Hella Center 350 Manual De Instrucciones página 8

V. OPERATION INSTRUCTION
• Measuring Trigger
To measure a temperature, point the unit at an object and
pull the trigger. Be sure to consider distance-to-spot size
ratio and field of view. The laser is used for aiming the
target for reference. The temperature reading will be
updated on the LCD. When the operator releases the
trigger, the reading will automatically be held on the LCD
for 10 more seconds. After 10 seconds this thermometer
will power down itself to save battery.
• Distance to Spot Ratio (D/S)
You have to make sure that the detection area you want
to measure is larger than the required spot size to get a
correct reading. The temperature you get is an average
temperature of the detected region. The smaller the target,
the shorter distance is required for the measuring. When
measuring at distances up to 200 mm, the laser targeting
is partly accurate when the laser point is positioned 1 to
2 cm above the area which is to be measured.
Please refer to the diagram on the side of the unit)
Distance : Spot = 8 : 1
Spot size
Ø22 Ø52 Ø113
200
400
800
Measuring Distance
Unit : mm
• Emissivity
Emissivity is a term used to describe the energy-emitting
characteristics of materials. The higher of this value
means the more capability of radiation emittance the
materials has. Most organic materials and painted or
oxidized surfaces have an emissivity of 0.98. Metal
surfaces or shiny materials has a lower emissivity and
give inaccurate readings. Please note this during
applications.
• Maintenance
Blow off loose particles using a lens blow. Gently brush
remaining debris away with a lens brush. Carefully wipe
the surface with a moist cotton swab. The swab may be
moistened with water.
Note: Don`t use solvents to clean the glass lens.
• Replace Battery
Center 350
When the battery voltage drops INFRARED THERMOMETER
CAUTION
LASER RADIATION
DO NOT STARE INTO BEAM
OUTPUT < 1 mW AT 630 - 670 mm
below that required for reliable
CLASS A LASER PRODUCT
operation, the low battery
symbol will appear,
indicating it is the time to
replace the battery.
To change the 9V battery,
detach the battery compartment
cover by pushing the engraved
pattern on the handle and pull
down. Change the 9V battery
with new one and put the
battery cover back.
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