5
Chapter 3
Operation
Keypad Functions
ON/OFF Key
Press to turn the Model 9515 on and off. During
the power up sequence the display will show the
following: Model Number, Serial Number,
Software Revision, and Last Date Calibrated.
ft/min / m/s Key
Pressing this key changes the display to read air
velocity.
°C / °F Key
Pressing this key changes the display to read
temperature.
Changing Units
To change units, first put the desired measurement
(air velocity or temperature) on the display. Then
press and hold the left, unlabelled key for five
seconds. Finally, use the
ST
and ENTER key to
select the units.
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