7088-8000
-38
3. Press the
DOWN
ARROW
key.
The following is displayed:
4. Select one of the following time unit (per) options:
!
SEC
!
MIN
!
HR
(million gallons)
!
DAY
Max Flow Range (Menu 31) and
Min Flow Range (Menu 32)
These menus are used to enter the minimum and
maximum flow values for setting the volumetric flow
range. Setting the optimum flow range generally
improves the flowmeter’s response time.
NOTE: Whenever the pipe ID is changed, the
flowmeter returns the volumetric flow range
to its default settings. The default settings are
the minimum and maximum flows for the
new pipe ID that occur at +32 and -32 FPS
(+9.76 and -9.76 MPS).
Damping (Menu 33)
This menu is used to enter the value for the damping
coefficient. The damping coefficient suppresses short
term fluctuations in the indicated flow rate. The
displayed flow rate and the 4 to 20 mA current loop
output is a moving average of the last n seconds where
n is the damping value. Increasing the coefficient
increases the response time to changes. The coefficient
is adjustable from 1 to 99 seconds in 1-second
increments. Damping should be kept at a minimum
unless the velocity fluctuates wildly. If so, damping
should be increased just enough to reduce the
fluctuation to an acceptable degree.
Flow Units Per
Sec *Min Hour
Max Flow
2000.00 GPM
Min Flow
-2000.00 GPM
Damping
5 secs
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