Omega HHF142 User Manual page 11

2 ,
press the "SET" key to accept
right, press the "SET" key to accept O and to finish the editing of the
Duct Height. ( Note: The blinking digit is the current digit . f or editing.
To increment the current digit, the "ADJ" ke y can be pressed. To save
the current digit and move the cursor
ff
be pressed. a digit needs to be edited again , the "SAMPLE
key can be pressed to move the cursor
RATE/Arrow"
11. The display now shows LE n stating that we're now in the Length
Entry menu. Press the "ADJ" key to enter the Length Entry menu. The
Length can now be edited one digit at a time.
12. To enter in 12.0 inches, press the "SET" key to accept O and move to
the cursor to the right, press the "ADJ" Key to increment the current
I ,
digit to press the "SET" key to accept
to the right, press the "ADJ" Key twice to increment the current digit to
2 , press the "SET" key to accept 2 and move to the cursor to the
right, press the "SET" key to accept O and to finish the editing of the
Duct Length.
13. The display now shows
Duct setup and are exiting Volume Duct Entry mode.
14. Now press the "VOLUME FLOW" Key to enter Volume Flow Mode.
15. A 12" x 12" Rectangular duct can now be measured for Volume Flow.
( Note: To get an accurate reading , increase the sample rate to 16
pressing the "SAMPLE RATE" ke y . Then slowl y move the
Seconds
by
air probe around the entire duct opening
across the duct opening. This will give a more accurate value f or the
volume . fl ow rate out o f the duct .. )
The following page shows a graphical representation of the steps required to
enter the duct dimensions into the HHF142.
2
and move to the cursor to the
to
the right , the "SET" ke y can
I
and move to the cursor
donE
which means that we've completed the
to
get an average reading
Rev 1.9, 10-Jun-2008
Page 10 of28
to the left again. )