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PLC-5000 Site Controller, LD-2000 and LD-2000 PLC <br /> • More responsive leak detectors allowing the line to open up for pumping more <br /> quickly. When the pump is off, it will reset to leak sense position faster because <br /> of the smaller amount of fuel under the piston. Additionally, the leak detector <br /> does not have to completely reset to cycle through the leak sense position. If the <br /> line pressure falls as low as 2.5 psi (when the pump is off), the leak detector is <br /> forced into the leak sense mode. <br /> • Reduced surface area of the piston significantly reduces the surface area of the <br /> piston exposed to hydraulic line shock, enhancing leak detection performance <br /> not only in steel and fiberglass lines but also in flexible piping systems. <br /> • Higher leak sense pressure is possible due to the reduced piston area. The leak <br /> detector stays in the fast fill position to a higher pressure, compressing vapor <br /> pockets or removing stretch from flexible pipe faster. <br /> • Field adjustment access in cap to adjust sensitivity for wear or field variables <br /> such as deep burial or excessive trapped vapor. <br /> Page 8 <br />