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Stte Water Resources Controlard Page 1 of 2 <br />Home >> Water Issues > Programs >> Ust --» Leak Prevention ­>> Lg113 -.» Vendors <br />USTPrograms - LG 113.................................................................... .................. ....................... <br />..... <br />Issue Date: August 28, 1998 <br />Revision Date: April 8, 2011 <br />Veeder-Root <br />TLS -300, 300i, TLS -350 Series, TLS -450 Series, Red Jacket ProMax and ProPlus with <br />Discriminating Dispenser Pan Sensor 794380-322, <br />Discriminating Containment Sump Sensor 794380-352 <br />INTERSTITIAL DETECTOR (LIQUID -PHASE) <br />Detector: <br />Output type: <br />qualitative <br />Sampling frequency: <br />continuous <br />Operating principle: <br />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 794380-322 and 794380-352: Currently the SWRCB UST Program staff discourages the use of <br />polymer strip discriminating sensors at new installations in California. This is due to concerns about the <br />impact that repeated/prolonged exposure to hydrocarbons may have on the sensor's ability to alarm <br />and recover from alarm reliably. Since current evaluation protocols do not address this issue, no new <br />Dalvmer striD sensors should be installed until new evaluation protocols are in place. <br />polymer strip float switch <br />Discriminating Dispenser <br />Pan unleaded water <br />Sensor 794380-322 gasoline diesel* high** low** <br />Response time (sec) <br />—10 min <br />2-12 hrs <br /><1 <br /><1 <br />Recovery time (sec) <br />N/A*** <br />N/A <br /><1 <br /><1 <br />Lower detection limit - height <br />N/D*** <br />N/D <br />7.66 <br />1.37 <br />(in) <br />Lower detection limit - <br />0.005 <br />0.005 <br />N/A <br />N/A <br />thickness (in) <br />Discriminating Containment <br />Sump <br />Sensor 794380-352 <br />Response time (sec) <br />—10 min <br />2-12 hrs <br /><1 <br /><1 <br />Recovery time (sec) <br />N/A <br />N/A <br /><1 <br /><1 <br />Lower detection limit - height <br />N/D <br />N/D <br />12.28 <br />1.35 <br />(in) <br />http://www.waterboards.ca.gov/water_issues/programs/ust/leak—Prevention/Ig 113/vendor... 11112/2015 <br />