Industrial pH measurement issues
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Experts: In industrial continuous production, it is necessary to control the pH value. The problem is that the liquid being measured is at a temperature of over 90 degrees; pH meters used to measure such temperatures may become ineffective within a few days. In some cases, cooling can prevent scaling and crystallization, allowing measurements to be taken after such cooling, but in other cases cooling leads to scaling and crystallization, which can cause blockages. Experts, how do you address the need for continuous measurement at high temperatures? I would appreciate your advice!
Didn’t Mettler Toledo set up operations in Haichuan? Ask them; they should have experience in this area
All imported products have a temperature of over 100 degrees
E+H can withstand up to 135 degrees
A pull-out sleeve is used, making it easy to replace
A short period of time is no problem, but I need to keep making measurements; the amount of acid has to be adjusted based on the pH value. Even the Mettler devices can’t perform continuous monitoring
Mettler seems to be 120, ABB is 110, and Emerson says it’s over 100. The service life during continuous measurement at high temperatures is not clearly specified. If your operating conditions prevent cooling down (to below 90°C) due to crystallization, ask the manufacturer if they have any good solutions
I asked Mettler; it’s over 90 degrees, continuous measurement, and the lifespan is short too
Only high-grade materials such as zirconium/titanium/tantalum are needed