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California Edition: September 1997 <br />Gilbarco Environmental Products <br />EMC Environmental Management Console <br />EMC Basic Monitoring System Tank Monitor 2.1, 3.1, PAO265XXX0000 <br />(Magnetostrictive ProB-eTj <br />AUTOMATIC TANK GAUGING SYSTEM <br />Certification: Leak rate of 0.2 gph with PD=99% and PFA=0.1 %. <br />Leak Threshold: 0.093 gph. A leak is declared if the output of the measurement system equals or <br />exceeds this threshold. <br />Applicability: Gasoline, diesel, aviation fuel, and solvents. <br />Tank Capacity: Maximum of 15,000 gallons. <br />Tank must be between 50 and 95% full. <br />Waiting Time: Minimum of 8 hours, 18 minutes between delivery and testing. <br />There must be no dispensing or delivery during waiting time. <br />Test Period: Minimum of 2 hours. <br />Test data are acquired and recorded by the system's computer. <br />Leak rate is calculated from the difference between the first and last data collected. <br />There must be no dispensing or delivery during test. <br />Temperature: Average for product is determined by a minimum of 5 thermistors. <br />Water Sensor: Must be used to detect water ingress. <br />Minimum detectable water level in the tank is 0.544 inch. <br />Minimum detectable change in water level is 0.027 inch. <br />Calibration: Thermistors and probe must be calibrated in accordance with <br />manufacturer's instructions. <br />Comments: Not evaluated using manifold tank systems. <br />Tests only portion of tank containing product. <br />As product level is lowered, leak rate in a leaking tank decreases (due to <br />lower head pressure). Consistent testing at low levels could allow a leak to remain <br />undetected. <br />California regulations require at least one test per month after routine <br />product delivery or when the tank is filled to within 10% of the highest <br />operating level during the previous month. <br />Gilbarco Environmental Products Evaluator: Midwest Research Institute <br />7300 W. Friendly Ave. Tel: (816) 753-7600 <br />Greensboro, NC 27420 <br />Tel: (910) 547-5000 y Date of Evaluation: 05/14/93 <br />107 <br />Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of <br />the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and regulations. <br />