Chapter 2: Unpacking and Setting Up 11
Connecting a Pitot Tube
When the micromanometer is connected to a pitot tube, air velocity or air volume measurements can be
taken. The pitot tube is connected to the (+) and () pressure ports on the micromanometer using two
pieces of tubing of equal length. The total pressure port of the probe connects to the (+) port on the
meter, and the static pressure port of the probe connects to the () port on the meter.
Total Pressure
Port (+)
Static Pressure
Port ()
Figure 8: Pitot Tube
Note
The pitot velocity needs a valid temperature to perform the standard or actual velocity correction. This
Probe, and no probe is connected, dashes (------) will appear on the display.
For more information on entering the temperature manually, refer to the Actual/Standard Setup
section of this manual.
Do not use the instrument or probes near hazardous voltage sources since
serious injury could result.
Connecting the Static Pressure Port to the Micromanometer
The static pressure port on the static pressure probe will be connected to the (+) port on the
micromanometer. The (-) port on the micromanometer will be open to atmosphere (see Figure 9). The
Static Pressure probe is used to measure the duct static pressure and features a magnet which holds the
probe to the ductwork.
Magnet
Static Pressure Port
Figure 9: Static Pressure Probe
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