Ph automatic control instrument

In industrial automation sites, especially some chemical sites, the ph value is a particularly important parameter. In many occasions, the ph value of the medium in the process must be monitored, and the ph value needs to be controlled within a stable range. In the past, the work of controlling the ph value was often achieved manually, which consumed a lot of manpower and material resources. However, in recent years, with the development of our automated instrumentation, only a ph automatic control instrument is needed. Real-time monitoring and control of the ph value can be realized.　　 Although there are many ph automatic control instrument manufacturers on the market at present, domestic or foreign, due to different technological developments, the product quality and product prices of the ph automatic control instrument on the market vary greatly. Therefore, if you want to know or buy, you can refer to some manufacturers and choose the most suitable ph automatic controller based on your own on-site working conditions and economic conditions. The prerequisite for all this is that you have to understand the product yourself. Now let the editor give you a general introduction about the product knowledge of the ph automatic control instrument.　　 is the principle first. The Ph automatic control instrument works on the principle of a galvanic battery. The electromotive force between the two electrodes of the galvanic battery is based on the Nerns's law, which is related to the properties of the electrodes and the concentration of hydrogen ions in the solution. There is a corresponding relationship between the electromotive force of the primary battery and the hydrogen ion concentration, and the negative logarithm of the hydrogen ion concentration is the pH value.　　 is followed by application occasions. Ph automatic control instrument is one of the intelligent online chemical analysis instruments, which is widely used in continuous monitoring of PH value in solutions such as thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water.　　 Next is the characteristic. The Ph automatic controller has the following advantages.　　1. First of all, the Ph automatic control instrument replaces the original manual periodic measurement. It can monitor the ph value of the current solution in real time, and can be connected to a control or recording device for action control or record real-time ph value.　　2, Ph automatic control instrument can not only record the ph value, but also record the orp value, temperature value, and simultaneously perform upper and lower limit control, 4-20mA transmission output, or RS485 communication function.　　3. There is an industrial control watchdog to ensure that the instrument will not crash.　　4, has good waterproof and moisture-proof performance　　Finally, there are parameters and selection. The first is the pH measurement range. Generally, the measurement range of 0-14 is common in the market, but some of the rarer ones are the range of 2-12, or the large range of -2-16.　　 Next is the accuracy requirement. Generally, the accuracy of the Ph automatic control instrument on the market is 0.02PH, and the resolution is 0.01PH. In terms of transmission output, the general products on the market will have 4-20mA output, and some manufacturers' products can do RS485 communication. Then there is power supply. Generally, the common 220V power supply on the market is used for power supply, but some manufacturers can also provide 24V power supply, which is more convenient in some industrial occasions. Finally, the relay is a very important module for pH control. Generally, there are two sets of relay outputs, so that the control of adding acid or alkali can be carried out.　　 In summary, it is the principle, application, characteristics and parameter selection of the Ph automatic control instrument. I believe that after reading it, you must have a general understanding of the Ph automatic controller, right? There are more of the Ph automatic controllers in the market currently, which are the MIK series of Ph automatic controllers. If you want to know or purchase, it is recommended to look for this directly. The series is enough, it has basic models, upgraded models, high-end models, wall-mounted models, etc. I believe there will be something that meets your requirements.