Issue Date: December 16, 2020

Pneumercator Company, Inc.

TMS4000 and TMS4000M
(MP450 Series Magnetostrictive Probe)


Certification Leak rate of 0.2 gph with PD = 97.13% and PFA = 2.87% for 2 hour test. (20,000 gallon tank)
Leak rate of 0.2 gph with PD = 99.17% and PFA = 0.83% for 8 hour test. (30,000 gallon tank)
Leak rate of 0.1 gph with PD = 95.25% and PFA = 4.75% for 8 hour test. (20,000 gallon tank)
Leak Threshold 0.05 gph for leak rate of 0.1 gph
0.1 gph for leak rate of 0.2 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, solvents, waste oil, bio-diesel and ethanol blends compatible with probe floats.
Tank Capacity Maximum of 30,000 gallons for leak rate of 0.2 gph
Maximum of 20,000 gallons for leak rate of 0.1 gph
Tank must be between 20 and 90% full.
Waiting Time Minimum of 8 hours between delivery and testing.
Minimum of 5 minutes between dispensing and testing.
There must be no delivery during waiting time.
Test Period Minimum of 2 hours (0.2 gph leak rate / 20,000 gallon tank)
Minimum of 8 hours (0.2 gph leak rate / 30,000 gallon tank)
Minimum of 8 hours (0.1 gph leak rate / 20,000 gallon tank)
Test data are acquired and recorded by systemís computer.
Leak rate is calculated from data determined to be valid by statistical analysis.
There must be no dispensing or delivery during test.
Temperature Average for product is determined by probe which contains 5 thermistors.
At least one thermistor must be submerged in product during test.
Water Sensor Must be used to detect water ingress.
Minimum detectable water level in the tank is 0.488 inch.
Minimum detectable change in water level is 0.124 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.


Pneumercator Company, Inc.

Evaluator:  Ken Wilcox Associates

1785 Expressway Drive North

Tel:  (816) 443-2494

Hauppauge, NY 11788

Date of Evaluation:  09/14/2020; 09/16/2020; 09/22/2020

Tel: (800) 209-7858, (631) 293-8450 x112  



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