Dwyer UXF2 User Manual
Page 109
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5.7.1.3. Displaying the data in maintenance mode
Follow the procedure shown below to check possible display errors.
Keying order
Description
Indication
ź
Press 4 times to display “MAINTENANCE MODE.”
MAINTENANCE MODE
ENT
ź
Press once to display “CURRENT CARIBRATION.”
CURRENT
CALIBRATION
ź
Press 12 times to display “DATA DISPLAY.”
DATA DISPLAY
ENT
ź
Press once.
• Displays the measurement value of transit time, T1
(forward time), and T2 (reverse time).
T1: 0.0000
usec
T2: 0.0000
usec
ź
Press once.
• Displays the measurement value of average transit
time, T0, and transit time difference, DT.
T0: 0.0000
usec
DT: 0.00 nsec
ź
Press once.
•
Displays the calculated value of pass time of the
substances other than fluid, Ta, and angle of
incidence of the fluid,
T.
Ta: 0.0000
usec
LJ: 0.000°
ź
Press once.
• Displays the calculation value of sound velocity in
fluid, Cf, and Reynolds number, Re.
Cf: 0.0 m/s
Re: 0
ź
Press once.
• Displays correction coefficient of flow velocity
distribution, K, and flow velocity, V.
K: 1.3333
V: 0.000 m/s
ź
Press once.
• Displays the intensity of received signals. The
smaller the value, the larger the intensity of received
signals. Normal measurement values fall within the
range from 4700 to 8000. If the display appears as
8484, no signals are being received. Ultrasonic
waves may not be transmitted because of insufficient
water volume or rust of piping.
AGC U:
08484
AGC D:
08484
ź
Press once.
• Displays the peak value of received signal waveform.
Normal values stably fall within the range from 395
to 415. If the value fluctuates significantly, objects
that constitute barriers against ultrasonic wave
transmission such as air bubbles or foreign matter
may be contained in the fluid. Stop the flow and
check if normal value is resumed. If so, there is a
possibility that air bubbles are contained.
P/H U:
164
P/H D:
164
ź
Press once.
• Displays the state of the ultrasonic transmission
voltage circuit. It is normal if the value for DRV_R
falls within the range from 810 to 890.
DRV S:
227
DRV R:
845
ESC
Obtain a measurement-mode display using the
ESC
and
the
keys.
0.000
m/s
0.000 m3/h
BULLETIN F-70