Specifications

Autronica Fire and Security AS Autronica Fire and Security AS
6564
PRODUCTS 2014
Omicron systems
Water ingress system – OAS WI
High pressure air
Tube/pipe
ushing
Vacuum pump
Flow fault
Gas alarm
Ventilation pipe
Gas detection in harsh areas such as shale shaker
rooms etc.
Omicron direct gas sampling system OGS 2.1 sampling is specially
made for “direct detection” of harsh areas.
Principle
The direct gas sampling system consists of two cabinets; one
detector cabinet approved for mounting in a Zone 1 area, and
one electronic cabinet with power supply, barrier units and alarm
panel typically mounted in the cargo control room (CCR).
The dual sampling lines cover the same “sampling location”. A
built-in purging feature, cleaning the lines sequentially with
overlapping detection (line 1 & 2), provides continuous and
reliable detection at the monitored area.
Direct gas sampling system – OGS 2.1 sampling
Water ingress system – OAS WI
For high level and overfill
The Omicron water ingress system has been specially designed and
manufactured for detecting the presence of water in the inner bottom in any
holds reaching a height of 0,5 m and another height of not less than 15 % of
the depth of hold but not more than 2 m. Furthermore, also holds located
partially or totally forward of the foremost cargo hold, and ballast tanks
located forward of the foremost cargo hold, collision bulkhead of Bulk carrier,
in conformity with SOLAS regulation XII/ 12 rule requirement
The system consists of a main alarm panel with cabinet and level sensor
operated by detecting the conductivity in a liquid when present. The sensor
and the alarm panel are connected together with an intrinsically safe barrier.
When the presence of water has reached the detecting points (ref. rule
requirement) of level sensor installed at the preset level in the cargo hold or
other space, the electric signals which are activated on the level switches are
transmitted to the main alarm panel. At the same time, the audible and visual
alarms are activated on the main alarm panel.
The system has also all necessary functions like loop monitoring of sensors
and power failure. An overriding device ensures that the alarm can be
deactivated or reactivated for the detector installed in the tank and holds used
for carriage of water ballast according to the SOLAS regulation XIII 12.1. The
main power and standby power are prepared in such way that if the main
power fails, the standby power will provide continuous power to the alarm
panel, and an alarm will be given.
The sensor:
Type WI-22 designed for various locations onboard a bulk
carrier. The construction is unique with the following
advantages:
• Complete unit in stainless steel.
• Non movable parts due to “conductivity principle”.
• Classified as “simple apparatus”
• IP68/ 2.5 bar with 35 m signal cable and mounting bracket
included.
• Tested working temperature -25 to 120 °C.
• Easy to function test.
• Designed without any active electronic components on
deck.
• Can operate in all sorts of bulk cargoes.
The alarm cabinet:
Type OAS is a complete signal monitoring and alarm unit which
is delivered for three alarm sensors per cargo hold. The third
channel (free of charge ) can be used for alarm sensor on top of
the cargo for covering water penetration through hatch covers.
• Intrinsically safe connections to sensors.
• Potential free contacts for common external alarms and light
& horn.
• All normal alarm functions.
• Optional RS485/-422 serial line communication with host
computer.
• The Alarm Panel can either be mounted in the front door of
the alarm cabinet or in a common console.
• Power supply: 115/230 VAC, Emergency power supply 24
VDC