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1010GCNFM-3C
Section 4
To change the default setting:
1. Press the <Right Arrow> to access the [Total Volume Units] option list.
2. Use the <Up or Down Arrow> to move the cursor to the desired Total volume units.
3. Press <ENT> to store selection.
4.6.7 TOTALIZER SCALE
After you select totalizer units, the meter automatically computes a prefix to provide the best combina-
tion of capacity and resolution (e.g., KCU FT/HR). The Totalizer Scale menu cell shows the results. If the
displayed scaling is not suitable, you can edit it by accessing the option list. Note that this scaling applies
to all flow total data displayed on the flow display screen, even if the units do not appear next to the data
(because there may not be room on the screen). Therefore, always keep this prefix in mind when you
enter totalizer-related data.
To select a different Totalizer Scale:
1. Press the <Right Arrow> to access the [Totalizer Scale] option list.
2. Move the cursor to the desired display scale.
3. Press <ENT> to register selection.
4.6.8 TOTAL RESOLUTION
The flowmeter assigns multiplier prefixes for the flow total units you selected (e.g., KCU FT). It provides
three resolution (or capacity) levels. Therefore, actual Totalizer display units depends on the selected
multiplier. Check the total units by accessing the Totalizer Scale menu cell.
If you use the totalizer (TOTCNT) relay output, take into account:
a) The TOTCNT relay output pulses at a maximum rate of .5 pulses per second (.5 Hz).
b) The meter sends a totalizer output pulse for every advance of the rightmost visible totalizer digit.
It is therefore possible for a high flow rate to persist long enough to exceed the relay output’s .5 Hz rate.
If this occurs, the meter will store excess pulses in an overflow buffer, then route them back to the relay
when the flow rate drops enough to allow the TOTCNT output to “catch up.” However, exceeding the .5 Hz
rate for long periods could cause an excessive accumulation of buffered pulses. These will continue to
trip the relay after the flow rate lessens, or even stops. If this occurs, an external Totalizer driven by the
output will be unable to indicate the current flow total. Therefore, you should select a resolution to ensure
that, even at the maximum expected flow rate, the TOTCNT pulse will not be activated more that .5 times
per second for any appreciable length of time. Note that resetting the Totalizer also clears the overflow
buffer.
To change the default resolution:
1. Press the <Right Arrow> to access the [Total Resolution] option list.
2. Move the cursor to the required resolution.
3. Press <ENT> to store selection.
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