porthole
Retired
So, yesterday I filled the Cyclone's first propane tank. The tank was full when I picked up the trailer July 2009 and it ran dry at the Delaware camp out April 2012.
I had weighed the tank at the delivery and marked it on the tank with blue tape. I weigh the tanks at the beginning of each season to make sure we have enough for any given trip.
And I use a spreadsheet I keep on the phone for capacity (see attached).
The operator noticed my blue tape and asked what the numbers were, "date and 54#'s". Told him that was what the tank weighed new, full.
He then bumped up the scale weight (after looking at a chart).
His chart listed a 30 gallon tank as 57+ pounds, which is the same as my calculation of 57.6.
"Full" tanks are really a misnomer, as they are only filled to 80% capacity (volume, not weight). You need room for vapor. Filled to 80% my tank should weigh about 51 pounds. 7.5 gallons full x 80% equals 6 gallons.
So I now wonder how many times I have gotten propane and they were not filled to the 80% full volume.
I never weigh the grill tanks.
I had weighed the tank at the delivery and marked it on the tank with blue tape. I weigh the tanks at the beginning of each season to make sure we have enough for any given trip.
And I use a spreadsheet I keep on the phone for capacity (see attached).
The operator noticed my blue tape and asked what the numbers were, "date and 54#'s". Told him that was what the tank weighed new, full.
He then bumped up the scale weight (after looking at a chart).
His chart listed a 30 gallon tank as 57+ pounds, which is the same as my calculation of 57.6.
"Full" tanks are really a misnomer, as they are only filled to 80% capacity (volume, not weight). You need room for vapor. Filled to 80% my tank should weigh about 51 pounds. 7.5 gallons full x 80% equals 6 gallons.
So I now wonder how many times I have gotten propane and they were not filled to the 80% full volume.
I never weigh the grill tanks.