KROHNE VFM 1091 - Manual (Page 19)

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Fct 1.3.3 P. WIDTH.LIM pulse width
You can limit the duration of active pulse width of the Pulse output. You
can choose -
• YES • NO
YES limits the pulse width to 250 mSec
NO keeps the Pulse output at 50% duty cycle.
This function helps to minimize the overheating of
totalizer coils.
Fct. 2.0 TEST
This second main menu level groups test functions for display, current
output and Pulse output. There are no sub-menus under 2.0. Since these
are test functions, when executed they have an immediate effect on the
signal converter for the duration the test function is executed. When
using all the other menu functions, the changes made are stored
temporarily and have no effect on the operation of signal converter
unless you quit menu.
Fct. 2.1 TESTDISP. display test
All segments of the display are flashed together. You can press key
at any time to terminate display test.
Fct. 2.2 TEST I current ouput test
Caution: during this test current output will change to set test values so
you should take appropriate action depending on your current output
application
Place current meter in series with current loop. Then enter integer value
of current output desired.
Entering a value will cause that current to flow so that you can check it
with a meter. Select CONT YES to test other current value or CONT NO
to end. When you exit the menu, normal current value depending on flow
rate and programming of current output functions will be restored.
LIMITS - 4 to 20 mA.
HART: GOM 1,2,2
Fac. 2.3 TEST P Pulse output test
Caution: during this test frequency output will change to set test values
so you should take appropriate action depending on your pulse output
application
Connect voltmeter to pulse output. With supply & load connected
select –
• Pulse OFF • Pulse ON
Selecting Pulse ON/OFF will cause the output to change accordingly so
that you can check it on the meter. Select CONT. YES to test further or
CONT. NO to end. When you exit the menu normal pulse output
depending on flow rate and programming of pulse output functions will
be restored.
Fct. 3.0 INSTALL
This is a main menu level whose submenus and their functions
cover all installation-related functions which include:
- Primary data (nominal diameter, k-factor).
- User data (password, totaliser setting etc.)
- Application data (medium, density operating and normal and
amplifier gain)
Fct. 3.1.0 BASIS. PARAM
This submenu functions allow user to enter the vortex
primary sensor data viz. nominal diameter and k- factor
Fct. 3.1.1 NOMINAL.DIA nominal diameter
Select from the options which DIN/ANSI size primary is used with
the instrument. Options to choose from are –
• DN 10s • DN 10 • DN 15 • DN 20
• DN 25 • DN 40 • DN 50 • DN 80
• DN 100 • DN 150 • DN 200 • ANSI 3/8"s
• ANSI 3/8" • ANSI 1/2" • ANSI 3/4" • ANSI 1"
• ANSI 1.5" • ANSI 2" • ANSI 3" • ANSI 4"
• ANSI 6" • ANSI 8"
Fct. 3.1.2 K-FACTOR k-factor of the primary
Enter the primary constant k-factor value. This value is stamped on
the instrument label and in units of pulses/m3
LIMITS – Limits depend on nominal- dia
NOM.DIA LOW LIM HIGH LIM
DN 10S/ANSI 3/8"S 1370000 1530000
DN 10/ANSI 3/8" 490000 543000
DN 15/ANSI 1/2" 290000 330000
DN 20/ANSI 3/4" 107000 120000
DN 25/ANSI 1" 42000 66000
DN 40/ANSI 1.5" 12300 18700
DN 50/ANSI 2" 6065 8800
DN 80/ANSI 3" 1740 2730
DN 100/ANSI 4" 775 1200
DN 150/ANSI 6" 240 350
DN 200/ANSI 8" 104 163
Fct. 3.2.0 USER DATA
This is submenu level. 3.2.x functions allow enabling of password
code 1, enabling and resetting of built-in electronic totalizer.
Fct. 3.2.1 ENTRY.CODE.1 enable code 1 password
Select YES if password should be checked to access the menu. Use
password to prevent configuration changes by an unauthorized
person. Answering NO means password is not required to enter
menu.
Fct. 3.2.2 TOT. RESET totalizer reset
This function on can be used to reset the totalizer (to zero) Two
options are presented
• YES • NO
To reset totalizer - Select YES
To keep totalizer value unchanged – Select NO.