User Manual

4.7.4 Back Pressure Compensation Measurement Mode

When measuring air flow in an environment with a strong wind or turbulent flow, it will produce

resistance for test air flow and system pressure. It is suggested you turn the Back Pressure

Compensation ON when the air flow is more than 1500 m

/h, otherwise you can test without the

Back Pressure Compensation ON.

1） When “B. Press” mode is turned on, press “START” and the measurement will begin.

2） When "Flap Open!" is displayed, close the Back pressure plate and press "START" to

start the measurement.

3) When the measurement stops, the air flow, as measured with Back Pressure

Compensation will be displayed.

4) After the measurement stops, press “SAVE” to save the data and the “Cycle” No. will

increase by 1.

5. Display Menu settings

（1）In the main interface, press for 2 sec to enter into

“MENU”.

（2）There are 5 option items in “MENU”:

1．Test Settings

2．General Settings

3．Record Processing

4．Communication

5．Print

MOVE

EXIT

2. General Settings

3. Record Processing

4. Communication

5. Print

SET

1.Test Settings