ACAPS Combi 90

Reference Electrode

• 1.1 Geometry Compact Permanent Copper/Copper Sulphate Reference Electrode
• 1.2 Housing Porous Terra-cotta 72mm OD x178mm high
• 1.3 Element Copper Spiral 3.5mm dia x 1000mm long
• 1.4 Medium Copper Sulphate Crystals in saturated copper sulphate gel
• 1.5 Housing Seal Primary packing seal and secondary epoxy resin cap
• 1.6 Accuracy +/- 10mV over 15 years (<3 micro-amp load)
• 1.7 Stability 0ºC to 55ºC
• 1.8 Backfill No Backfill

Coupon

• 2.1 Geometry Single Coupon (equal size)
• 2.2 Material Type Carbon Steel Grade
• 2.3 Coupon Size Exposed standard face 1cm² (other sizes to client specification)
• 2.4 Coupon Body UPVC
• 2.5 Encapsulation Epoxy Resin
• 2.6 Cable Connection Cable lug via M6 threaded bolt

Ancillary Items
1. Reference Electrode Cable Detail

• 1.1 Type XLPE/PVC
• 1.2 CSA 10mm²
• 1.3 Length 1 M
• 1.4 Termination Sealed into epoxy resin cap
• 2.5 Encapsulation Epoxy Resin
• 2.6 Cable Connection Cable lug via M6 threaded bolt

2. Coupon Cable Detail

• 2.1 Type XLPE/PVC
• 2.2 CSA 2.5mm²
• 2.3 Length 1 M
• 2.4 Termination Cable lug C
• 2.5 Encapsulation Epoxy Resin
• 2.6 Cable Connection Cable lug via M6 threaded bolt

3. Combi Housing
PVC slotted 90mm OD Geoscreen. Reference electrode seated in gel saucer. Column filled with moisture retaining compound.

Inspection and Testing
Factory Test Chemical Analysis & Visual Inspection

Minimum Frequency Sample per Batch - All units

Acceptance Criteria Within accepted criteria Pass/Fail

Test Report provided upon request