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Table Of Contents
General Description ............................................................................................ 3
Safety ................................................................................................................... 3
Getting Started .................................................................................................... 4
Installing Batteries........................................................................................... 4
Preparing the Instrument................................................................................. 4
Attaching the Optional Pitot Probe .................................................................. 4
Attaching a MicroPrinter.................................................................................. 4
Start-Up Sequence.......................................................................................... 5
Zeroing the Instrument .................................................................................... 5
Clearing the Memory....................................................................................... 5
The Display .......................................................................................................... 5
Modes ............................................................................................................. 5
AXD 550 Keypad and Menus.............................................................................. 6
The AXD 550 Keypad ..................................................................................... 6
Primary Key Functions: ............................................................................. 6
Secondary Key Functions: ........................................................................ 7
Menu Selections.............................................................................................. 7
Menu items (to select any of the following press
.
): .................................. 7
Using the AXD 550 .............................................................................................. 8
Basic Functions............................................................................................... 8
To Change Units: ...................................................................................... 8
To Hold a Reading (For storage or printing):............................................. 9
Measurement Modes ...................................................................................... 9
Pressure Selection: ................................................................................... 9
Velocity Selection: ..................................................................................... 9
Volume Selection (or reviewing the latest area):....................................... 9
Area (review or select new value): ............................................................ 9
Rectangular: .............................................................................................. 9
Round:....................................................................................................... 9
Data Storage ................................................................................................... 9
Troubleshooting................................................................................................ 10
Maintenance ...................................................................................................... 11
Appendix A: Traversing a Duct to Determine Average Air Velocity
or Volume........................................................................................................... 12
Where to Take the Measurement.................................................................. 12
Traversing a Round Duct .............................................................................. 12
Traversing a Square Duct ............................................................................. 12
Notice of Disclaimer ...................................................................................... 13
Appendix B: Time Constant Averaging Technique ....................................... 14
