PH value measuring instrument

With the vigorous development of the national economy, the path of industrial development at the expense of the environment is unsustainable, and the government has also strengthened environmental protection requirements and monitoring. This involves many parameters that need to be tested, such as acid-base PH, dissolved oxygen, ORP, etc. So the editor today will share with you about the PH tester. PH meter is divided into experimental type and online type, so today we will start with the precautions when using online PH meter.　　 Before starting, we first need to understand what is pH? pH is a value that measures the pH of an aqueous solution, also known as hydrogen ion concentration index, acid-base value, and is a scale of hydrogen ion concentration in a solution. A pH value of 7 is neutral, and a value less than 7 is acidic. The smaller the value, the stronger the acidity; the value greater than 7 is alkaline, and the larger the value, the stronger the alkalinity.　　On-line: On-line pH tester is a highly intelligent on-line continuous monitor, which consists of two parts: sensor and secondary meter. It can be equipped with three-composite or two-composite electrodes to meet various applications. Equipped with pure water and ultrapure water electrodes, it is suitable for pH measurement of water with conductivity less than 3μs/cm (such as chemical feed water, saturated steam, condensed water, etc.).　　 Application: 　　 PH meter is a kind of water treatment equipment, and any instrument product has a certain service life. The same is true for the PH meter. In the process of use, sometimes it fails. When the pH meter fails, first check whether the electrode matched with the instrument is faulty. The method is: if there is a spare PH electrode, you can replace the PH electrode. The spare electrode can be used to check whether the circuit of the pH meter (PH meter) is faulty. PH meter 1 Please do not put the electrode of the PH meter or the ORP electrode directly into the water. Use the electrode mounting bracket (self-made). It can also be screwed directly onto the pipe.　　2 Before installing the PH meter electrode, you must use the raw material tape (3/4 thread) to do a waterproof seal to prevent water from entering the PH or ORP electrode, causing the electrode cable to short-circuit.　　 After connecting the electrode of the 3 PH meter to the meter, please power on the industrial online pH meter to warm up for 30 minutes before performing calibration.　　 When performing calibration on the working electrode of the 4 PH meter, it should be noted that the electrode of the pH meter should not be placed flat, but should be placed vertically in the standard solution. PH/ORP measuring instrument is one of the intelligent online chemical analysis instruments, which is widely used in the continuous PH value or ORP value and temperature in solutions such as thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water. monitor. This controller can be used in conjunction with various electrodes. Key parameters and specifications of the acid-base tester: 　　 1. Confirm the use occasion and medium 2. Measure the temperature of the medium 3. Corrosive 4. The specific city of the medium 5. Installation method 6. Corresponding controller output signal and functional application aspects: Generally in medium and large sewage treatment plants, in the 1990s, some foreign imported brands, such as E+H, Mettler, Hash, etc., were mainly used. With the improvement of domestic industrial water products, some domestic manufacturers Also gradually entered this market. For example, Kaidi has done a good job in environmental protection and has one-stop service, which has been recognized by a large number of customers and peers.
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