Portable Oxygen Measurement System with Wireless Control

OXYBase® WR-Blue

The OXYBase® WR-Blue is a battery-powered, wireless oxygen measurement system controlled by smartphone (Android or iOS app). It consists of a robust wide range OXYBase® probe (max. 0 - 100 % O2, limit of detection 0.03 % O2) with integrated temperature sensor and stainless steel housing, which is connected to a Bluetooth module. 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). The device is controlled wirelessly via smartphone and the PreSens Wireless Studio app. The software allows changing measurement settings, controlling the measurements or calibrating the sensor, and offers additional features like salinity compensation. The graphical display of the ongoing measurement offers quick assessment of oxygen levels. Stored measurement data can be downloaded from the device to the smartphone and exported for further analysis. The app for wireless oxygen measurements is available in the Google Play store and Apple App Store.

  • Measurement range of 0 - 100 % O2, detection limit 0.03 % O2
  • Integrated data logger
  • Data transfer to smartphone via Bluetooth
  • Temperature, pressure & salinity compensation
  • Battery-powered device
  • Water jet protected housing (IP65)
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Oxygen Monitoring in Aquaculture

OXYBase® are the solution to control dissolved oxygen in aquaculture. The robust probes can be connected to control units so ideal water conditions can be assured, thus also helping to increase yield. OXYBase® are real low-maintenance probes, as a used sensor can simply be replaced by changing the OEC at the probe tip.

OXYBase® in Biological & Environmental Research

OXYBase® are long-term stable probes that can be implanted in soil or other samples for prolonged time periods. They are ideally suited for long-term monitoring of e. g. soil aeration processes, which are very critical for plant productivity, or dissolved oxygen measurements in water samples.


Specifications Gaseous & Dissolved O2 Dissolved O2
Measurement range* Optimal: 0 - 50 % O2, 0 - 500 hPa
Max.**: 0 - 100 % O2, 0 - 1000 hPa
Optimal: 0 - 22.5 mg/L
Max.**: 0 - 45.0 mg/L
Limit of detection* 0.03 % O2, 0.3 hPa 0.020 mg/L
Resolution* 1 % O2 ± 0.02 % O2
20.9 % O2 ± 0.1 % O2
0.4 mg/L ± 0.009 mg/L
9 mg/L ± 0.04 mg/L
Response time (t90) < 10 sec.*** < 30 sec.****
Compatibility Aqueous solutions, ethanol, methanol
Cleaning agents containing ClO2 at room temperature
No cross-sensitivity pH 1 - 14, CO2, H2S, SO2, ionic species
Cross-sensitivity Chlorine gas
Organic solvents such as pure acetone, toluene, chloroform or methylene chloride
Sensor cleaning procedure 3 % H2O2, acidic agents (HCl, H2SO4) max. 4 -5 %
Cleaning agents containing ClO2 at room temperature
Sensor calibration Two-point calibration in oxygen-free (e.g. nitrogen 5.0, 1 % sodium sulfite solution) and air-saturated environment (20.9 % oxygen, air-saturated water)
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
Power supply 4 x AA batteries (1.5 V) or accumulators (1.2 V)
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 (data export via PreSens Wireless Studio)
*at 20 °C, 960 - 980 hPa; humidified gas mixture
**after customized calibration
***determined changing from 20.9 % oxygen to nitrogen 5.0
****determined changing from air-saturated water to a freshly prepared 1 % sodium sulfite solution

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