ProODO Handheld Optical Dissolved Oxygen Meter Only

90-6400-40ProODO Handheld Optical Dissolved Oxygen Meter Only, YSI 626281

The YSI ProODO™ dissolved oxygen 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
  • Digital based sensors hold calibration data and allow you to easily connect to any ProODO instrument
  • USB and communicatiosn saddle included
  • Soft and hard-sided carrying cases
  • Flow cell
  • Cable weight
  • Belt clip
  • Tripod

Data Manager Software - Free!

Data management can become a daunting task over time but with the Data Manager software this task is much simpler and efficient. Download data, configure instruments, and conduct real-time studies easily with Data Manager software. View data graphically or in tabular form and export data as needed to other programs. Data Manager software is a very powerful tool. So powerful in fact, that we give it to you at no charge when purchasing a ProODO . After all, it's all about the data!

When purchasing the ProODO optical DO you will receive the instrument, manual, batteries, communications saddle, USB cable, and Data Manager software. You must order cables separately.


  • Made in USA
  • 5,000 data-set memory
  • Rugged field cables
  • Free - Data Manager software
  • 3-year instrument warranty and 2-year cable and probe warranty


ProODO Instrument General Specifications

Barometer Built-in barometer
Cable Lengths* 1- 4- 10- 20- 30- 40- 50- 60- and 100-m; 
(3.3, 13.1, 32.8, 65.6, 98, 131, 164, 197 and 328 ft)
Calibration DO - one point or two point with a zero % value; 
Barometer - one point
Certifications RoHS, CE, WEEE, C-Tick, VCCI, IP-67, 1-meter drop test, Assembled in USA
Connectivity USB 2.0; communications saddle and USB cable included
Connector MS (military spec) waterproof with bayonet lock
Data Management

Data Manager desktop software included; 100 user-defined folders and site names

Minimum PC requirements;

  • Windows 2000 with SP4 (minimum) or XP with SP2 (minimum)
  • 300 MHz or higher Pentium-compatible CPU
  • 128 MB of RAM or higher
  • 80 MB or more of free hard-disk space
  • USB 2.0
  • Microsoft.NET (installed with Data Manager)
Data Memory 5000 data sets (sensor data, date, time, site and user defined information)
Dimensions 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in x 8.5 in x 2.21 in)
Flow Dependence None
GLP Compliant Yes
Languages English, Spanish, German, French, Italian, Norwegian, Portuguese; Asian language support in the future
Measurement/Logging Modes Automatic and Manual sampling modes/Continuous and Interval logging modes
Power 2 alkaline C-cells; approximately 80 hours - ambient conditions in manual sampling mode
Probe Dimensions 19 cm length (7.5 in); 2.4 cm diameter (0.95 in)
Probe/Sensor Materials The following materials may come into contact with the sampling environment: Xenoy®   PBT Polycarbonate blend, Noryl, Stainless Steel, Titanium, Polyurethane, Santoprene,     Acrylic, Polystyrene
Salinity Input Range 0-70 ppt; manual (automatically compensates for manual input value)
Storage Temperature -20 to 70°C
Typical Response Time 90% in 25 seconds; 95% in 45 seconds
User ID Optional user ID for data security
Warranty 3-year instrument; 2-year cable and probe; 1-year sensor cap
Waterproof IP-67 (even with the battery cover off); floats
Weight with Batteries 475 grams (1.05 lbs)
* Special order cable lengths up to 100-meters in 10-meter increments available.


ProODO System Specifications (Instrument with Cable & Probe)

Sensor Type Range Accuracy Resolution
Dissolved Oxygen (%) Optical (dynamic luminescence quenching lifetime detection) 0 to 500% air saturation 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 0.1% air saturation
Dissolved Oxygen (mg/L) Optical (dynamic luminescence quenching lifetime detection) 0 to 50 mg/L 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 0.01 or 0.1 mg/L (auto-scaling)
Temperature -5 to 70°C ±0.2°C 0.1°C
Barometer 375 to 825 mmHg ±1.5 mmHg from 0 to 50°C 0.1 mmHg

Catalog # Product Description
90-6400-40ProODO Handheld Optical Dissolved Oxygen Meter Only, YSI 626281 $740.00
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