How To Read Your Propane Tank Gauge. Because propane is stored in a liquid state under pressure and expands in the presence of heat, we’ll only fill your tank to 80 percent of its water capacity. The warm water, cool hand method.
The majority of our tank gauges are rochester gauges that display to the number 80. the tank will normally be filled to approximately 80% to allow for heat expansion. Since propane expands and contracts inside the tank as outdoor temperatures change, propane tanks are filled to about 80% capacity. So, here i’m showing you how to read the gauge and calculate the exact amount propane the tank has regardless of the capacity.
They estimate the amount of gas left in your tank based on the temperature differences within the tank.
A gauge reading of 10 means that the tank is 10 percent full (almost empty). Since propane expands and contracts inside the tank as outdoor temperatures change, propane tanks are filled to about 80% capacity. Prevent that from happening by checking your tank gauge regularly and calling your propane supplier when the level drops below 30 percent. Your gauge will have numbers on it indicating the percentage.