The Metryva Chuanyi MTVVF04E Limit Switch is a field instrument designed to detect valve positions within automated control systems. It outputs the valve's open or closed status as a switch signal, which can be received by a programmable controller or sampled by a computer to execute subsequent operations. Additionally, it serves as a crucial component for valve interlock protection and remote alarm indication, making it widely applicable in industries such as petroleum, chemical, and metallurgy, especially in explosion-proof environments.
Three-Dimensional Visual Indicator: Features a high-contrast color design, allowing for all-angle visibility of the valve position.
NAMUR Standard Compliance: Adheres to NAMUR standards, maximizing interchangeability.
Low-Temperature Resilience: Capable of operating in temperatures as low as -50°C, suitable for harsh environments.
Quick-Set Cam Mechanism: Allows for rapid adjustment of the switch cam position without the need for tools.
Multi-Contact Terminal Block: Equipped with an 8-point standard terminal block, supporting connections for up to two sets of solenoid valves with dual wiring ports.
Technical Specifications:
Explosion-Proof Types: Intrinsic safety, intrinsic safety dust, flameproof, and dust enclosure.
Ambient Temperature: -40°C to +80°C; -50°C to +80°C for low-temperature models.
Switch Options:
Inductive proximity switch NJ2-V3-N×2; active 8V DC.
Inductive proximity switch SN3.5-SN×2 (low-temperature model); active 8V DC.
Mechanical switch ×2; 15A/220V AC.
Terminal Block: 8-point.
Electrical Interface: M20×1.5, 1/2NPT, 3/4NPT, among others.
Position Indication: Open—Green; Closed—Red.
Protection Level: IP67.
Applications:
Data Center Application: Provides accurate position feedback for valves in chilled water or cooling fluid pipelines, ensuring proper valve operation and enhancing the reliability of cooling system performance.
The VF04E Limit Switch is extensively used in automated control systems to monitor valve positions, providing critical feedback for process control and safety interlocks. Its robust design and compliance with explosion-proof standards make it suitable for challenging industrial environments.