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Type 2774/2776 DryLoc pH Electrodes

The Signet 2774 - 2777 pH and ORP Electrodes feature a unique foulproof DryLoc® connector with goldplated contacts designed specifically for use with the Signet 2750 and 2760 preamplifiers, sensor electronics, and connectors. These dependable and highly responsive electrodes feature a PTFE double reference junction with KNO3 in the front chamber to block various poisoning ions. Embedded positioning of the temperature element in the pH sensing tip allows the temperature response to be quick and accurate.

The electrodes are offered with either flat or bulb style sensing elements. The flat versions allow sediment and particles to sweep past the measurement surface, minimizing risks of abrasion, breakage and coating. The bulb versions can be used for general purpose applications. Due to the specially designed chambers which keep electrolyte in place, all versions can be mounted at any angle, even inverted.

  • Wetted Materials: Ryton, PTFE, FKM, glass
  • Connection: Durable DryLoc® with gold plated connections
  • Compatible Preamp/Sensor Electronics: 2750 and 2760
  • Compatible Instruments: Use the 2760 preamplifier with the Signet 8750; Use the 2750 sensor electronics with the Signet 8900, 9900 or 9950 instruments
  • Additional Features: Quick temperature response and can be mounted upside-down
  • In-line Mounting styles:  Standard 3/4 inch or ISO threaded fittings
  • Submersible mounting: Available using the back of the preamplifier or sensor electronics
  • Applications: Water treatment, water quality monitoring, some harsh chemicals

Technical Details

Compatible Preamplifier
Add to Cart
3-2774Flat2760 DryLocwith threaded connectionMeasurementsCAD 159000955
3-2774-1Flat2751 Drylocwith threaded connectionMeasurementsCAD 159000956
3-2776Bulb2760 DryLocwith threaded connectionMeasurementsCAD 159000959
3-2776-1Bulb2751 DryLocwith threaded connectionMeasurementsCAD 159000960
3-2774-HTFlat2751 DryLocwith threaded connectionMeasurements 159001796
3-2774-HT-CFlat2751 DryLocwith threaded connectionMeasurements 159001795
3-2774-HT-ISOFlat2751 DryLocwith threaded connectionMeasurements 159001794


  • Quick temperature response
  • Special design allows mounting at any angle
  • Easy sensor replacement using DryLoc electrode connector
  • Mounts into standard 3/4 inch threads
  • Durable DryLoc connector with gold plated contacts
  • High temperature versions available

Fields of Application:
  • Neutralization Systems

  • Aquatic Animal Life Support Systems
  • Cooling Tower and Boiler Protection
  • Water Treatment & Water Quality Monitoring
  • Demineraliser, Regeneration & Rinse
  • Pool and Spa Control


GF Signet pH-ORP Monitoring and Control brochure.pdfPDF4.18 MBDownload
Automation Made Easy.pdfPDF5.11 MBDownload

Data Sheet - 2774-2777 DryLoc® pH/ORP Electrodes.pdfPDF443.82 KBDownload
Temperature-Pressure Graphs.pdfPDF1.94 MBDownload

Instruction Manual
German Manual – 2774-2777 Electrodes.pdfPDF1.54 MBDownload
French Manual – 2774-2777 Electrodes.pdfPDF1.53 MBDownload
Spanish Manual - 2774-2777 Electrodes.pdfPDF1.52 MBDownload
Spanish Manual – 2774-2777 Electrodes.pdfPDF1.52 MBDownload
Chinese Manual - 2774-2777 Electrodes.pdfPDF2.13 MBDownload
English Manual – 2774-2777 Electrodes.pdfPDF1.48 MBDownload

Product Catalog
Installation Fittings and K-Factors.pdfPDF9.15 MBDownload

Georg Fischer Rohrleitungssysteme (Schweiz) AG
Amsler-Laffon-Strasse 9
8201 Schaffhausen

ch dot ps #at# georgfischer dot com
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