Retrotec DucTester 341 - Manual (Page 34)

Page 34 of 83
©Retrotec Inc. 2014
7.2 Mode Setup for various standards around the world
Table 4: Gauge Mode Setup for various standards around the world
Standard:
Region:
France
Res
France
Apt
France
Comml
Pressure
Pa Pa Pa
Flow
m3/hr m3/hr m3/hr
7.3 Setting up and using the DM32 gauge for Duct testing
3. Set up the gauge to show the results you require
Tap [Channel B] on the screen to select a different Result, or tap the [Result to be
displayed] button in the [Settings] menu. Typically, choose between Flow or Flow/Area.
Units for flow are typically CFM, and units for Flow/Area are typically CFM/ft 2 , CFM/100 ft 2 ,
or CFM/1000 ft 2 .
If Flow/Area is the Result is selected, the [Area] button will be appear on the Home screen.
Tap the [Area] and enter a value to change the area in units of sq ft. The [Area] can also be
changed from the [Settings] menu.
4. Set up the gauge to show only the fans and ranges you need, and set the ones currently in use
Press the [Device] button (fan icon from the Home screen) and select [340].
Next, select Range Configuration [74]. If Range Ring installed on fan is not Range 74-Range,
adjust the setting on the gauge to match what is installed.
5. Set up the gauge for proper time averaging.
Press the [Settings] button and toggle [Time Averaging] to get “4s”, or go to 8 seconds if
results are fluctuating.
6. Adjust fan speed on DucTester
Use [Set Pressure] on gauge: Press [Set Pressure] on DM32 gauge’s Home Screen, then
[25], [Set] . The fan will automatically accelerate and maintain a pressure of 25 Pa in the
duct system. Press [@] button until “@ is On” is displayed to view the result at exactly 25
Pa. If your standard requires 50 Pa, change the [Default @ Pressure] to 50 Pa from the
[Settings] menu.
OR
Use [Set Speed] on gauge: Press [Set Speed] on DM32 gauge’s Home Screen, then [50],
[Set] to set the fan speed to 50%. Press [  ] or [  ] buttons to adjust the speed until Duct
Pressure (Channel A) displays close to 25 Pa. Press [@] button until “@ is ON” is displayed
to view the result estimated at 25 Pa. If your standard requires 50 Pa, change the [Default
@ Pressure] to 50 Pa from the [Settings] menu.
OR