Does Cold Actually Affect a Propane Tank Level Gauge?
Propane is like the majority of other types of materials in that it is affected by cold temperatures. The propane gas contracts as the temperature declines. That reduced level of gas inside the tank is reflected by the gauge which reflects the tank level. Normally, this occurs whenever a homeowner checks the gauge in cold conditions and sees the amount of the tank level before and after delivery. Depending upon the climate, the tank level may not go up as much as anticipated.
Propane Tank Level Gauge
The gauge on a propane tank shows you what fraction of the tank is full. Normally, tanks are not filled over 80% so as to enable the gas to expand during warm days. For example, a 500 gallon tank, at a reading of 80 percent at normal temperatures reflects about 400 gallons of propane inside the tank. This is roughly the amount that could be stored.
Normal Temperatures
The website Propane 101, that is managed by the propane industry, considers an exterior temperature of 60 degrees to be the reference or baseline point. For instance, if the gauge reads 50% of capacity on a day when the temperature is close to 60 degrees, then a 500 gallon tank would have around 250 gallons of propane. If the temperature that same day is much lower than 60 degrees, the gauge would read lower. Also, if the temperature is a lot higher than 60 degrees, the gauge will actually read higher because the gas expanded.
Effect of Contraction and Expansion
The energy contained or amount of energy contained inside a tank will not change as the gas either expands or contracts, according to the propane industry website. The amount of propane itself has not changed, but only the density of the gas has changed.
Cold-Weather Delivery
If a homeowner orders 100 gallons of propane to be delivered, they would be given 424 pounds of propane. If the homeowner has a 1000 gallon propane tank, they may expect the gauge to go up by 10% with the delivery of 100 gallons. These numbers will be correct if the temperatures were close to 60 degrees at the time of delivery. If the delivery happened during colder weather conditions, these chillier temperatures would result in a smaller increase reading on the propane gauge.