QFS-3X

Mercury-free float switch with µ-switch

Features

EX IP68

product family

level measurement

product class

Point Level Measurement

suitable for

fluids

measurement principle

Schwimmer


Special characteristics

  • Optionally: Ex-certification for Ex-Zone 1 (Cat. 2) according to ATEX

Description

Technical Data

Properties
Protection class EN60529
IP 68
Cable entry
PVC , PTFE bzw. PVDF
Conductor cross-section
3 x 0,75 mm², PUR 3x 0,5mm²
Operating pressure cylinder
max. 1 bar
Operating pressure sphere
max. 2 bar
Switching system
µ-Schalter
Contact
Wechsler, NO, NC
Material Float
QFS-30
PPH (Polypropylen)
QFS-31
PPH (Polypropylen)
QFS-34
PE (Polyethylen)
Cable
TPK
PVC Basis Ø 5,9 mm
TPKV
PVC verstärkt Ø 7,3 mm
PUR
Polyurethan Ø 5,4 mm
SIL
Silikon Ø 6,4 mm
FEP
Teflon Ø 4,0 mm
AEM
Ethylen-Acrylat-Kautschuk
Cable length between float & attachment
TPK
70 mm
TPKV
90mm
PUR
100mm
SIL
80 mm
FEP
110 mm
AEM
abhängig vom Innenkabel
Operating temperature
TPK(V), AEM
max. + 60 °C
PUR
max. + 70 °C
Silicone,Tefloncable with PE float
max. + 80 °C
Silicone, Teflon cable with PP float
max. + 85 °C
MaterialDensity
QFS-31
≥≥ 0,6 g/cm³
QFS-34
≥≥ 0,75 g/cm³
QFS-30 TPK(V) cable
≥≥ 0,85 g/vcm³
QFS-30 PUR cable
≥≥ 0,95 g/cm³
QFS-30 SIL cable
≥≥ 0,90 g/cm³
QFS-30 FEP cable
≥≥ 0,95 g/cm³
QFS-30AEM cable
≥≥ 0,90 g/cm³

QFS-3X configuration

QFS-3 1 - 2 - 3 - 4 - 5 - 6 - 7

1 Schwimmertyp

  • 0 : Zylinder Ø 29 mm (PP)
  • 1 : Kugel Ø 90 mm (PP)
  • 4 : Zylinder Ø 50 mm (PE)

2 Kontakt

  • W : Wechsler
  • NO : aufschwimmend schließend
  • NC : aufschwimmend öffnend

3 Schaltkontakt

  • 0 : Silberkontakt 1,5 A
  • 1 : Goldkontakt
  • 2 : universeller µ-Schalter
  • 5 : Silberkontakt 3 A

4 Hysterese

  • X : keine Hysterese
  • H : mit Hysterese

5 Kabelmaterial

  • TPK : PVC Basis
  • TPKV : PVC Basis verstärkt
  • PUR : Polyurethan
  • SIL : Silikon
  • FEP : Teflon
  • AEM : Ethylen-Acrylat-Kautschuk

6 Kabellänge

  • 01 : 1m
  • 02 : 2m
  • XX : Länge in m (bitte angeben)

7 EX

  • 00 : kein EX
  • EX : Ex II 2G Ex ib IIB T4 Gb

Further product information

These float switches are characterised by their switching system which works without mercury. The switching system consists of a µ-switch which is operated by a ball and which switches with an angle of approx. +3° / +12°  ( without hysteresis) and with an angle of approx.  (with –26° / +28°  additional hysteresis).

Documents and Downloads

Our application engineers advise you personally, comprehensively and professionally!

Simply contact us by phone or e-mail!

Call us right away!

+49-6251-8462-0

contact form

Logo of Fluid.iO Sensor + Control

Fluid.iO
Sensor + Control
GmbH & Co. KG

An der Hartbrücke 6
64625 Bensheim
Tel.: +49-6251-8462-0
E-Mail: info@fluidio.de