KROHNE OPTISOUND 3020C 2wire EN - Manual (Page 8)

3.2 Principle of operation
OPTISOUND 3020 C is an ultrasonic sensor for continuous
level measurement. It is suitable for liquids and solids in
virtually all industries, particularly in water and waste water
management.
The transducer of the ultrasonic sensor emits short ultrasonic
pulses to the measured product. These pulses are reflected by
the product surface and received by the transducer as echoes.
The running time of the ultrasonic pulses from emission to
reception is proportional to the distance and hence to the level.
The determined level is converted into an appropriate output
signal and outputted as measured value.
Two-wire electronics 4 … 20 mA/HART for power supply and
measured value transmission on the same cable.
The power supply range can differ depending on the instru-
ment version. The exact range is stated in the "Technical data"
in the "Supplement".
3.3 Adjustment
OPTISOUND 3020 C can be adjusted with two different
adjustment media:
l
the indicating/adjustment module
l
a HART handheld
The entered parameters are generally saved in OPTISOUND
3020 C, optionally also in the indicating/adjustment module.
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 acc. to DIN EN 24180.
The packaging of standard instruments consists of environ-
ment-friendly, recyclable cardboard. For special versions, PE
foam or PE foil is also used. Dispose of the packaging material
via specialised recycling companies.
l
Storage and transport temperature see "Supplement –
Technical data – Ambient conditions"
l
Relative humidity 20 … 85 %
Area of application
Physical principle
Power supply
Packaging
Storage and transport tem-
perature
8 OPTISOUND 3020 C - 4 … 20 mA/HART
Product description
30507
-EN
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