Measuring water PH instrument

PH instruments are divided into experimental and online types. With the vigorous development of the national economy, the frequency of using such products in industry or scientific research units has become more and more widespread, and the requirements for such products have become more stringent. Edit today to share with you about the PH automatic measuring instrument.　　PH: 　　The hydrogen ion concentration index (hydrogen ion concentration) refers to the ratio of the total number of hydrogen ions in the solution to the total amount of substances. It is generally called 'pH'PH' describes the degree of acidity and alkalinity of the aqueous solution, expressed by the pH value. In the thermodynamic standard condition, the aqueous solution with pHu003d7 is neutral, the pH<7 is acidic, and the pH>7 is alkaline.　　The pH range is between 0 and 14, which is only suitable for dilute solutions. The pH of the solution with hydrogen ion concentration or hydroxide ion concentration greater than 1mol/L is directly expressed by concentration. PH definition formula The definition formula of pH is: 　　Industrial site: 　　After you have a basic concept, you can introduce to you——PH/ORP tester is one of the intelligent online chemical analysis instruments, which is widely used in thermal power, Continuous monitoring of PH value or ORP value and temperature in chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water solutions. This controller can be used in conjunction with various electrodes.　　 PH automatic measuring instrument, currently on the market is mostly an online multi-function controller to use the electrode corresponding to the occasion, it is extremely smart and convenient to use, in popular terms, the electrode is immersed in the measured solution. Pay special attention to electrode selection. The electrode itself is a consumable, and its material structure is relatively fragile. The composition of the solution on the north side must be clarified. 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. The signal and function of the corresponding controller output are used on the electrode Pay special attention before: 　　 remove the electrode protective cap, align the instrument interface and rotate it clockwise to tighten it slightly (excessive force is not available), turn on the power switch, insert the electrode into the solution to be tested, the instrument displays the pH value of the solution. To lock the number, set the switch to lock the reading. After the measurement is completed, turn off the power, release the lock, remove the electrode, and put on the electrode protective cover (the protective cover contains potassium chloride protective solution). 2. Instrument standard: The instrument has been calibrated when it leaves the factory. If it is re-enabled after being left unused for a long time and in other cases where calibration is required, calibrate before measurement. Refer to the instruction manual '4. Instrument Standards' for the calibration method. Application: 　　 Generally in medium and large sewage treatment plants, in the 1990s, some imported foreign brands, such as E+H, Mettler, Hash, etc., were mainly used. With the improvement of domestic industrial water products, domestic Some of the manufacturers have 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.