Underwater OEM Oxygen Meter


  • 1-channel underwater OEM device
  • A broad range of different compatible sensors
  • Compact dimensions 59 x Ø17 mm
  • Very low power consumption
  • UART interface

Underwater OEM Oxygen Meter - PICO-O2-SUB

The OEM module Pico-O2-SUB is a fiber-optic oxygen meter for integration into custom-made underwater housings. It consists of a PICO-O2 oxygen meter combined with a pressure stable optical connector (optical feed-through). It can be used for many different applications like water column and sediment profiling, eddy covariance studies, etc.

The Pico-O2-SUB is easy to mount and can also be used to retrofit existing underwater equipment since its thread is compatible to some of the most popular deep-sea connectors. The titanium connector is open face pressure stable up to 4000 m water depth (400 bars). Pressure tests after integration are highly recommended. It is typically mounted in the lid of pressure cylinders.

Pico-O2-SUB offers a standard UART interface for integration in custom electronics. In addition, we offer an USB adapter cable PICO-USB including a license for the Pyro Workbench software. When connected to this USB adapter cable, the Pico-O2-SUB can be comfortably configured and operated with a PC using this versatile  software. If analog output is required we offer the FSO2-SubPort.

Optical channel. This meter features one optical channel with a SUB-connector, compatible to a broad range of optical sensors. The optical sensor of your choice must be purchased separately.

Innovative REDFLASH technology. The REDFLASH technology from PyroScience is based on the unique analyte-sensitive REDFLASH sensor materials. The REDFLASH sensor materials are excitable with red light and show an analyte-dependent luminescence in the near infrared (NIR). The REDFLASH technology impresses by its high precision, high reliability, low power consumption, low cross-sensitivity, and fast response times. The red light excitation significantly reduces interferences caused by autofluorescent samples. Further, the NIR detection technology significantly reduces interference with ambient light, known from the old blue-light techniques.

Oxygen Sensors with SUB-connector

Every PyroScience oxygen sensor with a SUB-connector is compatible to this meter. Select additional requirements to find the optimal fiber, cap or flow cell sensor for you and your application!


Exemplary Setup


This set-up includes:

  • PICO-O2-SUB with USB cable
  • Accessories

Exemplary Setup


Common setup consists of PICO-O2-SUB together with the ultra-high-speed OXR430-UHS-SUB oxygen sensor.

Exemplary Setup


This set-up includes:

  • PICO-O2-SUB with USB cable
  • Accessories

0% O2 Calibration Capsules 


For recommended 0% O2 calibration of optical oxygen sensors. Each capsule results in 50mL calibration solution (PU=10).

USB Interface Cable


USB interface cable for evaluation of PICO-O2, PICO-PH and PICO-T, incl. versatile logger software for easy setup and calibration



Modbus analog out module for the ultra compact optical PICO OEM modules.

Pt100 Temperature Probe


  • Flexible Teflon-coated temperature probe
  • With no connector (-NC), for soldering
  • Tip and cable are completely submersible in water

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