Det-Tronics ATX10 Transmitter - Manual (Page 8)

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Event Logging
The ATX10 Transmitter generates an event log and
saves the data to onboard flash memory where it can
be retrieved via the HART interface. The following
events are recorded to the ATX10 event log:
• Alarm
• Clear Alarm
• Pre-Alarm
• Clear Pre-Alarm
• Fault (sensor/transmitter)
• Clear Fault
• Automatic AIC Fail
• Power Up
• Configuration Change
• Memory Card Status Change (new, removed)
• Manual AIC
Removable Memory
In addition to flash memory, the ATX10 includes a
removable micro-SDHC memory card that stores both
the event logs and recorded acoustic spectral data.
The removable storage feature allows recorded spectral
data files to be easily transferred from the detector and
analyzed via specialized software.
The number of events and the duration of recorded
acoustic data is limited only by the capacity of the
memory card. The 4 GB memory card can store over
6 months of ambient acoustic input before overwriting
old data.
The micro SD card can be accessed by removing the
ATX10 Transmitter cover and unplugging the transmitter
module from the mounting bracket.
Warning
Power must be removed from the device prior to
removing the cover in a hazardous location.
Communication (HART)
The ATX10 implements the HART 7.0 standard. Refer
to Appendix F for complete information regarding HART
communication.
OperatiOn
The FlexSonic Acoustic Detector has two different
modes of operation — Basic and Profile.
BASIC MODE
The Basic Mode setting of the FlexSonic Acoustic
Detector provides an adjustable, flat level alarm
threshold when the background acoustic environment
is largely unknown. The alarm threshold can be
adjusted from 40 dB to 100 dB in 1 dB increments.
The alarm delay and recovery times are also user
adjustable in Basic Mode. See Table 1 below for
adjustment ranges and default settings for the Basic
Mode alarm.
Parameter
Level
(dB)
Delay
(Sec)
Recover
(Sec)
Range 40 - 120 0 - 30 0 - 30
Increment 1 1 1
Default 59 5 1
Table 1—basic mode Alarm Settings
An Autolevel function is also included in Basic Mode
(not available in Profile mode). This function operates
as a quick (10 second) intrinsic sound survey, analyzing
the background acoustics and setting an alarm
threshold level that is optimized to the background
acoustic content present. It is important to note that
any potential noise sources not present during the
Autolevel analysis will not be accounted for in the
alarm threshold setting and reduce the discrimination
capability of the detector. For newly added, intermittent,
or highly varying sources of background noise, it is
recommended that the Learn Function in Profile Mode
be used to optimize discrimination capability of the
FlexSonic Acoustic Detector.