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State Water Resources Contro d <br />Home -i► Water Issues ,-* Programs -30 Ust -3U Leak Prevention .-* Lg113 * Vendors <br />ProgramsUST <br />Issue Date: June 5, 1998 <br />Revision Date: April 8, 2011 <br />Page 1 of 2 <br />Veeder-Root <br />Dispenser Pan Sensor 847990-001 and Differentiating Dispenser Pan Sensor 847990-002 with <br />Dispenser Control Interface <br />INTERSTITIAL DETECTOR (LIQUID -PHASE) <br />Detector: <br />Output type: qualitative <br />Sampling frequency: continuous <br />Operating principle: product permeable, reed switch/float <br />Test Results: <br />*California requires annual certification of all leak detection equipment. The certification of <br />discriminating sensors should include functional testing of both water and product detection <br />capabilities. <br />Model 847990-002: This sensor can only respond to liquid directly in contact with the detection <br />element, and is unable to detect a product release floating on an existing pool of water whose <br />height exceeds the level of the detection element. <br />polymer strip float switch <br />unleaded gasoline diesel* water <br />Dispenser Pan Sensor 847990-001 <br />Detection time (sec) <1 <1 <1 <br />Minimum product level (in) 1.71 1.66 1.62 <br />Precision (in) 0.006 0.004 0.008 <br />Differentiating Dispenser Pan Sensor <br />847990-002 <br />Minimum product thickness (in) <br />0.06 <br />0.06 <br />N/A** <br />Minimum product level (in) <br />0.03 <br />0.06 <br />6.39 <br />Precision (in) <br />N/A*** <br />N/A*** <br />0.008 <br />htto://www.waterboards.ca.gov/water issues/programs/ust/leak_prevention/lg113/vendor... 12/26/2014 <br />