Knowing when cooking gas is finished primarily depends on the type of gas supply you are using. There are two common types:
LPG (Liquefied Petroleum Gas): LPG is commonly used in gas cylinders for cooking. To determine if the gas is finished in an LPG cylinder, you can follow these methods:
Check the Weight: Most LPG cylinders have a tare weight (empty weight) printed on them. Weighing the cylinder and subtracting the tare weight will give you an approximate idea of the remaining gas. You can also use a bathroom scale to check the weight.
Hot Water Test: Another method is to pour hot water down the side of the gas cylinder. Run your hand along the surface, and you'll feel a temperature change where the gas ends and the empty space begins. However, be cautious not to burn yourself with the hot water.
Float Gauge: Some gas cylinders come with a built-in float gauge that indicates the level of gas remaining. It may be a small indicator or a dial on the cylinder.
Tilt Test: Tipping the gas cylinder gently can sometimes give you an idea of the gas level. However, this method is less accurate and not recommended as a primary method of checking.
Natural Gas from the Utility Company: If your kitchen is connected to a natural gas supply from a utility company, determining when the gas is finished is not a concern. Natural gas supply is continuous and does not come in limited quantities like LPG cylinders.
To avoid running out of gas unexpectedly, it's best to keep track of your usage patterns and monitor the gas cylinder's weight or any available gauges regularly. Make sure to have a spare gas cylinder on hand so that you can switch to it when the current one is empty. Additionally, if you're using LPG cylinders, many gas suppliers offer services where they can replace empty cylinders with full ones on a scheduled basis or on request.