YSI EXO pH & ORP Smart Sensor
YSI EXO pH & ORP Smart Sensor


YSI EXO pH & ORP Smart Sensor

The EXO unguarded pH & ORP 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.

Note: This unguarded model is for use with the EXO2 or EXO3 with a central wiper installed. For the guarded version, please see our EXO pH & ORP Smart Sensor (Guarded).

  • 0 to 14 unit measurement range
  • T63<3 sec response time for pH, T63<5 response time for ORP
  • ±0.1 pH unit accuracy within ±10°C of calibration temperature
  • ±20 mV ORP unit accuracy in Redox standard solutions

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 EXO2, EXO1
Medium Fresh, sea or polluted water
Monitoring Yes
Operating Temperature -5 to +50°C
Parameters Measured PH, ORP
Precision ±0.1 pH units within ±10°C of calibration temp; ±0.2 pH units for entire temp range; ±20 mV in Redox standard solution
Response Time T63<5 sec
Storage Temperature 0 to 60°C
Unit of Measure pH units / ORP millivolts
User Calibratable Yes

2 Years - Electronics base
1 Year - Replaceable reagent module

Waterproof Yes

 Inquiry - YSI EXO pH & ORP Smart Sensor