VOLTCRAFT IR 500-8S SE Notice D'emploi page 4

6. OPERATION
a) Operating principle
Infrared thermometers (IR thermometers) measure the surface temperature of an object. The sensor on the
product records the heat radiation emitted, refl ected and transmitted through the object, and converts this
information into a temperature value.
The emission level is a value used to describe the energy radiation characteristics of a material. The higher
the value, the more capable the material is of emitting radiation. Many organic materials and surfaces have
an emission level of approx. 0.95. Metallic surfaces or shiny materials have a lower emission level. This will
cause an inaccurate reading. For this reason, a matt black layer of paint or matt adhesive tape should be
applied to metallic shiny surfaces.
b) IR measuring optics - ratio
measuring distance - measuring surface
(D:S = measuring distance:measuring surface)
In order to obtain precise measuring results, the object to be measured must be larger than the measuring
spot of the IR thermometer. The temperature recorded is the average temperature of the area measured. The
smaller the object to be measured, the shorter the distance must be to the infrared thermometer. The precise
size of the measuring spot is shown in the following diagram. It is also printed on the device. For precise
measurements, the object to be measured should be at least twice the size of the measuring spot.
The smallest measurement diameter is reached just in front of the measurement hole. This has a diameter
of 14 mm. However, keep suffi cient distance to avoid faulty measurement due to heating of the IR
thermometer.
Example: The measurement diameter is 50 mm at a distance of 400 mm.
c) Target laser
The target laser is active depending on the default setting during
measurement. A warning symbol (4E) is shown on the display
if the laser is active and the measurement button is pressed.
Never stare at the laser and measurement hole (7 and 8) during
measurement.
The target laser marks the centre of the measurement hole
displaced downwards by 13 mm.
d) Reading
Direct the measuring hole (7) perpendicular to the object to be measured. Make sure the object to be
measured is not smaller than the IR-measuring surface of the device.
Press the measuring button (5) and hold it down. The measured value (4B) is shown in the display. The
displayed value corresponds with the average surface temperature of the IR-measuring surface. During the
measurement, "SCAN" (4C) is shown on the display.
After releasing the measuring button (5), the last measured value will be displayed for approx. 8 seconds
for a better readability. "HOLD" (4D) will also be displayed.
About 8 seconds after releasing the measuring button (5), the device turns off automatically.
If the temperature measuring range is exceeded, "----" is displayed.
To determine the warmest/coldest spot on the object to be measured, move the measuring device over
the surfaces of the object, covering all areas and pressing and holding down the measuring button (5).
Depending on the default setting, the highest or lowest temperature measured is shown at the left bottom
of the display by pressing the MAX/MIN button (3).
Shiny surfaces affect the measured result. To compensate, the shiny part of the surface can be
covered with adhesive tape or matt black paint. The device cannot take measurements through
transparent surfaces such as glass. Instead, it measures the surface temperature of the glass.
Longer measurements of high temperatures, with close measuring distance, lead to self-heating of the
measuring device and thus to inaccurate measurements. In order to obtain exact measured values,
remember the following rule of thumb: The higher the temperature, the greater the measuring distance and
the shorter the measuring time.
e) Special functions
Some functions can be turned on/off or switched on the IR thermometer during its operation. The device
must be turned on to be able to select the functions. To do this, press and hold the measurement button for
about 1 second. Switching is possible both during the measurement operation and measurement stop.
MAX/MIN display
Press the "MAX/MIN" button (3). Every time you press the button, you switch the (4A) indication on the
display.
°C/°F temperature unit
Press the "°C/°F" button (6). Every time you press the button, you switch the (4G) indication on the display.
Target laser/display lighting
The display lighting and the target laser are active by default. Press the button with the light bulb/laser sym-
bol (2) to turn it on/off. Every time you press the button, you switch the functions on and off successively.
Laser on, light on --> laser off, light on --> laser off, light off --> laser on, light off --> laser on, light on, etc.
7. CLEANING AND MAINTENANCE
Apart from occasional cleaning and battery replacement, the device requires no servicing.
