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Retractable Fiber Oxygen Microsensor

OXR50

  • Retractable fiber 230µm in diameter
  • 50-70µm sharp sensor tip
  • Works in gas (%O2) and liquids (DO)
  • No oxygen consumption
  • Negligible drift, >3 years shelf time

The fiber-optic oxygen sensors from PyroScience feature no oxygen consumption, no stirring sensitivity, an extremely long shelf time, resistance to corrosive environments (e.g. seawater) and are suitable for multiple applications in gas, water and aqueous samples.

This fiber-optic microsensor consist of an optical fiber (230 µm) with a sensor tip diameter of approximately 50-70 µm. Microsensors are perfectly suited for measurements in small samples and for profile measurements (e.g. in sediments, soils, plant tissue, biofilm) with high spatial resolution (microprofiling).

Typical applications:

  • Insertion through septa
  • Dissolved Oxygen in Water
  • Measurements in small volumes
  • Microprofiling in semi-solid samples like sediments, biofilms or soils (non-phototrophic, freshwater), gels, agglomerates

Standard range. This sensor is specified for an optimum measuring range of 0 to 500 hPa oxygen (0 -250% air saturation). However, without specifications, it is possible to measure in up to 1 bar pure oxygen/100% oxygen saturation/100% O2. For detailed specifications, see the respective pdf file in the Downloads tab.

Retractable fiber. The actual sensor tip is surrounded by a 40 mm long syringe needle and can be moved out with a unique 4-step sliding mechanism. When retracted into the needle, the sensor tip is protected giving maximum protection while handling the sensor or while penetrating packages or a septa. The complete sensor is resistant to corrosive environments (e.g. seawater), as all metallic parts are made of stainless steel.

ST-connector. This connector is our standard sensor connector for PC-operated and handheld FireSting devices.

Easy calibration. A simple ambient air calibration can be performed with a few clicks (<1 minute for equilibrated setup). For precise oxygen measurements close to 0% we also offer easy-to-use calibration capsules (OXCAL). Simply dissolve the content of one calibration capsule in 100 ml distilled water, wait 10-15 minutes, perform the 0% calibration and start measurements with a calibrated sensor. For detailed calibration recommendations refer to the manual in the downloads tab.

Standard stock item. This item is typically in stock and small numbers can be shipped quickly. This does not apply for larger amounts, which ship with standard delivery time.

Top seller. This product is one of our top sellers and can be used for multiple and versatile applications.

Applications. To get an overview of potential applications and to see our sensors in action, please visit our Applications site!

Sensor Versions. There are further versions available of this sensor type.  Please use the filter function or the inquiry form to find the suited sensor version for your application.

0% O2 Calibration Capsules 

OXCAL

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

Every PyroScience oxygen meter with ST-connector is compatible with this sensor. Use this link to get a list of all compatible meters. Select additional requirements to find the optimal meter for you and your application!

 

FSO2-1 + OXR50

Choose the one channel oxygen meter FireSting O2 with the retractable fiber oxygen microsensor OXR50.

  • Good value
  • Ready to go lab setup

FSGO2 + OXR50

Choose the pocket oxygen meter FireSting GO2 with the retractable fiber oxygen microsensor OXR50.

  • Stand alone logging
  • With battery and display

FSPRO-4 + OXR50

Choose the multi-analyte FireSting pro (4 chan.) with the retractable fiber oxygen microsensor OXR50.

  • 4 freely configurable optical channels
  • + Additional pH sensor support