Brochure
17
It is for this reason that Lufft uses tem-
porary storage devices for monitoring
systems that require the highest level of
reliability. These storage devices, or so-
called ‘data logger modules’, record the
measured values directly at the sensors
and buffer them. This type of system de-
sign, which characterises modern data
monitoring systems, is based upon the
principle of distribution of risk and guaran-
tees the independent function of smaller
data acquisition units. A further advantage
is that the customer is able to adapt his
monitoring network – during its relatively
long period of use – without any dif culty
to the ever-growing system requirements.
Flexible data acquisition modules are not
only able to acquire data from every sen-
sor (current, voltage) with an analogue
output, but can also process communica-
tion protocols from intelligent sensors. It is
the RS485 Interface located in the logger
module that makes all this possible. Con-
sequently, the customer is not only able
to integrate the ideal transducer into his
system solution, but can also use existing
sensors.
Transfer
Industrial real-time data acquisition is usu-
ally a matter of “Indoor Solutions”. Sub-
sequently, current technologies – such
as LAN- or WLAN connections – have
become prerequisites in most modern in-
dustrial buildings.
If the customer uses a LAN connec-
tion (Ethernet), then all measured data –
typically from each level in the measuring
cabinet – is consolidated and nally ready
to be retrieved via the IP address.
In this case the entire monitoring appli-
cation has a star-shaped construction.
The alternative to this is a “long bus”
(physically via RS485) like the CAN-bus,
which transports all measured data to the
central computer.
The system is simple; Lufft Data
Loggers store and transfer data.
One could also say that it is
simply ingenious! From a tech-
nical point of view, it is optimally
engineered and highly reliable.
Starting with the fi rst measure-
ment transmitted through intelli-
gent sensors to a temporary data
storage device, up to the transfer
of the measured values to the
central computer: perfect data
transfer, because process stabi-
lity is Lufft’s number one priority.
Storage
In a measurement chain, an intelligent,
digital or analogue sensor transfers
measure ment data to the processing sta-
tion. It is, in fact, technically possible to
store the data directly in the central com-
puter; however, faults that occur during
the data transfer would then result in a
loss of data.
Not all offered solutions
contain a temporary
storage device.
Lufft: with its experience
the more intelligent
solution.
Storing climate conditions
enables you to look back
and fi nd desired batch
production data anytime,
even after many years.
Reliable data storage with
Lufft systems.