MSA Senscient ELDS 1000 series, Operating Manual

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Problem Solving
Senscient ELDS™
Rev 15 131
GB
Event Title Event Description, Properties and Parameters
Recover Ultra Low Signal The ELDS signal reaching the Receiver has increased and a recovery
from ultra-low signal conditions has been diagnosed at this time.
Temperature Over The ambient operating temperature has exceeded the maximum
specified operating temperature at this time. (Check for localised
sources of excessive heat.)
Recovering from LL Cond The ELDS unit has recovered from conditions that led to the diagnosis
of the Low Light.
Into LL Condition The ELDS unit has diagnosed and entered the Low Light condition.
Recovering from LL State The ELDS unit has recovered from the conditions that led to the
diagnosis of the Low Light state.
Into LL State The ELDS unit has diagnosed and entered the Low Light state.
Config Settings Error An error has been detected in the configuration settings of the unit.
(Error correction procedures will be executed automatically to attempt
to identify and correct the configuration.)
Config CRC Error The CRC of the configuration settings has been calculated and there
appears to be an error. (Error correction procedures will be executed
automatically to attempt to identify and correct the configuration.)
Time Update (initial time) The time of the Real Time Clock (RTC) has been updated.
Time Update (new time) The time stored in the Real Time Clock (RTC) has been updated.
User Configuration
Update
The user has updated the configuration settings of the system at this
time.
System Installed The ELDS system was successfully installed and commissioned at this
time.
Watchdog Restart A watchdog restart was executed at this time.
Settings Initialised The settings of this ELDS unit were initialised at this time.
SimuGas Manual Start The Transmitter was commanded to execute a SimuGas Live test
which started at this time.
SimuGas Manual Stop The Transmitter completed a SimuGas Live test at this time.
CH
4
SimuGas High BG A SimuGas Auto test was performed recently with a high background
of methane in the beam-path. The high methane background was
therefore used to confirm the correct functionality of the ELDS gas
detector at this time.
Unit Type Update The unit type was updated at this time.
Negative Gas Fault Starts A Negative Gas Fault was diagnosed and declared at this time.
(Check that unit has good zero, re-zeroing in known, target-gas-free
conditions if believed necessary.)
Negative Gas Fault Ends A previously diagnosed Negative Gas Fault was cleared or ended at
this time.
Ultra-Low Signal The ELDS signal reaching the Receiver fell to an ultra-low level at this
time. (Check for obstruction of beam-path, dirty optics and mis-
alignment.)
Invalid Date/Time The date or time stamp of this event log entry is invalid or corrupted.
SimuGas Pass - High
Background
A SimuGas Auto test was performed recently with a high background
of target gas in the beam-path. The high target gas background was
used to confirm the correct functionality of the ELDS gas detector at
this time.
Power On Produced whenever an ELDS unit powers up or re-starts.