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3.1
TRI-COLOR LED
An onboard tri-color LED is provided for indicating
faults, alarms, and calibration status. See Table 1. LED
operation for fault status is non-latching. LED operation
for alarms is configurable for latching/non-latching.
WEATHER BAFFLE ASSEMBLY
The black weather baffle is provided to prevent debris
and water from entering the optics, while allowing gas to
enter readily. An O-ring is provided on the main Eclipse
body to ensure a proper seal with the weather baffle.
The weather baffle version with hydrophobic filter is for
most outdoor and indoor applications, especially wet
and/or dirty applications. When compared to the weather
baffle version without the hydrophobic filter, it provides
optimum protection against airborne water and dirt, with
minimal reduction in speed of gas alarm response.
The weather baffle assembly is not field-serviceable,
but is easily replaceable. To remove the plastic weather
baffle from the Eclipse body, rotate it one quarter turn
counter-clockwise and pull.
The weather baffle is furnished with a calibration gas
nozzle for direct injection of gas to the sensor, allowing
the operator to apply gas to the detector without going
through the weather baffle.
NOTE
Always cover the calibration gas nozzle with the
cap during normal operation, and ensure that the
cap is not damaged.
CLOCK
An hour meter is provided to give a relative indication of
time for historical logs. The meter is zeroed at the time of
manufacture and only increments while power is applied.
HART or MODBUS communication is required to view the
running hours.
HISTORY LOGS
All history logs are saved in non-volatile memory and
retained through power cycles. HART or MODBUS
communication is required to view the history logs.
Event Log (Alarms and Faults)
An event log saves the ten most recent alarms and a
selected group of faults with an hour meter time stamp.
HART or MODBUS communication is required to view the
log. Types of logged events include:
• Low Alarms
• High Alarms
• Optics Fault
• Warm-up
• Calibration Fault
Calibration Log
A log of the ten most recent calibrations with time stamp
is saved. HART or MODBUS communication is required
to view the log. Types of calibration records include:
• Zero Only Calibration
• Complete Calibration
• Failed Calibration
Min/Max Temperature History
Ambient minimum and maximum exposed temperature
measurements are stored in non-volatile memory, and are
accessible via HART or MODBUS communication. The
measurements are time tagged with respect to total hours
of powered operation. The temperature log may be reset,
in which case all min/max exposed temperature logs are
cleared.
Table 1—LED Status Indication
LED
Device Status
Green
Normal operation.
Red
Blinking indicates Low Alarm.
On steady indicates High Alarm.
Yellow
Fault condition or warmup.
