37
large levels are expected. Set this flag
lower if large levels are expected.
TWA Alarm Flag:
Press the “ENT” key to
move the cursor to the TWA ALARM flag.
This
flag
is
reserved
for
future
implementation of TWA measurement.
This flag should be left at the factory default
of 0.
Full Scale Flag:
Press the “ENT” key to
move the cursor to the FULL SCALE flag.
This flag is used to adjust the full scale
measurement for the analog output. The
factory default is 1000, meaning that the 0-
10 volt analog output corresponds to 0-
1000 ppm. This flag should be left at the
factory
default
unless
a
custom
measurement range has been implemented
in the monitor. Consult factory technical
support for further information if needed.
TWA Refresh Flag:
Press the “ENT” key
to move the cursor to the TWA refresh flag.
This flag is used to save peak ppm
measurements
if
Trending
is
not
implemented. A TWA refresh rate of 5
corresponds to a theoretical ten-hour time
weighted average. As with the TWA
ALARM flag, this feature is not yet
implemented.
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 third system flag screen.
Delay Flags:
The DELAY FLAGS are used
to implement an additional time delay, in
minutes before energizing the respective
alarm relays. This time delay is similar to
the LEAK WAIT, except that the user is
able to create a time definite delay, rather
than the ppm level defined LEAK WAIT
delay. The factory default setting is 0 for
each delay.
Latch Flag:
Press the “ENT” key to move
the cursor to the next entry. Once the
DELAY entries have been viewed, press
the “ENT” key to move the cursor to the
LATCH FLAG. The LATCH FLAG is used
to determine if the LOW and MAIN alarms
are self-resetting or are latched. If the
LATCH FLAG is set to 0, the alarms will
function as a conventional latching alarm. If
the LATCH Flag is set to 1, the LOW and
MAIN alarms will function as self-resetting
alarms. The HIGH alarm will always be a
latching alarm.
NOTE: The ASHRAE-15 standard specifies
that an alarm relay must be latched, but
that if more than one alarm level is
provided, the additional alarms may be self-
resetting. Care must be used when
implementing this feature, as the alarm
level that corresponds to the ASHRAE-15
required alarm MUST be a latching alarm.
If there are any questions regarding the
correct implementation of this feature, call
SenTech technical support.
Press the “ENT” key to move the cursor to
the next entry. When all entries have been
viewed, press the “ENT” key again to return
to the previous menu. The monitor should
again display the system setup menu.
Alarm Test:
The Alarm Test screen is
used to enable the installer to verify that the
monitor is correctly integrated into the
building systems.
LOW DELAY 0 -
MAIN DELAY 0
HIGH DELAY 0
LATCH FLAG 0
Содержание IR-SNIF-MC-1
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