Fluidwell F014-P, Руководство пользователя

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Page 12
FW-F014-P-M_v0402_05_EN.docx
3.2.4 EXPLANATION OF SETUP-MENU 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.
SETUP FUNCTIONS AND VARIABLES
2 FLOWRATE
21 UNIT
SETUP - 21 determines the measurement unit for flowrate.
The following units can be selected:
mL - L - m3 - mg - g - kg - ton - GAL - bbl - lb - cf - REV - ---- (no unit)
- scf - Nm3 - NL - P.
Alteration of the measurement unit will have consequences for
operator and SETUP-level values.
Please note that the K-factor has to be adapted as well; the
calculation is not done automatically.
22 TIME UNIT
The flowrate can be calculated per second (SEC), minute (MIN), hour
(HR) or day (DAY).
23 DECIMALS
This setting determines for flowrate the number of digits following the
decimal point.
The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
24 K-FACTOR
With the K-factor, the flowmeter pulse signals are converted to a
flowrate.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 21), for example
per liter. The more accurate the K-factor, the more accurate the
functioning of the system will be. For examples read SETUP 13.
25 DECIMALS K-FACTOR
This setting determines the number of decimals for the K-factor
(SETUP 24).
The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the K-factor
indirectly.
This setting has NO influence on the displayed number of digits for
"flowrate" (SETUP 23)!
26 CALCULATION
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.
•
the lower the number of pulses, the higher the power consumption
of the F014-P will be (important for battery powered applications).
•
for low frequency applications (below 10Hz): do not program more
than 10 pulses else the update time will be very slow.
•
for high frequency application (above 1kHz) do program a value of
100 or more pulses.
27 CUT-OFF
With this setting, you determine a minimum flow requirement thresh-
hold, if during this time less than XXX-pulses (SETUP 26) are
generated, the flowrate will be displayed as zero.
The cut-off time has to be entered in seconds - maximum time is 999
seconds (about 15 minutes).