Wöhler FA 430 - Keypad

Design and function
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4.2 Keypad
Fig. 2: Keypad
The fan anemometer is operated using four keys. The keys have the following func-
tions
ON/OFF key
· Press briefly: Power on/off
· Press and hold: Access and exit Setup mode
HOLD/MIN/MAX key
· Press briefly: Freeze current reading; continue
to press the key after freezing to begin print-
ing.
· Press and hold: Display the lowest and high-
est measured value (MIN, Max)
· In the Average value mode (AVG): Save data
or begin calculating averages over a specified
time.
· In the Setup mode: Make settings