Are there pH meters that can perform long-term online measurements in a medium at 100 degrees Celsius?
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Under normal conditions, in an environment with temperatures of 80 or 90 degrees, the lifespan of electrodes is very short. Since manufacturers are reluctant to adopt cooling measures, it is necessary to conduct measurements in materials at temperatures close to 100 degrees. Have you ever used any effective solutions for this?
I’ve used Mettler models before, and they were also of the intermittent type; even at temperatures over 80 degrees, they would only last 3-6 months. I really don’t know how to choose this time
Since the process doesn’t provide one, equip the device with a temperature reduction unit for measurement purposes. This is how we measure 104-degree deionized water; you should refer to the solution provided by E+H
It’s not that no cooling is provided; it’s just that he doesn’t allow you to lower the temperature. What he wants to measure is the pH value at that specific temperature. Ugh. . .
Which model of electrodes from Hashi can be used in this situation? If you don’t understand, don’t talk nonsense.
This situation is quite difficult to handle. There must be special reasons why the process medium cannot be cooled, but pH electrodes that can operate at high temperatures for extended periods are indeed rare. Also, how long does the long-term use refer to, as mentioned by the original poster? Using it for a week is considered a long period if used for just one day, and using it for three months is only a short period if used for one year. Are there any specific time usage requirements? Some companies have electrodes that can withstand higher temperatures, but their service life is certainly not comparable to that of electrodes used at normal temperatures. Electrodes that can generally tolerate the CIP process can be used for a short period of time at higher temperatures (up to 120 degrees or even higher). Such electrodes can be tried out, but they are quite expensive.
I remember that E+H had a pH meter with a range of 0-138 degrees; the one we used, which is designed for low temperatures, has always worked well
I often see the teacher’s comments; I’ve learned so much. How can one have such extensive knowledge? I’m impressed:handshake