MMO Titanium Anode

INTRODUCTION

Mixed Metal Oxide (MMO) titanium anode is designed and manufactured for cathodic protection impressed current system. The anode is based on titanium substrate and coated with either mixed metal oxide or platinum. The special coating activates the anode and provides excellent electrocatalytic properties. Comparing with conventional impressed current anodes, the anodes are small, lightweight and with extreme low consumption rate of less than 1.0 mg/amp-yr.

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 APPLICATION

MMO titanium anodes perform well in all types of environment including areas with extremely low pH level (under 1), and high chloride concentrations. Their unique configuration makes the anodes ideal for use in a wide variety such as cathodic protection system for buried structures, pipeline, steel in concrete, ship, jetties & wharf.
MMO COATING & CURRENT OUTPUT

MMO coating greatly prolong the life of the anode (low wear rate) and provide excellent chemical resistance such as acid condition. The standard outputs are as below. However, 
coating loading may be adjusted to suit a particular current density or design life.

Electrolyte

Maximum Current Density

Anode Life

Carbonaceous Backfill

50 A/m2

20 years

Calcined Petroleum Coke

100 A/m2

20 years

Fresh Water

100 A/m2

20 years

Brackish Water

100¡V300 A/m2

20 years

Sea Water

600 A/m2

20 years

Form

Dimensions

Max. Rated Output

Lifetime

Tubular

3/4¡¨x4¡¦
(19mmx1.2mL)

7 amps

20 years
Tubular

1¡¨x3.28¡¦
(25mmx1mL)

8 amps

20 years
Tubular

1-1/4¡¨x4¡¦ (31mmx1.2mL)

12 amps

20 years

Rod

1/8¡¨x4¡¦ (3.18mmx1.2mL)

1.8 amps

20 years
Rod

1/4¡¨x4¡¦ (6.35mmox1.2mL)

3.6 amps

20 years

Ribbon

1/4¡¨x0.025¡¨(6.4mmWx0.6mmT)

0.05 amp/ft

50 years

Ribbon

1/2¡¨x 0.025¡¨(12.7mmWx0.6mmT)

0.05 amp/ft

50 years
STANDARD TYPES AND SIZES

The anodes are available in most shapes, forms, sizes and length. The left listed are some commonly used anodes with maximum rated output based on calcined petroleum backfill application.

CONNECTION CABLE

The lead cable is available in all types and sizes of cable such as XLPE, HMWPE, KYNAR/HMWPE and HALAR/HMWPE.  The connection between anode and cable is tested for resistance and is less than 0.001ohms.