E119-P
Page 26 FW_E119-P_M_v0301-02_EN
1 TOTAL
1.8 PREVIOUS DAY
TOTAL
Shows the amount/volume of totalized product between the last contract
hour and the contract hour before that. This totalizer cannot be reset to
zero.
See Section 4.4.3: Current day total and Previous day total[»16] for
information on reviewing more historical day totals.
5.5.2 MENU 2: FLOWRATE
First set up the flowmeter in
4: FLOWMETER as this directly affects the settings/measurement
units in this menu (Flowrate).
If the type of flowmeter unit is changed in
4.2: FLOWMETER > UNITS or 4.3: FLOWMETER > UNIT, the
units in 2.1: FLOWRATE > UNIT will change to the default setting of the selected flowmeter.
If the settings in
2.1: FLOWRATE > UNIT, 2.2: FLOWRATE > TIME, or 2.3: FLOWRATE > DECIMALS are
changed, this will directly affect the analog output settings in 7.2: ANALOG OUTPUT > RATE MIN (4MA),
7.3: ANALOG OUTPUT > RATE MAX (20MA), and the displayed bargraph in 3.6: DISPLAY > RATESPAN.
Therefore, you should first determine the required settings for the flowrate.
2 FLOWRATE
2.1 UNIT
Determines the measurement unit for the flowrate. The type of unit that can
be selected depends on the flowmeter unit (volumetric or mass) selected in
4.2: FLOWMETER > UNITS.
The following can be selected:
AUTO-VOL: mL - L - m3 - US GAL - I GAL - cf - Oil bbl - nL - nm3 - scf
AUTO-MAS: mg - g - kg - ton - lb - US ton
Hand: mL - L - m3 - US GAL - I GAL - cf - Oil bbl - nL - nm3 - scf - mg - g -
kg - ton - lb - US ton - rev - P - (no unit)
2.2 TIME
Determines the time interval (sec, min, hour or day) for calculating the
flowrate.
2.3 DECIMALS
Determines the number of decimals for the flowrate.
2.4 K-FACTOR
This value is used to convert the flowmeter pulse signals to a flowrate unit.
The K-factor is based on the number of pulses generated by the flowmeter
per measurement unit selected in 2.1: FLOWRATE > UNIT.
The more accurate the K-factor, the more accurate the system.
This setting can only be changed if the automatic unit conversion in
4.2: FLOWMETER > UNITS is set to Hand. Otherwise, K-factor conversion will be
Auto.
After pressing PROG, the decimal point will start to flash. The decimal
position can then be changed by pressing the SELECT-key, then press the
CLEAR key to set the digits.
2.5 CALCULATION
The flowrate is calculated by measuring the time between a number of
pulses, for example 10 pulses. The more pulses measured, the more
accurate the flowrate.
● This setting directly influences the update time for the analog output
(maximum update 8 times a second). If the output response is too slow,
decrease the number of pulses.
● The lower the number of pulses, the higher the power consumption of
the unit will be (important for battery powered applications).
● For low frequency applications (below 10 Hz), do not program more than
10 pulses, otherwise the update time will be very slow. For
high‑frequency applications (above 1 kHz), enter a value of 50 pulses or
more.
● Keep in mind that values higher than 200 in combination with low
frequencies will result in slow updates of the indicated flowrate and
analog output.
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