Issue Date: March 3, 2000
Revision Date: March 10, 2000 

Advanced Telemetrics, Ltd.

Model 1100LD Version 1.07


Certification Leak rate of 0.2 gph with PD = 98.9% and PFA = 1.1%.
Leak Threshold 0.1 gph.
A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this threshold.
Applicability Gasoline, diesel, aviation fuel, fuel oil #4.
Tank Capacity Maximum of 30,000 gallons.
Tanks less than 95% full may be tested.
Minimum product level required is 10 inches.
Waiting Time Determined automatically based on quality of tank data.
Average during evaluation was 8 hours, 56 minutes between delivery and testing.
Dispensing during waiting time may extend waiting time.
There must be no delivery during waiting time.
Test Period Determined automatically based on quality of tank data.
Average during evaluation was 3 hours, 39 minutes.
Test data are acquired and recorded by a microprocessor.
There must be no dispensing or delivery during test.
Temperature Average for product is determined by probe containing 5 or more IC (solid state) temperature sensors.
At least one IC temperature sensor must be submerged in product during test.
Water Sensor Must be used to detect water ingress. Minimum detectable water level in the tank is 0.5 inch.
Minimum detectable change in water level is 0.03 inch.
Calibration IC (solid state) temperature sensors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions.
Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a probe used in each tank and the siphon is broken during testing.
Evaluated in automatic mode where a test is run whenever conditions in tank are quiet for a sufficient amount of time.
If test is run manually, vendor recommends waiting at least 7 hours after delivery and allowing the automatic tank gauge to determine minimum test period to avoid inconclusive results.
Tests only portion of tank containing product.
As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure).
Consistent testing at low levels could allow a leak to remain undetected.
EPA leak detection regulations require testing of the portion of the tank system which routinely contains product.


Advanced Telemetrics, Ltd.

Evaluator:  Ken Wilcox Associates

PO Box 90413

Tel:  (816) 443-2494

San Antonio TX 78209

Date of Evaluation:  04/03/98

Tel:  (800)-382-1482  

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