The Fox S.r.l. ZV Series is a versatile mechanical flow switch designed for precise flow monitoring in industrial liquid applications. Its key feature is an easily adjustable operating point, achieved by sliding the connector support along the instrument axis (secured with an M3 locking pin). This adjustability allows for field calibration to meet specific system requirements. The switch provides a reliable SPDT (Single Pole Double Throw) contact output, offering a changeover contact (common, normally open, and normally closed).

Key Features

• Adjustable Setpoint: The switching point is user-adjustable via a sliding connector support, allowing for precise on-site calibration.
• Rugged Construction: The standard body is made of nickel-plated brass, with options for stainless steel (for aggressive media) or plastic (for non-aggressive media).
• Multiple Electrical Connections: Compliant with DIN43650 (M3) and IEC60947-5-2 (M12) standards, providing flexibility for different control systems.
• High Environmental Protection: Rated IP65 according to DIN40050, ensuring dust-tight protection and resistance to low-pressure water jets, suitable for demanding environments.
• ATEX Certification: Available with ATEX II 3G Ex nc IIB T6 Gc certification for use in potentially explosive atmospheres (Zone 2 gas).
• Optional PVC Construction: ZV...PVC models in PVC-U are available for highly corrosive media, with a maximum pressure of 10 bar (availability subject to verification).
• Long Mechanical Life: Rated for 10^6 cycles at 20°C, ensuring long-term reliability in continuous operation.

Installation Requirements

For optimal performance, vertical installation is recommended with fluid flow direction from bottom to top. The instrument must be installed at least 30 mm away from magnetic fields and ferrous parts to ensure accurate switching.

Technical Specifications

• Weight: ZV1-6 models: 0.20 kg; ZV7-8 models: 0.80 kg; ZV9-10 models: 0.94 kg
• Mechanical Life: 1,000,000 cycles at 20°C
• Electrical Connection: DIN43650 (M3) or IEC60947-5-2 (M12)
• Maximum Switching Voltage: 30 V AC/DC
• Housing Material: Nickel-plated brass (standard), optional stainless steel or plastic
• Other Certifications: CU-TR for the Russian market available

Applications

The ZV Series is ideal for flow/no-flow detection in industrial automation, pump protection, cooling circuits, lubrication systems, and hazardous area applications requiring ATEX certification.