Search here...
Polaris OxyGuard Dissolved Oxygen Meter (Galvanic Sensor)
General Description
The Polaris OxyGuard is a portable dissolved oxygen meter designed for measuring oxygen concentration (O₂) in water.
It is widely used in aquaculture, laboratory work, environmental monitoring, and water quality control.
Operating Principle
The device uses a galvanic-type electrochemical sensor that produces an electric current proportional to the dissolved oxygen concentration.
-
The sensor contains two electrodes (anode and cathode) immersed in an electrolyte.
-
Oxygen diffuses through a permeable membrane and reacts at the electrode surface, generating an electrical signal.
-
The signal is then converted and displayed in mg/L or % saturation.
Oximeter OxyGuard POLARIS with galvanic probe
Polaris OxyGuard Dissolved Oxygen Meter (Galvanic Sensor)
General Description
The Polaris OxyGuard is a portable dissolved oxygen meter designed for measuring oxygen concentration (O₂) in water.
It is widely used in aquaculture, laboratory work, environmental monitoring, and water quality control.
Operating Principle
The device uses a galvanic-type electrochemical sensor that produces an electric current proportional to the dissolved oxygen concentration.
-
The sensor contains two electrodes (anode and cathode) immersed in an electrolyte.
-
Oxygen diffuses through a permeable membrane and reacts at the electrode surface, generating an electrical signal.
-
The signal is then converted and displayed in mg/L or % saturation.
€0.00
Tax included
Oxygen Meter OXYGUARD POLARIS
Complete set includes:
Probe, battery, storage bag, accessories, and 3-meter cable (other cable lengths available upon request).
Measurement range:
Oxygen: 0.0 to 60.0 mg / l (ppm)
Oxygen saturation: 0.0 - 600%
Temperature: -5.0 - +45°C
Languages: English, German, French, Spanish
Weight with accessories: approx. 1.0 kg
The POLARIS is a portable oxygen meter. It is the best-selling model in commercial fish farming. This device is equipped with a new generation probe and microprocessor electronics. Due to its automatic calibration and automatic self-check, it is very easy to use. The POLARIS measures oxygen saturation in mg / l and % and temperature. All values are displayed simultaneously on the large backlit screen. The devices are extremely robust, waterproof, and floatable.
The POLARIS 2 with recorder, and optionally the POLARIS Link (P0012400) for data transfer to a PC.
|
Models |
1 | 2 |
| Name |
OxyGuard Polaris (NEW) P0011050 |
OxyGuard Polaris (OLD) P0011310 |
|
O2 – mg/l |
0.0 ... 60.0 | 0.0 ... 60.0 |
|
O2 – % |
0...600 | 0...600 |
| °C | -5...+45 | -5...+45 |
| Précision | ||
|
O2 – mg/l |
+/- 1% | +/- 1% |
|
O2 – % |
+/- 1% | +/- 1% |
|
°C |
+/- 2°C | +/- 2°C |
| Câble | 3.0 m | 3.0 m |
| Dimension | 300-240-60 | 300-240-60 |
| Weight (kg) | 0.7 | 0.7 |
Technical Specifications (typical values)
-
Measurement range: 0–20 mg/L O₂ or 0–200% saturation
-
Accuracy: ±0.1 mg/L or ±1% of reading
-
Resolution: 0.01 mg/L
-
Response time (T90): approx. 30 seconds
-
Operating temperature: 0–50 °C
-
Automatic temperature compensation (built-in sensor)
-
Calibration: simple air-saturated water calibration
-
Display: digital, backlit
-
Power supply: AA batteries or rechargeable battery
-
Protection rating: IP65–IP67 depending on model
-
Probe cable: typically 3–10 m, interchangeable
Advantages
- No polarization required (unlike polarographic probes)
- Ready for use immediately after switching on
- Low power consumption
- Rugged and waterproof design
- Easy maintenance (membrane/electrolyte replacement)
- Ideal for fieldwork and fish farming ponds
Maintenance and Calibration
-
Regular cleaning of the membrane to avoid organic fouling.
-
Monthly inspection of the electrolyte and membrane integrity.
-
Air-saturated calibration before each measurement series to ensure accuracy.
Typical Applications
-
Monitoring oxygen levels in aquaculture ponds and tanks
-
Water quality assessments in lakes and rivers
-
Aeration system efficiency and biological respiration studies
