The UPW105 series provides precise measurements of water quality for Ultra-Pure water applications. Measurements can be made in Resistivity or Conductivity units and the temperature is displayed at the same time on a clear backlit alphanumeric display. A trip point is provided with adjustable hysteresis and relay output to give warning when the water quality falls below the preset level.

Temperature Compensation
The UPW105 series features full temperature compensation for the pure water curve and uses concentration compensation to maintain accuracy as the water quality falls. The temperature compensation facility may be turned off if is not required e.g. for USP 23 applications.