Description

The Limit Switch Box is an essential component in industrial automation systems, designed to accurately monitor and confirm the valve position, whether fully open or fully closed. The device converts the actuator’s mechanical movement into electrical signals that are transmitted to control systems such as PLC and DCS, enabling efficient remote monitoring and control.

It also features a highly visible position indicator that allows operators to verify the valve status directly on-site, improving system safety while simplifying operation and maintenance.

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Features

* Accurate monitoring of valve open and closed positions.
* Electrical feedback signals for PLC and DCS control systems.
* Clear visual position indicator.
* Rugged design suitable for harsh industrial environments.
* Easy installation in accordance with NAMUR VDI/VDE 3845.
* Compatible with rotary pneumatic actuators.
* IP67 protection against dust and water ingress.
* Low maintenance requirements and long service life.

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Applications

The Limit Switch Box is widely used in:

* Chemical industries.
* Petrochemical plants.
* Food and beverage processing.
* Pharmaceutical industries.
* Water treatment facilities.
* Power generation plants.
* HVAC systems.
* Automated valve control systems.
* Steam, air, and gas pipelines.

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Technical Specifications

* Housing: Die-Cast Aluminum.
* Seal Material: EPDM.
* Fasteners: AISI 304 Stainless Steel.
* Protection Class: IP67.
* Mounting Standard: NAMUR VDI/VDE 3845.
* Position Indicator: Transparent cover with Open/Close visual indicator.
* Operating Temperature: -20°C to +80°C.

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Performance Advantages

The Limit Switch Box provides accurate and reliable valve position feedback, helping improve operational efficiency while reducing the risk of operating errors. It enhances system safety by enabling continuous remote monitoring and minimizing the need for manual valve inspections.

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Installation & Maintenance

The unit is designed for direct mounting on pneumatic actuators in accordance with the NAMUR standard, ensuring quick and easy installation. Periodic inspection of the electrical connections, seals, and transparent position indicator is recommended to maintain reliable operation and long-term performance.

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Why Choose UNOX Limit Switch Boxes?

UNOX Limit Switch Boxes are manufactured to high international quality standards, providing reliable valve position monitoring across a wide range of industrial applications. Their durable construction, easy integration with modern automation systems, and dependable performance make them the ideal choice for industrial valve automation and process control.