Wind pressure, speed, and volume meter - fresh air cabinet | booster cabinet

SG312Wind pressure, speed, and volume meterInstructions for use：

• Power on status:

Connect the power supply or install the battery, press the power button, and the instrument will enter the initialization state. The Chinese content displayed on the screen is shown in the above figure. Instrument preheating3After the displayed data stabilizes, measurements can be taken in minutes.

• Reset: In the measurement state of air volume, wind speed, pressure, and temperature, pressing the reset button can clear the initial value of pressure, making the displayed data《00000

3How to translate

Pitot tube coefficient, air density, and vent area settings:Press the settings button, and when the display screen shows the pitot tube coefficient, press►rightShift key, with each press, the numeric cursor moves one digit to the right. press▲Move upPress the key, and with each press, the number flips up one digit. press▼ Move downkeyEvery time you press it, the number flips down one digit（0.990L1.010Type Pitot Tube Coefficient－The0.810S0.860Type Pitot Tube Coefficient

• － ）. After setting, press the setting button again to set the air density using the same method as above; Press the settings button again to set the air outlet area using the same method as above. Total pressure measurement: Use instrument positive pressure interfaceConnect Pitot TubeFull pressure port(At this time, the negative pressure end of the instrument is connected to atmospheric pressure)Hold the pitot tube firmly by hand and make it as perpendicular as possible to the pipe wall and the middle position of the pipe,As shown in the figure below. A

5At this time, the instrument display value is the dynamic pressure data value Zero the instrument before measurement．static pressure(Positive and negative pressure)Measurement: Connect the instrument positive pressure interface to the pitot tube static pressure port(At this time, the negative pressure end of the instrument is connected to atmospheric pressure)Hold the pitot tube firmly by hand and make it as perpendicular as possible to the pipe wall and the middle position of the pipe,As shown in the figure below. A

At this time, the instrument display value is the static pressure data valueZero the instrument before measurementdynamic pressure=total pressure

-Static pressure (full pressure can be substituted into Bernoulli method to convert wind speed and air volume)

Pitot tube has

The two interfaces that come straight are the dynamic pressure port and the one perpendicular to the pipe body is the static pressure port

Measure differential pressure