Neal Systems Inc. (NSI) is a company that manufactures and supplies plant instrumentation and process automation products. It offers transmitters and switches, gas and liquid analyzers, power controllers, signal conditioners, paperless graphic recorders, industrial vibration monitoring systems, etc. The company also provides radio and cell modem system installation, equipment calibration, preventative maintenance, instrumentation assistance, and engineering services. NSI caters to pharmaceutical, energy, mining, food and beverage, chemical, and other sectors.