Introduction of equipment for monitoring dissolved oxygen
The fluorescence method of dissolved oxygen meter is based on the principle of fluorescence quenching. The blue light irradiates the fluorescent substance to excite the fluorescent substance and emit red light. Because oxygen molecules can take away energy (quenching effect). Therefore, the time and intensity of the excited red light is inversely proportional to the concentration of oxygen molecules. By measuring the phase difference between the excitation red light and the reference light. And compare with the internal calibration value. Thereby the concentration of oxygen molecules can be calculated. In the past 50 years, the amperometric and polarographic methods have been used to measure dissolved oxygen. This method has played a very important role in monitoring the dissolved oxygen in municipal and industrial wastewater. However, traditional electrochemical methods use membranes, electrodes and electrolytes. The dissolved oxygen monitor adopts the latest digital integrated circuit technology and international detection technology to design a brand new intelligent handheld detector.
This will cause many problems. Even for regular maintenance. Still can not get accurate measurement results. A portable dissolved oxygen meter developed and designed by our company. It adopts the latest digital integrated circuit technology and international testing technology to design a brand new intelligent handheld tester. The detector is mainly used in laboratories, aquariums, aquaculture, rice fields, swimming pools, etc. It is specially designed for the convenience of users to carry to the scene. The instrument is divided into two parts: sensor and electronic unit. The sensor adopts extremely general type coated dissolved oxygen electrode. The electronic unit uses the detection circuit designed by the digital chip of a major international manufacturer. Added digital tube backlight display. The readings can be displayed in real time. Clear readings can still be made in low light conditions.
Functional characteristics of portable dissolved oxygen meter
1. The upgraded model uses fluorescence probes, no need to change membranes and frequent calibrations. Long-term maintenance-free, sensitive and waterproof probe.
2.0-40℃ automatic temperature compensation, the temperature will have a certain influence on the measurement. If the accuracy requirement is higher, the influence is greater, and temperature compensation can reduce this influence.
3. Intuitive data display, large viewing angle and clear writing. The character size is moderate, and it can be cleaned and used in the daytime environment with backlight and high light. Quick view of the value, accurate data and many other advantages.