WNIP JUL AUG 19.4 Digital

6
Replace thermocouples easily with non-contact
temperature sensors
The new PyroNFC-K is
a miniature infrared
temperature sensor that is quick
and easy to install in place of a
traditional thermocouple probe.
Industrial processes have used
thermocouples for temperature
measurement for more than 100
years, but non-contact sensors
are now increasingly used in
The new LTF Series have
been added to the family of
L-GAGE® laser sensors. Featuring
time-of-flight technology, the
laser measurement sensor
ensures accurate distance
measurements out to 12 meters.
By emitting a pulsed light,
the LTF measures the amount of
time for the light to reflect off the
object and return to the sensor to
calculate the distance.
This enables sensing in longrange
applications, including loop
control, part presence or absence
and fill level.
their place thanks to proven,
modern infrared measurement
technology. Traditional contact
probes have several drawbacks
such as slow response time, as well
as susceptibility to mechanical
failure and vibration, which can all
be overcome simply by switching
to infrared pyrometers.
The fully-configurable
PyroNFC-K has a simulated
thermocouple output, making
it easier than ever to start using
IR temperature sensors in place
of thermocouples. Its side-entry
cable and length of just 29 mm
make it easy to mount in confined
spaces.
The pyrometer works by
measuring the amount of
radiation that a surface emits, and
converting that into a meaningful
temperature reading within 0.125
seconds.
The output works just like
the old Type K thermocouple
that it replaces, and is connected
in the same way to the same
instrumentation with no need to
re-configure. Then all the sensor
needs to start measuring is a
supply of 6 to 8 V DC.
Measurements are highly
repeatable, within 0.5% or 0.5°C,
helping to ensure consistent
product quality in manufacturing
processes.
Non-reflective non-metals are
measured easily and accurately
straight out of the box and painted
19.4
metals are also no problem. The
sensor can be configured for
emissivity setting, averaging,
peak or valley hold processing and
reflective energy compensation
– without even connecting the
power – via the free Android app
for NFC-enabled phones.
If the sensor is powered, the
temperature reading is shown
continuously while the phone is
held against it.
The included open drain alarm
output (standard on all models)
can be used simultaneously with
the temperature output. A version
with a linear voltage output is also
available.
info@asstech.co.za
Laser measurement sensor provides superior durability and
precision measurement
The LTF offers the best-inclass
combination of accuracy,
repeatability and range. Designed
with a Class 2 laser emitter with
small, highly visible spot, the LTF
provides easy sensor alignment
and high excess gain.
The same sensor that provides
repeatability of less than 7
millimetres and accuracy of plus
or minus 10 millimetres can also
reliably detect dark targets past
7 meters and white targets at 12
meters.
In addition to precision
distance measurement, the LTF
delivers consistent detection of
targets regardless of the angle,
environmental conditions or
ambient light conditions.
The dynamically adjusted laser
sensor can also sense objects with
varying materials and shapes. The
laser power increases output for
dark targets or objects at steep
angles, while reducing power for
shiny targets.
According to the
manufacturer, no other sensor
on the market is going to give you
the same combination of range,
repeatability and accuracy as
the LTF. With high excess gain,
high reliability and durable
performance, the LTF ensures
accurate sensing for challenging
targets.
With easy, ready-to-use
operation, the LTF starts
measuring right out of the box.
In just three simple steps, the
sensor can be quickly mounted,
aligned and provide real-time
measurement.
Users can also select from
several TEACH modes, including
2-point teach, mid-point teach,
switch point teach and push
button adjust, to accommodate
diverse applications.
Advanced measurement
modes, delay timers and crosstalk
avoidance capability are also
available.
Featuring an intuitive twoline,
eight-character display, the
LTF makes adjustments and menu
navigation simple and easy to read.
Additionally, the bright LED
indicators provide clear status
indication for analogue output,
discrete output and power.
To satisfy applications in harsh
environmental conditions, the LTF
features durable IP67-rated diecast
zinc housing.
brandon.topham@
retautomation.com
New DC/DC converter for photovoltaic applications
With the new DC/DC
converter from the Uno
Power product range, the control
cabinet is supplied directly
from the photovoltaic system.
This saves installation costs and
increases the efficiency of the
system.
The DC/DC converter enables
direct connection to string
voltages. As such, the string
combiner box is supplied from the
photovoltaic system and there are
no additional installation costs.
With its wide-range input, the
device converts input voltages
between 700 V and 1000 V into an
electrically isolated 24 V output
voltage.
Thanks to its robust design,
it works reliably at temperatures
between -25°C and +70°C. Thanks
to the compact housing and
high efficiency of more than 90
percent, it can also be used in small
control boxes. The LED function
monitoring simplifies startup and
the UL-1741 certification facilitates
the approval of the overall system.
tonyr@phoenixcontact.co.za