Page 18
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.com
OPERATION
To ‘wake up’ a battery powered meter, you may need to
hold the up arrow for 5 seconds and release. If the meter
does not wake up on the first attempt, repeat the 5 second
hold.
The
meter can come configured with one 7.2V ‘D’ size
replaceable battery pack. In this configuration,
the
only option/output is the scaled pulse output which
comes standard. The scaled output for the battery
powered option has a maximum pulse rate of 150 pulses/
second. Be sure to set your P value such that the meter will
function properly over the flow range in your application.
The sample rate of the meter is user selectable through
the SAMP tab in the meter’s sub-menu. Sample periods
of 1/5, 1/3, 1, 3, 5, 15, 30, and 60 seconds can be selected.
(A sample period of 5 seconds—5 year battery life—is the
default.)
Larger sample periods will yield longer battery life but
slower response time.
Care must be taken to select a
sample period that is suitable for your application. See the
table below for the expected battery life as a function of
sample period.
DAMP Settings for Battery Units
If SAMP (sample period) is set to less than one second, the
DAMP value represents the number of seconds (plus one)
used in the rolling average for the display. For example, if
DAMP is set to four, then when the meter begins to show
a flow rate, the rate displayed is the average of all the
readings taken in seconds
one through five (4 plus 1).
If SAMP (sample period) is set to one second or longer,
the DAMP value represents the number of sample periods
(plus one) used in the rolling average for the display. For
example, if SAMP is set at three seconds and DAMP is set to
four, then when the meter begins to show a flow rate, the
rate displayed is the average of samples
one through five
(4 plus 1). Note that depending on the settings selected,
Battery Life/Sample Period
For battery (BX) powered meters only.
Sensor sample period(s)
(Seconds)
Expected battery life*
1/5 (0.2)
7 months
1/3 (0.33)
1 year
1
2.25 years
3
4 years
5
5 years
15
6 years
30
6.25 years
60
6.5 years
*Based on 75% battery capacity at room temperature with
no option cards installed.
NOTE: If a large percentage of the meter’s life will be spent
below 0.5 meters/second and above cutoff, battery life will
be reduced.
Battery Powered Units
A power indicator is displayed in the lower left of the main
display window.
Any meter powered from an external power source will
display a power plug icon when running on external power.
If the connection to external power is lost, the meter will
switch to the backup battery and the power icon will switch
to a battery symbol.
OK
on the battery indicator means battery voltage is above
6.4 volts.
LO
on the battery indicator means the battery is low and
should be replaced soon.
OK
LO
P
OK
LO
Being powered by external
DC or AC
Being powered by battery -
voltage is sufficient
Being powered by battery -
voltage is low
1.2345678
100
TOTAL
CU FT
X1000
RATE
GPM
T UNIT
R UNIT SET P DAMP
SET 4
SET 4
SET 20
SET 20
SET F
SET F
EXIT
TOTAL = GALLONS
PRESS + TO SET TOTAL
UNITS FOR DISPLAY
T UNIT R UNIT SET P DAMP
SET 4
SET 4
SET 20
SET 20
SET F
SET F
EXIT
TOTAL:
PRESS TO CHANGE
GALLONS
0.0000000
SET ID
TOTAL
ACRE
FEET
RATE
GPM
OK
FORWARD TOTAL
FORWARD TOTAL
P
Power Indicators
If display reads, ‘BATT END’
replace battery
immediately.
BATTERY LIFE WITH MODBUS
®
OPTION!
IN THIS CONFIGURATION THE METER COMES STANDARD
WITH PULSE OUTPUT. WHEN ORDERED WITH THE
MODBUS
®
OUTPUT OPTION, BATTERY LIFE WILL BE
REDUCED TO 1 YEAR, OR GREATER, BASED ON USAGE.
REDUCE POLLING FREQUENCY AND MINIMIZE DATA
COLLECTED IN ORDER TO MAXIMIZE BATTERY LIFE.
it may take up to a minute for the displayed rate to take
full advantage of the DAMP filter. When starting with an
EMPTY PIPE it may take at least 30 seconds to register
any flow.
