Greyline AVFM 6.1, Руководство пользователя

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Page 15
AVFM 6.1 Area-Velocity Flow Meter
CALIBRATION (cont.)
Signal
Cutoff
Adjust the setting in percent to suppress industrial noise from
potentially being read as Doppler signals. When Signal
Strength is less than Signal Cutoff, the velocity measurement
will report 0.00 on the LCD display.
Damping
Velocity Set the dampening value for the velocity reading. Lower
values provide fast response to changing velocities, and higher
values provide a slower response. A value of 0 disables
dampening. Factory default value is 10%.
Level Set the dampening value for the level reading. Lower values
provide fast response to changing levels, and higher values
provide a slower response. A value of 0 disables dampening.
Factory default value is 10%.
LOE Time Should the level reading be lost because of air or debris in the
system, the LOE Time will cause the meter to hold the last
valid level reading until the LOE Time is expired, at which
point the meter will produce a Loss of Echo alarm message.
Having a LOE Time in the meter means that intermittent air or
debris issues in the system will not cause the meter to lose
flow reading. If you desire that the meter respond quickly to a
Loss of Echo, set the
LOE Time
to a low value.
Cal
Constant
Used to scale the velocity output of the meter. Factory default
is 1.000.
--Calibration-------

Range
Max 180.00 in
Min 8.00 in
Level
Max 180.00 in
Min 1.00 in
20mA 180.00 in
4mA 0.00 in
Velocity
20mA 10.00 ft/s
4mA 0.00 ft/s
Flow
Min 0.00 gal/m
20mA 500.00 gal/m
4mA 0.00 gal/m
Lvl Offset 0.00 in
Signal Cutoff 10 %
Damping
Velocity 10 %
Level 10 %
LOE Time 30 sec
Cal Constant 1.000