Patent ID: 7238238

Claim:
A gasification monitor arranged in a gas feeding path between a vaporizer for vaporizing a liquid material or a solid material to produce a processing gas and a processing part where the processing gas is used, the gasification monitor detecting a quantity of mist contained in the processing gas, the gasification monitor, comprising: a first pressure gauge for detecting a first pressure Pq of the processing gas and producing a pressure measurement which is changeable by the quantity of mist contained in the processing gas; a second pressure gauge for detecting a second pressure Pg of the processing gas, wherein the second pressure gauge includes a pressure detecting part that produces a pressure measurement which is not changeable when mist contained in the process gas is adhered to the pressure detecting part, and wherein the pressure detecting part is arranged such that the mist may adhere to it; and a control part for detecting the quantity of mist contained in the processing gas on a basis of a difference ΔP between the first pressure Pq detected by the first pressure gauge and the second pressure Pg detected by the second pressure gauge.