Float Switches

Float Switches


Float Switches are vane/paddle design used to detect flow/no-flow condition in a flow line. With sufficient differential pressure upstream and downstream of a flow vane, fluid flow is established. Increase in fluid flow moves paddle towards a side, which in turn moves a magnetic sleeve, attached through a connecting link, upwards inside a process seal pipe. When this magnetic sleeve enters the flux zone, a permanent magnet swings towards the seal pipe. This movement actuates a micro switch (NO-NC-COM) changeover contacts and vice-versa.

  • Enclosure: cast aluminium, epoxy powder coated (SS/MS on request)
  • Flameproof to IS: 2148, Gr.IIA & IIB or Gr.IIC, temperature class T6
  • Weatherproof to IS: 13947; IP65, IP66 (IP67 on request)
  • Mounting: on-line (Tapping of 2” flanged pipe with 100 mm length)
  • Mounting: on-line (1", 1½" or2” BSPM / NPTM on welded Socket)
  • Adjustment: internal
  • Element: flow vane/paddle, 25, 33mm x length of pipe ID
  • Material: SS-vane/paddle
  • Switch: SPDT snap acting micro, two SPDT optional
  • Rating: up to 5A 250VAC / 5A 24VDC / 0.5A 110VDC
  • Contact: silver/gold plated/hermetically sealed
  • Differential: fixed minimum < 20%
  • Repeatability: ± 2%
  • Temperature: -10° to +100° C
  • Process Connection: 1½", 2”Flange (ANSI 150#, 300#, 600# Optional) 2” BSPM / NPTM
  • Cable entry: ¾”ETF, ½”NPTF (Others through adapter)

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