THE Logoscreen 500 Aqua paperless chart recorder from Practical Control Solutions has been specially designed for water treatment applications.
The input signals can be standard current or voltage signals, temperature sensors and, now, special measurement variables such as pH value, redox (ORP) potential, chlorine, chlorine dioxide, ozone and conductivity, can be used as well.
An innovative feature is that sensor calibration procedures are built into the instrument. For example 1, 2 or 3-point pH calibration with automatic temperature compensation is possible.
Similarly, conductivity, chlorine and ozone, etc., calibration procedures are contained within the recorder.
A calibration and sensor-ageing log is kept. Evaluation of the electrode condition is also displayed in plain text.