If you have pressurized piping in your underground storage tank system, you either have a mechanical or an electronic line-leak detector. Which one do you have? The Veeder Root TLS 450 PLUS can tell us.
Go to Menu → Reports → Environmental.
If you see Line Leak, that means you have an electronic line leak detector. Veeder Root calls it the “PLLD”, or pressurized line leak detector.
Tap on Line Leak to get line test results for each line. PLLD under Test Method shows it is an electronic line leak detector. You can see the number of times tested over the past 24 hours. So we can see in this case, there is NOT a catastrophic leak of at least 3 gallons per hour in the underground piping.