Tube Sheet Mounted Reference Electrodes

Model T - Tube Sheet Reference *

Typical Application:

Condenser tube sheets

Featuring:

Ability to place a reference electrode in selected locations on the tube sheet
In-line underwater connector for easy removal
CPVC housing rated to 210F
All non-metallic double tube plug for attachment

Electrode Housings

Gelled Element - 1 1/16 dia. x 3" long; gray CPVC housing.

Dry Element - 1" dia. x 2" long; gray CPVC housing

Both electrodes terminate with a socket-type underwater connector on a 6" (nom.) fully encapsulated lead wire.

Specify as EDI Model TE-xxx-SW
where xxx = element type

AGG - saturated gelled Ag/AgCl element
AGD - dry-type Ag/AgCl element
CUG - saturated gelled Cu/CuSO₄ element
ZIN - 99.99% zinc element

Lead Wires

Pin-type underwater connector attached to #22 AWG Teflon® insulated lead wires, available in the following colors: red, orange, yellow, green, blue, purple, brown, black, white, gray.

Specify as EDI Model TW-col-LWnnn
where col = color code and nnn = wire length in feet

Cathodic protection applied to a waterbox can cause a non-uniform potential distribution to exist over the face of the tube sheet. These potential gradients cannot be detected by a remotely mounted reference electrode. Excessively electronegative potentials can result in hydrogen damage on titanium and ferritic stainless steel tubes while excessively electropositive potentials mean inadequate protection of the tube sheet. Model T references are the only means to verify that the actual potential at the tube sheet surface is within the acceptable range.

* U.S. Patent 4,957,616