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The Vacuum Senor Kits are available in three models: one for monitoring double-walled <br /> piping and sump interstices, one for monitoring double-walled steel tank interstices (see <br /> example installation drawing in section 4.0 of this MSR) and one for double-walled <br /> fiberglass tanks. These kits differ in the number of vacuum sensors and configuration <br /> of associated liquid sensors. An inline mounted liquid sensor is used for Vacuum <br /> Sensors monitoring piping and sumps. An appropriate tank liquid sensor (to be <br /> installed in the secondary space at the bottom of the tank) is provided with one of the <br /> Vacuum Sensors in the steel and fiberglass tank kits to monitor the tank interstice. <br /> The 3rd Party Certification is attached. UL approved, National Work Group and LG113 <br /> listed. <br /> 3.0 Launch Schedule <br /> As of the date of this MSR, the Vacuum Sensing System will be available for shipment. <br /> Due to order backlog, normal shipping lead times may not begin until late 2004. <br /> MSR 09-04-A 2 <br />