Retrotec DM-2A Manual de usuario descargar pdf (Pagina 31)

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©Retrotec Inc. 2012

However, if it was known that n was 0.7, the flow at 25 should have been:

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This value is less than 3% off from what it should be. If the test pressure was within 1 or 2 Pa of the

reference pressure of 25 Pa, the @ Pressure reading would be exact.

To change the n value

1. Press [Setup] to access the Setup menu.

2. Press [] or [] to select "n" in the list. Press [Enter].

3. Input the new value between 0.5 and 1. Press [Enter].

Power Down Hour

The Power Down Hour helps to maximize battery power by enabling the DM-2 to automatically turn off

when it has been inactive for a set time period. The feature can be set to any value between 0 and 255

hours. Applying a 0 value will disable the Power Down feature, and the DM-2 will never automatically

shut down.

To change the Power Down Hour

1. Press [Setup] to access the Setup menu.

2. Press [] or [] to select "Power Down Hour" in the list. Press [Enter].

3. Input the new value. Press [Enter].

Surface Area Unit

For some results (e.g. Flow/Area, EqLA/Area, Hole Flow) an area measurement is required to calculate

them. The units used for area can be configured. The area units may be set to square feet (ft

), square

meters (m

), square centimeters (cm

), or square inches (in

To change the Area units

1. Press [Setup] to access the Setup menu.

2. Press [] or [] to select "Surface Area Unit" in the list.

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Retrotec DM-2A Manual de usuario Pagina 31