The product is suitable for harsh and corrosive environments, measuring non viscous and non caking gas and liquid media with slight corrosiveness. There is a safety partition designed inside the table to protect the safety of the observation surface. The back is equipped with a pressure relief cover to release the internal pressure caused by the rupture of the overload elastic element, enhancing the safety of personnel and facilities. Mainly used in industries such as petroleum, chemical, metallurgy, power, food, medicine, environmental protection, machinery, and shipbuilding.