TIF VA500A Digital HVAC Analyzer User Manual

Page 19

Figure 10

5.4.7 The LCD will display the

measured Air Volume in
CFM (cubic feet per minute)
(Fig. 10).

5.4.8 To repeat this measurement

or IF YOU WISH TO MEA-
SURE ADDITIONAL
OPENINGS, press ENTER
and repeat steps 5.4.2-5.4.7.
Measure each opening as
previously described in

order to obtain an overall

average reading. At the
completion of each test, the
sum of ALL measurements
can be displayed by pressing
the

button.

*When moving probe along
the grill’s borders (A,D) keep
the probe halfway out of the
grill.

Note: Aim at getting an average

reading from all available open-
ings. (see next step)

5.5

Measuring Capacity

IMPORTANT NOTE: Before you begin to measure capacity,
press the MODE button until you reach the HUMIDITY
mode. Put the probe in front of the inlet air (or ambient
room humidity) so that the sensor’s cover is facing AWAY
FROM THE INLET GRILL and wait until the humidity meas-
urement stabilizes (this also allows the “TEMP” measure-
ment to stabilize). DO NOT place the probe at the output
grill because it will take a long time (10 minutes) to return to
normal room temperature and humidity conditions!
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