Water conductivity is a core process parameter to judge water purity, electrolyte concentration, pipeline corrosion risk and wastewater discharge compliance. ACITEK AC58031404 is a 2-electrode conductivity sensor with 3/4NPT standard thread, SS316L all wetted parts, built-in PT1000 temperature compensation and 1 cm⁻¹ cell constant, covering a full measurement range of 0.02~50,000 µS/cm. It withstands 17 bar pressure & 93℃ medium temperature, equipped with a 5m standard signal cable, supporting OEM/ODM customization of cable length. Combined with DIN rail compact transmitters like ACITEK G100 series, it has formed stable online monitoring solutions for power plant water, semiconductor ultrapure water, fine chemical process liquid, industrial circulating water and wastewater treatment. This article shares 4 real industrial application cases of this sensor, showing its performance advantages and on-site value.