Omega HHF-308 Guia Del Usuario página 7

To power off the HHF-308, press and hold the /WCI button for at least
3 seconds.
To make a measurement, turn the vane at the top of the unit perpendicular to
the source of air or wind. Allow a few seconds for the reading to stabilize. It
makes no difference whether the front of back of the vane faces the wind or air
flow. The measured air speed value will appear on the upper readout of the LCD
(Fig. 2, Callout M).
The HHF-308's default air speed unit is ft/min
(fpm). To change the air speed unit, press the
UNIT button once. On the top line of the LCD,
ft/min will begin flashing. Then press the
SET/HOLD button as many times as necessary
until the desired air speed unit appears,
flashing, on the top line. The figure at right
shows the six available air speed units in their
selection sequence.
To save the selected air speed unit, press the
UNIT button twice. The label of the selected unit will stop flashing and the
anemometer will resume operating in real-time measurement mode.
The HHF-308 will "remember" the air speed unit in use when it powers off and
will resume using that unit upon restart. So if you always use fpm, you need not
perform the above procedure. And if you always use the same air speed unit
other than fpm, you need only perform the above procedure once—until the
next battery replacement.
The HHF-308 also measures ambient temperature for display on the LCD's
lower readout (Fig. 2, Callout N). The HHF-308's default temperature unit is °F.
To change the temperature unit, press the UNIT button twice. In the bottom
right corner of the LCD, °F will begin flashing. To switch to °C, press the
SET/HOLD button. °C will replace °F, flashing. To save °C as the temperature
unit, press the UNIT button. °C will stop flashing.
To hold any reading ("freeze" the display), press and hold the SET/HOLD
button for at least 3 seconds. To release the hold and resume displaying real-
time values, press the button again. This function is very useful for making
measurements in low light or when the source of air or wind is above your
head, below your knees, or around a corner. You can make a measurement,
hold it, and then read the display up to 5 minutes later after re-positioning the
LCD at eye level.
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