The Stelth® 7 IR Free & Stelth 7 IR Free Rocket reference electrodes were developed to take IR Free on-potential and off-potential readings as well as 100 mV shift (depolarisation) readings of a structure without having to shut down or turn off any interference systems, such as your own system rectifier, other rectifiers in the area, electric railway systems and electrical transmission lines, while reading only the single worst potential that exists on that structure in a 50 metre area.
Both the Stelth 7 IR Free and Free Rocket reference electrodes have a minimum design life of 30 years, an indefinite shelf life and weigh only three pounds (1.36 kg). The electrodes will maintain a stability of 5 millivolts with no more than 3 micro-ampere load over 30 years in a temperature range from -10°F to 176°F (-23°C to 80°C).
Capable of operating in all ranges of soil and water conditions, from desert dry soil to flood zones, swamps, sea and fresh water environments, the Stelth electrodes can also be re-used and taken in and out of service as many times as desired.
The electrodes also eliminate expensive interrupters and eliminate the tedious procedure of synchronising a series of interrupters.
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They allow users to take off potential readings on rectifiers that have high amperage outputs which are beyond the capacity of the interrupters on the market today. This technology easily allows any remote monitoring and control system (SCADA process control system) to automate the IR free on-potential and off-potential readings of a structure as well as 100 mV shift (depolarisation) readings.
On-potential and off-potential measurements can now be taken with total disregard for any and all outside influences, including the users own rectifier, neighbouring rectifiers, anode beds, electric transmission lines, trains and subways and steel in concrete, to name a few.
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