Kurz
B
‐
Series
Operations
Guide
4–43
Program Mode
Advanced Setup
Option 17 — Configured for Multiple Gases
Option
17
has
dual
‐
purpose
functionality
that
is
configured
per
user
specifications.
The
two
functionalities
are
mutually
exclusive,
and
the
specified
functionality
cannot
be
changed.
Important
This
section
contains
Information
for
selecting
from
the
available
list
of
multiple
gas
calibration
curves.
Information
for
configuring
a
shifting
gas
composition
starts
with
on
An
optional
feature
available
with
Kurz
flow
meters
is
the
ability
to
adjust
for
shifting
gas
(also
referred
to
as
“binary
gas”)
compositions
or
to
select
a
different
predefined
gas
calibration.
•
A
shifting
gas
composition
is
a
gas
mix
with
only
the
percentages
of
the
gases
within
the
mix
changing
based
on
the
key
gas
within
the
mix.
•
Multiple
gas
calibrations
support
up
to
five
unique
gases
or
gas
mixes.
Important
Two
different
sets
of
parameters
appear
depending
on
Option
17
being
configured
for
the
shifting
gas
feature
or
the
multiple
gas
feature.
Make
sure
you
are
referring
to
the
correct
set
of
feature
parameters
for
Option
17.
Multiple Gas Calibrations
Multiple
gas
calibrations
are
useful
in
applications
that
run
a
primary
gas,
but
require
another
gas
for
a
line
purge
function,
or
when
the
flow
meter
needs
to
be
used
in
different
process
gas
lines.
The
flow
meter
can
contain
up
to
five
predefined
calibration
curves.
The
flow
meter
can
switch
to
another
gas
calibration
curve
using
manual
entry
or
automatically
using
the
4
‐
20
mA
input
signal.
The
flow
meter
uses
the
4
‐
20
mA
ranges
shown
in
the
following
table
to
select
between
the
predefined
calibration
curves.
The
gas
calibration
can
be
changed
two
ways:
•
Manually
by
selecting
a
predefined
alternate
gas
calibration.
•
Automatically
changing
the
gas
calibration
through
the
4
‐
20
mA
external
input
signal
read
by
the
flow
meter.
Table 4
‐
5.
4
‐
20
mA
Ranges
for
Predefined
Calibration
Curves
Curve
Number
4
‐
20
mA
Input
Curve
1
<
6.0
mA
Curve
2
7
mA
to
9
mA
Curve
3
10
mA
to
12
mA
Curve
4
13
mA
to
15
mA
Curve
5
>
16
mA
Содержание 410FTB
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