Velleman EVM439 - Manual (Page 4)

EVM439
00 (30/09/2008) 4
• Use the original packaging if the device is to be transported.
• All modifications of the device are forbidden for safety reasons.
• Only use the device for its intended purpose. Using the device in an unauthorised
way will void the warranty.
• Readings may be affected if the unit is operated within radio frequency
electromagnetic field strength of about 3 volts per meter, but the performance
of the instrument will not be permanently affected.
Note: under an EM field of 3V/m from 350 to 550MHz, the maximum error is
8°C (14.4°F).
• This device contains a class 2 laser (Output power < 1 mW, wavelength
635~660nm). DO NOT STARE INTO BEAM, eye damage may result.
4. Features
• non-contact infrared laser thermometer
• LCD display with backlight
• temperature readout in °C or °F
• Continues Real-Time maximum data
• hold mode
• Auto power-off (± 15 sec.)
• ‘trigger-to-scan' temperature function
5. Use
• Simply aim the infrared lens (4) at the target and press the Meas. key (6) to
display the target’s surface temperature. A red laser spot will appear on the target
during measurement. The distance to target ratio is 8:1, meaning that at e.g. 8
cm, the target must be larger than 1 cm to have a proper measurement. Make
sure the target area is within this field of view.
Display example
1. LCD display
2. Mode key
3. Battery cover
4. Infrared lens
5. Laser
6. Meas. Key