The Limit Switch Box is used in industrial automation systems for position verification. This device is designed to indicate whether a valve is in the open or closed position. At the same time, it enables the transmission of electrical signals to PLC or DCS systems, allowing operators to receive information remotely. The visual position indicator allows for direct observation in the field. In addition to monitoring, it also supports system safety.
Operating Principle and Usage
The Limit Switch Box is mounted on the valve shaft to detect mechanical movement. The mechanical position is converted into electrical signals and sent to the control systems. This process is carried out in integration with Namur directional valves. It also plays a supportive role in positioner systems to ensure signal accuracy. During application, visual feedback is critically important for the operator. However, in some cases, more advanced positioning technologies may also be required.
Where Is It Used?
This product is widely preferred in the chemical, petrochemical, and food industries. Its use with actuated valves enhances process safety. It can also be safely employed in water treatment, power generation, and HVAC systems. Furthermore, it is compatible with control devices such as rotary positioners. In industrial systems, it reduces the need for manual operator intervention, as the visual indicator allows for rapid on-site response.
Technical and Structural Features
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Body Material: Die-cast aluminum
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Seal: EPDM, providing high tightness
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Bolts: Stainless steel AISI 304
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Protection Class: IP67, providing resistance to dust and water
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Mounting Standard: Compatible with Namur VDI/VDE 3845
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Indicator: Visual monitoring is possible through a transparent plastic housing
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Temperature Range: Operates without performance loss between -20 °C and 80 °C
Why Is It Preferred?
The Limit Switch Box offers long-lasting service due to its simple design and durable body. It can also be easily integrated with electric actuator systems. This device provides both economical and functional solutions, supporting production processes. Thanks to its high protection class, it operates reliably under harsh field conditions. For more detailed information, you can visit the Unox product catalog.
limit switch box
