Velleman EVM439 - Manual (Page 6)

EVM439
00 (30/09/2008) 6
8. Battery
• The thermometer incorporates a visual low battery indication as follows :
‘Battery OK’: measurements are possible
‘Battery low’: battery needs to be replaced, measurement still
possible
‘Battery Exhausted’: measurements no longer possible, replace
battery.
• To replace the battery, wait until the instrument powers off.
• Open the battery compartment by sliding the battery cover (3) downwards.
• Replace the battery with two new type AAA, 1.5V batteries.
• Close the battery compartment by sliding the battery cover back in place.
A malfunction may occur if the power is on when the battery is
replaced. If a malfunction occurs, restart the device.
Keep the battery away from children.
9. Technical Specification
measurement range -35°C ~ +365°C (-31°F ~ +689°F)
operating range 0°C ~ +50°C (+32°F ~ +122°F)
storage temperature -20°C ~ +65°C (-4°F ~ +149°F)
accuracy
(t
amb
= 23 ± 3 °C)
T
obj
= -35~0°C: ±(2.5°C+0.05/°C)
T
obj
= 0~365°C: ± 2,5% of reading or 2,5°C (4,5°F)
whichever is greater
resolution 0.2°C /0.5°F
response time (90%) 1 sec
emissivity 0.95 (fixed)
display LCD
wavelength 5µm
- 14µm
auto switching-off 15 sec
distance-to-spot ratio D:S = 8:1
power supply 2 x AAA, 1.5V battery (incl.)
dimensions 172.9 x 36.0 x 71.5 mm
weight 152 gr. (5.36 oz) (batteries included)
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.perel.eu .
The information in this manual is subject to change without prior notice.