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3 Product description
OPTISWITCH 5100 C, 5150 C • Contactless electronic switch
30428-EN-210701
Typical applications are overfill and dry run protection. With its tuning
fork of only 40 mm length, OPTISWITCH 5100 C, 5150 C can also
be mounted e.g. in pipelines from DN 32. The small tuning fork allows
use in vessels, tanks and pipes. Thanks to its simple and robust
measuring system, OPTISWITCH 5100 C, 5150 C is virtually unaf-
fected by the chemical and physical properties of the liquid.
It functions even under difficult conditions such as turbulence, air bub-
bles, foam generation, buildup, strong external vibration or changing
products.
Function monitoring
The electronics module of OPTISWITCH 5100 C, 5150 C continu-
ously monitors the following criteria via frequency evaluation:
•
Strong corrosion or damage on the tuning fork
•
Loss of vibration
•
Line break to the piezo drive
If a malfunction is detected or in case of voltage supply, the electron-
ics takes on a defined switching status, i.e. the contactless electronic
switch opens (safe state).
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 subject to temperature shock
limitations. The frequency changes when the tuning fork is covered
by the medium. This change is detected by the integrated electronics
module and converted into a switching command.
OPTISWITCH 5100 C, 5150 C is a compact instrument, i.e. it can be
operated without external evaluation system. The integrated electron-
ics 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, a pump etc.).
The data for power supply are specified in chapter "
Technical data
".
3.3 Adjustment
The switching condition of OPTISWITCH 5100 C, 5150 C with plastic
housing can be checked when the housing is closed (signal lamp).
With the basic setting, products with a density ≥ 0.7 g/cm³ (0.025 lbs/
in³) can be detected. The instrument can be adapted if products with
lower density are to be measured.
On the electronics module you will find the following display and
adjustment elements:
•
Signal lamp for indication of the switching condition (green/red)
•
DIL switch for sensitivity adjustment
•
Mode adjustment for selection of the switching condition (A/B)
Functional principle
Voltage supply
