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3. Measurement Mode
3.3 How to Measure Flow Rate in the Duct [Flow Rate Mode]
Example
Duct Area
r1 r2 r3
R
Display
< MENU >
1. MONITOR
2. MEASUREMENT
3. DATA OUTPUT
4. MEMORY CLEAR
5. UTILITY
< MEASUREMENT >
1. AVERAGE
2. INTERVAL
3. FLOW RATE
(a)
< FLOW >
1. S-TIME(S)
2. DATA (N)
3. POINTS
4. AREA(m2)
5. MEMORY
6. PRINT
7. SET OK!
<Measurement Setting
Screen>
1.800.561.8187
Measuring Point
(POINT)
Measurement
POINT 1 --- AVE 1 = Σ DATA (N)/N
POINT 2 --- AVE 2 =Σ DATA (N)/N
POINT M --- AVE M =Σ DATA (N)/N
* To start a measurement at each point: START/STOP key
* For detailed information on measuring at each point, refer to 3.2 How to
Collect Data at Certain Time Intervals [Interval Mode] (P16).
Measuring Point
Calculation result
r1=0.316R
r4
r2=0.548R
Air Volume (F) = Average Air Velocity (U) × Cross Section (AREA)
r5
r3=0.707R
r4=0.837R
r5=0.949R
Key
MENU
△, ▽
SET
△, ▽
SET
△, ▽
01
010
SET
016
0.100
YES
YES
SET
www.
FLOW RATE
indicated in m³/hour and m³/min
(1) Press MENU key.
(2) Select 2. MEASUREMENT.
Then press SET key.
(3) Select 3. FLOW RATE.
Then press SET key.
(4) Set the measurement condition
in the same manner as when
configuring Average Mode (P14).
When the measurement condition is configured, select 7.
SET OK!, and press SET key.
.com
Average Air Velocity
(AVE1+AVE2+···AVE N)
U =
No. of Points (M)
Procedure
☆ To select the item to be
changed
△, ▽⇨SET
☆ To change setting value
and YES/NO.
△, ▽⇨SET
☆ Setting is complete.
7. SET OK! ⇨ SET
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18
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