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Water Boards: LG 113 Page 1 of <br /> Welcome tc, California <br /> Issue Date:August 23, 1999 <br /> Revision Date: March 10,2000 <br /> Pneumercator Company, Inc. <br /> TMS 2000,TMS 3000 <br /> (Magnetostrictive Probe) <br /> AUTOMATIC TANK GAUGING METHOD <br /> Certification Leak rate of 0.2 gph with PD = 95.0% and PFA = 5% for 2 hour test. <br /> Leak rate of 0.2 gph with PD = 99.8% and PFA = 0.2% for 4 hour test <br /> Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 8 hour test. <br /> Leak rate of 0.1 gph with PD = 95.3% and PFA = 4.7% for 7 hour test. <br /> Leak rate of 0.1 gph with PD = 95.8% and PFA = 4.2% for 8 hour test. <br /> Leak 0.1 gph for leak rate of 0.2 gph. <br /> Threshold 0.05 gph for leak rate of 0.1 gph. <br /> A tank system should not be declared tight if the test result indicates a loss that equals or exceeds thi! <br /> threshold. <br /> Applicability Gasoline, diesel, aviation fuel. <br /> Other liquids with known coefficients of expansion and density may be tested after consultation with tl <br /> manufacturer. <br /> Tank Maximum of 20,000 gallons. <br /> Capacity Tank must be between 20 and 95% full. <br /> Waiting Minimum of 8 hours between delivery and testing. <br /> Time Minimum of 20 minutes between dispensing and testing. <br /> There must be no delivery during waiting time. <br /> Test Period Minimum of 2 hours for leak rate of 0.2 gph. <br /> Minimum of 7 hours for leak rate of 0.1 gph. <br /> Test data are acquired and recorded by system's computer. Leak rate is calculated from data determir <br /> to be valid by statistical analysis. <br /> There must be no dispensing or delivery during test. <br /> Temperature Average for product is determined by probe which contains 5 thermistors. <br /> At least one thermistor must be submerged in product during test. <br /> Water Must be used to detect water ingress. <br /> Sensor Minimum detectable water level in the tank is 0.488 inch. <br /> Minimum detectable change in water level is 0.124 inch. <br /> http://www.waterboards.ca.gov/ust/leak_prevention/lgl13/Vendor_Files/pneumereator company a... 9/20/200 <br />