We are proud to present this highly versatile 1/4 DIN pH/ORP controller. You can select from three control types: on/off, proportional pulse length, or proportional pulse frequency. Use on/off control to shut your pump or valve on or off when your process passes its set points. Use proportional control to gradually increase or decrease your pump's or valve's response depending on the amount by which your process has passed the set point.
Customize your controller to fit your application! The pH 1000 is selectable for pH or ORP control; 0-20 or 4-20 mA scalable recorder output; normally open or closed relays; and manual or automatic temperature compensation (ATC).