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4. Operation
How to load batteries
1) Place POWER switch in OFF position.
2) Slide and open the lid of battery compartment at the back of instrument and load five batteries
(LR6) properly as per instruction.
3) Slide and close the lid of battery compartment. Place POWER switch in ON position and confirm
that the battery alarm (LED ) does not light up.
NB: If it lights up, replace batteries to new ones. At replacement of batteries, make sure to place
the POWER switch in OFF position.
Heat-running
Place POWER switch in ON position and run the heat for 2 minutes. This is the time required to
stabilize after electric current flows through the circuit and sensor. This procedure is necessity for
accurate measurement.
How to measure air speed
1) Remove the sensor cap and place function switch in VELO position.
2) Measure air speed facing a wind direction mark of probe (red arrow mark under the detection
window) to windward.
NB. If the mark is slanted against the wind
direction, the air speed will be indicated
higher than the actual value.
* When the temperature to be measured is high, it will take a few minutes until the
temperature of sensor rises to the value ( about 3 min. from 25°C to 80°C ).
Make measurement after the temperature of sensor is fully stabilized.
wind
wind direction mark
4
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