What are the characteristics and functions of self-cleaning electrodes?
Install a device near the pH meter probe that can generate ultrasonic waves to automatically clean the pH electrode. The strength of ultrasound is achieved by adjusting the oscillation frequency of ultrasound. It is installed vertically, with the ultrasonic probe installed below the electrode. We use a combination of ultrasonic cleaning and solution spray cleaning to automatically clean the pH meter electrodes.
What should I do if I don't use electrodes for a long time? Storage and cleaning of glass electrodes for pH meters: short-term: stored in a buffer solution with a pH of 4; Long term: stored in a buffer solution with a pH of 7. The contamination of glass electrode bubbles may prolong the electrode response time. Use CCl4 or soap to wipe off dirt, then immerse in distilled water for one day and night before continuing to use. When the pollution is severe, it can be soaked in 5% HF solution for 10-20 minutes, immediately rinsed with water, and then immersed in 0.1NHCl solution for one day and night before continuing to use.
What are the differences in lifespan and price between domestically produced electrodes and imported electrodes? The lifespan of domestic electrodes is not as long as that of imported electrodes. Under normal circumstances, they can be used for about 2-3 years, while domestic electrodes can be used for 1-1.5 years under normal circumstances, except in special circumstances. But the price of domestic electrodes is cheaper than imported electrodes
How is the pH meter connected to the electrode? Below, let's explain the online pH meters PG-118 and PHG-116 electrodes of Hefei Zhuoer Instrument. First, let's briefly introduce their wiring methods: PG-118 is used with three composite electrodes. When wiring, consider that it also has a temperature compensation wire. First, connect a white transparent wire to the hexagonal column, then connect the thick black wire to the GND screw port, and the remaining two wires are respectively connected to the TEMP screw port (in no order). Finally, connect the two power cables to 0-220V. The connection method of PHG-116 is similar, connecting the white transparent wire to the hexagonal pillar and the black thick wire to the ref. Finally, connect the power cord to 0-220V.
