Omni2 Door Warning Sign
  One/Two Channel Alarm
Connects to Multiple Sensing Instruments
IEC61508 SIL2 Safety Rating
Built in Battery Backup
Fully Redundant Dual Alarm Logic
Bright Solid LED Display
Audible Alert (Internal and External)
Reset/Test/Mute Key Switch
Repeat Outputs
Ingress Protection to IP54 - vented for backup battery safety
The Omni2 Door Warning Sign is a compact wall mounted visual alarm indicator designed for the Nuclear Industry for radiation and airborne contaminant hazard warning with IEC61508 SIL 2 Safety Rating. IP54 Venting ensures safety with VRLA battery backup
Overview
The Omni2 alarm annunciator is a compact wall mounted visual alarm indicator designed for radiation and airborne contaminant hazard warning. The Omni2 is used to safeguard against personnel inadvertently entering plant areas where abnormal radiological conditions are present.
Typical Application
Position the Omni2 on the wall adjacent to the entrance to an environmentally segregated area. Connect the Omni2 to the area monitors, and if airborne contamination or high radiation conditions are present in the area, a large bright flashing visual warning of the nature of the hazard is displayed, to deter entry to the area.
High Reliability Design
The Omni2 features full dual redundant design for each of the two alarms, solid state logic and visual display, providing a highly reliable alarm system, meeting or exceeding the functional safety requirements of these critical applications.
The Omni2 is designed to meet the requirements of SIL2 safety systems as defined in IEC61508.
Operation
Once an alarm has occurred, the visual display will continue to flash, and the audible alert will continue to sound until reset by the key-switch OR by the Remote Reset. The alarm cannot be reset if the alarm condition is still present. The internal audible will give a warning of a dangerous condition, even if the display is out of sight of the personnel.
Testability
The Omni2 provides features to allow easy routine testing of the alarm system. A green indicator light on the front of the unit provides indication that the unit is healthy. If a fault is detected in either of the dual redundant alarms, this indicator will extinguish, and the instrument failure output will activate warning of the failure. In addition, the Reset key-switch AND the Remote Reset can be used to test the alarm display. If the reset key-switch OR the Remote Reset is activated while no alarm is present, the alarm displays will illuminate.
Installation
The Omni2 is housed in an aesthetic low profile wall mount enclosure that has an IP54 protection rating (according to EN 60529) and provides battery venting.
Options for mechanical mounting include internal mounting holes or external mounting brackets (supplied). Wiring entry is provided through the bottom of the unit via up to five 20mm glands.
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