Beacon 410 Gas Monitor Operator’s Manual Viewing and Changing Channel Parameters • 41
Relay-X Assignment
(ALARM-3)
* Relay-X will be either
Relay-A for channel 1,
Relay-B for channel 2,
Relay-C for channel 3, or
Relay-D for channel 4.
The alarm condition that activates relay X. It can be set for
activation by the following alarm conditions:
• ALARM-1
• ALARM-2
• ALARM-3
• ALARMS 1 or 2
• ALARMS 1 or 3
• ALARMS 2 or 3
• ALARMS 1, 2, or 3
• Use As Channel FAIL (If you choose this setting, the relay is
normally energized)
* This parameter appears only if the RELAYS ABCD used as
parameter in the Global Menu is set to CHANNEL ALARM
RELAYS.
NOISE FILTER
(5 seconds)
The noise filter feature helps “smooth out” jumpy or noisy signals
from the detector head. The filter setting indicates the number of
seconds over which the displayed reading is being averaged. You
can set the noise filter from1 second to 10 seconds.
A setting of 10 seconds produces the greatest amount of
smoothing, but causes the displayed gas reading to respond more
slowly to changes in gas concentrations.
A setting of 1 second gives the fastest gas reading response to a
change in gas concentration, but gives the least amount of
smoothing.
Deadband
(0.5% oxygen for oxygen
channels; 2.0% of Full Scale in
terms of the channel’s units for
all other channel types.)
The deadband setting defines the first gas concentration that will
be displayed when the gas reading increases or decreases from
the normal fresh air concentration (20.9 for oxygen and 0 for all
other channel types). This feature helps prevent “jumpy” readings
near the normal fresh air reading.
For example, if the zero suppression setting is 2 %LEL for a
combustible channel whose range is 0 - 100% LEL, the Beacon
410 will display a reading of 0 %LEL for gas readings from
-1 %LEL to 1 %LEL.
Table 7: Configuration Menu Parameters (Continued)
Channel Parameter
(Factory-Set Value)
Description
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