36
System Flags
Press the “2” to enter the System Flags
screens. The system flag screen will
display
information
for
five
settings,
displayed on two screens. Press the ENT
key to move the cursor from one line to the
next, and press the left arrow key to move
from one line to the previous.
Autozero Flag:
The autozero flag can be
used to limit the frequency of autozero
cycles. It can be set between 0 and 100. If
a 0 is entered, the monitor will enter an
autozero cycle after every area is sampled
(this is the normal default configuration).
Increasing this number will allow the
monitor to skip the autozero cycle if the raw
measurement from the IR-Bench has not
changed significantly. That is, if the raw
signal varies by less than plus or minus 10
millivolts, and the autozero flag is set to 10,
the monitor will not perform an autozero
cycle.
NOTE: This is effectively reducing
the extreme low-level sensitivity of the
monitor.
If this feature is desired, set this
flag by increasing it in small steps, 1 or 2
digits at a time, until the monitor stops
autozeroing after every zone.
Password Flag:
The password flag can be
set to either 0 or 1. If a 1 is entered, the
monitor will require the user to enter a
password to perform any functions of the
monitor. This feature is useful if the monitor
is installed in a public area, and controlled
access to the monitor is needed. This flag
is set to 0 by default.
Horn Relay Flag:
Press the “ENT” to
move the cursor to the horn relay flag. The
horn relay flag can be set to 0, 1, 2 or 3.
This flag changes the function of the horn
relay to control an audible alarm. With the
flag set to the 0, the horn relay will be
disabled. The monitor can be programmed
to allow the horn relay to be de-energized
while the monitor is still in alarm. This
feature is useful when the user is
troubleshooting an alarm, and wants to
work in silence. Set the horn relay flag to 1
to activate the horn relay when the monitor
is in LOW alarm. Set the horn relay flag to
2 to activate the horn relay when the
monitor is in MAIN alarm. Set the horn
relay flag to 3 to activate the horn relay
when the monitor is in HIGH alarm. This
flag is set to 2 by default.
Unit Number Flag:
The unit number flag is
used to identify the monitor on a RS-485
network, if that option has been purchased.
This flag is set to 1 by default.
Press the “ENT” key to move the cursor to
the next entry. When all entries have been
viewed, press the “ENT” key again to
display the second system flag screen
Slope Flag:
The slope flag is used for
circumstances where an individual zone
might be exposed to large levels of
refrigerant. This flag will hold the monitor in
its current mode, whether it be autosample
or autozero, if the raw measurement has
not leveled off to a constant measurement.
For instance, after an extremely large level
of refrigerant has been measured, the
monitor might run in autozero longer than
expected if the measured level is still falling.
Set this flag to the factory default of 50 if no
AUTOZERO FLAG 0 -
PASSWORD FLAG 0
HORN RELAY FLAG 0
UNIT NUMBER FLAG 1
SLOPE FLAG 50 -
TWA ALARM 0
FULL SCALE 1000
TWA REFRESH 5
Summary of Contents for IR-SNIF-MC-1
Page 54: ...05 21 2008 ...
