The TD-4100 XDC General Purpose oil in water monitor is a less expensive version of the industry-standard TD-4100 XDC, and is designed for general purpose areas (non-explosive atmospheres).

It was designed for clean water and dirty water applications, where fouling can be controlled by chemical injection or optional on-board cleaning systems. It utilises a clear tube flow cell to contain the sample water at pressure to prevent oxygen contamination in steam systems, and to return the sample to the process at pressure.

It also uses a unique internal cell condition monitor to alert operations of the need for cleaning or to trigger the optional on-board cleaning system. As with all Turner monitors, it includes a field validation method.