Wall mounted integrated fluorescent dissolved oxygen analyzer

The fluorescence dissolved oxygen analyzer adopts an innovative fluorescence method to replace traditional membrane electrodes, without the need to replace membranes and electrolytes, reducing maintenance workload and improving work reliability. It is particularly suitable for harsh working conditions in the field of sewage treatment. In addition, fluorescence sensors do not consume oxygen, so there are no requirements for flow rate and agitation, and they are not affected by substances such as sulfides.

For over 50 years, the current method and polarography have been used to measure dissolved oxygen. This method has played a very important role in monitoring dissolved oxygen in municipal and industrial wastewater. However, the use of membranes, electrodes, and electrolytes in traditional electrochemical methods can lead to many problems, and even with regular maintenance, accurate measurement results cannot be obtained. Innovative new fluorescence technology, without membranes or electrolytes, requires almost no maintenance, has excellent performance, and is easy to use.

The WBXY-DO20AYG fluorescence method dissolved oxygen measuring instrument is based on the principle of fluorescence quenching. Blue light shining on a fluorescent substance excites it and emits red light. Due to the quenching effect, oxygen molecules can carry away energy, so the time and intensity of the excited red light are inversely proportional to the concentration of oxygen molecules. By measuring the phase difference between the excitation red light and the reference light, and comparing it with the internal calibration value, the concentration of oxygen molecules can be calculated. This method is used to measure dissolved oxygen without oxygen consumption, with stable data, reliable performance, and no interference; Installation and calibration are simple. The controller is used to display the data measured by the sensor, and users can display temperature values, dissolved oxygen values, and perform on-site calibration through the interface of the controller.

The entire measurement system mainly consists of two parts: the instrument (touch screen) and the sensor (primary meter). The sensor contacts the measured aqueous solution, and the instrument displays the concentration value and working status of the aqueous solution

Widely used in water plants, power plants, river monitoring, dissolved oxygen monitoring in aquaculture, sewage treatment plants, pharmaceutical factories, hospitals, to accurately measure the concentration of various water samples

Technical Specifications

Measurement range: 0~200ug/L, 0~20mg/L, with automatic range switching

Temperature: -10-130 ^;

Resolution: 0.1 ug/L, 0.01mg/L O.lt);

Accuracy: ug/L: ± 1.0% FS; mg/L: ± 0.5% FS, ± 0.3V;

Temperature compensation: automatic;

Control interface: Two sets of ON/OFF relay contacts, divided into high and low point alarm signals;

Signal isolation output: Optocoupler isolation protection 4-20mA signal output;

RS-485 communication: One RS-485 serial output can set up to 100 instrument numbers, with a maximum distance of 1000 meters, and can be converted to RS-232 for direct connection to a computer

Relay: The hysteresis of the relay can be set arbitrarily;

Relay load: 10A; 220VAC;

Working conditions: ambient temperature of 0-60t, relative humidity of 90%;

Output load: Load<500Ω (0-10mA), load<750 Ω (4-20mA);

Working voltage: 220VAC ± 10%, 50/60HZ (or DC24V);

Shell material: ABS;

Dimensions: 190 * 136.5mm