QFS-20 & QFS-21 float switches have stainless steel floats and one or two reed contacts.
Properties
Protection class EN60529
:
IP68
Material Float
:
VA 1.4571
Material hose
:
Edelstahlwellschlauch (1.4404) mit Edelstahldrahtumflechtung (1.4301)
Operating temperature
:
max. + 150 °C
media density
:
ρ ≥ 0,8g/cm³
Switching system
:
Reed-Schalter
Contact
:
Wechsler, NO, NC
Switching voltage
:
4...250 V AC/DC
Switching current
:
1 mA ...1 A
Switching capacity
:
max. 1A, 60 VA/60 W
Switching hysteresis
:
ca. 100 mm
Switching angle
:
ca. + 20° / – 20°
Operating pressure (QFS-20)
:
max. 15 bar
Operating pressure (QFS-21)
:
max. 6 bar
EE-24
Ex-Electrode-single with integrated safety barrier
When using a threshold detection electrode with integrated safety barrier, exceeding or falling below a threshold in conductive fluids in Ex-Zone 0 (category 1) can be detected.
Properties
connection thread
:
G 1/2” Standard | G 3/4” | G1”
Cable
:
TPK (Standard) | SIL (Silikon) | FEP (Teflon)
rod length
:
max. 6.000 mm
Operating pressure
:
max. 40 bar
Material
electrode body
:
Edelstahl 1.4571
Process connection
:
Edelstahl 1.4571
Coating
:
PTFE
electrode rod
:
Edelstahl 1.4571
on request
:
Hastelloy C | Tantal
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