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*7ML19985KS01*
SITRANS LVL200S - Operating Instructions
33837-EN-161128
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, SITRANS LVL200S is virtually unaffected 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 SITRANS LVL200S continuously 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 power failure, the electronics
takes on a defined switching condition, i.e. the output is open (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.
SITRANS LVL200S is a compact instrument, i.e. it can be oper-
ated 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, a pump etc.).
The data for power supply are specified in chapter "
Technical data
".
3.3 Adjustment
With the factory setting, products with a density ≥ 0.7 g/cm³
(0.025 lbs/in³) can be detected. The instrument can be adapted to
products with lower density.
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)
3.4 Storage and transport
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable carton material. The sensing element is additional-
ly protected with a cardboard cover. For special versions, PE foam or
Functional principle
Voltage supply
Packaging
Siemens Controls
