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We would suggest to set the free area
dimension before you start measuring
the air velocity so after you measure the
air velocity, you can jump to the air flow
mode to view the cubic feet per minute
without further changing the free area
dimension.
Cubic equations:
3
CFM (ft /min)
= Air Velocity (ft/min)xArea (ft )
CMM (m /min)
= Air Velocity (m/sec)xArea (m ) x 60
Units Conversion Table:
1 m/s=
1 ft/min=
1 knots=
1 km/hr=
1 mph=
1 m/s=
1 ft/min=
1 knots=
1 km/hr=
1 mph=
Note:
On initial start up the unit will display
pH, knots. (See Fig.15)
Fig.15
3
m/s
1
0.00508
0.5144
0.2778
0.4464
km/hr
3.6
0.01829
1.8519
1
1.6071
vel
FLOW
REC
MIN
MAX
AVG
ft/min
196.87
1
101.27
54.69
87.89
mph
2.24
0.01138
1.1523
0.6222
1
Hold PH Knots
AREA
14
2
2
knots
1.944
0.00987
1
0.54
0.8679
ft/m
ft
m
m/s
mil/h cfm
km/h cms
2
2
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