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Issue Date: July 27, 2004
EBW, Inc.
AutoStik II,
AutoStik Jr.
(Magnetostrictive Probe)
AUTOMATIC TANK GAUGING METHOD
| Certification |
Applies only to EBW, Inc. AutoStik II and AutoStik Jr. models sold on or
after March 1, 2004.
Leak
rate of 0.2 gph with PD = 99.9% and PFA = 0.1%.
Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%. |
| Leak
Threshold |
0.1
gph for leak rate of 0.2 gph.
0.05 gph for leak rate of 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.
Other liquids with known coefficients of expansion and density may be
tested after consultation with the manufacturer. |
| Tank
Capacity |
Maximum
of 15,000 gallons.
Tanks less than 95% full may be tested.
Minimum product level required based on tank diameter is as follows:
48" dia/min 12";
64" dia/min 14";
72"dia/min 15";
96" dia/min 17.5";
126"dia/min 21.5".
For other tank diameters, see evaluation report. |
| Waiting
Time |
Minimum
of 6 hours 1 minute between delivery and testing for leak rate of 0.2
gph.
Minimum of 5 hours 18 minutes between delivery and testing for leak rate
of 0.1 gph.
None between dispensing and testing.
There must be no delivery during waiting time |
| Test
Period |
Length
of the test is determined automatically based on quality of test
data.
Average data collection time during evaluation was 5 hours 10 minutes for
leak rate of 0.2 gph.
Average data collection time during evaluation was 5 hours 44 minutes for
leak rate of 0.1 gph.
Test data are acquired and recorded by a microprocessor.
Leak rate is calculated from data determined to be valid by statistical
analysis.
There must be no dispensing or delivery during the test. |
| Temperature |
Probe
contains 5 thermistors to monitor product temperature.
At least one thermistor must be submerged in product during testing. |
| Water
Sensor |
Must
be used to detect water ingress.
Minimum detectable water level in the tank is 0.208 inch.
Minimum detectable water level change is 0.011 inch. |
| Calibration |
Thermistors
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.
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.
AutoStik Jr. can
support up to 4 tanks.
AutoStik II can support up to 8 tanks. |
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EBW, Inc.
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Evaluator:
Ken Wilcox Associates
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3760 Marsh Road
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Tel:
(816) 443-2494
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Madison, WI 53718
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Dates of
Evaluation:
08/05/92,
09/05/97, 08/21/02
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Tel: (800) 225-9787
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E-mail: info@franklinfueling.com |
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URL: www.ebw.com |
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