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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 measured results, the object to be measured must be larger than the measuring
IR spot of the IR thermometer. The temperature recorded is the average temperature of the area meas-
ured. 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.
c) Target laser
The target laser is automatically activated during each reading. A warning symbol (1E) is shown on the
display if the measurement button is pressed. Never look into the measurement hole during a reading.
The target laser is constructed in dual design and marks the inner, approximate edge area of the measur-
ing surface.
When both laser spots meet, the smallest
measuring surface has been reached. The latter
has a diameter of 12.7 mm
With larger distances, the two laser sports move
apart, analogue to the measuring surface.
d) Reading
Direct the measuring hole (6) 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 (4) and hold it down. The measuring value (1B) is shown in the display. The
displayed value corresponds with the average surface temperature of the IR-measuring surface. During the
measurement, "SCAN" (1C) is shown in the display.
After releasing the measuring button (4), the last measured value will be displayed for approx. 7 seconds
for a better readability. "HOLD" (1D) will also be displayed.
7 seconds after releasing the measuring button (4), the device turns off automatically.
If the temperature measuring range is exceeded, "----" is displayed.
To determine the warmest spot on the object to be measured, move the measuring device over the sur-
faces of the object covering all areas and pressing and holding down the measuring button (4). The highest
temperature measured will be displayed as maximum temperature on the bottom left.
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.
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 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.
For cleaning the device or the display and the measuring cables, 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: .............................................<125 ms
IR spectrum: .................................................8 - 14 μm
Emission level ...............................................0.95 permanent
Resolution .....................................................0.1 °C
IR measuring optics: .....................................12:1
Laser: Rated power ......................................< 1 mW, laser class 2,Wave length 630 - 670 nm
Operating temperature: ................................0 to +50
Operating humidity: ......................................10 to 90 % r. hum.
Storage temperature: ....................................-10 to +60 °C
Storage humidity: ..........................................<80 % r. hum.
Weight: .........................................................175 g
Dimensions (W x H x D): ..............................43 x 146 x 92 mm
Accuracy (for ambient temperatures of 23 to 25 °C, emission level 0.95):
Temperature measuring range
-50 to +20 °C
-58 to +68 °F
>20 to +300 °C
>68 to +572 °F
>300 to +550 °C
>572 to 1022 °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. matt 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
Impressum /legal notice in our operating instructions
These operating instructions are a publication by Voltcraft
, Lindenweg 15, D-92242 Hirschau/Germany, Phone +49 180/586 582 7
®
(www.voltcraft.de).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfi lming, or the capture in electronic data processing
systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in technology and equipment reserved.
© Copyright 2013 by Voltcraft
®
Accuracy
Repeatability
± 4 °C/± 8 °F
±1.3 °C/2.3 °F
± 1.5% of the measured value or
± 0.5% or
± 1,5 °C/3 °F
± 0,5 °C/0.9 °F
± 2% of the measured value
Surface
Emission level
Varnish, matt
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
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