Velleman DVM77N User manual

DVM77N
POCKET IR THERMOMETER
IR-ZAKTHERMOMETER
THERMOMÈTRE DE POCHE À IR
TERMÓMETRO IR DE BOLSILLO
INFRAROT-THERMOMETER
TERMOMETRO AD INFRAROSSI

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DVM77N – POCKET IR THERMOMETER
1. Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment.
Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized company for recycling.
This device should be returned to your distributor or to a local recycling service.
Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for choosing Velleman! Please read the manual thoroughly before bringing this device into service. If the device was damaged in transit,
don't install or use it and contact your dealer.
The DVM77N is non-contact thermometer with data-hold function, backlight and auto power off.
2. Safety Instructions
•Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not accept
responsibility for any ensuing defects or problems.
•Do not switch the device on immediately after it has been exposed to changes in temperature. Protect the device against damage by
leaving it switched off until it has reached room temperature.
•Avoid exposing the DVM77N to electromagnetic fields, dust and extreme temperatures.
CAUTION
–
Laser Radiation
–
Do Not Stare Into Beam
–
Class 2 Lase
r
Wavelen
g
th: 650-685nm
–
Max. Out
p
ut Power: < 1mW
–
EN60825
–
1:1994 + A2:2001 + A1:2002

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3. Description
1. IR sensor
2. LCD display
3. backlight button
4. ambient temperature measurement
button
5. wrist band
6. laser targeting aperture
7. SCAN button
8. °C/°F selection switch
9. battery cover
4. LCD Display
1. measurement indication
2. low power indication
3. ambient temperature measurement indication
4. measurement value
5. emissivity
6. backlight indication
7. data-hold indication
8. °C temperature measuring unit
9. °F temperature measuring unit

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5. Technical Specifications
Measurement Range -20°C ~ 270°C (-4°F ~ 518°F)
Accuracy +/- (2% of rdg + 3°C/6°F)
Ambient Temperature Measurement Range 0°C ~ 50°C (32°F ~ 122°F)
Resolution 1°C/1°F
Emissivity 0.95
Distance-to-Spot Ratio 6:1
Overrange Indication “OL” or “-OL”
Auto Power-Off 20s
Power Supply 2 x AAA battery (order code LR03C, incl.)
Dimensions 94 x 59 x 28mm
Weight 75g
6. Measurement Principle
Non-contact thermometers detect the infrared ray of an object, focus the infrared energy of the object onto a sensor through a lens, and
transfer the surface temperature into an electric signal. A microcomputer calculates and displays the measurement temperature on the LCD.
The laser is only used to aim the thermometer.
7. Operation
•How to Measure an Object’s Temperature
Point the infrared sensor towards the object and press the SCAN button. The thermometer emits a laser beam. Read the measured
temperature value from the LCD display. Release the SCAN button. The thermometer will automatically power off after 20 seconds. Refer to
“8. D:S Ratio” for accurate results.

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•How to Measure the Ambient Temperature
Press the SCAN button. Press the Tamb button to select the ambient temperature measurement mode. Press the SCAN button to measure.
Read the measured temperature value from the LCD display. Release the SCAN button. The thermometer will automatically power off after
20 seconds. To measure again, press the Tamb button again and restart the ambient temperature measurement procedure.
NOTE: The measurement accuracy will be affected when measuring the temperature of reflecting objects. Apply some black tape to the
object and wait for the tape to adopt the object’s surface temperature before measuring.
•How to Select the Measuring Unit
Remove the batteries and set the measuring unit switch to the desired unit.
8. D:S Ratio
The thermometer has a visual angle and a visual spot size. Make sure the target is larger than the unit’s visual spot size. The smaller the
target, the closer you should be to it. The relationship between distance and spot size is 6:1.
Units in mm, D = distance, S = spot size

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9. Battery Replacement
Change the batteries whenever the symbol appears on the display. Remove the battery cover and replace the batteries with new ones.
Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulted
from (incorrect) use of this device.
For more info concerning this product, please visit our website www.velleman.eu.
The information in this manual is subject to change without prior notice.
DVM77N – IR-ZAKTHERMOMETER
1. Inleiding
Aan alle ingezetenen van de Europese Unie
Belangrijke milieu-informatie betreffende dit product
Dit symbool op het toestel of de verpakking geeft aan dat, als het na zijn levenscyclus wordt weggeworpen, dit toestel schade kan
toebrengen aan het milieu.
Gooi dit toestel (en eventuele batterijen) niet bij het gewone huishoudelijke afval; het moet bij een gespecialiseerd bedrijf
terechtkomen voor recyclage.
U moet dit toestel naar uw verdeler of naar een lokaal recyclagepunt brengen.
Respecteer de plaatselijke milieuwetgeving.
Hebt u vragen, contacteer dan de plaatselijke autoriteiten inzake verwijdering.
Dank u voor uw aankoop! Lees deze handleiding grondig voor u het toestel in gebruik neemt. Werd het toestel beschadigd tijdens het
transport, installeer het dan niet en raadpleeg uw dealer.