Retrotec DM-2A Manual de usuario descargar pdf (Pagina 18)

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©Retrotec Inc. 2012

Setup

The Setup key allows access to the Setup Menu, where the gauge is customized. For

more information about navigating the menu and the options available, see Advanced

DM-2 Options.

Setup is used to enable or disable each of the various modes and devices, to configure

the units of measurement for each mode, and to configure the operation of the DM-2. To navigate

around the setup menu, use the up or down arrows []and [] to scroll through the menu. Use the

left or right arrows [] and [] to choose between the different options. The configuration is saved in

non-volatile memory so the DM-2 will have the same configuration each time it is turned on.

The Setup menu provides access to the following settings:

 Full Screen Timeout – specify the time before the screen changes to the full screen format

 Restore Settings – used to restore the DM-2 to factory settings

 Language – choose a language for the DM-2 menus and results

 Battery Type – choose between rechargeable and non-rechargeable (alkaline)

 Display Version Info – view the system version information

 n – the slope of the line that the DM-2 will use to extrapolate results, when using the @Pressure

function

 Power Down Hour – the DM-2 will automatically turn off after the set number of hours

 Surface Area Unit – specify the units that will be used for enclosure area

 Building Volume Unit – specify the units that will be used for enclosure volume

 European , Separator – specify whether to use a comma in place of a period in the numbers

displayed

 Sig Figs – Select either 2.5, 3.0, or 3.5 significant figures (e.g. 1134 is displayed as 1135 for 3.5, 1130

for 3.0, and 1150 for 2.5)

 Device Setup – enable or disable the use of compatible devices and associated Flow Ranges

 Mode Setup – disable or specify the units for available modes

When numerical input is required, the Setup key functions to input the number three.

Baseline

The Baseline function allows the user to measure the bias pressure, or Baseline

pressure, under the current test conditions. Once measured, the DM-2 will

automatically subtract the baseline pressure from all subsequently measured pressure

readings, and will display only the adjusted pressures on the screen. Some buildings

have an initial pressure imbalance between the indoors and outdoors, prior to any testing. The DM-2

averages the background pressure for the duration of the acquisition period. A 60 second baseline

reading is typically enough to establish an accurate baseline measurement. If the building conditions

change during the test, the baseline should be cleared, and a new measurement should be taken.

Remember, if [Exit] is pressed to stop the fan, the baseline measurement will also be cleared, and will

need to be re-taken.

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Retrotec DM-2A Manual de usuario Pagina 18