Dwyer LLC-128 Conductivity Controller is a versatile and accurate controller for electrically conductive fluids. It has a wide temperature range of -40 to 150°F (-40 to 65°C), with probes capable of withstanding up to 406°F (207°C). With an accuracy of ±0.25% FS, it ensures precise control. The controller can be easily mounted using an 8 pin octal or DIN mount, while the probes have a 3/8" Male NPT connection. The wetted materials are 316 stainless steel and PTFE, ensuring durability and resistance to corrosion. The probes can withstand pressures up to 400 psig (27 bar). It has an electrical rating of 10 Amps resistive, 1/3 hp @ 120/240 VAC, and is equipped with a SPDT switch type. The probe length is 72 inches (1.82 m) with 1/4" (6.3mm) diameter electrodes. The controller sensitivity options are 10K Ω or 26K Ω.