Dwyer LLC-31 Conductivity Controller is a reliable solution for electrically conductive fluids. It features a temperature controller with a range of -40 to 150°F (-40 to 65°C), probes with a temperature resistance of up to 406°F (207°C), and ±0.25% FS accuracy. Power requirements include 120 VAC or 240 VAC. The controller can be mounted using an 8 pin octal or DIN mount, while the probes use a 3/8" Male NPT. The wetted material is 316 stainless steel and PTFE, with a pressure limit for probes at 400 psig (27 bar). The electrical rating is 10 Amps resistive, 1/3 hp at 120/240 VAC. The switch type is SPDT, N.O. or N.C. The probe length is 72 inches (1.82 m) and the electrodes have a diameter of 1/4" (6.3 mm), made of 316 SS. The sensitivity of the controller can be set to 10K Ω or 26K Ω.