Electrical Thermography
The Electrical Thermography serves to detect thermal anomalies in electrical installations.
Electrical installations and facilities are flown through by a load current. On the one hand there
are the „natural“ inner resistances and on the other side contact resistances. These resistances
lead to a heating up of the components. The main task of the electrical thermography is to find
defective electrical connections and to localize anomalies of overload on wires, components and
switchboards.
Applications
For the most part, heatings appear because of a rise of contact
resistances. Another reason for a heating up can be wrong
material used for the connections. The wrong material causes
high inner and contact resistances which lead to a heating.
testo 885
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Detector Size 320 x 240 Pixel
Large Field of View 30° Standard-Objektiv
and an IFOV of 1,7 mrad
Better thermal sensitiveness <30mK
See more with the big colour display 4,3“
Ergonomic twist handle and rotatable display
SiteRecognition-Technology, automates the
documentation of IR-pictures
Panorama Assistent for the measurement on big objects
SuperResolution provides 640 x 480 measuring values
testo IR-Soft, cost- and licence free evaluation software
with professional analysis features.
How to invalidate prejudices of the customer …
If you use Thermography for electrical maintanance you can
simply find Hot Spots on components. Here you can see one
fuse which is much warmer than the rest of the fuses. It is now
about the expert to say, whether this temperature is normal for
this component or not.
The contact spring weared out over the years, so the clamping
force is not strong enought to transmit the electrical power. Out
of this reason, the contact resistance increases and the
component starts to heat up.
The reason of the heating after the startup is trivial: When the
construction was assembled, the bore holes were too small, so
they were bored up. Because of this, there occured some edges
around the bore hole. These edges were not removed. Now the
electrical power goes through the very small cross-section of the
edge with an increased resistance. This causes the heating.
The increasing temperature at connecting parts often has a simple
reason. The temperature rises because of broken screw
connections, broken clips or springs or because of the
decomposing of pressure discs.
 … the camera is to heavy and unbalanced
 Please take one of our object lenses in your hand. Testo only uses high end germanium
and large weld nugget diameter to ensure the best picture and measurement quality. This
leads us to the weight of our High-End cameras. To compensate, we have a twistable
handle to ensure a comfortable handling.
 … the camera does not look robust, rotable display could break
 As a premium provider we test our mechanical parts at life tests under enormous stress.
Our folding mechanism takes more than 50.000 test cycles under high pressure. This
equates to an intensive use over more than 10 years.
 … SuperResolution is only interpolation
 Our SuperResolution-Technologie uses a highly complex technique for 4x more real
measurement values. The improvement of our optical solution (iFoV) was proven by the
famous Fraunhofer Institut for Optronic, system technology und image evaluation in
June 2013.
 … we only have a refresh rate of 33 Hz
 The human eye is not able to see higher refresh rates than 33 Hz. Besides of this, the
measuring quality becomes worse if you clock the sensor higher than 33 Hz.
 There is only one exception. If you have very fast running applications, you need higher
frequencies than 33 Hz. But for this, you should in general use fixed cameras.
 … Testo has no video output available
 Instead you can show with Testo-Thermal-Imagers not only a Video. You will be able to
display and save all measuring data in realtime via USB-connection. This provides much
more information than a single video output.
 … the user-friendliness Testo-Cameras is than the competitors
 Thousands of excited customers tell us the opposite. You can use thermal imagers of
testo directly after the unboxing in an intuitive way. Even our Software IRSoft can be
intuitively used by customers of every degree of knowledge, from beginner to expert.
Make yourself the testo experience before buying another camera!
High Energy Processes
For production processes which need high energy, for example iron and steel production, as
well as brick and glas production, Thermography is used for the equipment condition
monitoring of industrial kilns and other energy intensive facilities. Especially measurements in
the high temperature sector are of interest. Machines, arbors and bearing are stressed by the
high temperatures and have to be checked preventively. This reducts the default risk.
testo 885
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Thermography supports especially the following parameters:
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1.
2.
-
3.
Security of employees and preventive reduction of fire risks
Assurance of process temperatures
- Product quality
- Production efficiency
Energy efficiency
Applications
Energy-intensive facilities like kilns do not only cause high
energy costs if their isolation is insufficient, they can become a
security risk towards fire and health risks.
Air blowers are important parts of industrial facilities. They
usually work under known stresses and temperatures. If the
temperature goes higher, caused by an error of the mechanical
components, you can see it on the infrared picture.
At energy intensive facilities like this glas-production, the
camera serves for several quality checks. The cooling process is
one of the most important things. With our cameras.
it can be simply checked and documented.
Detector Size 320 x 240 pixel
Large Field of View 30° standard objektive
High Temperature up to 1.200°C
SiteRecognition-Technology,
automates the documentation of your IR-pictures
SuperResolution Technology enables an IFOV of
0,4 mrad (tele lens) and 1,0 mrad for the standard objektive
Changeable 11° tele objektiv
testo IR-Soft, cost- and licence free evaluation software with
professional analysis features.
Panorama Assistent for the measurement on big objects
twistable handle to ensure a comfortable handling + movable
display
How to invalidate prejudices of the customer …
 … the camera is to heavy and unbalanced
 Please take one of our object lenses in your hand. Testo only uses high end germanium
and large weld nugget diameter to ensure the best picture and measurement quality. This
leads us to the weight of our High-End cameras. To compensate, we have a twistable
handle to ensure a comfortable handling.
 … the camera does not look robust, rotable display could break
 As a premium provider we test our mechanical parts at life tests under enormous stress.
Our folding mechanism takes more than 50.000 test cycles under high pressure. This
equates to an intensive use over more than 10 years.
 … SuperResolution is only interpolation
 Our SuperResolution-Technologie uses a highly complex technique for 4x more real
measurement values. The improvement of our optical solution (iFoV) was proven by the
famous Fraunhofer Institut for Optronic, system technology und image evaluation in
June 2013.
 … we only have a refresh rate of 33 Hz
 The human eye is not able to see higher refresh rates than 33 Hz. Besides of this, the
measuring quality becomes worse if you clock the sensor higher than 33 Hz.
 There is only one exception. If you have very fast running applications, you need higher
frequencies than 33 Hz. But for this, you should in general use fixed cameras.
 … Testo has no video output available
 Instead you can show with Testo-Thermal-Imagers not only a Video. You will be able to
display and save all measuring data in realtime via USB-connection. This provides much
more information than a single video output.
Here you can see, that the connection between the two parts of the
scissor heats up in comparison to the rest of the construction. The
error can be found in a defect shim. Without a thermal imager, this
error would be very difficult to find.
 … the user-friendliness Testo-Cameras is than the competitors
 Thousands of excited customers tell us the opposite. You can use thermal imagers of
testo directly after the unboxing in an intuitive way. Even our Software IRSoft can be
intuitively used by customers of every degree of knowledge, from beginner to expert.
Make yourself the testo experience before buying another camera!