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*1) Forward-direction signals are taken in with forward total time measurement, while reverse-direction signals are taken in with reverse
total time measurement. They are conducted alternately for the transmission count. Forward and reverse signal data is added for the
transmission count and averaged. The result is 1 output of signal in forward/reverse direction.
Window
(WID)
Ultrasonic signal
(SIG)
Transmission start
(TRG)
A
transmission signal
B
receieved signal
Measurement window
Window open
Trigger
Part B magnified
Received signal
Part A magnified
Transmission signal
[Outline drawing of signal processing]
Transmission
voltage
Transmission pattern
(Example: Burst 3)
Trigger level
0V
0.75V
1.0V
-0.75V
-1.0V
Detection point
Forward total time measurement Reverse total time measurement
Signal peak
Upstream side
Sensor
transmission
Downstream side
Sensor reception
Upstream side
Sensor reception
Downstream side
Sensor
transmission
Transmission interval
Note) Make the setting, following the description in “6.5.6. Checking received waveforms”.
Operation
(example)
Set measurement method to “METHOD 1”.
Key operation Description Display
▼
Press the key for 4 times to display “MAINTENANCE MODE”.
MAINTENANCE MODE
ENT
▼
Press the
ENT
key once to display “RAS INFORMATION”.
RAS INFORMATION
0000000000000000
▼
Press the key for 14 times to display “DETAILS”.
DETAILS
ENT
▼
Press the
ENT
key once to display “TRANS.COUNT”.
TRANS.COUNT
128
▼
Press the key for 4 times to display “MEAS.METHOD”.
MEAS.METHOD
METHOD:2
ENT
▼
Press the
ENT
key once to select, and press it once again to blink on the
2nd line.
MEAS.METHOD
METHOD:2
▼
Press the key twice to display “METHOD 1”.
MEAS.METHOD
METHOD:1
ENT
▼
▼
▼
▼
Press the
ENT
key once to register.
MEAS.METHOD
COMPLETE
↓
――― “METHOD 1” has been registered. ―――
MEAS.METHOD
METHOD:1
ESC
Press the
ESC
key twice and then press the key once to enter the
measurement mode.
0.000 m/s
0.000 m3/h
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