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Robust Oxygen Probe

  • Optical oxygen sensor
  • Robust sensor tip 3mm in diameter
  • Original REDFLASH-technology
  • Works in gas (%O2) and in liquids (DO)
  • No oxygen consumption
  • Stainless steel
  • >3 years shelf time
  • Negligible drift
  • Trace oxygen versions available

This robust oxygen probe is based on optical detection principles (REDFLASH technology). It measures oxygen in gaseous samples (oxygen gas) as well as in liquid samples (dissolved oxygen, DO). The sensor tip is enclosed by a stainless steel tube 3 mm in diameter and 30 or 100 mm in length. The complete sensor tip including its cabling can be submersed into water.

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


Compatible oxygen meters

FireStingO2 (FSO2-x)
FireStingGO2 (FSGO2)
FireStingO2-Mini (FSO2-MINI-ST)

Normal Range Versions

Item No. Description
(Tip Diameter / Length)
Response
Time (s)**
Pricing
in EU*
OXROB3 Oxygen Probe
(3mm / 30mm), 2m cable
<15 s (liquid)
<7 s (gas)
240 €
OXROB10 Oxygen Probe
(3mm / 100mm), 2m cable
<15 s (liquid)
<7 s (gas)
240 €
OXROB3-CL4 Oxygen Probe
(3mm / 30mm), 4m cable
<15 s (liquid)
<7 s (gas)
270 €
OXROB10-CL4 Oxygen Probe
(3mm / 100mm), 4m cable
<15 s (liquid)
<7 s (gas)
270 €

Trace Range Versions

Item No. Description
(Tip Diameter / Length)
Response
Time (s)**
Pricing
in EU*
TROXROB3 Trace Oxygen Probe
(3mm / 30mm), 2m cable
<20 s (liquid)
<3 s (gas)
240 €
TROXROB10 Trace Oxygen Probe
(3mm / 100mm), 2m cable
<20 s (liquid)
<3 s (gas)
240 €

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

** Typical response times for 90% signal change (T90).
     For liquids: measured for the transition from air into a stirred solution of 1% Na2SO3.

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 10,000,000 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, short-term application in diluted ethanol, methanol, or isopropanol
Cross sensitivity Other organic solvents, chlorine
No cross sensitivity pH 1-14, CH4, CO2, H2S, any ionic species
Sterilization Short term treatment with 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
Connector ST-plug