YSI EXO Optical Dissolved Oxygen Smart Sensor
YSI EXO Optical Dissolved Oxygen Smart Sensor


YSI EXO Optical Dissolved Oxygen Smart Sensor

The EXO Optical Dissolved Oxygen Sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors. Complete calibration in less than 15 minutes using EXO's suite of smart sensors and intuitive Kor Software. This sensor provides optical dissolved oxygen measurements as well as DO %.
  • 0 to 50 mg/L measurement range
  • T63<5 sec response time
  • ±0.1 mg/L or 1% of reading accuracy from 0 to 20 mg/L

Compact and Accurate
The EXO platform offers a completely new approach - highly accurate, quick-response sensors in a small, easy-to-deploy and easy-to-maintain package. Gone are large and complicated sensor arrangements requiring complex integration.

Smart Probes
All EXO sensors have onboard memory and processing, allowing users to easily calibrate and configure sensors at one location and distribute to various field sites. Smart sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

Smart Ports
Wet-mateable connectors allow for swaps in wet conditions, while the smart ports shut down any excessive current draws to prevent damage.

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment


Connector Yes
Desktop Software Compatible Yes
Digital / Digital Sensors Yes
Equipment used with EXO1, EXO2
Medium Fresh, sea or polluted water
Monitoring Yes
Operating Temperature -5 to +50°C
Parameters Measured DO

0 to 200%: ±1% of reading or 1% saturation, whichever is greater
200 to 500%: ±5% of readings, relative to calibration gasses

0 to 20 mg/L: ±0.1 mg/L or 1% of reading, whichever is greater
20 to 50 mg/L: ±5% of reading, relative to calibration gasses

Response Time T63<5 sec
Sampling Yes
Storage Temperature -20 to +80°C
Unit of Measure % saturation, DO % local, mg/L
User Calibratable Yes

1 Year - Optical DO membrane cap

2 Years - Optical sensor base

Waterproof Yes

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