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Measurement Procedure
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Air Velocity, Temperature, Relative Humidity, and Wet Bulb Measurements
1.
Turn the instrument ON by pressing the ON/OFF button.
2.
Turn the temperature/humidity
sensor cover (located at the
center of the vane) to the
OPEN position. This will
expose the sensors to the air
flow in order to provide
temperature, humidity, and wet
bulb readings (see diagram).
3.
Press F1
to enter the
MEAS
measurement mode.
4.
Hold the vane sensor in the
stream of air with the vane's
temperature and humidity
sensors facing the oncoming
air stream.
5.
Read the Air Velocity, Temperature, Relative Humidity, Wet Bulb Temperature, and
Air Volume readings on the LCD (see
diagram).
6.
Use F1
to leave the measurement
EXIT
window.
7.
Use F2
to begin programming
INPUT
the area of the duct, or other enclosure,
necessary for Air Volume (CFM / CMM)
measurements. Refer to the separate
section on Air Volume measurements.
8.
Use F4
to print the measurement
PRN
data (see next paragraph).
9.
Move the rotating sensor cover to the closed position when the meter is not in use.
See diagram above.
Printing Measurements
1.
Perform the Measurement procedure as described above.
2.
Press F4
and answer YES when prompted.
PRN
3.
The instrument will print all the displayed data with
date/time stamps. See sample printout at right.
4.
Press the LINE FEED button to feed the paper.
T:
75.7oF
98.0
V:
WBT:
66.1oF
EXIT
INPUT
MEASUREMENT (MEAS) SCREEN
ACME CORP.
V:
T:
RH: 46.5%
WBT:61.3 F
VOL:174 CFM
06-17 01:49:07
SAMPLE PRINTOUT
5
Model 451181 Version 3.0 07/06
RH:
58.4%
FPM
VOL:
0.0CFM
PRN
600 MPH
75.2 F
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