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1
General
Carefully read through the manual before starting work. Observe
the relevant health and safety and accident prevention regulations.
If you do not understand this manual or parts of it, please ask us.
Observe warnings to prevent hazards for personnel or the product.
The manual forms part of the product, therefore if selling or han-
ding on, please give it to the new owner.
Observe the manual and other information about the ultrasonic
sensor (e.g. data sheets) and keep available for the entire service
life.
These instructions are intended for qualified personnel instal-
ling the ultrasonic sensor.
The complete mounting and installation manual is available in
the download area on our website under www.elobau.com or
via the QR code.
1.1
Liability exclusion
We accept no responsibility for damage or interruption to opera-
tions:
● Resulting from non-observation of this manual.
● if spare parts or accessories are used that have not been
approved by the manufacturer.
● in the event of independent (non-authorised) repairs, conversi-
ons and changes.
1.2
Manufacturer
elobau GmbH & Co. KG
Zeppelinstr. 44
D-88299 Leutkirch/Germany
Tel.: +49 (0)7561 970-0
Fax: +49 (0)7561 970-100
Web: www.elobau.com
E-Mail: info@elobau.com
2
Safety
2.1
Use
Intended use
The ultrasonic sensor is optimised for measuring the levels of
liquid media. Due to the universal nature of ultrasonic technology
measurement of the distance to objects is also possible.
Media contacting parts (see datasheet) must be sufficiently chemi-
cally resistant against the medium. Observe the specified range of
use according to the datasheet.
► Check, whether the ordered variant matches the application.
Any non-intended use of or all activities performed on the ultraso-
nic sensor that are not described in this manual represent a not
permitted, incorrect use outside the legal limits of liability of the
manufacturer.
Only operate ultrasonic sensors in intact and undamaged condition
and with the originally fitted focus tube (option). Adhere to all
applicable safety conditions, laws and directives.
Reasonably foreseeable misuse
In the event of incorrect use, hazards can arise for persons or
property.
Incorrect use includes for example:
● Use in heavily contaminated or crystallising media.
● Severely mechanically loading the ultrasonic sensor (e.g. lever-
ing / bending movements or tightening/loosening by hitting).
● Not complying with technical data.
2.2
Personnel
Only specially trained, authorised specialised personnel may
assemble, install, maintain and repair the ultrasonic sensor as well
as performing any other work.
2/2
2.3
Conformity
The CE mark is part of the name plate.
The ultrasonic sensor conforms to the state of the
art plus the applicable safety conditions at the time
of bringing into circulation within the scope of its
intended use.
From a design point of view, reasonably foreseeable misuse can-
not be avoided without limiting the intended functionality.
2.4
Changes/conversion
Any unauthorised change or conversion is expressly forbidden.
3
Transport/storage
Only store and transport the ultrasonic sensor in a cardboard box
protected by bubble wrap packaging.
4
Technical data
Performance data, dimensions and/or functions see supplied
product specification/drawing/datasheet.
Focus tube
Variants (material) are possible, dependent on the medium. Resis-
tance is dependent on the temperature and duration for which the
sound tube is exposed to the medium.
Information
In the event of deviations from the specification,
contact elobau. Validation performed by testing.
5
Description
9
8
7
6
5
1
Name plate
2
3
4
Focus tube O-ring seal
5
Tube vent hole
6
7
Tank flat seal
8
9
Ultrasonic sensor head
Information
The figure is for illustration purposes only. See additi-
onal datasheet (separate document).
Method of operation
The ultrasonic transducer (4) generates a sound pulse and trans-
mits it. The sound is reflected at the surface of the medium (e.g.
diesel) in the tank.
The ultrasonic transducer (4) records the echo. Based on the time
of flight of the pulse, the electronics in the ultrasonic sensor head
(9) determine the fill level.
The ultrasonic sensor head (9) outputs the result via a current or
voltage signal that depends on the tank level.
The interface is used for power supply and transfer of the measu-
red values to the control unit.
The purpose of the focus tube (6) is to guide the sound. If the
vehicle has a sloping orientation it prevents the sound from
being scattered in the tank (the surface of the medium remains
horizontal).
Instead the sound is transmitted directly back to the ultrasonic
sensor for evaluation.
Measurement is not possible in the range < 50 mm from the
ultrasonic transducer (4). Measurements are dependent on the
reflection of the medium. Smooth surfaces, or under certain cir-
cumstances moving media, delivery good measurement results.
Information
For actual applications contact elobau.
9010004K01M - V03
6
Installation/putting into service
Observe the information and instructions of the tank manufacturer.
Comply with the electrical specifications.
► Check the ultrasonic sensor and lead for damage.
6.1
Mechanical connection
Danger due to pressurised media
Escaping media can result in severe injuries.
► Ensure that the system is depressurised before
► Check the container level.
► If necessary, empty the tank before the ultrasonic
► If necessary, wear personal protective equipment
► Capture any escaping media in a suitable vessel.
Danger due to incorrect installation
Ultrasonic sensors can be damaged by overtight-
ening (too high tightening torques).
► Avoid severe impacts or vibrations.
► Adhere to the installation tolerances and instal-
► Adhere to the tightening torques (datasheet).
► Be aware of the influences of the medium!
Risk of incorrect measurements arising from:
● Foam formation
● Outgassing (e.g. with petrol), which changes the physical
properties of the air.
1
● Formation of condensation on the ultrasonic transducer due to
water and water vapour.
● Soiling of the ultrasonic transducer.
2
3
An inclined position upon installation reduces the possible range.
4
► If necessary fit a suitable seal on the sealing surface.
► Install the ultrasonic sensor in the tank using screws. Adhere to
the tightening torques in the datasheet.
The focus tube can be shortened bearing in mind the following
information:
Tank O-ring seal
● The tube end must not be sloping.
Ultrasonic transducer
● The tube end must be smooth and free from fibres
Focus tube (option)
● The interior of the tube must be clean
● Level measurements cannot be made when the liquid surface
4-hole flange
is more than 8 mm beyond the tube end
● When measurements are made more than 8 mm beyond the
tube end the output signal is undefined
● The electrical output signal, related to the absolute measuring
length, remains unchanged
● The useful range of the output signal is limited dependent on
the tube shortening
● The previous limit value of the output signal is no longer rea-
ched at the new tube end
● The output signal at the shortened tube end is equal to the
output signal with the unshortened tube if a measuring length
corresponding to the new tube length is set
6.2
Electrical connection
► Check for the voltage-free state of the connection.
► Connect the ultrasonic sensor in accordance with the wire
colours/connector pin assignments in the data sheet.
► Route the wiring harnesses so that no damage can arise (e.g.
due to kinks, breaks, rubbing points).
► Route wires so that they are rigidly fixed if they will be exposed
to temperatures less than -5°C.
► After installing, hand over the installation manual to the end-
user.
6.3
Putting into service
► Observe the information and instructions of the ultrasonic
sensor manufacturer.
► Ensure that the electrical specifications are adhered to.
► Check the intactness of the sensor lead and housing parts.
► Connect the operating voltage and check the functioning of the
ultrasonic sensor.
Ultrasonic sensor 2UF
WARNING
the ultrasonic sensor is installed/removed.
sensor is installed/removed.
(safety gloves, safety glasses).
NOTICE
lation location.
Date: 28.06.2019
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