TC Fluid Magnetic Float Level Switch (Vertical)

TC Fluid Magnetic Float Switch is a float with a permanent magnet moves reliably along with the liquid level on a guide tube. Within the guide, tube is fitted with a reed contact (inert gas contact), which is energized, through the non-magnetic walls of the float and guide tube, by the approach of the float magnet.

By using a magnet and reed contact the switching operation is non-contact, free from wear and needs no power supply. The contacts are potential-free. Magnetic float switches are also available with multiple switch points.

The switch functions always refer to a rising liquid level: normally open, normally closed, or change-over contact. Through the use of a float for a max. of 2 switch points a bistable switch operation can be achieved, meaning that the switching status also remains available, when the filling level continues to rise above or drop below the switch point.

The float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning, and operation are low.

TC Fluid Magnetic Float Switch Features

  • Large range of application due to the simple, proven functional principle
  • For harsh operating conditions, long service life
  • Operating limits:
    – Operating temperature: T = -196 … +350 °C
    – Operating pressure: P = Vacuum to 40 bar
    – Limit density: ρ ≥ 300 kg/m3
  • Wide variety of different electrical connections, process connections and materials
  • Explosion-protected versions

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TC Fluid Magnetic Float Switch Applications

  • Level measurement for almost all liquid media
  • Pump and level control and monitoring for distinct filling levels
  • Chemical, petrochemical, natural gas, offshore, shipbuilding, machine building, power generating equipment, power plants
  • Process water and drinking water treatment, food and beverage industry
    Process connection, guide tube and float from stainless
    steel 1.4571, plastic or Buna
  • Universal signal processing: Connection direct to a PLC is possible, NAMUR connection, signal amplification / contact protection relays
  • Works independently of foaming, conductivity, dielectricity, pressure, vacuum, temperature, vapours, condensation, bubble formation, boiling effects and vibrations.
  • Multiple functionality in a single instrument – up to 8 potential-free contacts
  • Exact repeatability of the switch points
  • Magnetic float switches qualify as passive electrical equipment in accordance with IEC 60079-11 and can be installed in “zone 1” hazardous areas without certification, so long as the equipment is operated in a certified intrinsically safe circuit with a minimum explosion protection of Ex ib.

Model Overview

Model Description of the version Approval with-   Ex i out Ex d GL ABS DNV 3-A CE
FLS-SE Standard with cable, safety extra-low voltage x x
FLS-SF Standard with cable, low voltage x x x
FLS-SA Standard with case or connector,  voltage x x x x x
FLS-SB Standard with case or connector, x x x x
safety extra-low voltage x x x x x
60 Intrinsically safe, Ex i
AL-ADF Flameproof enclosure, Ex d x x
FLS-ME Miniature with cable, safety extra-low x
voltage x
FLS-MB Miniature with case or connector, low voltage
FLS-PF with cable, low voltage x
FLS-PA with case or connector, low voltage x x
FLS-HE with cable, safety extra-low voltage x
FLS-HA with case, low voltage x x
FLS-HA3 with case, low voltage x x
Ex approvals
Explosion protection Ignition protection type Model Zone Approval number
ATEX Ex i 60 Zone 0, gas KEMA 01 ATEX1053 X II 1/2G Ex ia IIC T3 … T6
ATEX + GL Ex i + GL 60 Zone 0, gas KEMA 01 ATEX1053 X II 1/2G Ex ia IIC T3 … T6 + GL – 96
716 – 95 HH
ATEX Ex d AL-ADF Zone 1, gas/dust TÜV 13 ATEX 7399 X II 2G Ex d IIC T6 Gb / II 2 D Ex tb IIIC
T80 °C Db
IECEx Ex d AL-ADF Zone 1, gas/dust IECEx TUR 09.0002X -40 °C <= Ta <= +55 °C Ex d IIC T6 Ex
tD A21 IP 65 T80 °C

Reference: tc-fluidcontrol.com

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