Wireless Ultra-Trace Oxygen Measurement System

OXYBase® UT-Blue

The OXYBase® UT-Blue consists of a robust ultra-trace oxygen probe (limit of detection 0.5 ppmv O2, 0 - 200 ppmv O2 measurement range) with integrated temperature sensor and stainless-steel housing, which is connected to a Bluetooth module. The battery-powered system is controlled wirelessly by smartphone or tablet with the PreSens Wireless Studio app an can be used for wireless gaseous oxygen monitoring in CO2 recovery processes, orbital welding, nitrogen generators or simply whenever measurements of smallest oxygen traces is necessary. The app for wireless oxygen monitoring is available in the Google Play store and Apple App store. The software allows controlling the measurements or calibrating the sensor and offers many additional features. The graphical display of the ongoing measurement gives you quick overview of current oxygen levels. The Bluetooth module together with a data logger, and pressure sensor - for automatic compensation of the oxygen measurements - are integrated in a lightweight water jet protected housing (IP65). Stored measurement data can be downloaded from the instrument to the smartphone / tablet and exported for further analysis.

  • Measurement range of 0 - 200 ppmv O2, detection limit 0.5 ppmv O2
  • Integrated data logger
  • Data transfer to smartphone via Bluetooth
  • Temperature & pressure compensation
  • Battery powered device
  • Water jet protected housing (IP65)
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Ultra-Trace O2 Monitoring in Industrial Processes

Monitoring gaseous oxygen in sensitive or industrial processes has never been so easy. With the OXYBase® UT-Blue you can control oxygen measurements wirelessly from your smartphone or tablet and detect smallest oxygen traces in your CO2 recovery or inertization processes, in nitrogen generators, or orbital welding.


Measurement range* 0 - 200 ppmv O2
Limit of detection* 0.5 ppmv O2
Resolution* 1 ± 0.15 ppmv O2
Response time (t90)** < 10 sec.
Compatibility Gas phase only!
Cross-sensitivity Organic solvents, such as pure acetone, toluene, chloroform or methylene chloride, chlorine gas
Sensor storage stability 5 years provided the sensor material is stored at room temperature in dry conditions and in the dark
Temperature sensor NTC, accuracy < ± 1 °C
Temperature range operation Optimal: 0 °C to + 40 °C
Max.***: 0 °C to + 50 °C
Temperature range storage Optimal: room temperature (+ 20 °C ± 5 °C)
Max.: - 10 °C to + 50 °C
Pressure resistance* 3 bar
Dimensions Probe: length 106 mm, diameter 12 mm, cable length 5 m
Bluetooth module housing: 226 mm (with cable connector) x 95 mm x 25 mm
Material Probe: stainless steel SUS 316 L
Bluetooth module housing: ABS housing (IP65)
Digital Interface Bluetooth Standard 4.2 LE
Internal memory 16 MB internal flash memory (Export via PreSens Wireless Studio)
Power supply 4 x AA batteries (1.5 V) or accumulators (1.2 V)
*at 20 °C, 960 - 980 hPa; humidified gas mixture
**determined changing from 20.9 % oxygen gas to nitrogen 5.0
***after customized calibration


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