It is designed for industrial use in all areas of process
technology and is used in liquids.
Typical applications are overfill and dry run protection.With a
tuning fork of only 40 mm length,OPTISWITCH 5200 C,5250
Ccan be also mounted,e.g.in pipelines from DN 25.The
small tuning fork allows the use in vessels,tanks and pipes.
Thanks to its simple and robust measuring system,OPTI-
SWITCH 5200 C,5250 Cis virtually unaffected by the
chemical and physical properties of the liquid.
It functions also under difficult conditions such as turbulence,
air bubbles,foam generation,buildup,strong external vibration
or changing products.
Fault monitoring
The electronics module of OPTISWITCH 5200 C,5250 C
monitors continuously the following criteria via the frequency
evaluation:
lstrong corrosion or damage of the tuning fork
lno vibration
lline break to the piezo drive
If a fault is detected or in case the power supply fails,the
electronics takes on a defined switching condition,i.e.the
output transistor blocks (safe condition).
OPTISWITCH 5200 C,5250 Cfulfills the requirements of
IEC 61508 and 61511 of SIL2(see Supplement).
The tuning fork is piezoelectrically energised and vibrates at its
mechanical resonance frequency of approx.1200 Hz.The
piezos are fixed mechanically and are hence not subjected to
temperature shock limitations.The frequency changes if the
tuning fork is covered by the medium.This change is detected
by the integrated oscillator and converted into a switching
command.
OPTISWITCH 5200 C,5250 Cis a compact instrument,i.e.it
can be operated without external evaluation system.The
integrated electronics evaluates the level signal and outputs a
switching signal.With this switching signal,a connected
device can be operated directly (e.g.a warning system,aPLC,
a pump etc.).
The exact range of the power supply is stated in the Technical
data in the Supplement.
Physical principle
Power supply
8OPTISWITCH 5200 C,5250 C-with transistor output
Product description
30432-EN-050622
