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F Site Preparation and Inst, ation Instructions <br /> TLS-350 UST Monitoring System <br /> y4"HOLE 17/6" <br /> 4 PLACES 16" ►1�- <br /> rF I F_ <br /> I it I <br /> � I <br /> ' I <br /> I <br /> 13"1 <br /> I 12" 1 <br /> 11„ 1 <br /> I <br /> I II I <br /> � I <br /> II I <br /> FRONT VIEWI <br /> ys.'� 1 <br /> 20" <br /> 3/4. 1,1'/4 I.P.S. <br /> KNOCKOUTS <br /> (TOP AND BOTTOM) <br /> 29/16.. .31/6,. <br /> f <br /> r r <br /> 7" <br /> TO POWER TO INTRINSICALLY 51/4" <br /> AREA SAFE AREA <br /> i <br /> 193/4 <br /> BOTTOM VIEW <br /> Figure 8. Monitor Dimensions and Mounting Requirements. <br /> requirements of the site,and must conform to Federal, F. PROBE AND SENSOR JUNCTION BOX <br /> state and local codes. INSTALLATION. <br /> Knockouts for 3/4", 1" or 1-1/4" I.P.S. conduit are 1. Install a weatherproof electrical junction box with <br /> provided in the intrinsically safe area of the monitor. gasketed cover on the end of each probe and sensor <br /> You must conform to the National Electrical Code and conduit run at the manhole or monitoringwell location. <br /> state and local codes and consider the number of wires Gasketing or sealing compound must be used at each <br /> entering the monitor when deciding on the size and entry to the junction box to ensure a waterproof junc- <br /> number of conduits required for probe and sensor tion. The interior of each junction box must be a <br /> wiring. minimum of 16 cubic inches.Use one of the approved <br /> 3. The conduit must be properly sealed in accordance with units shown in the following listing or an equivalent <br /> the National Electrical Code(NFPA 70)and the Auto- unit. <br /> motive and Marine Service Station Code(NFPA 30A) <br /> since they pass from a Class I,Division I or Division II <br /> area into a nonhazardous area. <br /> 8 <br />