Retrotec DucTester 200 series with DM32 - Manual (Page 4)

Flow at the induced
pressure is the simplest
result. (
Also available in
metric units ) .
Flow per square foot is
required in some states
such as WA.
(Enter an area)
Flow per 100 sq ft is
required in many states.
(Enter an area)
Flow reads “--” at test pressure?
If the test pressure has been reached, but “--” appears,
the fan is running too slowly to accurately measure flow.
□
Add the next lower Range
□
Change [Range] to match
□
Re-adjust fan speed.
Cannot achieve test pressure at full speed?
If fan reaches 100% speed before reaching 25 Pa:
□
Remove a Range Ring and try again.
□
Change [Range] on the gauge to match.
□
Check seals on all registers. Look for disconnected
ducts or ducts open to outdoors.
□
Tap [@ Pressure] to get the gauge to calculate
what the flow would be at exactly 25 Pa.
Page 4 of 8
Get the results you need
□
Tap the [Channel B] key to select a different
Result, or tap the [Result to be displayed] key
on the [Settings] menu.
Show leakage area Result
Step 5: Desired results not achieved?
CT
DC
DE
GA
ID
IL
IA
ME
MD
MA
NH
NJ
NY
NC
PA
RI
TX
VT
Jog speed or pressure and Hold display
Equivalent Leakage Area (EqLA) describes the leakage
area in terms of one large hole in a flat surface.
Tap the [Channel B] key, then
, and select
“EqLA: sq in”
[Channel A] shows the duct pressure and
[Channel B] “EqLA” shows the combined size of all
the holes in the ducts.
Leakage area is not a required result, but is a nice way to
visualize the size of the hole in the ducts.
When a Result is chosen that requires an area or volume,
will be shown on the Home screen. Tap to change.
The area and volume can also be changed from the
menu.
Tap [50] [Set] to set the fan speed to 50%
Tap [25] [Set] to set pressure to 25 Pa
The Jog keys become active on the Home screen.
Use the keys
to decrease or increase the target by 5 Pa or 5%.
Tap [Channel A] to
“HOLD!” Result.
Result will remain fro-
zen on display until Jog
is used or [Channel A]
is tapped again.
Tap [Channel B]
when “HOLD!” is on,
to see other Results.
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