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Oxygen Sensors Spots

  • Contactless optical oxygen sensors
  • Autoclavable
  • Original REDFLASH-technology
  • For oxygen measurements in closed containers
  • Works in gas (%O2) and in liquids (DO)
  • No oxygen consumption
  • Negligible drift
  • >3 years shelf time
  • Trace oxygen versions available

Oxygen sensor spots allow contactless oxygen measurements within closed containers through a transparent window (plastic or glass). The sensor spot is fixed at the inner side of the window with e.g. silcone glue (SPGLUE). Several optical fibers and adapters are available for reading out the sensor spots with all types of optical oxygen meters from Pyro Science.

Autoclavable. The oxygen sensor spots OXSP5 are autoclavable at 121°C (SIP).

Trace range versions. Special trace range sensor spots are available for high precision measurements close to 0%O2. They offer about 5x higher resolution compared to the normal range sensor spots. The recommended measuring range is 0-10% O2. However, calibration at ambient air (21% O2) is possible, ensuring straightforward calibration without the need of special calibration standards.

Compatible oxygen meters

Piccolo2 (PICO2)
FireStingO2 (FSO2-x)
FireStingGO2 (FSGO2)
FireStingO2-Mini (FSO2-MINI-ST)
FireStingO2-SubPort (FSO2-SUBPORT) for sensors with underwater connectors (option -SUB)

Available Items

Item No. Description Response
Time (s)**
Pricing
in EU*
OXSP5 Oxygen Sensor Spot (8 pieces)
Ø5 mm, PET foil 125 µm, with optical isolation
<15s (liquid)
<7s (gas)
240 €
TROXSP5 Trace Oxygen Sensor Spot (8 pieces)
Ø5 mm, PET foil 125 µm, with optical isolation
<20s (liquid)
<3s (gas)
240 €

Accessories for FireSting Devices

Item No. Description Pricing
in EU*
SPGLUE Silicone Glue for gluing sensor spots to container walls (ca. 90 ml) 30 €
SPADBAS Basic Spot Adapter (4 pieces) for 0-2mm windows
(needs SPFIB or SPFIB-BARE)
50 €
SPADLNS Lens Spot Adapter for 2-6mm windows (for ST-plugs, needs SPFIB) 50 €
SPFIB Optical Fiber (1m length), ST-plugs at both ends 50 €
SPFIB-CL2 Optical Fiber (2m length), ST-plugs at both ends 60 €
SPFIB-BARE Bare Optical Fiber (1m length), ST-plug + one polished end 50 €
SPFIB-BARE-CL2 Bare Optical Fiber (2m length), ST-plug + one polished end 60 €

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More details…

     

Silicone Glue for Sensor Spots (SPGLUE). This silicone glue can be used for gluing sensor spots (e.g. OXSP5) onto the inner side of the containers, where the oxygen measurement should be performed in. Generally, every transparent silicone glue based on acetic acid can be used for this purpose. The actual delivered brand of silicone glue might differ from the product image.

     
 

Basic Spot Adapter (SPADBAS). Set of 4 basic spot adapters providing precise fixation for the optical fibers PICFIB2 or the optical fiber rod PICROD2 at transparent container walls. The spot adapter should be glued to the window with an appropriate adhesive (e.g. epoxy glue or silicone glue SPGLUE).

     
 

Lens Spot Adapter (SPADLNS). The lens spot adapter provides a precise fixation for the optical fiber SPFIB at transparent containers with a wall thickness of ca. 2-6mm. A flexible re-adjustable cable binder is included, allowing quick positioning e.g. on laboratory flasks. Not applicable if submersed in water.

 

     
 

Optical Fiber (SPFIB). The optical fiber SPFIB is used for connecting the spot adapters SPADBAS or SPADLNS to the optical oxygen meter FireStingO2. There are ST-connectors at both ends. Standard cable lengths of 1m or 2m are available.

 

     
 

Bare Optical Fiber (SPFIB-BARE). The bare optical fiber SPFIB-BARE is used for connecting the basic spot adapter SPADBAS to the optical oxygen meter. It has a straight cut polished fiber end, which has no metallic parts. Therefore, SPFIB-BARE can be used in water baths or salt water applications.

