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�m- i RIES X76 LEAK DETECTION SYSTEM Federal and State Laws require that all underground hazardous material storage facilities be monitored for leaks to prevent contamination of the soil and seepage into the water table.To comply with these laws different approaches may be taken to assure the detection of these leaks.Ronan's approach monitors the facilities continuously in all critical areas and complies with the EPA recognized methods of external leak nally high level of acceptance by the cognizant agencies and detection.The equipment has found an exceptio major oil companies. The Series X76 Systems have successfully been in operation for many years in gasoline stations,airport fueling facilities,transit systems, military and other government installations,emergency generating facilities for hospitals,high rise buildings, fire pumps,etc.The systems' main application which monitors hydrocar- bons,such as gasoline and fuel oil,has been expanded to include chemicals and cleaning fluids. System Description The Series X76LVC is designed to monitor liquid level,vapor density,pressure and hydrostatic pressure. The system generates an alarm and may shut down specific facilities if preset parameters are exceeded.The microprocessor based system provides visual and audible alarms,self diagnostics and sensor failure indication, fail-safe shutdown and auxiliary switch outputs for communications to a fadliry's remote displays. The liquid level sensors will indicate presence of liquids in the annular space of double-wall tanks, a secondary containment pipes,manhole or caisson compartments and in-tank high level to prevent overfill. The vapor density,measured by the product's unique vapor transducer,is indicated on the appropriate plug-in module in pans per million(ppm)by means of a 9'h digit LED display.The display not only indicates the initial background vapor density in a vadose well or the annulus of any secondarily contained vessel,but also monitors an increasing trend of vapor density.The self-contained display also provides the ability to set the alarm and shutdown setpoints without additional calibration equipment. The pressure measurement utilized to monitor pressurized supply piping reads the pressure decay caused by a leak rate greater than 0.05 gph occurring between automatic test cycles(evey 30 minutes). A hydrostatic measurement is applied to the annulus of a double-wall tank by detecting loss of pressure in the pressurized cavity or the loss of liquid level in a reservoir or the annulus f the tank. The X76 System,housed in an attractive wall mounted NEMA Type t Enclosure,contains the intrinsically safe barrier interface to the transducers,a number of three channel alarm modules,vapor modules,and/or dispenser modules.The front door mounted audible alarm and the Flashing alarm fights are acknowledged by the ACK button and functionally tested by means of the TEST pushbutton.