Airflow Instruments ProHood PH730, Owner'S Manual

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4
Airflow™ Instruments ProHood Capture Hoods PH730/PH731
Flow Manifold
Backpressure Flap
Temperature
Sensor
Mount for Hood
Support Pole (4)
Figure 4: Features of the ProHood Capture Hood Base, Inside View
Micromanometer
The micromanometer is a multifunction instrument used to measure air velocity, air flow, absolute and
differential pressure, temperature, and humidity measurements when used with the tools listed below.
The lightweight micromanometer incorporates auto-zeroing for high-accuracy, low pressure
measurements. Measurements can be stored to memory for later recall or downloaded to a PC using the
LogDat-CH software and USB cable or with Bluetooth communications.
Standard Tools
This section gives a brief description of standard tools for the micromanometer.
Pitot Tube
The pitot tube is primarily used to obtain air velocity, air volume, and velocity pressure measurements
within ductwork. An 18 in. (46 cm) pitot tube is included with the PH730 or PH731 kits. Alternate sizes are
available.
Static Pressure Probe
The static pressure probe is primarily used to obtain static pressure measurements within ductwork.
Differential pressure measurements across a filter or coil can also be performed by placing one probe
upstream and the other downstream of the filter or coil.
ProHood Capture Hoods
Capture hoods are used to obtain volumetric air flow measurements through diffusers, registers and
grilles. Capture hoods are available in a kit with one 2 ft

2 ft (610 mm

610 mm) fabric hood, frame,
and base assembly. Alternate hood sizes are available. Descriptions and part numbers can be found in
Table 2 of Chapter 2 of this manual
.