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OXYGUARD optical oxygen probe

OXYGUARD optical oxygen probe

The OxyGuard optical oxygen probe is a high-precision sensor based on luminescence (optical) technology for measuring dissolved oxygen in water. Designed for reliable use in aquaculture, industrial, or natural environments, it provides stable, fast, and drift-free measurements.

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OXYGUARD LDO Optical Oxygen Probe

  • Maximum depth: Up to 300 m or standard submersible use

  • Outputs: Analog signal (4–20 mA), digital (RS-485/Modbus) depending on configuration

  • Power supply: 12–24 V DC

  • Maintenance: Very low – no membrane, no electrolyte solution, infrequent recalibration

  • Compatibility: Easy integration with OxyGuard Pacific monitoring systems

Advantages:

  • No oxygen consumption – ideal for low-oxygen environments

  • Less sensitive to fouling than electrochemical probes

  • No frequent membrane or electrolyte replacement required

  • Robust, waterproof, and suitable for harsh environments

Models

1
Name

OxyGuard Polaris Optic

P0011070

O2 – mg/l

0.0 ... 23.0
 

O2 – %

0...250
°C -5...+45
Précision

O2 – mg/l

+/- 1%

O2 – %

+/- 1%

°C

+/- 2°C
Câble 7.0 m
Dimension 58 - 59
Weight (kg) 0.2

The optical probe uses a luminescent sensor based on fluorescence: a blue light excites an oxygen-sensitive dye, and the return time of the light is proportional to the oxygen concentration. This method requires neither electrolyte nor frequent membrane replacement, reducing maintenance costs and improving the device’s durability.

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