Audible Alarm
Programming Setup and UI Navigation for RLDS - Display Screens • 35
MANUAL
- Latching (Alarm relay remains
energized, and will not release until the alarm
condition has been manually acknowledged). Refer to
Section 7.6.4., Acknowledging Alarms
3. Press
ENTER
to accept the new entry or
ESC
to revert to the previous setting.
6.8. Audible Alarm
This parameter selects the function of the RLDS
monitor’s internal audible alarm device.
1. Press the
ENTER
key to adjust the setting.
2. Use the UP/DOWN cursor keys to select
unused
,
monitor on
,
evacuate
,
spill
,
leak
,
fault
, or
alarm
.
3. Press
ENTER
to accept the new entry or select
ESC
to revert to the previous setting.
6.9. Zone Hold
Zone hold sets the length of time a zone will be
monitored when the zone hold feature is activated.
The default is 15 minutes. The range is 1 to 999
minutes.
1. Press the
ENTER
key to adjust this setting.
2. Use the LEFT/RIGHT cursor keys to move
across the entry field and the UP/DOWN
cursor keys to modify the individual members.
3. Press
ENTER
to accept the new entry or
ESC
to revert to the previous setting.
6.10.Detection Limit
The Detention Limit is essentially a squelch setting
that instructs the instrument to interpret PPM readings
below the designated level as 0. The range is 1 to 99
PPM.
1. Press the
ENTER
key to adjust the setting.
2. Use the UP/DOWN cursor keys to modify the
setting.
3. Press
ENTER
to accept the new entry or select
ESC
to revert to the previous setting.
6.11.Loop Mode
Loop Mode sets the loop mode of the two optional
4-20 mA outputs. Options are:
•
track zones mode (default)
•
highest PPM concentration mode
In track zones mode the RLDS adjusts the ZONE and
PPM outputs to correspond to the latest sampled zone
number and its corresponding PPM concentration,
respectively. For example, if the RLDS samples zone
#9 at 63 PPM, the ZONE and PPM outputs would
read 13 mA (corresponds to zone #9) and 5 mA
(corresponds to 63 PPM), respectively, until the next
zone is sampled. This continues in a cyclic fashion
through each zone. Note that this example assumes
LOOP2 Factor was left at its default value (0.016).
This can be adjusted through the
LOOP2 FACTOR
option in the
System Setup
screen
.
In
highest concentration (PPM)
mode the RLDS
adjusts the two current outputs to correspond to the
zone number that has the highest PPM concentration
and the corresponding value of that concentration,
respectively. Unlike
track zones mode
, this mode will
adjust the two outputs to correspond to whichever
zone has the highest PPM concentration. For
example, if zone #9 is sampled at 125 PPM, the two
4-20 mA outputs will read 13 mA and 6 mA,
respectively, as long as it continues to sample at 125
PPM or until a different zone samples a concentration
greater than 125 PPM.
6.12. Loop2 Factor
Loop2 Factor sets the PPM scale factor for current
loop number 2. To calculate the current output,
multiply the scale factor by the PPM and add four (4).
For example, at the default scale factor of 0.016, a
measurement of 100 PPM would generate a current
output of 5.6 mAdc. The current output cannot exceed
the 20 mAdc capacity of the interface.
NOTE: In “Monitor On” mode, the unit
will only give audible alarms on a critical
fault that stops the unit from monitoring.
NOTE: Both LOOP MODE (for selecting
track zones or highest PPM mode) as well
as the LOOP2 FACTOR (for scaling the
PPM output) are configured from the
SETUP menu. Configure one, then press ENTER to
access the other.
Содержание GW-810-3760
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