An electronic balance with a housing that can be put under an above-ambient pressure, for example for the purpose of using the balance in a hazardous environment where a risk of explosion exists, has an inlet for a gas, in particular compressed air. In addition, a coordinated change between an intake manifold inlet control device, for example a throttle, and the outlet control device is used to achieve the rapid cylinder fresh charge control. The light shield member includes a light absorption member to absorb light and to generate heat, a thermal diffusion member to diffuse and radiate the heat, and a base supporting the light absorption member and thermal diffusion member.