High precision PH sensor 1.Isolation type 4~20mA output 2.LCD ... with back light 3.Temperature compensation 4 High precision PH sensor ApplicationIndustrial waste water,pure water, circulating water,food wastewater ... treatment, glass carving process, electroplating wastewater, printing and dyeing, electronic semiconductor, chemical, pharmaceutical, etcFeatures:1.High impedance preamplifier, strong ...