Selection of industrial online pH meters
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The pH meters in use keep breaking down; what brand does everyone use?
Rosemount, Knick, Hach, Kyori
Mettler Toledo, Hash, E+H
This post was last edited by qqgd on 2024-9-6 at 10:47. Proper selection and configuration of online pH meters are very important; it is necessary to seek sales/technical engineers with practical experience in industrial applications for these tasks, and the meters also require proper installation and maintenance. Since it gets damaged frequently, there are most likely two reasons for this: first, the selection and configuration are incorrect or inaccurate ； Second, there are issues with installation, operation, and maintenance. Although a pH meter is not a large instrument, there are still quite a few complex technical aspects associated with it. Providing the supplier with correct and detailed operating conditions and medium characteristics is essential for obtaining a more suitable selection and configuration. If it is a low-budget bidding process and the product with the lowest bid wins the contract, and the winning supplier is a trading company lacking technical capabilities, then what the poster is experiencing is quite normal – it’s hard to get a suitable product at a low price.
It would be better to provide information such as your operating conditions, medium composition, and installation location so that everyone can discuss it. The right product doesn’t necessarily have to be a well-known brand; proper selection, configuration, installation, operation, and maintenance are the basic prerequisites for online analyzers to function properly
In an acidic wastewater environment containing particulate matter, what type do you all recommend?
PH sensors are generally glass electrodes; due to the risk of abrasion caused by particles in wastewater, a bypass branch pipe can be installed, or a flow cell can be used, with the valve adjusted to reduce the flow rate in the bypass and thus minimize abrasion. The electrolyte inside the PH electrode we use is gradually depleted, and it generally needs to be replaced every few months; otherwise, accurate measurements cannot be obtained.
pH is an electrochemical instrument； Both the initial selection and routine maintenance can affect the lifespan of the instrument