_S651CD – process pH electrode


Range: 0 – 14 pH

Wetted Materials:
Body/Junction: CPVC/HDPE
Measuring Surface: pH glass

Temperature/Pressure Ranges:
for HDPE – 75 °C ; 6 bar

Reference Type: Ag/AgCl, Sealed Double Junction

Warranty: One year, limited



pH Ind 2019-01-10 BG
pH Ind 2019-01-10 EN


This submersible pH electrode is ideal for tanks, flumes and sewer lines. The self-cleaning, flat-surface design makes the S651CD resistant to coating, increasing time between maintenance cycles. Based on our popular S650CD, the S651CD features protective feet to guard the pH glass against breakage. Double junction reference protection extends the lifetime of the sensor. Should a replacement sensor be required, the electrode is equipped with quick disconnect BNC connections to minimize downtime due to electrode maintenance. Designed for use with our S653 Cable Assembly for a complete Submersible Flat-Surface, Self-Cleaning pH measurement solution.

  • Flat surface design resists coating
  • Double junction reference protection extends sensor lifetime
  • Use with S653 Cable Assembly for quick and easy maintenance
  • Reliable CPVC construction
  • One year limited warranty