What is used to determine that a cylinder has reached its maximum permitted filling level when filling by weight?

When filling an LP-gas cylinder by weight, a scale is utilized to ensure that the cylinder does not exceed its maximum permitted filling level. The scale accurately measures the weight of the cylinder as it is being filled, allowing the operator to monitor the total weight, which includes both the weight of the empty cylinder and the weight of the liquid gas added. The maximum fill level of an LP-gas cylinder is typically defined in terms of its water capacity, and the correct weight can be calculated based on this capacity. This method is essential for safety, as overfilling a cylinder can lead to dangerous conditions, such as increased pressure and the risk of leakage or bursts.

Using a gauge or meter would not provide the precise weight measurement needed to determine if the filling level is within safe limits. While sensors can play a role in safety and monitoring, they are not specifically used to determine the maximum fill level by weight during the filling process. Hence, the scale serves as the appropriate tool for this task.