FW-E112-P-MAN-EN_v0101_08
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2 - FLOWRATE
The settings for total and flowrate are entirely separate. In this way, different units of measurement
can be used for each e.g. cubic meters for total and liters for flowrate.
The display update time for flowrate is one second or more.
Note:
these settings also influence the analog output.
UNIT
2.1
SETUP – 2.1 determines the measurement unit for flowrate.
The following units can be selected:
mL - L - m³ - mg - g - kg - ton - GAL - bbl - lb - cf - rev - none - scf - nm³ - nL - P
Alteration of the measurement unit will NOT affect operator and SETUP-
level values.
Please note that the K-factor has to be adapted as well; the calculation is
not done automatically.
TIME UNIT
2.2
The flowrate can be calculated per second (/SEC), minute (/MIN), hour
(/HR) or day (/DAY).
Note:
Changes to SETUP 2.2 Time unit has an effect on the settings of
SETUP 6.2 Rate Min and SETUP 6.3 Rate Max and SETUP 3.5
Ratespan. Don’t forget to update these settings after a change.
DECIMALS
2.3
This setting determines for flowrate the number of decimals.
The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
Note:
Changes to SETUP 2.3 Decimals will also change the decimal
setting of SETUP 6.2 Rate Min and SETUP 6.3 Rate Max and
SETUP 3.5 Ratespan. Therefore it is wise to first determine the
required decimals for the flowrate.
K-FACTOR
2.4
With the K-factor, the flowmeter pulse signals are converted to a flowrate
unit. The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 2.1), for example per
liter.
The more accurate the K-factor, the more accurate the functioning of the
system will be. For examples read SETUP 1.3.
Alteration of the K-Factor will have consequences for Operator and
SETUP-level values!
DECIMALS K-FACTOR
2.5
This setting determines the number of decimals for the K-factor
(SETUP 2.4). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Note:
SETUP 2.5 influences the flowrate K-factor setting only.
This setting has NO influence on the displayed number of
decimals for "Flowrate" (SETUP 2.3)!
CALCULATION
2.6
The flowrate is calculated by measuring the time between a number of
pulses, for example 10 pulses. The more pulses the more accurate the
flowrate will be. The maximum value is 255 pulses.
Note:
this setting does influence the update time for the analog output
directly (maximum update 10 times a second). If the output response is
too slow, decrease the number of pulses.
Note:
the lower the number of pulses, the higher the power consumption
of the unit will be (important for battery powered applications).
Note:
for low frequency applications (below 10Hz): do not program more
than 10 pulses else the update time will be very slow.
Note:
for high frequency application (above 1kHz) do program a value of
50 or more pulses.
