Dissolved oxygen sensor 4831-Fornitore globale

8th Floor, Building 2, East China Normal University Science and Technology Park, 1038 Jinshajiang Road, Shanghai, China

characteristic:
1. Principle of optical fluorescence quenching measurement based on lifecycle
2. Long term stability
3. No calibration required for over a year
4. Low maintenance volume
5. Compact and lightweight
6. Can be used independently
7. Output format:0~5V，RS232
Dissolved oxygen is an important measurement parameter in the biochemical processes of aquatic environments and is often used as a tracer in marine research. For hypoxic environments, monitoring dissolved oxygen is crucial, such as:
1. Shallow water areas with algal blooms near the coast		2. Aquaculture
3. Fjords or other areas with less water exchange		4. Areas where mining or dredging waste is dumped
The Andra dissolved oxygen probe is based on the fluorescence quenching measurement principle of the lifecycle. It uses platinum porphyrin complex as the fluorescent material, embedded in a breathable fluorescent film, and a black light isolation coating protects the fluorescent material from the influence of sunlight and particle fluorescence in water. One side of the fluorescent film is exposed to the environmental water, and the other side is installed on the optical window of the measurement room. By exciting the fluorescent material on the fluorescent film with blue light, it emits red light. The detector detects the time from the emission of blue light to the release of red light, which is linearly correlated with the dissolved oxygen concentration. After temperature compensation, the dissolved oxygen concentration is obtained. The fluorescence quenching measurement principle based on the lifecycle has the following advantages compared to electrochemical sensors:
1. Minor disturbance impact (does not consume oxygen)		2. Better long-term stability
3. Less affected by pollution		4. Less affected by pressure
5. Measuring the absolute concentration of dissolved oxygen does not require frequent calibration		6. The impact of pressure is predictable
7. Faster response time
		Technical parameters



	Precautions for induction film:
	The standard fluorescent film has an isolation layer to prevent direct sunlight from affecting it, while the fast response fluorescent film does not have this protective coating. When the external light intensity exceeds15000luxThere may be reading errors. To prevent damage from ambient light to the rapid response film, it is recommended to use a standard film without the need for quick readings.


	(1) μM =μmol/l.If you want to obtainmg/L, divided by31.25.
	(2) Salinity variation>1mS/cmSalinity compensation and pressure are required>100mPressure compensation is required.
	(3) Calibration range:0～120%.
	(4) Calibration range:0～36°C.
	(5) Parameters are subject to change without prior notice.