Extech 48PH
pH Controller, Discontinued

  • Microprocessor for reliable, accurate measurement and control of pH
  • High and low set point adjustments on front panel for two independent 3 Amp SPDT relays for on/off controls, or to activate alarms, valves, pumps or other equipment
  • Front panel LEDs indicate HIGH/LOW alarm status
  • Bright dual displays of pH (red LEDs) and temperature (green LEDs)
  • Compact 1/16 DIN size saves panel space - one quarter of the space of a 1/4 DIN controller
  • Automatic Temperature Compensation (ATC) provided using electrode assemblies with Pt100 ohm sensors (see Self-Cleaning pH Electrode Kits)
  • EEPROM memory protects settings in case of power loss
  • Rear screw terminals for power, 2 sets of relays, Pt100 ohm temperature input, and BNC connector for pH input.  Includes panel mounting brackets
  • Optional NEMA-4X gasketed lens cover fits over front bezel of controller - made of watertight corrosion resistant ABS plastic


Ordering Information
Model Description Buy Online Price
48PH Extech 48PH 1/16 DIN pH Controller


*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.