Description Our STELTH 7 solid-state reference electrodes are designed to: Take ON-potential and IR-free OFF-potential readings of a structure without consideration for any outside influencessuch as nearby rectifiers, anode beds, electric transmission lines, trains, subways, and even steel in concrete – while reading only the single worst potential that exists on that structure (based on NACE Standard SP0177-2014). Easily allow any remote monitoring and control system to automate the IR-Free ON-potential and OFF-potential readings of a structure. Eliminate expensive GPS, high amperage or any interruptersfor rectifiers altogether. Instead disconnect your DC coupon to take your OFF-potential readings. Take on- and off-potential readings of pipelines with sacrificial anode systems. Take current density readings of the STELTH 7 coupon representing the structure in your cathodic protection system. Have a minimum design life of 30 years and infinite shelf life; you can retire before your company will need to replace the reference electrodes you installed! All-in-one solution with no need of external coupons in order to take your CP readings. Be reliable; the STELTH 7 will maintain a stability of ±5 millivoltsover 30 years. Be reused; STELTH reference electrodes can be taken in and out of service as many times as you’d like. Operate in all ranges of soil and water conditions, depending on which chemistry you choose, your STELTH will thrive in any climate, including desert dry soils, flood zones, swamps, fresh water and ocean environments. Just a few reasons BORIN STELTH solid-state reference electrodes are unique: Never need recharging or recalibrating Impregnated with membrane that keeps electrolytes from drying out or getting contaminated Trap hydrogen sulfide or excess chloride ions before they cause damage Let you know when you have dangerous levels of AC to deal with Can thrive in ALL environments, even those chemically detrimental to other reference electrodes Remain accurate for their lifetime Won’t die every winter BORIN stands behind every STELTH reference electrode you buy: We test EVERY SINGLE reference electrode we make You can track/trace any STELTH Every STELTH is calibrated for the life of the cell The STELTH reference electrodes will work for years and remain stable after you retire Features Uses Both STELTH 7 IR-Free Probe & STELTH 7 Rocket: measure ON-OFF Potential, Depolarization Potential, and DC Current Density, 100 mV Shift Size Varies depending on model Standard Lead wire   20′ of RHH-RHW black #16-5 tray cable (any length of wire available) Material High Impact ABS, ceramic with Moisture Retention Membrane (MRM™) Service Life Minimum 30-year service life Shelf Life Infinite shelf life, infinite stability Certified Potential Range  ±5 millivolts vs. standard pH Range 4–9 pH Working Temperature Range 32° F to +176° F (0° C to 80° C) Material Temperature Range -60° F to +185° F (-51° C to 85° C)  Models Stelth® Model Name Model: Chemistry Use Minimum Service Life Size Standard Lead Wire Stelth® 7: Rocket   SRE-031: Cu-CuSO4 SRE-032: Ag-AgCl SRE-033: Zn-ZnSO4 SRE-049: Pd-PdCl2 IR-Free Probe 100 cm2 Coupon On-Off Potential Depolarization Potential DC Current Density 30 years 2" (51 mm) width x 12.75" (324 mm) length Any length of RHH-RHW black #16-5 tray cable wire available.     SRE-031-CSY STELTH® 7 Rocket – Copper-Copper Sulfate (Cu-CuSO4) Model SRE-031-CSY IR-Free probe with 100 cm2 coupon and Bullet Box interrupter providing ON & IR-free OFF potentials, 100mV shift, depolarization and current density readings in low chloride environments (can tolerate chloride plus bromide levels up to 1,000 ppm). SRE-032-SSB STELTH® 7 Rocket – Silver-Silver Chloride (Ag-AgCI) Model SRE-032-SSB IR-Free probe with 100 cm2 coupon and Bullet Box interrupter providing ON & IR-free OFF potentials, 100mV shift, depolarization and current density readings in seawater/chloride environments (with chloride plus bromide levels in excess of 1,000 ppm but less than 19,000 ppm).   SRE-033-ZIR STELTH® 7 Rocket – Zinc-Zinc Sulfate (Zn-ZnSO4) Model SRE-033-ZSR IR-Free probe with 100 cm2 coupon and Bullet Box interrupter providing ON & IR-free OFF potentials, 100mV shift, depolarization and current density readings in low chloride environments (can tolerate chloride plus bromide levels up to 1,000 ppm). Ordering STELTH® 7 IR-Free Probe & STELTH® 7 Rocket Solid-State Reference Electrodes Dimensions of product:  Varies depending on model Weight of STELTH 7: Varies depending on model Weight of Wire: 0.20 lbs per 10 linear feet Standard Lead Wire: 20′ of RHH-RHW black #16‑5 tray cable wire(any length of wire available)