Which Dissolved Oxygen Meter is better

Which Dissolved Oxygen Meter is better? Find the answer in Guangdong! Dissolved oxygen meter mainly detects the oxygen content in the aqueous solution. Oxygen is dissolved in water through surrounding air, air movement and photosynthesis. Dissolved oxygen electrodes can be used to measure and monitor processes where oxygen content affects the reaction rate, process efficiency, or environment. Dissolved oxygen meter has the characteristics of easy installation, long calibration period (3~4 months), insensitivity to other substances, and can monitor the use of membrane and internal electrolyte. Generally, electrolyte and membrane are replaced every one to two years. Or directly replace the electrode. Which Dissolved Oxygen Meter is better, why should we say Hangzhou this place? The main reason is that Hangzhou is a gathering place for domestic dissolved oxygen meter production. Then I will tell you why the dissolved oxygen meter is good in Hangzhou! 　　 First of all, proper dissolved oxygen is essential for good water quality. All life forms need oxygen. The natural stream water purification process requires proper oxygen content to supply aerobic life forms. If the oxygen content in the water is lower than 5.0 mg/L, it will be difficult for aquatic organisms to survive, and the lower the concentration, the more difficult it is. If the oxygen content is lower than 1-2mg/L and lasts for a few hours, it will cause a large number of deaths of aquatic organisms.　　 Hangzhou Dissolved Oxygen Meter is mainly divided into two types: polarography and fluorescence.　　 1. Polarographic dissolved oxygen meter.　　 At present, most of the dissolved oxygen meters on the market are polarographic analysis instruments. The ppm level can be widely used for continuous monitoring of dissolved oxygen values u200bu200bin solutions such as chemical fertilizers, environmental protection, pharmaceuticals, biochemicals, food and tap water. The ppb level is specially designed for ppb level dissolved oxygen measurement in power plants, boiler feed water and condensate water. It ensures the stability and accuracy of (ultra) low concentrations. Current technologies are very good in terms of measurement performance and use environment. Big improvement. Common dissolved oxygen meters mostly use diaphragm electrodes as transducers, which convert the dissolved oxygen concentration (actually oxygen partial pressure) into electrical signals, which are amplified and adjusted (including salinity and temperature compensation) and displayed by analog-to-digital conversion. .　　 There are two types of practical membrane electrodes for dissolved oxygen meters: Polarography and Galvanic Cell. Polarography: In the electrode, a gold (Au) ring or a platinum (Pt) gold ring is used as the cathode; silver-silver chloride (or mercury-mercurous chloride) is used as the anode. The electrolyte is a potassium chloride solution. The outer surface of the cathode is covered with an oxygen-permeable film. The membrane can be made of breathable materials such as polytetrafluoroethylene, polyvinyl chloride, polyethylene, and silicone rubber.　　 2. Fluorescence Dissolved Oxygen Meter.　　 Fluorescence Dissolved Oxygen Meter is based on the principle of quenching active fluorescence by specific substances in physics.　　The fluorescent material at the front of the sensor is a special platinum metal porphyrin compounded with a polyester foil that allows gas molecules to pass through, and the surface is coated with a black light barrier material to avoid interference from sunlight and other fluorescent materials in the water. The sapphire light window is isolated from the red and blue light sources and photosensitive elements in the watertight titanium alloy housing. The modulated blue light shines on the fluorescent material to excite it and emit red light. Since oxygen molecules can take away energy (quenching effect), the time and intensity of red light excitation are inversely proportional to the concentration of oxygen molecules. We use a red light source synchronized with the blue light as a reference, measure the phase difference between the excited red light and the reference light, and compare it with the internal calibration value to calculate the concentration of oxygen molecules, after linearization and temperature compensation , Output the final value. Judging from the current market practice, the fluorescent method's dissolved oxygen meter is slightly better in terms of service life and accuracy, but the fluorescent method will be more expensive in terms of price. Generally, fluorescence method is mainly used in sewage treatment plants, and it is often used in aeration tanks to monitor oxygen content.　　 Which Dissolved Oxygen Meter is better? In fact, we are not only looking at its price, after all, the dissolved oxygen monitoring is also a more important indicator. When we choose a manufacturer, we still need to look at the scale, reputation and service.
Guangdong Kaidi Energy Technology Co., Ltd. offers a ton of features and capabilities to help you acquire and retain customers, boost sales and manage contacts.
Dazzle your next event with customized level indicator level gauge and to buy best product， only trust Guangdong Kaidi Energy Technology Co., Ltd..
Guangdong Kaidi Energy Technology Co., Ltd. has never compromised on the quality and the services provided to the customer.
Guangdong Kaidi Energy Technology Co., Ltd. has been making a name for itself as a producer of some of the finest in the China, and it has been singing its praises for some time.
Producing with varied technical skills, level gauge can be used in a wide range of applications as customized level indicator.