PHG-2091 industrial online PH meter is precision meter for measurement of PH value of solution. With complete functions, stable performance, simple operation and other advantages, they are optimal instruments for industrial measurement and control of PH value. Various PH electrodes can be used in PHG-2091 industrial online PH meter.The pH controller is widely used in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, chemical, food and tap water industries, and continuously monitors the pH value  and temperature in the solution.