Permanent Reference Electrode

INTRODUCTION

Permanent Reference Electrode is designed for long term permanent use to obtain accurate potential reading on buried structures. It is the best underground installation on pipelines, tanks, or other underground structures. In order to obtain the longest possible life, a Cu/CuSO4 element is recommended to be used in low chloride soils (<500 ppm) while a Ag/AgCl element is for high chloride soil (>500 ppm).

Reference Cell.gif (4573 個位元組)

SPECIFICATION

  • Housing: 10" x 3" dia.

  • Element type: saturated gelled Cu/CuSO4  or Ag/AgCl

  • Design life: 15 and 30 years life design to be selected

  • Shelf life: 1 year minimum

  • Stability: ±5 mV

  • Standard cable: 5 meters of 3.5 mm² (AWG#12) HMWPE cable, Other type of cable, size, length available upon request

APPLICATION PROCEDURE

  • Remove plastic shipping bag before installation

  • Place reference electrode in trench, adjacent and perpendicular to pipe, even with or below pipe center line

  • After reference electrode is placed in trench, soak with minimum five gallons of potable water or pre-soak reference electrode

  • Before installation immediately after soaking reference electrode, backfill with native soil

  • Connect reference electrode lead wire and pipe test lead wire to separate terminals in test box

  • Do not allow to freeze, install below frost line and keep dry prior to installation