Installation Manual 5850-023
TE91K022-EN3
BADK 082012
Alfa Laval Conductivity Sensor
Safety instructions
This instrument is built and tested according to the current EU-direc-
tives and packed in technically safe condition. In order to maintain this
condition and to ensure safe operation, the user must follow the hints
and warnings given in this instruction.
During the installation the valid national rules have to be observed.
Ignoring the warnings may lead to severe personal injury or substantial
damage to property.
The product must be operated by trained staff. Correct and safe
operation of this equipment is dependent on proper transport, storage,
installation and operation.
All electrical wiring must conform to local standards. In order to
prevent stray electrical radiation, we recommend twisted and shielded
input cables, as also to keep power supply cables separated from the
input cables. The connection must be made according to the connect-
ing diagrams.
Before switching off the supply voltage check the possible effects on
other equipment and the processing system. Ensure that the supply
voltage and the conditions in the environment comply with the specifi
-
cation of the device.
This instruction manual is part of the device, must be kept nearest its
location, always accessible to all employees. This instruction manual is
copyrighted. The contents of this instruction manual reflect the version
available at the time of printing. It has been issued to our best knowl-
edge. However, errors may have occurred. Alfa Laval Tank Equipment
A/S is not liable for any incorrect statements and their effects.
– Technical modifications reserved –
Limitation of liability
By non-observance of the instruction manual, inappropriate use,
modification or damage, no liability is assumed and warranty claims
will be excluded.
Intended use
The Alfa Laval Conductivity Transmitter TE67Kxxxxxxxxx have,
according to the type, been developed for applications where conduc-
tivity and temperature are to be measured.
Inductive conductivity measurement is based on the principle of two
series-connected toroidal-core transformers (1) and (2).
The primary side of the transformer 1 is controlled by an AC voltage
generator.
The liquid flowing through the channel bore (3) in the measuring head
form a conductor loop, which links between the secondary side of
the transformer (1) and the primary side of the transformer (2). The
output current is proportional with the conductivity of the media. Signal
conditioning, amplification and conversion provides a 4...20 mA signal
output from the galvanically isolated D/A converter.
The measured conductivity is highly dependable of the media tem-
perature. Therefore the fast-response temperature sensor in the tip (4)
compensates for the temperature in the media.
The special processing unit offers maximum accuracy and reliability.
The very low resolution of 1µS/cm together with a fast response time
gives a high sensivity. This ensures reliable detection of media even
with minor differences in conductivity, such as different kinds of beer.
Functional Principle
2
1
3
2
1
4
A
D
D
A
Proc.
AC
4...20 mA
outputs
TE67Kxxxxxxxxx
R
74 - 03
It is the operator’s responsibility to check and verify the suitability of
the device for the intended application. If any doubts remain, please
contact our local Alfa Laval Company in order to ensure proper usage.
Alfa Laval Tank Equipment A/S is not liable for any incorrect selections
and their effects.
– The technical data listed in the current data sheet are engaging and
must be complied with. If the data sheet is not available, please order
or download it from our homepage (http://www.alfalaval.com)
* WARNING!
Danger through improper usage.
Package contents
Please verify that all listed parts are undamaged included in the deliv-
ery and check for consistency specified in o
ur order:
– Conductivity transmitter
– Mounting instructions
