The probes are essential in controlling a water treatment installation. These can be pH, redox or oxygen probes, as well as conductivity, level or pressure probes...
In view of the importance of these measurements, PCA invested in specially trained personnel a few years ago to conduct the calibrations. Besides calibrating the probes, the entire operation of the installation is also inspected: is the flocking OK, are the doses correct etc.
The frequency of intervention depends on the wishes of the customer: this can be 'on call', but most customers prefer fixed intervals.