发明授权
US07275702B2 Valve unit for an electrostatic coating installation 有权
用于静电涂层安装的阀门单元

Valve unit for an electrostatic coating installation
摘要:
The main needle valve of an electrostatic atomizer has an opto-electronic sensor device with optical waveguides whose faces are opposite a reflecting element of a component moveable with the valve needle for potential-free switch position interrogations.
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