• Accuracy: ±0.1% of scale
  • Displays pH/temp/mV or ORP/mV
  • EasyCal simplifies routine calibration
  • Intuitive software design
  • Scaleable 4 to 20 mA output internally powered
  • Two programmable relays
  • Dual proportional control capability
  • Non-volatile memory


The GF Signet 5700 pH/ORP Monitor is a versatile and intelligent instrument that recognizes the type of sensor connected, either pH or ORP, then automatically sets itself for the corresponding display and functionality.

During EasyCal operation, the GF Signet 5700 pH/ORP Monitor automatically recognizes standard buffers/test solutions, thereby shortening and simplifying routine calibration procedures. Two programmable relays and one scaleable 4 to 20 mA output are included with the GF Signet 5700 pH/ORP Monitor, and the four-button keypad arrangement with intuitive software design is very user-friendly. GF Signet 5700 pH/ORP Monitors require 12 to 24 Volts, AC or DC, and can be used with many GF Signet pH/ORP electrodes and preamplifiers, or with electrodes from other manufacturers by using the 2721 Preamplifier. Several useful accessories are available to the GF Signet 5700 pH/ORP Monitor, including the optional splashproof rear cover kit.

Applications for the GF Signet 5700 pH/ORP Monitor

  • Water & Wastewater Treatment
  • Neutralization
  • Scrubber Control
  • Effluent Monitoring
  • Surface Finishing
  • Heavy Metal Removal and Recovery
  • Toxics Destruction
  • Sanitization Systems
  • Pool & Spa Control
  • Aquatic Animal Life Support Systems
  • Process Control

System Compatibility

The GF Signet 5700 pH/ORP Monitor is compatible with a wide variety of GF Signet components. Please click here to view typical system configurations. If you have any questions about your particular installation, please contact us.