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-rAN <br /> Dry Annular Space <br /> Containment Solutions provides a factory-installed "drawstring" at the annular space monitoring fitting, to <br /> assist in positioning liquid sensors at the bottom of the annular space. If your tank is ordered with a dry <br /> annular space, but fitted with the optional fiberglass reservoir(instead of a monitoring fitting),the drawstring <br /> will be positioned within the reservoir. <br /> CONCRETE TRAFFIC PAD <br /> Monitoring System with Liquid Sensor <br /> L61 <br /> ER PIPE Typical configuration for an electronic sensor or manual dipstick. <br /> 1. Use the standard monitoring fitting. <br /> NNULARACEemNG 2. Monitoring cavity may be vented or sealed. <br /> C sENT51NC FaoOE' <br /> CONCRETE TPAFFIC NAD� I <br /> F - Monitoring System with Vacuum and Air Pressure <br /> RISER � � 1. Use the standard monitoring fitting. <br /> PILE VAE <br /> W,,0 AIR <br /> PRESsuRE SENSOR 2. Maximum continuous positive air pressure is 3 psi. <br /> .—aANNRIFAR <br /> SPACE FT➢NG 3. Maximum continuous vacuum is 3" mercury(1.5 psi maximum). <br /> The Hydrostatic <br /> Monitoring System <br /> is the best at leak <br /> curvcRErETRAFFIc PAD Monitoring System with Gasoline <br /> detection because <br /> Vapor Sensor <br /> �— RISER PIPE it is cont innnnsl y <br /> Many vapor sensors also include a water <br /> S-ANNULAR R sensor. monitoring the <br /> PACE1. Use the standard monitoring fitting. complete inner <br /> VAPOR SAN$q: ,, 2. Monitoring cavity may be vented or <br /> and outer tank. <br /> sealed. <br /> WATER <br /> '- R—SENSOR <br />