HF660-Level Switches

• Hermetically sealed reed switch contacts are actuated by magnets bonded inside the float
• Change from normally open (N.O.) to normally closed (N.C.) contacts in 10 seconds or less by reversing the orientation of the float on the stem
• Switch contact ratings are suitable for direct connection to most solid state control systems and alarm/monitoring devices
• Simple relay interfaces can be employed for higher current control applications
• Switch mounts easily at the top, bottom or intermediate levels in tanks and vessels
• Mounts directly in a 1/8" NPT fitting for interior mounting
• Where exterior mounting or access is required, special adapters are available as option
• To mount at intermediate levels, combine fittings shown with any length of pipe
• Electrical Ratings: Model HF660: AC - 25 VA, 1.0 A, 200 V; DC - 10W, 1.0 A, 200 V

Specifications

• Operating Temperature: 220°F (105°C)

Additional Specifications

• Float Material: Buna-N and Epoxy
• Stem Material: 316 Stainless Steel
• Max. Temp: 220°F (105°C)
• Max Pressure: 150 PSIG (10 bar)
• Min Sp. Gr.: 150 PSIG (10 bar)
• Deadband: 1/16" (2 mm)