Wohler FA 320 Manual page 16

3.3 Settings
3.3.1 Entering non-sleep mode
When the meter is off, press and hold the POWER key and the Mx/Mn key for
more than two seconds to enter non-sleep mode.
3.3.2 Backlight
Press and hold the ENTER key and the HOLD key at the same time to turn on/off
the backlight.
3.3.3 Selecting the unit
When the meter is off, press the POWER key for more than two seconds to enter
the unit selection mode. Press ' or - to select the unit and then press ENTER to
save. (°C, %RH, m/s, m³/m, cm or °F, %RH, ft/m, cfm, inch).
3.3.4 Velocity with average
While the meter is in the velocity mode and the record is stored in the memory,
press the ENTER key to review the average value. Press the MX/MN key to view
the minimum/maximum value of the memorised velocity. Press the ENTER key
again to return to the normal mode.
The memorized values will be deleted after the meter is powered off.
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Wöhler FA 320