KROHNE OPTISOUND 3040 C Specifications
Technical Data Sheet
KROHNE 01/2006 7.02544.22.00
©
CMD
OPTISOUND 3030C-3050C
Ultrasonic Level Gauge
for solids
●●
Level measurement during processing and
storage of solids
●●
Level indication of solids in silos and hoppers
●●
Level measurement in stone crushes
●●
Profile measurement on conveyor belts
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions
Subject to change without notice.
Contents
Contents
1 Description of the measuring principle......................... 3
2 Type overview............................................ 6
3 Mounting information ...................................... 8
4 Electrical connection
4.1 General requirements ................................... 14
4.2 Supply voltage ........................................ 14
4.3 Connection cable ...................................... 14
4.4 Connection of the cable screen and grounding................. 14
4.5 Wiring plans OPTISOUND 3030 C ......................... 15
4.6 Wiring plans OPTISOUND 3040 C and 3050 C ................ 16
5 Adjustment
5.1 Adjustment, general .................................... 17
5.2 Compatibility acc. to NAMUR NE 53 ........................ 17
5.3 Adjustment with the indicating/adjustment module .............. 18
6 Technical data........................................... 19
7 Dimensions ............................................. 27
Take note of safety
instructions for Ex
application
Please note the Exspecific safety information which you will find on our homepage
www.krohne-mar.comand which come with the appropriate instrument. In hazardous
areas you should take note of the appropriate regulations, conformity and type approval certificates of the sensors and power supply units. The sensors must only be
operated on intrinsically safe circuits. The permissible electrical values are stated in
the certificate.
2 Ultrasonic – Level measurement in solids
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Description of the measuring principle
1 Description of the measuring principle
Measuring principle
Short ultrasonic pulses in the range of 18 kHzto35 kHz are emittedby the transducer
to the product surface, reflected there and received by the transducer. The pulses
travel at the speed of sound - the elapsed time from emission to reception of the
signals depends on the level in the vessel.
The latest microcomputer technology and the proven processing software select the
level echofrom among any number offalse echoes andcalculate the exact distance to
the product surface. An integratedtemperature sensor detects the temperature in the
vessel and compensates the influence of temperature on the signal running time.
By simply entering the vessel dimensions, a level-proportional signal is generated
from the distance. It is not necessary to fill the vessel for adjustment.
Wide application range
OPTISOUND 3030 C, 3040 C and 3050 C ultrasonic sensors are especially suitable
for level measurement of solids, but are also good for liquids. The instrumentsdiffer in
the measuring range, the transducer version and the process fitting. Through diffe-
rent, adapted emitting frequencies and efficient transducers, levels in a measuring
range of 15 … 45 m (49.2 … 147.6 ft
transducers and process fittings also allow applications in corrosive products (depending on the model).
) can be measured. Resistant materials for the
A version suitable for each application
Adaptable sensors are a must for the wide variety of product characteristics and
installation conditions. OPTISOUND ultrasonic sensors meet this requirement with
versions suitable for all applications.
A practical mounting strap (option) enables flexible orientation of OPTISOUND 3030
C.
Four different versions of OPTISOUND 3040 C and 3050 C enable installation in
virtually all vessels and optimum orientation to the product cone:
l Version A compact in flange version
l Version B compact with swivelling holder
l Version C separate with swivelling holder
l Version D separate with thread fitting.
Unaffected by product properties
Fluctuations in product composition or even complete product changes do not influ-
ence the measuring result. A fresh adjustment is not necessary.
Service and maintenance friendly
Thanks to the non-contact measuringprinciple, OPTISOUND sensors are particularly
easy to service and maintain.
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Ultrasonic – Level measurement in solids 3
Description of the measuring principle
1.1 Application examples
Conveyor belt with sugar beets
Fig. 1: Profile measurement on a conveyor belt withOPTISOUND 3030
C
The sugarbeets used for sugar production arepoured from trucksonto conveyor belts
on which they are transported for further processing. OPTISOUND sensors are an
economic solution for profile monitoring. Ultrasonic waves are reflected by the medium, the integrated electronics detects the charging height of the conveyor belt. By
means of the mounting strap, OPTISOUND 3030 C can be optimally oriented to the
medium. Thanks to its high emitting power, fog, wind and moisture do not affect
measurement reliability.
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Description of the measuring principle
Plastic granules
Fig. 2: Level measurement in a plastic granules silo with OPTISOUND
3040 C
Plastic granules are often stored in high, narrow silos that are filled pneumatically.
OPTISOUND ultrasonic sensors are particularly suitable for level measurement of
plastic granules. They are equipped with powerful transducers and optimised signal
processing. A swivelling holder on the mounting flange ensures optimum orientation
to the product, also when material cones form.
