How To Read Propane Tank Pressure Gauge. Your tank’s percentage gauge is located under the lid of your propane tank. Reading your propane gas gauge is not complicated.
The float gauge in a propane tank. If the gauge reads 50% on a 250 gallon propane tank, the tank has approximately, 125 gallons of propane. And when you read a tank gauge, that tells you the amount of liquid left inside.
If the gauge reads 40 percent, your tank is half full.
As the pressure in the tank decreases, some of the liquid propane will change back to a gaseous form until the pressure rises again. This propane tank gauge again works with qcc1/type 1 connectors. Your tank’s percentage gauge is located under the lid of your propane tank. If your gauge shows 20%.