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3 Product description
Application area
Functional principle
Voltage supply
8
3.2
Principle of operation
OPTISWITCH 5300 C is a point level sensor with tuning fork for point
level detection.
It is designed for industrial use in all areas of process technology and
can be used in liquids. It is particularly suitable for applications with
high temperatures up to 450 °C (842 °F) and high process pressure
up to 160 bar (2320 psig).
Typical applications are overfill and dry run protection. The small
tuning fork allows use in pipelines, containers and tanks of all kinds.
Thanks to its simple and rugged measuring system, OPTISWITCH
5300 C is virtually unaffected by the chemical and physical properties
of the liquid.
It functions even under difficult conditions such as turbulence, foam
generation, buildup, strong external vibration or changing products.
Function monitoring
The electronics module of OPTISWITCH 5300 C continuously moni-
tors the following criteria via frequency evaluation:
•
Strong corrosion or damage on the tuning fork
•
Loss of vibration
•
Break in the vibration drive circuit
If one of these faults is detected, the electronics signals it via a
defined current to the signal conditioning instrument. The connection
cable to the sensor is also monitored for line break and short-circuit.
The tuning fork vibrates at its mechanical resonance frequency of
approx. 1400 Hz. When the tuning fork is submerged in the product,
the frequency changes. This change is detected by the integrated
electronics module, passed on to the processing system as a current
value and converted there into a switching command.
Depending on your requirements, OPTISWITCH 5300 C with two-
wire electronics can be connected to different signal conditioning
instruments. Compatible signal conditioning instruments are listed in
chapter "Technical data".
The data for power supply are specified in chapter "Technical data".
3.3
Operation
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 operating status (green)
•
Control lamp for indication of the switching status (yellow)
•
Control lamp for fault indication (red)
•
DIL switch for sensitivity adjustment
•
Mode switch for selecting the switching behaviour (min./max.)
•
Test key
OPTISWITCH 5300 C • - two-wire
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