Microprocessor Controlled pH/Conductivity Measuring System for Low Conductivity Feedwaters

摘要

The system measures the pH of low conductivity water (boiler feedwaters) within + or - 0.05 pH units at 25 C; provides an in-situ calibration facility for the pH sensor, based on conductivity measurements of pure ammoniacal water; ensures the conductivity bridge is within calibration; and displays the pH at 25 C, the conductivity and the temperature of sample water. The system has been designed to function with the minimum of attention.