Dwyer

Level Switches

Model: HF661

Mfr. No.: F7-SS2

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  • Level Switches - Dwyer F7-SS2

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Description

  • 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: HF661: AC - 25 VA, 1.0 A, 200 V; DC - 10W, 1.0 A, 200 V

Specifications

Operating Temperature

300°F (149°C)

Float Material

316 Stainless Steel

Stem Material

316 Stainless Steel

Max. Temp

300°F (149°C)

Max Pressure

450 PSIG (31 bar)

Min Sp. Gr.

0.75

Deadband

1/16" (2 mm)

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