The model identification used for EDI products consists of three groups, eg: UL-CUG-SW. The first group defines the basic product while the second and third groups define the various options associated with that product. This selection guide briefly describes products within the EDI U Series. For further information, see the individual data sheets.
U Series underground references are available with Cu/CuSO4 or Ag/AgCl elements. Standard termination is 50 feet #14AWG HMWPE wire; other wire sizes and types are possible. EDI designs and builds references for any underground application. We also offer the standard products listed below.
Reduced
Diameter Reference Electrodes (SlimLineTM)
These references can be installed in a 2 inch (5 cm) diameter hole. They are
typically used in retrofit installations beneath paved surfaces such as underground
tanks, hydraulic cylinders or pipes. They are also ideal for use beneath aboveground
storage tanks. Model US
has a 30 year design life while Model US50 has a 50 year design
life. Model UD Dual Element Reference Electrode is a variation
of the SlimLine references. It has a Cu/CuSO4 or a Ag/AgCl element with a 30
year design life in addition to a zinc element. It is primarily used beneath
aboveground storage tanks.
Standard
Design Underground Reference Electrodes
These references are contained in a cotton bag filled with a bentonite-gypsum
backfill. They are best for new construction where there is an open excavation.
Model UL Extended Life Reference Electrode has a 30 year design
life and is considered the premium reference electrode for underground applications.
Choose Model UL50 for a 50 year design life. For short term
requirements, Model UR Standard Reference Electrode with a
15 year design life may prove adequate.
Cathodic
Protection Coupons
Cathodic Protection Coupons permit the measurement of IR drop free potentials
on all types of cathodic protection systems (sacrificial and impressed current).
Model UC Underground CP coupon is a patented plate coupon that
permits measurements to be made without disconnecting the coupon; it is attached
to a conventional test station. Model UI sensor is a rod coupon
fitted to Model UL or US references at time of manufacture; the coupon is momentarily
disconnected to make instant-off measurements.
UX
Custom References
The UX model designation is used for special or unusual customer
requirements.