Det-Tronics ATX10 Transmitter User Manual

Page 9

2.5

95-8657

PROFILE MODE
The Profile Mode of operation includes user adjustments

for Pre-Alarm setting, and allows the use of either a

level alarm threshold, or a dynamic alarm profile using

the patented Learn Function. The Learn Function

optimizes both detector sensitivity and discrimination by

recording background environmental acoustic Sound

Pressure Level (SPL) across a wide frequency range.

The resulting ‘profile’ of the background SPL provides

a unique acoustic fingerprint of that environment and

is used as a dynamic alarm threshold. This feature of

Profile mode allows the detector to ignore nuisance

background sources without significantly impacting

sensitivity or having to reposition the detector.

An important advantage is that the FlexSonic Acoustic

Detector is immediately operational out-of-the-box

while simultaneously performing an on-site sound

survey with the Learn Function.

Table 2 details the user adjustments in Profile Mode.

DATA STORAGE / MANAGEMENT

Flash Memory
The ATX10 has onboard flash memory that is used

as the primary location for storage of safety critical

parameters. The ATX10 flash memory contains the

following data files:

Configuration Data

– The Configuration data includes

all the settings that define the mode of operation of the

ATX10.

Saved Profiles

– In the Profile Mode of operation,

the option to use the Learn Function is available. Up

to 10 different acoustic profiles generated by the learn

function can be saved to flash for use as the alarm

threshold.

Event Logs

– Specific alarms, faults, and configuration

change events are logged with a time stamp to the

onboard flash in the ATX10.

SD Memory Module
The ATX10 Memory Module is a removable storage

feature implementing an extended temperature range

micro SD card. The Memory Module provides storage

capability for over 6 months of real time acoustic

data as well as backup storage for the safety critical

parameters maintained in onboard flash. The ATX10

Memory Module’s SD card is formatted as a standard

FAT file system (typically FAT32), which allows the disk

to be read by most PCs. The ATX10 Memory Module

contains of the following data files:

Real Time Log

– Acoustic spectral data and device

status information are written to log files at a 1 second

interval. When the Memory Module has reached capacity

of real time log information, it will overwrite the older files.

Configuration Data Copy

– When properly configured,

the ATX10 will write a synchronized copy of the

configuration data file from onboard flash to the Memory

Module.

Copy of Saved Profiles

– As with the Configuration

data, the ATX10 will write a synchronized copy of the

profile data to the SD Memory Module.

SD Memory Module Operation
At several times in the operation of the ATX10, a Memory

Module Initialization will occur. This involves checking

the presence and integrity of the Configuration and

Profile files on the SD card.

The SD Card must meet the capacity and environmental

ratings as specified by Det-tronics. The backup storage

of data on the Memory Module also enables rapid

configuration of replacement units, as well as SD card

interchange via write protected HART commands:

UPLOAD

– This command will leave the ATX10 flash

memory unchanged, but synchronize the data by

replacing the configuration and profile data files on

the SD Memory Module. In other words, the data is

uploaded from the ATX10 onboard flash to the SD

Memory Module.

Profile Type

learn or level

Parameter

Level (dB)

Delay

Sec)

Recover

(Sec)

Pre-Alarm

Level

Sensitivity

(dB)

Band Count

Range

40 - 120

0 - 30

yes / no

0 - 99 db

0 - 20

1 - 24

Increment

n/A

1 db

Default

6 db

Table 2—profile mode Alarm Settings

This manual is related to the following products:

AC100 Sensor FlexSonic Acoustic Detector