Endress+Hauser FTS 20 Mode D'emploi page 20

Technical data FTS 20 (NAMUR) types: 52010119, 52010120, 52010121
Measuring system
Switching element
Power supply
Operating current
Reverse polarity protection
Switching angle
Ambient temperature
Ambient pressure
Density of floating switch
Floating body material
E
.. Cable material
Areas of application and mini-
mum cable length between
fixing and floating body
Ex approval
Ex ingress protection
Ex data
Standards
8
Comprising an FTS 20 floating switch and an isolating amplifier, e.g.
Endress+Hauser Nivotester FTL 325N
Inductive proximity switch with switching ball, closed when floating
8.2 V ±2 V
<1.2 mA unswitched; >2.1 mA switched
yes
Switching points top/bottom ±12°, measured to the horizontal
dependent on cable material; PVC, PUR and CSM: -20 ... +70 °C
≤ 3 bar
≥ 0.8 g/cm
3
Polypropylene (PP)
PVC, PUR, CSM, standard length 5 m, cross section 2 x 0.75 mm
PVC: ≥ 50 mm, suitable for water, dirty water, slightly aggressive media
PUR: ≥ 100 mm, suitable for fuels, heating oils, liquids containing oil
CSM: ≥ 100 mm, suitable for acids and alkalis
TÜV 01 ATEX 1709


I I 2G EEx ia II B T5
T5 (T = 70 °C)
a
Voltage Ci 16 V
Current Ii 52 mA
Power Pi 180 mW
Inductance Li 1 mH
Capacitance Ci 153 nF
EN 60947-5-2, EN 50014:1997, EN 50020:1994
2
T4 (T = 70 °C)
a
16 V
72 mA
242 mW
1 mH
153 nF
Endress + Hauser