2751 DryLoc pH/ORP Smart Sensor Electronics


The Signet 2751 pH/ORP Smart Sensor Electronics featuring the DryLoc® connector, is the solution for field-free calibration, out of range glass impedance and broken glass detection, alerting the operator to probe failure or maintenance needs.

The 2751 features two different outputs: a two-wire 4 to 20 mA loop output with optional EasyCal function or a digital (S3L) output which allows for longer cable lengths and is compatible with all Signet 8900, 9900 and 9950 instruments or in blind, 4 to 20 mA.

The Smart Sensor Electronics will allow for calibration of electrodes in a laboratory setting and installation of precalibrated probes in the field, reducing system downtime. Memory chip enabled electrodes will store operational data such as minimum and maximum pH/mV readings, runtime, minimum and maximum temperature (pH only), for troubleshooting and operational evaluation. To take full advantage of all features and benefits of the 2751, use with Signet 9900 (Generation IV or later), 9950 (Generation II or later) or 0486 Profibus Concentrator.

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
  • Aquatic Animal Life Support Systems
  • Pool and Spa Control


  • Probe health monitoring, glass impedance and broken glass detection
  • Memory chip interface that allows for transferable calibration, runtime data, and manufacturing information
  • In-line integral mount and submersible installation versions
  • Automatic temperature compensation
  • Auto configuration for pH or ORP operation
  • Optional EasyCal calibration aid with automatic pH buffer recognition for 4, 7 and 10 pH and ORP solutions: quinhydrone saturated pH 4 or 7 buffers and Light's Solution +469 mV
  • Junction boxes for convenient wiring
  • Patented DryLoc® connector provides a quick and secure connection to the sensor


  • CE
  • FCC
  • RoHS compliant
  • China RoHS


Compatible Products