Applications; 11 Thermal Radiation; Important Notes - Monacor INC-1500THERM Bedienungsanleitung

Thermal Imaging Network
Camera
These instructions are intended for installers
of video surveillance systems Please read
the instructions carefully prior to installa-
tion and keep them for later reference

1 Applications

The thermal imaging camera INC-
1500THERM is specially designed for video
surveillance systems based on computer
networks It does not need any light at all;
even in conditions of poor visibility (e g
fog), it offers high-contrast images Fur-
thermore, it has a long detection range,
e g for people, animals or vehicles Thus,
this thermal imaging camera will ideally
complement optical video cameras in
video surveillance systems Its housing is
weather proof (IP 66); therefore, the camera
is also suited for outdoor applications It
is equipped with an infrared sensor and a
15 mm lens The camera features include
mirror image, masking of image areas, mo-
tion detection and thermal alarm in image
areas to be selected
The camera is provided with an inte-
grated web server with 2-way video stream-
ing For correct configuration, knowledge
in network technology is indispensable
The camera can be operated in combi-
nation with a network video recorder (e g
INR-...*) or operated independently via a
web browser It is equipped with an audio
input and an audio output so that mutual
communication via a computer will be pos-
sible Two switching outputs are provided
for switching units, e g triggered by inte-
grated motion detection or temperature
changes The camera also offers two alarm
inputs These inputs can be used, for exam-
ple, to start recordings or e-mail messages
A slot for memory cards allows you to make
video recordings in the camera according
to schedule or triggered by alarm
The RS-485 connectors can be used to
activate a pan / tilt head This pan / tilt head
will be controlled via PTZ dialog on the
computer or by means of a video recorder
*Hint: If this camera model does not appear in the
list of the recorder used, select the ONVIF
protocol
12
1.1 Thermal radiation
All objects emit electromagnetic radia-
tion depending on their temperature and
surface Unlike video detection which re-
quires a light source, thermal detection of
an object does not require any additional
radiation source For temperatures up to
approximately 600 °C, the radiation is in
the infrared range, i e outside the range
visible to the human eye The sensor of INC-
1500THERM, a microbolometer of the type
IRFPA (Infrared Focal Plane Array), is able
to detect infrared radiation in the range
IR-C with a wavelength of 8 to 14 µm The
camera will show a thermal image of the
radiation detected Various colour schemes
for false colour rendering are available to
distinguish the temperature areas within
the thermal image ( ☞ chapter 71)
A "black body" is an ideal thermal ra-
diation source It will completely absorb all
incident radiation; the radiation emitted is
only determined by its temperature A real
object, on the other hand, will also reflect
or transmit a fraction of the radiation from
the environment so that the radiation emit-
ted by the object does not solely depend
on its temperature
The emissivity ε is the radiation emit-
ted by a real object compared to a black
body For black bodies, the emissivity is
assumed to be ε = 1; for real objects, it is
less than 1 It depends on the surface prop-
erties (material, roughness) of the object
and also on the temperature and wave-
length For most materials, the emissivity
for the temperature range of 0 –100 °C
can be roughly divided into the two fol-
lowing groups: ε = 002 – 020 for metallic
surfaces; ε = 090 – 098 for non-metallic
surfaces
An accurate measurement of the tem-
perature by means of the radiation of an
object will therefore only be possible if
you know its surface properties The cor-
responding emissivity can be found in the
relevant tables In the setup menu "Config-
uration" of INC-1500THERM, the emissivity
can be entered as "Target Emission Rate"
on the page "Thermal  Temperature Area"
( ☞ chapter 722) To take into account the
radiation reflected from the object during
the measurement, enter the ambient tem-
perature as "Ambient Temperature" on the
page "Thermal  Temperature Parameters"
( ☞ chapter 721)
Usually, the emissivity of an observed
object is not known during surveillance, but
a precise temperature value is not required
The focus is rather on getting a high-con-
trast thermal image to complement video
surveillance To evaluate a thermal image,
however, it is still useful to have an idea of
thermal radiation and to be aware of the
fact that the temperature indicated is not
necessarily the precise temperature of the
object; this temperature is also determined
by the surface properties of the object and
by reflections from its environment

2 Important Notes

The camera corresponds to all relevant di-
rectives of the EU and is therefore marked
with 
• Protect the camera against extreme tem-
peratures (admissible ambient tempera-
ture range: −10 °C to +55 °C)
• Never direct the camera towards sources
of high radiation, e g sun, laser or arc
welding This may affect the accuracy of
the sensor
• Protect the camera against strong vibra-
tions, also during transport
• Never use aggressive detergents or
chemicals when cleaning the camera
housing For cleaning the lens, use a soft
cloth moistened with isopropyl alcohol or
optical lens cleaners
• No guarantee claims for the camera
and no liability for any resulting person-
al damage or material damage will be
accepted if the camera is used for other
purposes than originally intended, if it
is not correctly connected or operated,
or if it is not repaired in an expert way
Likewise, no liability will be accepted for
any data loss due to operating errors or a
defect or for any consequential damage
caused by this data loss
If the camera is to be put out of op-
eration definitively, take it to a local
recycling plant for a disposal which
is not harmful to the environment