CS4762CD Dissolved Oxygen Sensor

Short Description:

Unlike traditional electrochemical probes, the modern fluorescence-based dissolved oxygen (DO) sensor represents a revolutionary, membrane-free approach to oxygen measurement. Its operation relies on the principle of luminescence quenching rather than electrochemical reduction.
The core of the sensor is a specially designed optode or sensing spot, coated with a luminescent dye (often a ruthenium complex) embedded in a oxygen-permeable polymer matrix. A blue or UV light source from the instrument excites this dye, causing it to emit red light. When oxygen molecules are present, they interact with the excited dye molecules, quenching (reducing) the intensity and duration (lifetime) of this emitted luminescence. The degree of quenching is precisely and proportionally related to the partial pressure of dissolved oxygen. The instrument measures either the intensity or, more commonly and reliably, the phase shift or lifetime of the fluorescence, which is inherently more stable and less prone to drift.

• Shell material: POM
• Measurement range:: 0-20 mg/L, 0-200%
• Pressure range:: ≤0.1 Mpa
• Temperature: 0-50°C
• Temperature compensation:: NTC
• Temperature range: : 0-50°C
• Calibration: : Anoxic water calibration, air calibration
• Connection method: : 4-core cable
• IP rate: IP68