7
key to enter a new value. Press MODE/CLEAR
key to accept the value and return to
"
rdY
". To
take a volume measurement, use the READ key
as you would when taking a velocity
measurement.
The area value must be in either ft
2
for English
units or m
2
for metric units. To calculate the
square area of your measurement area, use the
formulas:
square or rectangle:
length x width = square area
round:
π
x r
2
= square area
where
π
≈
3.14 and r = radius
Note
:
If dimensions are in inches, divide the
result by 144 to obtain ft
2
, if in
centimeters, divide the result by 10000 to
obtain m
2
. Refer to Section 5 for more
details.
Low Battery Indication
When the "
LO BATT
" icon appears, the RVA+
has about 10 minutes of battery life remaining
after which the instrument will display
"
Batt
"
and shut off.