 

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Accessories for Piccolo2 Devices

Item No. Description Pricing
in EU*
SPGLUE Silicone Glue for gluing sensor spots to container walls (ca. 90 ml) 30 €
SPADBAS Basic Spot Adapter (4 pieces) for 0-2mm windows
(for PICFIB2 or PICROD2)
50 €
PICFIB2 Optical Fiber (1m length) for Piccolo2, bare polished end 70 €
PICROD2 Optical Fiber Rod (ca. 40mm length) for Piccolo2, bare polished end, Ø2mm 70 €
PICROD3 Optical Fiber Rod (ca. 50mm length) for Piccolo2, bare polished end, Ø3mm
(not compatible to SPADBAS)
40 €

* Only EU-Prices shown. Contact us for pricing outside EU. Not for resale.

** Typical response times for 90% signal change.
     For liquids: measured for the transition from air into a stirred solution of 1% Na2SO3.

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More details…

     

Silicone Glue for Sensor Spots (SPGLUE). This silicone glue can be used for gluing sensor spots (e.g. OXSP5) onto the inner side of the containers, where the oxygen measurement should be performed in. Generally, every transparent silicone glue based on acetic acid can be used for this purpose. The actual delivered brand of silicone glue might differ from the product image.

     
 

Basic Spot Adapter (SPADBAS). Set of 4 basic spot adapters providing precise fixation for the optical fibers PICFIB2 or the optical fiber rod PICROD2 at transparent container walls. The spot adapter should be glued to the window with an appropriate adhesive (e.g. epoxy glue or silicone glue SPGLUE).

     
 

Optical Fiber (PICFIB2). The optical fiber PICFIB2 (1m in length) is used for connecting the spot adapter SPADBAS to the optical oxygen meter Piccolo2. Applicable for a window thickness of ca. 0-10mm.

     
 

Optical Fiber Rod (PICROD2). The optical fiber rod PICROD2 (ca. 40mm in length, 2mm core diameter) provides a short connection between the spot adapter SPADBAS and the optical oxygen meter Piccolo2. Applicable for a window thickness of ca. 0-10mm.

     
 

Optical Fiber Rod 3mm (PICROD3). For applications with very thick windows (up to 20mm) we offer the optical fiber rod PICROD3 (ca. 50mm in length, 3mm core diameter). Note, that this item is not compatible to the spot adapters SPADBAS, but needs a customized fixation.

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Specifications

Given for 2-point calibrated oxygen sensors at 1013mbar absolute pressure.

Normal range versions hPa %O2 %air sat. mg/L
Optimum measuring range 0-500 0-50 0-250 0-23
Maximum measuring range (not specified) 0-1000 0-100 0-500 0-45
Detection limit 0.2 0.02 0.1 0.01
Resolution at 1% O2 0.1 0.01 0.05 0.005
Resolution at 20% O2 0.5 0.05 0.25 0.025
Accuracy at 1% O2 ±0.2 ±0.02 ±0.1 ±0.01
Accuracy at 20% O2 ±2 ±0.2 ±1 ±0.1
 
Trace range versions hPa %O2 %air sat. mg/L
Optimum measuring range 0-100 0-10 0-50 0-5
Maximum measuring range (not specified) 0-210 0-21 0-100 0-9
Detection limit 0.05 0.005 0.02 0.002
Resolution at 0.2% O2 0.02 0.002 0.01 0.001
Accuracy at 0.2% O2 typ. 2% of reading, but not better than 0.01%O2
All versions
Temperature range 0 to 50°C (specified), -20 to 70°C (not specified)
Minimum lifetime 20,000,000 data points
Application areas Laboratory, industry, research. Not for medical or any other safety-critical applications. Not for application in humans or in food intended for human consumption.
Compatibility Gas-phase, aqueous solutions, ethanol, methanol, isopropanol
Cross sensitivity Other organic solvents, chlorine
No cross sensitivity pH 1-14, CH4, CO2, H2S, any ionic species
Autoclavable A few cycles at 121°C for 15 min (only item no. OXSP5)
Sterilization Ethylene oxide (EtO), 70% ethanol, 70% isopropanol
Cleaning 3 % H2O2, ethanol, soap solution
Storage time >3 years in darkness at room temperature
Calibration Single point, two point calibration
Optical isolation The sensor spots are covered with a final black layer in order to minimize influence of strong external illumination