Optical oxygen meter - OEM module


  • 1-channel OEM device
  • Very compact dimensions: 59 x Ø17mm
  • UART interface, very low power consumption
  • For O2 measurements in gas (%O2) and in liquids (DO)

OEM module for fiber and contactless oxygen sensors

The ultra-compact Pico-O2 is a fiber-optic oxygen meter intended for OEM applications based on the proven high-precision REDFLASH technology from PyroScience. It features very low power consumption, contactless read-out of oxygen sensors through up to 20 mm thick windows.

This OEM module features one optical channel with a PICO-connector, compatible to a variety of fibers and contactless O2 sensors. The optical O2 sensor of your choice must be purchased separately.

Pico-O2 comes with a standard UART interface for integration into custom electronics. In addition, we offer a USB adapter cable PICO-USB including a license for the Pyro Workbench software. When connected to this USB adapter cable, the Pico-O2 can be comfortably configured and operated with a PC using this versatile software.

For temperature  compensated measurements, it is possible to solder a Pt100 temperature probe without connector (TSUB21-NC) to the OEM module. 

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.

LabVIEW library. For customer software solutions, a fully functional LabVIEW library is available in the downloads tab. On request, a respective Python library (in beta version) will be sent to you. Just let us know.

See also our Pico OEM modules for pH and optical temperature sensors. 

Our customers successfully integrated our OEM parts in a variety of different systems for diverse applications. If your application needs a different solution, we can advice you with our yearlong experience in OEM integration. Please contact us for our special OEM support of our engineers. Contact OEM Support

Oxygen Sensors

Choose between our optical fiber or contactless oxygen sensors.

Pt100 temperature probe

Pt100 Temperature Probe


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

Evaluation Kit

For oxygen sensor spots

Required setup for evaluation process

  • PICO-O2, PICO-USB cable and OXSP5
  • PICROD3 fiber rod (ca. 5cm) for read-out
  • All necessary accessories

Exemplary Setup

Oxygen Nanoprobes for Cultivation

This set-up includes:

  • PICO-O2, PICO-USB cable and OXNANO
  • Automatic temp compensation possible

Exemplary Setup

Oxygen Nanoprobes for Microfluidics

This set-up includes:

  • PICO-O2, PICO-USB cable and OXNANO
  • Automatic temp compensation possible

Exemplary Setup


Extend the PICO-O2 oxygen meter with the Modbus analog out module PICO-EXT. This way a Modbus interface and analog outputs of the sensor reading can be utilized. 

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.

Optical Fiber Rod


  • For contactless sensor readout
  • PICO-connector, Ø = 3mm, 51.5mm length
  • To measure sensor spots through 0-20mm thick transparent windows

Fiber for Contactless Readout


  • Fiber diameter Ø = 2mm
  • With PICO-connector, ca. 1m length
  • To measure sensor spots through 0-10mm thick transparent windows

Readout Fiber with Lens


  • Stainless steel tip Ø = 3mm, ca. 1m length
  • With PICO-connector and focussing lens
  • For microfluidic applications

Fiber Rod for Contactless Readout


  • Stainless steel tube Ø = 3mm
  • With PICO-connector, ca. 40mm length
  • To measure O2 sensor spots through 0-10mm thick transparent windows

Optical Fiber Rod with Lens


  • Stainless steel tube Ø = 3, length = 30mm
  • With PICO-connector and focussing lens
  • For microfluidic applications