The circuitry of the CTCII provides drift-free performance, including automatic DC offset compensation and accurate drive voltage, according to the company. Because temperature compensation is crucial to water measurement, the chemical treatment controllers include a highly refined and precise thermocouple circuit. This feature matches the water temperature coefficient as it changes. All models are corrected to 77°F (25°C). Two heavy-duty 10-A output relays, operating on increasing reading, are standard. Bright red/green LEDs indicate readings above or below setpoint values.
Myron L Co., (760) 438-2021