The ContaminationSensor Module Economy (CSM-E) 1220 is a compact and cost-effective online Condition Monitoring module for conditioning the flow rate of hydraulic and lubricating fluids and diesel fuels. It is used together with fluid sensors to measure solid particle contamination, water saturation, and oil ageing. The CSM-E consists of a pump/motor group, air releasing path, and inline sensor installation. Furthermore, the optionally available data storage and network communication module CSI-C-11 makes it possible to upgrade the CSM-E to form a compact, IoT condition monitoring solution for fluids.