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LG 113 Vendor/Template <br />Issue Date: April 18, 1997 <br />Revision Date: May 21, 2003 <br />E <br />C <br />Models 404,406 Liquid Level: Sensors with Models 500, 500C Controllers, <br />Model 522 Remote Monitoring System, and Model 522T Monitoring System <br />Output type <br />Sampling frequency <br />Operating principle <br />Model 404 Liquid Level <br />Sensor <br />Detection time (sec) <br />Fall time <br />Precision (in) <br />Lower detection limit (in) <br />Model 406 Liquid Level <br />Sensor <br />Detection time (sec) <br />Fall time <br />Precision (standard deviation) <br />Lower detection limit (in) <br />qualitative <br />continuous <br />float switch (Model 404), refractive index of liquids (Model 406) <br />unleaded gasoline <br />diesel <br />water <br /><1 <br /><1 <br /><1 <br />manual reset <br />manual reset <br />manual reset <br />0.0124 <br />0.0167 <br />0.0067 <br />0.89 <br />0.72 <br />0.68 <br /><1 <br /><1 <br /><1 <br />manual reset <br />manual reset <br />manual reset <br />0.003474 <br />0.001923 <br />0.005329 <br />0.357 <br />0.321 <br />0.369 <br />Specificity Results: <br />Manufacturer and evaluator claim sensors will respond to any liquid. <br />Manufacturer's Specifications: <br />Manufacturer states that system requires no calibration. <br />Comments: <br />Sensors are reusable. <br />Page 1 of 2 <br />Model 522 Remote Monitoring System: <br />Evaluation indicates that when threshold level of Model 406 Liquid Level Sensor was reached, Model 522 Remote <br />Monitoring System produced (1) an audible and visual alarm and (2) an output signal that was recognized by a <br />Veeder-Root TLS -350 Monitoring System. <br />The TLS -350 Monitoring System produced an alarm within 10 seconds, and displayed and printed a notice of alarm <br />and alarm time. <br />Manufacturer states that the output signal produced by Model 522 Remote Monitoring System can be recognized by <br />other monitoring systems designed to detect this output signal. <br />Model 522 Remote Monitoring System was evaluated only using the Veeder-Root TLS -350 Monitoring System. <br />