You are bound to encounter two terms associated with sensors and some loads: ‘NPN’ and ‘PNP’. You must understand the relationship between the field device and the control module in order to choose and install components properly when needed.
March 09, 2022 by David Peterson
A typical control system uses PNP sensors and tends to be easier to visualize. For opposite polarity systems, the NPN sensor is the only compatible sensor type. Learn more about NPN sensors, including characteristics and uses.
September 19, 2020 by David Peterson