Installation and maintenance of pH meter
The quality of the PH meter depends on the care and maintenance of the PH electrode. The installation and maintenance of the PH meter are very important, so pay attention to it when installing it. Strictly follow the installation instructions and manufacturer requirements, so as to extend the service life of the PH meter and achieve the best results. Effect.
There are generally two ways to install online pH meters: flow-through type and submersible type. Here is a detailed introduction to submersible installation.
Sewage treatment plants generally use immersed installation. Generally, the online pH meter of the sewage treatment plant is installed in the outlet overflow tank of the oxidation ditch. The pH value here is more representative and the water flow is stable, which will not cause any damage to the PH electrode. Big impact.
Regular maintenance of electrodes contributes to the accurate measurement of the meter and extends the service life of the meter. It should be noted that the special cable between the sensor and the transmitter cannot get wet, otherwise the high resistance and low voltage signal of the electrode will not be transmitted to the transmitter.
The bracket for electrode installation should be the original factory bracket, with raw material tape on the thread, tighten it and fix it in the water.
If the electrode is not measuring, the white electrode protective sleeve should be screwed on. The potassium chloride solution in it can keep the electrode glass ball in a moist state, prolong the activity of the glass ball, and extend the service life of the electrode.
Depending on the quality of the sewage, the electrodes should be cleaned every 15 days to about a month. First, spray the attachments with gentle water flow, then soak the electrodes in the cleaning solution for a period of time, and then rinse them with clean water. The sensor holder should also be cleaned. After each wash, calibrate with buffer solution.
