Online membrane dissolved oxygen analyzer-Fornitore globale

Room 1606, AVIC International Building, No. 579 Qianjin East Road, Kunshan Development Zone, Jiangsu Province

Chemical film dissolved oxygen

Dissolved oxygen is the measurement of the amount of oxygen dissolved in an aqueous solution. Using the principle of polarographic measurement, the solubility value depends on the temperature, pressure, and salinity of the aqueous solution. The instrument adopts LCD display for measuring and displaying DO value and medium temperature value, with analog signal and digital signal output as well as control function. Dissolved oxygen (DO) is an indicator for evaluating the self purification capacity of water bodies. A high dissolved oxygen content indicates a strong self purification ability of the water body; On the contrary, it means that pollutants in the water are not easily oxidized and decomposed, and anaerobic bacteria will multiply in large numbers, causing the water quality to become foul smelling. Widely used in industries, agriculture, scientific research, environmental protection, and other fields.

Ø Performance characteristics

·The principle of polarographic measurement is sensitive, stable, and reliable;

·Special film coating technology, eliminating impurities and interference, anti pollution;

·Can display dissolved oxygen in mg/L ppb、ppm、% Different display modes;

·Intelligent module self diagnostic technology, error alarm display;

·Long term stable and reliable use, easy maintenance;

·High precision automatic temperature compensation system;

·Multiple signal outputs, alarm settings, typical dosing control;

·LCD display, with a beautiful and exquisite appearance;

·There are various installation methods and easy maintenance.

Ø Application Fields

Wastewater treatment: Measurement and regulation of oxygen in activated sludge tanks to achieve high efficiency in biodegradation processes.

Hydrological monitoring: measuring O in rivers, lakes, and oceans₂Quantity, control water quality.

Aquaculture: Monitoring and regulating oxygen content in water tanks to maintain optimal ecological and growth conditions.

Ø Test performance

Measurement range: 0-20mg/L

Accuracy: ± 0.02 mg/L

Resolution: 0.01 mg/L

Calibration: Factory calibration, can be compared and verified on-site

Temperature compensation: automatic temperature compensation

Display: LCD liquid crystal display

Ø Signal output

Analog output: 4-20mA (four wire system), high load 750W

Switch output: 2 sets of relays, capacity AC230V/5A

Digital interface: RS485 (ModBus protocol)

Ø Power supply

Power supply: AC220V ± 10%, 50Hz (optional DC 24V)

Ø Physical properties

Material: The transmitter is made of ABS

The sensor is made of polyester and epoxy resin

Connection method: Upper and lower 3/4 NPT external thread

Installation methods: bracket insertion, circulation, insertion

Cable length: 10 meters (can be extended up to 20 meters)

Ø Environmental performance

Protection level: transmitter IP65

Electrode IP68

Working temperature: transmitter -20~55 ℃

Electrode 0~60 ℃

Environmental humidity: Relative humidity ≤ 85%

Work pressure: ≤ 0.3MPa