There is no unified standard for the accuracy of portable electromagnetic concentration meters, and there may be slight differences in model and measurement parameters, with overall fluctuations around ± 0.5% FS - ± 1% FS. Some models can achieve temperature measurement accuracy of ± 0.1 ℃, as follows:
Conventional precision models: such as SMDM-301 explosion-proof electromagnetic concentration meter, its linear accuracy is within ± 0.5%, and the repeatability accuracy of the transmission output can reach ± 0.1% FS; Japan's CEMCO CM-81 electromagnetic concentration meter, the accuracy of conductivity measurement is within ± 0.5% FS, and the concentration resolution can reach 0.01%. This type of machine has high accuracy and is suitable for scenarios such as chemical concentration detection that require strict measurement data.
Basic precision model: For example, MDM-25A portable electromagnetic concentration meter, with a repeatability of ± 1% FS for conductivity measurement and a temperature measurement error of ± 0.1 ℃± 1 character; The conductivity and temperature measurement errors of the WDD-IV-B electromagnetic conductivity concentration analyzer are both 2%. This type of model can meet the requirements of conventional concentration monitoring, and is very suitable for scenarios such as basic inspection in ordinary chemical production.
Overall, the core concentration related measurement accuracy of most mainstream portable electromagnetic concentration meters is concentrated at ± 0.5% FS, with a few basic models or models adapted to simple scenarios having an accuracy of ± 1% -2% FS. The temperature measurement accuracy is generally maintained at around ± 0.1 ℃ - ± 0.2 ℃, which can further ensure the stability of concentration measurement in different temperature environments through temperature compensation function.