Patent ID: 6303073
Filing Date: 2001-10-16
Classification: B22D

Abstract:
Metering oven (1) with a vessel (12) for receiving liquid metal and a device for detecting a level of liquid metal in a vessel, a tubular probe (5) being connected to a gas source (10) for discharging a gas from the gas source through the probe and out of its outlet aperture, and a pressure measuring device (9) being provided for detecting a state of pressure inside the probe (5) in dependence on a counter-pressure caused by a level of the liquid metal, wherein the pressure measuring device (9) is a pressure wave switch for detecting a pressure response occurring inside the probe (5) when the probe opening is blocked by liquid metal and to emit a corresponding signal, and in that the probe (5) is securely inserted into the wall of an ascending pipe (3) provided in the vessel (12).