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LIQUID SENSOR <br />DESCRIPTION <br />The TSP -PS Liquid Sensor is a point liquid sensor <br />which may be used with all Tank Sentinel' automatic <br />tank gauge consoles equipped with point sensor inputs. <br />It may be installed in the space between the walls of <br />double wall tanks, in sumps, or in other locations <br />where the presence of liquid indicates a leak has <br />occurred. The TSP -PS is based on electro -optic <br />technology and is made of chemically resistant <br />polysulfone plastic to assure compatibility with most <br />liquids. Each sensor is supplied with 25 feet of oil <br />resistant cable attached. The TSP -PS features reliable <br />operation, easy installation, and the utmost in safety. <br />THEORY OF OPERATION <br />The secret to the TSP -PS's reliability is its electro -optic <br />technology. Inside the body of the probe, a small light <br />emitting diode creates a beam of infrared light. This <br />light travels through the transparent plastic prism to <br />its surface. If the probe is dry, the light is reflected <br />back to a light sensor. When the probe is immersed in <br />liquid, the light travels out into the liquid, and no light <br />is reflected back to the light sensor. The light sensor's <br />output signal is used to indicate whether the probe is <br />wet or dry. <br />ORDER PART NUMBER: TSP -PS <br />5/8" HEX <br />I <br />1/4" NPT <br />5 V DC (RED) <br />GND (BLACK) IMFI <br />OUTPUT (WHITE) F ----2.50-j <br />Distributed by: <br />000-1229 <br />TANK SENTINELtm <br />APPLICATION <br />The TSP -PS may be installed in fiberglass or steel <br />double wall tanks as well as in sumps and other <br />locations. To install the sensor in a fiberglass tank, it <br />is typically pulled into the interstitial space using a <br />"fish" string or wire. In steel tanks, the probe is <br />usually lowered directly to the bottom of the interstitial <br />space through a 2 -inch NPT fitting provided for that <br />purpose. Installation kits are available which include <br />a riser cap and other parts required to complete the <br />installation. <br />STEEL TANK FIBERGLASS TANK <br />INSTALLATION INSTALLATION <br />CON <br />INTELLIGENT CONTROLS,INC. <br />P.O. Box 638 / Saco, Maine 04072 USA <br />800-833-8328 / 207-283-0156 / FAX: 207-283-0158 <br />