Model: DB-A COPPER SULFATE DIRECT BURIAL REFERENCE ELECTRODES
Model: DB-A Direct Burial Half Cell Reference Electrode
- Copper-Copper/Sulfate reference electrode
- Certified Copper rod to 99.9%, CUSO (4)
- Proprietary, non-tip electrode, with direct exposure of copper sulfate mixture to backfill/soil
- Large surface area of exposed copper sulfate mixture
- Long Life - 10 + years
- Use with rapid-wetting backfill
- Encapsulate fill area for permanent water seal of wire connection
- Rugged construction
- Body made of PVC/ABS
- DB-A Instrument
- Instructions Manual
Model DB-A Copper-Copper/Sulfate Reference Electrode designed for direct burial for long term monitoring of buried or earth contacting structures.
Permanent reference cell. CuCuSO (4) Half Cell. Bury with rapid wetting backfill. For use on Tanks, Pipelines, and other permanent installations. Connect to CP Test Station.
MODELS DB-A DIRECT BURIAL REFERENCE ELECTRODES
1) INSTRUCTIONS for UNPACKING and INSPECTION
INSPECTION of products should be performed upon receipt. If damage has occurred in shipment, file a claim with the carrier immediately Check components (against packing slip) to be sure nothing is missing. If it is necessary to contact your supplier or Tinker & Rasor concerning damaged or missing items, be sure to include all information such as purchase order number and invoice number.
2) LENGTH OF WIRE
Ensure that enough wire has been included to place the Model DB-A or DB-E in the location desired without causing any stress on the wire, the tie-off point on the reference electrode or the tie point on the test station on the surface.Some slack is recommended to ensure against breakage of the wire or loss of contact with the reference electrode.
3) TIE-OFF OF WIRE TO REFERENCE ELECTRODE
Direct burial reference electrodes are commonly placed underground in locations difficult to excavate after installation, therefore it is very important to ensure a strong tie is used when connecting the wire to the reference electrode. Because splices are a common source of failure, the DB-A is not supplied with wire. This allows a single, non spliced wire connection to be made in the field for the exact length required, then a epoxy can be used to seal the connection point.
(Below) shows a solderless lug (not supplied), which is recommended to tie-off the wire to the reference electrode. Place wire into open end of the lug and crimp tight.
(Below) shows detail of the connection. Place the solderless lug onto post at top of the reference electrode. Tighten nut down on lug. Coil the wire into three or four loops inside the reference electrode.
4) MIXING RESIN COMPOUND
A resin compound should be used with the DB-A Direct Burial Reference Electrode. This type of compound usually comes in a two-part mixture. It must be water-proof after application.The resin will come with its own instruction manual for mixing and pouring, as well as proper disposal methods.
WARNING: MANY RESIN MIX TEMPERATURE WILL RISE TO OVER 150°F WHEN MIXED! READ INSTRUCTIONS BEFORE MIXING
After mixing resin, pour into top of the reference electrode,completely covering wire connection and top of copper electrode.
Fill the reference electrode to top with resin. Discard resin per separate Resin Compound instructions.
5) INSTALLATION IN SOIL
The reference electrode should be placed in the soil nearby the structure being measured. Because soil can change in potential in a few feet one direction or another, placing the reference electrode as close to the structure is important for proper reads.A rapidly wetting backfill, such as Bentonite, is required to keep the reference electrode moist. To install a reference electrode with backfill, place electrode in bag of backfill.Tie bag closed. Submerge bag in water for approximately five minutes. After soaking, place bag in soil at desired location.
6) SHELF LIFE OF MODELS DB-A AND DB-E REFERENCE ELECTRODES
The Models DB-A and DB-E have a shelf life of one year. It is recommended that the reference electrode not be installed after this period.
The Model DB-A are warranted against manufacturer defect for 15 years.The Model DB-A and DB-E will operate under normal circumstances for approximately 15 years. Depending on soil conditions, much longer useful life is not uncommon.
- Tech Data
Copper-Copper Sulfate Reference Electrode (CuCu/So4)
Low freezing point and high boiling point makes rugged product in most environments
Proprietary, non-tip electrode with direct exposure of copper sulfate mixture to backfill/soil
- DB-A: 2.875" diameter, 4.88" long approx. weight 1.5 lbs (0.700kg)
Specifications subject to change due to ongoing product development