ProMinent® Sigma/ 1 Metering Pump, 3/4" NPT

Mechanically-actuated diaphragm metering pump with advanced, intelligent features to provide high-levels of operating convenience, safety and efficiency. Measurement dependent chemical addition for acid and caustic metering for pH neutralization in wastewater treatment. Pulse controlled metering assists in variable flow meters. Features a variable AC frequency combined with digital stroking frequency, removable HMI unit with illuminated LCD, click-wheel and four operation buttons, and three LED's function as operation indicators, alarm indicator, and fault indicator.