Franklin Fueling Systems Tank Sentinel (TS-1001, 2001, 504, 508 & 750) Operators Guide Rev. D - Manual (Page 46)

Tank Sentinel Reports Page 3 - 11 3
Standard (Static) Tank Leak Test REPORT
The data shown on the standard leak test report is:
1) Date and time that the report was produced (this can
be different from the test End Time and Date.
2) Tank name, number, and volume capacity (GAL).
Then the Leak Test Precision & Threshold is shown
(0.1 gph Annual Precision test — the default is the 0.2
gph monthly compliance test).
3) Test Confidence Level (here @ 99%... there is still a
1 % chance that the results are not accurate).
4) The test-START Time and Date
5) The Gross Capacity / percent full value in the tank
6) BEGIN values @ start of test (ie. G
ROSS
and N
ET
)
7) The test-END (finish) Time and Date, and
8) The values @ END of the test (ie. T
EMP
and W
ATER
)
9) Hourly data (time, temperature, & net volume)
10) Slope is the (+/–) rate of change in product volume. It
is the calculated leak rate and is used to determine the
Test Result. Slope is affected by leaks, and by many
other sources of interference.
11) Slope Low and High is the amount of disturbance to the
leak test from temperature changes. Values close to each
other indicate that thermal expansion or contraction was
not a cause of interference. Values that are far apart will
cause an increase or indeterminate test result.
12) Test Results are either: Increase Passed Failed or
Indeterminate (if tests run 8 hours without a definite
result). See Chapter 4 about leak testing.
Slope & Leak Test Results
See the diagram to the left and the Leak Threshold value,
Slope value, and the Test Result line on Tank Leak Test
Reports. Slopes more negative than the threshold value
are reported as Failed, and those positive are reported as
Increase.
- 0.05 gph
- 0.10 gph
+ 0.05 gph
+ 0.10 gph
PASSED
- SLOPE
+ SLOPE
0
INCREASE
FAILED
L e a k T h r e a s h o l d =
L e a k T e s t v a l u e / 2
L e a k T h r e s h o l d f o r :
a 0 . 2 0 g p h M o n t h l y
T e s t = + / - 0 . 1 g p h ,
a n d f o r a 0 . 1 0 g p h
A n n u a l p r e c i s i o n
T e s t = + / - 0 . 0 5 g p h