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Does Cold Affect a Propane Tank Level Gauge?
Like the majority of other types of materials, propane is affected by cold temperatures. When the temperature declines, the propane gas contracts. That reduced level of gas in the tank is reflected by the gauge which reflects the level on the tank. Normally, this happens whenever a homeowner checks the gauge in cold weather conditions and sees the amount of the tank level before and after delivery. Depending upon the climate, the level on the tank may not go up as much as expected.

Propane Tank Level Gauge
The gauge on a propane tank shows you what percentage of the tank is full. Typically, tanks are not filled over 80% so as to enable the gas to expand on warm days. For example, a 500 gallon tank, at a reading of 80 percent at normal temperatures reflects around 400 gallons of propane inside the tank. This is about the amount that could be stored.

Normal Temperatures
The website Propane 101, that is operated by the propane industry, considers an exterior temperature of 60 degrees to be the baseline or reference point. For example, if the gauge reads 50 percent of capacity on a day when the temperature is near 60 degrees, then a 500 gallon tank will contain approximately 250 gallons of propane. If the temperature that day is much lower than 60 degrees, the gauge will read lower. Also, if the temperature is a lot higher than 60 degrees, the gauge would actually read higher due to the expansion of the gas.

Effect of Contraction and Expansion
The energy contained or amount of energy contained within a tank would not change as the gas either contracts or expands, based on the propane industry website. The amount of propane itself has not changed, but just the density of the gas has changed.

Cold-Weather Delivery
The homeowner who orders 100 gallons of propane will be given approximately 424 lbs. of propane. With the delivery of 100 gallons, the homeowner with a 1000 gallon propane tank could expect the guage to go up by 10%. These numbers will be accurate if the temperatures were near 60 degrees at the time of delivery. If the delivery took place during colder weather, these chillier temperatures would cause a smaller increase reading on the propane gauge.

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