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Ultrasonic – Level measurement in solids 5
Type overview
2 Type overview
OPTISOUND 3030 C OPTISOUND 3040 C
Preferred application: liquids and solids Solids
Measuring range: liquids: 0.6 … 15 m (2 … 49.2 ft)
solids: 0.6 … 7 m (2 … 23 ft)
Process fitting: compression flange DN 100 or mounting
strap
Process temperature:-40 … +80°C (-40 …
Process pressure:-20 … 100 kPa
(-0.2 … 1.0 bar/-2.9 … 14.5 psi)
Signal output two-wire/four-wire 4 … 20 mA/HART four-wire 4 … 20 mA/HART
OPTISOUND 3050 C
Preferred application: Solids
+176°F)-40 … +80°C (-40 … +176°F)
liquids: 1 … 25 m (3.3 … 82 ft)
solids: 1 … 15 m (3.3 … 49.2 ft)
flange DN 200, with swivelling holder from
DN 50
-20 … 150 kPa
(-0.2 … 1.5 bar/-2.9 … 21.8 psi)
Measuring range: liquids: 0.8 … 45 m (2.6 … 147.6 ft)
solids: 0.8 … 25 m (2.6 … 82 ft)
Process fitting: flange DN 250, with swivelling holder
from DN 50
Process temperature:-40 … +80°C (-40 … +176°F)
Process pressure:-20 … 150 kPa
(-0.2 … 1.5 bar/-2.9 … 21.8 psi)
Signal output four-wire 4 … 20 mA/HART
6 Ultrasonic – Level measurement in solids
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Indicating and
adjustment module
Housing
Electronics
Type overview
Plastic Stainless steel Aluminium Aluminium
(double cham-
ber)
Sensors
Approvals
4 … 20 mA/
HART four-wire
Transducer
15 m
Dust explosion
protection
Transducer
25 m
Transducer
45 m
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Mounting information
3 Mounting information
Measuring range
The reference plane for the measurement depends on the version. For the OPTISOUND 3040 C and 3050 C in flange version (version A) the lower edge of the flange
is the reference plane. For the versions with swivelling holder (versions B and C), with
threaded fitting (version D) as well as for OPTISOUND 3030 C, the lower edge of the
transducer is the reference plane. All statements concerning the measuring range as
well as the internal signal relate to this plane.
With all instruments, amin. distance from the lower edge of the flange - the so-called
dead zone, in which measurement is not possible - must be maintained. The exact
value of the dead zone, depending on the instrument version, is stated in the Technical data.
2
1
Fig. 3: Min. distance to the max. level on the example of an OPTISOUND 3030 C
1 Dead zone
2 Reference plane for the measurement
Note:
If the product reaches the transducer, buildup can form on it over a period of time and
later cause measurement errors.
132
4
100%
0%
Fig. 4: OPTISOUND 3040 C and 3050 version A – Measuring range
(operating range) and max. measuring distance
1 full (dead zone)
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
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8 Ultrasonic – Level measurement in solids
Mounting information
Pressure/Vacuum
132
4
100%
0%
Fig. 5: OPTISOUND 3030 C … 3050 C version B, C, D – Measuring
range (operating range) and max. measuring distance
1 full (dead zone)
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
Gauge pressure in the vessel does not influence OPTISOUND. Low pressure or
vacuum, however damp the ultrasonic pulses. This influences the measuring result,
particularly if the level is very low. With pressures under -0,2 bar (-20 kPa) use a
different measuring principle, e.g. radar or guided radar (TDR).
Installation position
The mounting position of OPTISOUND 3030 C must be at least 200 mm (OPTISOUND 3040 C and 3050 C - at least 500 mm) from the vessel wall. If the sensor is
installed in the center of dished or spherical vessel tops, multiple echoes can result.
These can be faded out, however, through an appropriate adjustment.
If you cannot keep this distance, a false echo storage should be carried out during
setup. This applies particularly if buildup on the vessel wall is expected. In this case,
we recommend repeating the false echo storage later on with existing buildup.
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Mounting information
1
2
> 200 mm
Fig. 6: Mounting of OPTISOUND 3030 C on round vessel tops
1 Reference plane
2 Vessel center or symmetry axis
1
> 500 mm
Fig. 7: Mounting of OPTISOUND 3040 C and 3050 C on round vessel
tops
1 Reference plane
In vessels with conical bottom it can be advantageous to mount the sensor in the
center of the vessel, as measurement is then possible down to the lowest point of the
vessel bottom.
10 Ultrasonic – Level measurement in solids
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