11
Measurement Method
Measurement Method
Measurement Method
Measurement Method
1. Using the Uni-directional Probe (Model 0962-00, 0963-00)
These probes have
directivity characteristics which require
the direction mark to be faced against the airflow
for measurement. When you are not sure of the airflow direction, slowly rotate the probe in the horizontal
direction, and select the point where the air velocity reading is maximum.
2. Using the Omni-directional Probe (Model 0964-01/02, 0965-00, 0965-01/03/04/07/08)
These probes have uniform sensitivity 360 degrees horizontally. They only need to be set vertical to the
airflow direction for measurement, regardless of the orientation in the horizontal direction.
<Caution>
The probe employs a set of air velocity sensor and temperature compensation sensor to compensate the air
velocity change corresponding to the air temperature change.
In order to obtain this compensation effect, it is required that both the air velocity sensor and the temperature
compensation sensor are exposed to the airflow to be measured under the same temperature condition. (Refer
to the dimensional drawings of probes shown on page 16, 17 to locate the air velocity sensor and the
temperature compensation sensor on each probe.)
Airflow
Direction Mark
Airflow
1. Uni-directional Probe
2.
Omni-directional Probe
Probe Direction
