Endress+Hauser
The Liquiline CM442 (photo) is a four-wire, two-parameter transmitter for analytical sensing applications. The device can accept data from two sensors and measure any combination of parameters, including turbidity and suspended solids, dissolved oxygen, pH, chlorine and conductivity. Using one instrument for measuring two process variables saves money and space. Liquiline’s sensor inputs have a digital interface with plug-and-play capabilities, allowing users to interchange sensors quickly for calibration or other purposes. — Endress+Hauser, Inc., Greenwood, Ind.