Fluidwell F110-A, Руководство по эксплуатации, Страница: 17 / 48

HF110AEN_v0501_04
Page 17
5 - FLOWMETER (CONTINUED)
CUT-OFF
53 To ignore e.g. leakage of the flow or vibration, a low-flow cut-off can be
set as percentage over the full range of 16mA (or 20mA / 10V). When the
analog value is less than required with this setting, the signal will be
ignored. The cut-off value can be programmed is the range 0.0 - 99.9%.
Examples:
F
UNCTION
(
SETUP
51)
S
PAN
(
SETUP
13/24)
R
EQUIRED
CUT
-
OFF
C
UT
-
OFF
(
SETUP
53)
R
EQUIRED OUTPUT
interpolation 450 L/min 25 L/min 25/450 x 100%=5.5% 16mA x 5.5% + 4mA = 4.88mA
square root 450 L/min 25 L/min (25/450)
2
x 100%=0.3% 16mA x 0.3% + 4mA = 4.05mA
TUNE MIN / 4MA
54
With this setting it is possible to calibrate the input value for (0)4mA as the
signal from the flowmeter might not be exact 4.0 mA (or 0.0 mA) at
flowrate zero.
This function will measure the real output value at flow zero.

Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
After pressing PROG, three settings can be selected:
 CALIBRATE: with this setting, the input will be calibrated with the
actual "(0)4mA" value. After pressing enter, CAL SET will be
displayed as soon as the calibration is completed. From that moment,
the analog value must be more than the calibrated value before the
signal will be processed.
 DEFAULT: with this setting, the manufactures value is re-installed.
 CAL SET: to select the last calibrated value.
TUNE MAX / 20MA
55 With this setting it is possible to calibrate the input value for 20mA as the
signal from the flowmeter might not be exact 20.0 mA at maximum
flowrate.
This function will measure the real output value at maximum flowrate.

Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
After pressing PROG, three settings can be selected:
 CALIBRATE: with this setting, the input will be calibrated with the
actual "20mA" value. After pressing enter, CAL SET will be displayed
as soon as the calibration is completed. From that moment, the
analog value must be less than the calibrated value for a reliable
measurement.
 DEFAULT: with this setting, the manufactures value is re-installed.
 CAL SET: to select the last calibrated value.