DO2 Sensor

  • Simple Maintenance No membranes, fill solutions, cartridges of replacement caps required
  • Extensive Memory Holds over 170,000 recordds in non-volatile memory
  • Fluorescence Sensor Technology Utalizing fluorescence of a stable, immobilized ruthenium - based film matrix
Product Options


Here at RS Hydro we have introduced the INW DO2 Sensor to our expanding range of dissolved oxygen equipment.This sensor is the next generation in oxygen sensing, providing precision optical transmission and detection to measure oxygen concentration in the fluid outside of the sensor. The slim 1.66”diameter body fits easily in to 2 inch wells.

The convenient feature of the INW DO2 Sensor is it does not require frequent calibration has no requirement for membranes, fill solutions, replacement caps or cartridges resulting in a very simple to use piece of equipment.

Complete with integrated datalogger and Aqua4Plus software results in the INW DO2 Sensor providing convenient and high quality data, with the capacity to hold over 170,000 records in the non-volatile memory.

Manufactured by: INW
Model: DO2 Sensor

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Dam discharge monitoring aquaculture
Leachate monitoring (landfill)
Long-term surface water monitoring
Monitoring remediation performance
Municipal and industrial water treatment facilities


Probe Diameter 1.66�????�???�??�?�¢?? (4.22 cm)
Tube Material Acetal & 316 stainless steel or
Probe Material Epoxy, polyurethane, and PVC
Wire Seal Material Fluoropolymer and PTFE
Submersible Cable Polyurethane, polyethylene,
or FEP available
Terminating Connector Available
Communication RS485 Modbus® RTU
Direct Modbus Read Output 32-bit IEEE floating point
Internal Math 32-bit floating point
Operating Temp. Range 0° C to 55° C
Storage Temp. Range1 -40° C to 80° C
Memory 260,000+ records
Log Types Variable, user-defined,
logarithmic, profiled
Programmable Baud Rate 9600, 19200, 38400
Logging Rate 8x/sec maximum
Software Complimentary Aqua4Plus or
Networking 32 available addresses per junction
w/ batching capabilities (up to 255)
File Formats .xls / .csv / .a4d
Measuring Range 0 - 25 ppm
Accuracy 1% of reading or 0.02 ppm �?????�????�???�??�?�¢??
whichever is greater
Sensitivity / Resolution 0.01 ppm below 4.00,
0.1 ppm above 4.0
Stability 0.01 ppm
Repeatability 0.01 ppm
Sensor Drift Less than 1% per year
Temperature Range 0° C to 55° C
Response Time 95% in less than 60 seconds
Maximum Pressure 100 PSI
External Power Pack Required 9-15VDC