Reference Electrodes

The STELTH 7 Reference Electrodes are designed to provide all of your Cathodic Protection readings, both AC and DC, with one device by utilizing integral coupons of different sizes and combinations. Borin was the first to introduce IR-Free Reference Electrodes with coupons in 1988.

Solutions for DC Readings 

The STELTH 7 provides ON-potential and IR-free OFF-potential readings of a structure without consideration of any outside influences, such as nearby rectifiers, anode beds, electric transmission lines, electric trains, subways, and other steel structures. 

Eliminates the need for expensive GPS and interrupters for rectifiers. Instead, disconnect your DC coupon to take your OFF-potential readings. 

Produces on- and off-potential readings of pipelines with sacrificial anode systems. 

Retrieves current density readings of the STELTH 7 coupon representing the structure in your cathodic protection system. 

An all-in-one solution, combining a long-life Reference Electrode with coupons precisely sized to match the aged conditions of your structure. With the half-cell and coupons integrated, this solution is far superior to using separate external coupons.

Solutions for AC readings 

Monitor AC interference to determine if you need an AC mitigation system to stop corrosion due to AC currents. After installation, monitor its efficiency to check that the AC mitigation system is working correctly and complies with the law to avoid dangerous levels of AC. 

Achieve valid potential readings at sites with AC current interference, like high-density utility corridors and urban areas with uncontrollable foreign influences. 

Obtain all of your CP readings with one device: 

The STELTH 7 with coupons (see coupon size options below) can give you readings for: 

• Structure DC ON Potential 

• Structure DC Instant OFF Potential 

• Structure DC Depolarized Potential 

• Structure AC Potential 

• Coupon DC ON Potential 

• Coupon DC Instant OFF Potential 

• Coupon DC Depolarized Potential 

• Coupon DC Current density 

• Coupon AC Potential 

• Coupon AC Current density 

• Coupon Native DC Potential 

• Coupon Native AC Potential                

The STELTH 7 is integrated with coupons, specifically designed to optimize readings for the best accuracy. You can have as many coupons as you need and in any combination. Coupons are available in many sizes and geometries. The geometries of the coupons have been optimized to achieve the best readings. 

Coupon sizes: 1cm², 5cm², 10cm², 50cm², 100cm², 1in² and custom sizes. 

Combine with BORIN’s explosion-proof AC/DC Analyzer (Coupon Voltage and Current Interrupter), which mounts in above and below-ground test stations, to enable you to take all your readings; the terminals are color-coded to match the wires from the STELTH 7 for ease of installation. It easily fits in most 3” above-ground test heads. 

Alternatively, automate continuous readings by connecting to a DART Test Station Remote Monitoring Unit (or other RMU on the market), which becomes crucial when trying to log potential and current density readings over a period of time at different times of day – as stray currents can vary greatly depending on local power demands. 

For more information on the use of reference electrodes with coupons, review our technical bulletin (link to Technical Bulletin Stelth 7).

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