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onitori.mg the Attached Collar Riser Alternative Tank -Monitoring Systems <br />The optional attached collar riser provides containment for <br />leakage from the submersible pump. Should double wall pip- <br />ing be used, a leak in the primary piping will drain to the <br />attached collar riser. <br />monitor the unwanted presence of liquid inside the riser, <br />n optional electronic sensor is mounted at a specified posi- <br />tion on the wall of the attached collar riser. The unit permits <br />continuous electronic monitoring through the control panel. <br />The solid-state sensor consists of a liquid -level sensing element <br />that is activated when a liquid rises to a predetermined and <br />unacceptable level in the riser. The level is sensed and con- <br />verted to a voltage output, which in turn activates the alarm <br />system. <br />Y Y 1 <br />The manufacturers instruction manual, covering installation, <br />operation and maintenance of the monitoring system, is avail- <br />able from Xerxes sales representatives. A copy of the manual <br />will be sent with each unit. <br />Note that the monitoring system must be installed in accor- <br />dance with the manufacturer's instructions, and all federal, <br />state, and local laws and regulations: <br />Liquid Sensor Monitoring Systems <br />(Dry Annular Space) <br />Typical configuration for <br />an electronic sensor or <br />manual dipstick. <br />Note: Monitoring cavity <br />can be vented to atmos- <br />phere or sealed. <br />Concrete Traffic Pad <br />Vacuum and Air -Pressure Monitoring Systems <br />(Dry Annular Space) <br />Notes: <br />1. Maximum continuous <br />positive air pressure is <br />3 psi. <br />Z. Maximum continuous <br />vacuum is 3" mercury <br />(1.5 PSI maximum) <br />must be maintained. <br />Concrete Traffic Pad <br />R-- Vacuum or Air - <br />Riser Pressure Sensor <br />Pipe <br />= Monitor <br />Fitting <br />15 <br />' <br />Riser Pipe <br />Monitor <br />Fitting <br />�. <br />, <br />Dry Annular Space <br />Liquid -Sensing Probe <br />Vacuum and Air -Pressure Monitoring Systems <br />(Dry Annular Space) <br />Notes: <br />1. Maximum continuous <br />positive air pressure is <br />3 psi. <br />Z. Maximum continuous <br />vacuum is 3" mercury <br />(1.5 PSI maximum) <br />must be maintained. <br />Concrete Traffic Pad <br />R-- Vacuum or Air - <br />Riser Pressure Sensor <br />Pipe <br />= Monitor <br />Fitting <br />15 <br />