portable dissolved O3 meter

Dissolved Ozone Meter

  • Easy-to-use, portable handheld meter
  • Pre-calibrated dissolved ozone sensors
  • Fast-response (<4.5 seconds), highly accurate sensors
  • Ideal for waste water monitoring and scientific research

The microprocessor-operated measuring instrument has been developed for the fast and accurate in-situ determination of dissolved ozone without any sampling.

The instrument is useful for the laboratory and for simple and fast measurements in the field (e.g. swimming pools, drinking water, chemical industry). The instrument is equipped with an amperometric, membrane covered O3-micro-sensor, which has not to be streamed and with a temperature-sensor. The display shows the concentration of the measured dissolved ozone in mg/l and the temperature of the sample.

The measuring instrument is powered via the included power supply unit and can be operated also with batteries. The RS 232 interface allows to link the instrument to a PC or notebook.

By exchanging the O3-sensor tip against a galvanic oxygen micro-sensor tip, the measuring instrument could be changed fast and simply into a high performance oxygen measuring instrument. Furthermore the instrument is useful to store the calibration coefficients of up to 10 different chemical micro-sensors and to calculate the concentration units by means of the measured raw data. This allows also the fast and simple exchange of sensors and measuring ranges, if required.


related products


the micro-sensor advantage

Compared with the other commercially available so called macro-sensors and compared with the other available high-tech and very expensive instruments (especially optical instruments), the new measuring instrument with amperometric micro-sensor has the following advantages:

1. No streaming of the sensor’s membrane necessary, very low analyte consumption
2. No exchange of membrane or electrolyte for maintenance
3. Very fast response time of the sensor (some seconds for t90%)
4. Analysis without any sampling or adding of chemicals
5. Very low detection limit: down to 0,02 mg/l
6. High accuracy
7. High economic efficiency (no chemical consumption)
8. Measurements also possible in turbid, coloured, muddy and salt containing samples
9. Continuous on-line measurements (not only average measurements of a big volume)
10. High local resolution of the measurements (μm-steps)
11. Immediate display of the ozone concentration (mg/l)


Dissolved Ozone Sensor


feature specification
Measurement Principle Amperometric Clark-type Sensor
Measurement Range 0.2 mg/L to 10 mg/L O3 (linear range) others on request
Accuracy <2%
Resolution > 2 μg/l
Response Time (T90%) 4.5 to 9 seconds
Maximum Measurement Depth 100 m or 10 bar
Operating Temperature -2 °C to 30 °C
Signal Interference H2O2 when > 2% vol. No interference with oxygen or chlorine
Sensor Lifetime 5 to 10 months
Housing Titanium
Polarization Approx. 10 minutes
Power Supply 9 to 30 VDC
Output Linear: 0 to 3 VDC
Connector SUBCONN BH-4-MP
Physical Dimensions Diameter: 24 mm; Length: 235 mm