5
Chapter 3
Operation
Keypad Functions
ON/OFF Key
Press to turn the Alnor AXD610/A
IRFLOW
PVM610 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, converted from.
in H
2
O / Pa / hPa /
kPa / mm HG Key
Pressing this key changes the display to read
differential pressure.
0 Key
Pressing the 0 key zeroes the pressure
measurement.
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.
