2721 Preamplifier


Pre-amplification is required to protect the output signal of pH and ORP electrodes from a wide variety of electromagnetic interferences common in industrial environments. Signet 2721 is used if remote pre-amplification is required (e.g. tank temperature >80oC) or connecting another manufacturer's electrode to the Signet 5700 or 8750 instrument. The Signet 2721 should be used with special order sensors built with cables (Signet models 277X-HT or 277X-1-HT).

Product Overview

Fields of Application:

  • Water and Wastewater Treatment
  • Neutralization Systems
  • Scrubber Control
  • Effluent Monitoring
  • Surface Finishing
  • Flocculent Coagulation
  • Heavy Metal Removal and Recovery
  • Toxics Destruction
  • Sanitization Systems


  • Design allows quick connect/disconnect of sensors
  • Pre-amplification for submersible and in-line installations
  • Unbreakable CPVC body
  • Designed for use with Signet pH and ORP Electrodes to assure signal integrity up to 120 m. (400 ft)


Compatible Products