Optically displaying measured values - using coloured LED arrays with presetting facility for colour and intensity controlled by timing pulse generator

摘要

When used for the determination of chlorine, pH value and Redox potential during water treatment operations by a combination of, e.g. red and green LED arrays, the display appts. is always controlled by a clock pulse generator operating on a switching cycle which promotes persistence of vision. The equipment is housed in a wall-mounting display console (1) and includes a temp. compensator connectable via an AND-gate. ADVANTAGE - Enables presetting of colour and intensity of light output to suit changes in particular application. Indication of process control within variable tolerance bands conveniently and accurately presented.