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UNIVERSAL LIQUID SENSOR <br />DESCRIPTION <br />The TSP-ULS Liquid Sensor is a low cost point liquid sensor which may <br />be used with all Tank SentinelO automatic tank gauge consoles. It may <br />be installed in sumps, dispenser pans, steel double wall tanks, or other <br />locations where the presence of liquid indicates a leak has occurred. The <br />TSP-ULS is based on float -switch technology and is made of chemically <br />resistant materials to assure compatibility with most liquids. Each sensor <br />is supplied with a 25 foot cable and is compatible with standard electrical <br />boxes and fittings. The TSP-ULS's normallyclosed output circuit provides <br />supervised operation, ensuring that broken wires and similarfailures will <br />not go undetected. <br />APPLICATION <br />The TSP-ULS may be installed in sumps and in interstitial spaces in steel <br />double wall tanks. A 1/2 -inch NPTthread is provided on the compression <br />gland fitting (cord grip) attached to the sensor's cable, allowing it to be <br />suspended from standard electrical boxes and fittings. In typical <br />applications, the TSP-ULS is screwed into a conduit opening on the <br />bottom of a junction box located on a sump wall. The sensor may be <br />positioned vertically by loosening the gland fitting and adjusting the <br />length of the cable extending from it. In steel interstitial tanks the TSP- <br />ULS is lowered into the opening provided on the tank, and is suspended <br />from the optional TSP -K12 installation kit. Many other mounting methods <br />are possible allowing the TSP-ULS to be used in a wide variety of <br />applications and locations. <br />ORDER PART NUMBER: <br />WEATHERPROC <br />JUNCTION BC <br />CONDUIT <br />TSP <br />Distributed by: <br />000-12_54 Rev. C <br />THEORY OF OPERATION <br />The secret to the TSP-ULS's reliability and low cost is its float switch <br />technology. A small magnetically activated reed switch is located inside <br />the body of the sensor. Tiny magnets are positioned inside a light weight <br />float which is free to move up and down along the shaft of the TSP-ULS. <br />If the sensor is dry, the float hangs down on the shaft so that the magnets <br />are below the reed switch. When the sensor is immersed in liquid, the <br />float rises, and the magnet activates the reed switch. The reed switch <br />opening is used to indicate whether the sensor is wet or dry. <br />3.5 <br />1.44 <br />Evaluated for use as <br />associated equipment with <br />INCON's U.L listed <br />consoles. <br />C0LJJ <br />INTELLIGENT CONTROLS,INC. <br />P.O. Box 638 • Saco, ME 04072 USA <br />800-833-8328/207-283-0156 <br />Fax: 207-283-0158 <br />