Always observe the following safety instructions before cleaning the device:
a) Cleaning of the lens
Remove loose particles with clean compressed air and wipe off remaining residues with a fi ne lens brush.
Clean the surface with a lens cleaning cloth or a clean, soft, lint-free cloth. To remove fi ngerprints and
other fat residues, the cloth can be moistened with water or lens cleaning solution. Do not use any acidic,
alcoholic or other solvents or rough, linty cloth to clean the lens. Avoid applying too much pressure during
cleaning.
b) Cleaning the housing
Do not use scouring, chemical or aggressive cleaning agents such as benzene, alcohol or such like.
These might attack the surface of the device. Furthermore, the fumes are hazardous to your health and
are explosive. Moreover, you should not use sharp-edged tools, screwdrivers or metal brushes or similar
implements for cleaning.
To clean the device, use a clean, slightly damp, fuzz-free, antistatic cloth.
Should questions arise concerning the use of the device, feel free to contact our techni-
cal support at the following phone number:
Voltcraft®, 92242 Hirschau, Lindenweg 15, Tel. No. 0180 / 586 582 7.
8. DISPOSAL
a) Product
Electronic devices are recyclable material and do not belong in the household waste.
Dispose of an unserviceable product in accordance with the relevant statutory regulations.
Remove any battery/rechargeable batteries inserted and dispose of them separately from the
product.
b) Batteries and rechargeable batteries
As the end user, you are required by law (Battery Ordinance) to return all spent batteries/rechargeable
batteries; disposal of them in the household waste is prohibited.
Batteries/rechargeable batteries contain harmful materials and are labelled with the symbol
shown to indicate that disposal in the household waste is forbidden. The symbols of the relevant
heavy metals are: Cd=cadmium, Hg=mercury, Pb=lead (marking can be seen on the battery/
rechargeable battery, e.g. underneath the refuse bin symbol shown on the left).
You can return your used batteries/rechargeable batteries free of charge at the offi cial collection
points of your community, in our stores, or at places where batteries or rechargeable batteries
are sold.
You thereby fulfi l your statutory obligations and contribute to the protection of the environment.
9. TECHNICAL DATA
Operating voltage ..........................................9 V/DC (9 V block battery)
Response time ...............................................< 1 s
IR spectrum ...................................................6 - 14 μm
Emission level ................................................0.95 permanent
Resolution ......................................................0.1 °C
IR measurement optics ..................................8:1
Rated laser power .........................................< 1 mW, laser class 2, wave length 630 - 670 nm
Operating temperature ..................................0 to +50 °C
Operating humidity ........................................10 to 90 % rel. humidity
Storage temperature ......................................-20 to +60 °C.
Storage humidity ............................................< 80 % rel. humidity
Weight ...........................................................130 g
Dimensions (W x H x D) ................................43 x 146 x 92 mm
Accuracy (for ambient temperatures of 18 to 28 °C, emission level 0.95):
Temperature measuring range
-50 to 0 °C -58 to +32 °F
>0 to +500 °C >32 to +932 °F
EMISSION LEVEL OF DIFFERENT SURFACES
The emission levels listed in the table are approximate values. Different parameters such as geometry and
the surface quality can affect the emission level of an object.
The product is equipped with a fi xed emission level of 0.95. This level matches most non-metallic materi-
als. The IR measuring method is suitable for bare metals only to a limited extent and requires a special
surface treatment (e.g. matte insulation tape etc.).
Surface Emission level
Aluminium, bare 0.04
Asphalt 0.90 - 0.98
Concrete 0.94
Ice 0.96 - 0.98
Ferric oxide 0.78 - 0.82
Hard plaster 0.80 - 0.90
Glass/porcelain 0.92 - 0.94
Rubber, black 0.94
Wood 0.94
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
Copyright 2018 by Conrad Electronic SE.
Accuracy
± 5 °C/± 9 °F
± 3% of the measured value or
± 3 °C/5 °F
Surface Emission level
Varnish, matte 0.97
Foodstuffs 0.93 - 0.98
Human skin 0.98
Plastic 0.94
Paper 0.97
Sand 0.90
Textiles 0.90
Water 0.92 - 0.96
Bricks, plastering 0.93 - 0.96