Product Description

The Deeter F/S-FP is magnetic float on a reed switch or Hall Effect sensor stem for control and indication of a liquid level while in a potentially explosive atmosphere.

Features include:

  • ATEX and IECEx approved.
  • Custom length sensor stems up to 4 Metres.
  • Stainless steel 316L housing and wetted components.
  • Up to 7 switch points on one stem.
  • Custom made for mixed normally open/normally closed switches.
  • Suitable for gas and dust environments.
  • IP68 Ingress protection.
  • Voltage free reed switch contacts or Hall Effect sensing technology.
  • M20 or ½”NPT cable entry.
  • Custom mounting options available.
  • Narrow sensor stem and mounting for tanks without internal access.
  • Suitable for high liquid pressures

The F/S-FP holds ATEX & IECEx certification for use in most regions worldwide.

Approval ATEX & IECEx
Applicable Standards ATEX & IECEx
Ex Coding With Mounting Adaptor:
Ex II 1/2G 2D
Ex d IIC (*) Ga/Gb
Ex t IIIC (*) Db IP68
-20°C≤Ta≤+85°CWithout Mounting Adaptor:
Ex II 2 GD
Ex d IIC (*) Gb
Ex t IIIC (*) Db IP68
-20°C≤Ta≤+85°C* Temperature class options to suit

  • environment and process temperatures
  • T5 / T100oC for process temperatures ≤ 85°C
  • T4 / T135oC for process temperatures ≤ 125°C
  • T3 / T200oC for process temperatures ≤ 190°C
Sensor technology Magnetic float with reed switch or Hall Effect
Sensor tube and wetted materials Stainless steel 316L
Connection head material Stainless steel 316L
IP rating with suitable cable gland IP66/68 for indoor or outdoor
Approximate weight
ø12mm stem 1kg +process connector + 0.5kg/Metre
ø8mm stem 1kg +process connector + 0.3kg/Metre
Float Diameter: Specific gravity:
ø12mm stem ø53mm : 0.65
ø8mm stem ø30mm : 0.75
Maximum liquid temperature:
Reed Switch -20 to +85°C
-20 to +125°C
-20 to +190°C
Hall Effect -10 to +45°C
Maximum head temperature -20 to +80°C
Maximum operating pressure 150PSI / 10Bar standard
450PSI / 31Bar optional
Thread connection-Sensor tube ½”-14 NPT
Thread connection-Wiring port ½”-14 NPT or M20X1.5
Connection head height 95mm
Switch Rating
>4 Point Reed Switch 0 to 50Vdc. 1Amp. 50Watts Max
≤4 Point Reed Switch 0 to 240vac. 1Amp. 50Watts max
Hall Effect Open collector 28Vdc Max. 50mA Max
Altitude 2000m Maximum
Pollution Degree (enclosure interior) 2
Installation Category Cat II
Certificate Download ATEX Certificate Download

IECEx Certificate Download

Datasheet Download F/S-FP Datasheet Download
Installation Instructions Download F/S-FP Installation Manual Download