DescriptionThe CDH221and CDH222 are ideal for quality control, agricultural industry, water conditioning, beverage, fish hatcheries, laboratory, universities and many other Industrial applications. These microprocessor based digital meters are rugged, portable units which are able to recognize and compensate for electrode offset and slope. The CDH222 also features RS232 output. Overload indication and Data Hold are standard on both units. In addition the CDH222 offers °C or °F selectable, auto shutoff, and TDS measurement.