AccuRef 30 Copper/Copper Sulfate with Integrated Coupon

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AccuRef 30 Copper/Copper Sulfate Electrode with Integrated Coupon

M.C. Miller's commitment to research and development of new technologies has led to the AccuRef 30. Due to the development of a unique electrolyte, these new electrodes have a projected lifetime of 30 years while maintaining the accuracy you have come to depend on.


Electrode: Permanent Copper/Copper Sulfate.
Applications: Direct burial in soil, assuming low (<500 ppm) levels of chloride ion contamination. Note: For applications in chloride ion contaminated soil, we recommend Accuref Silver/Silver Chloride electrodes.
Low Freezing Point: -20 oC.
Design Life: 30 years.
High Purity Materials: Copper rod & Copper Sulfate crystals.
Cost: Less expensive than most Copper Sulfate permanent electrodes.
Tip: Moisture absorbent ceramic tip.
Evaporation: Will not dry out at low humidity and/or high heat.
Wire: 25 feet of #12 AWG XLPE RHW-2 lead wire; cross-linked Polyethylene jacket, direct burial, low leakage, 600 V, 90 °C Rating. Longer lengths of wire are available
Electrical Contact Surface Area: Approximately 16.4 square inches (a cylindrical surface, 1.5 inches in diameter and 3.5 inches in length)

Coupon Features:

  • Integrated coupon/holder assembly
  • Integrated PVC Pipe Adapter for optimal PVC pipe connection (nominal 3 inch diameter pipe)
  • Carbon Steel coupon (AISI 1018, ASTM A108, AMS5069) with 10 cm2 surface area
  • #12 AWG (4 mm2) standard copper wire, green colored THHN insulation, single wire, 25 feet long for coupon connection. Longer lengths of wire are available

Important Notes:

  1. These products must be installed according to the installation instructions provided.
  2. These products are not guaranteed to maintain their calibration in all soil environments and it is incumbent on the customer to test their soil for the presence of any potential chemical contaminants prior to installation of these products. The M. C. Miller Company has not tested these products with regard to the effects of specific (potential) chemical contaminants on their calibration.
  3. These products are not designed for submersion applications.
Diameter: 4.0in
Length: 20.75in
Weight: 5.25lbs
Boiling point: 100oC
Wire length: 25ft. Longer lengths of wire are available.
Wire gauge: #12 AWG
Wire type: cross-linked Polyethylene jacket, direct burial, low leakage, 600V, 90oC Rating, USE - 12/RHH/RHW-2.
Electrical Contact Surface Area: Approx. 16.4in2 (a cylindrical surface, 1.5in diameter and 3.5in length).
Chemical contents: 80g of high purity(99.9%) Copper and 500ml of electrolyte gel.

Type: Carbon Steel(AISI 1018, ASTM A108, AMS5069)
Surface Area 10cm2
Wire length: 25ft. Longer lengths of wire are available.
Wire gauge: #12 AWG standard copper, single wire