pentium-compatible CPU | 128 MB of RAM or higher | 80 MB or more of free hard-disk space.

Digital / Digital Sensors:


Equipment used with:

ProODO cable and probe assemblies, ProOBOD

GLP Compliance:

Yes, detailed GLP information is stored and is available to view, download or print


Japanese, Polish, English, Spanish, German, French, Italian, Norwegian, Portuguese

Logging Capabilities:

Single or Continuous

Measurement Range:

Dissolved Oxygen 0 to 500% air saturation, 0 to 50 mg/L | Temperature -5 to 70°C (DO compensation from -5 to 50°C) | Barometer 375 to 825 mmHg | Salinity Input Range 0 to 70 ppt (manual input)


5,000 data sets (data, date, time, user-defined info), 100 GLP files


Yes - Dissolved Oxygen, Temperature, and Barometric Pressure

Operating Temperature:

-10 to 60°C

Parameters Measured:

Dissolved Oxygen with an optical sensor, Temperature, Built-in barometer


Dissolved Oxygen 0.1% air saturation, 0.01 or 0.1 mg/L (auto-scaling) | Temperature 0.1°C | Barometer 0.1 mmHg

Sampling Yes
Storage Temperature:

-20 to 70°C

Unit of Measure: Dissolved Oxygen - % air saturation and mg/L | Temperature - °C, °F, K | Barometric Pressure - mmHg, inHg, mBar, Psi, KPa
User Replaceable:  Yes - cable assembly with built-in probe is replaceable
Warranty: 3-year instrument; 2-year field cables, 1-year sensor cap


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