Surveyor™ Water Ingress Detection & Alarm System With Integrated Temperature Monitoring & De-watering
The SURVEYOR™ Water Ingress Detection & Alarm System is designed to detect the presence of water in the cargo holds of bulk carriers. The system is in full compliance with regulations, following the International Association of Classification Societies' adoption of a unified interpretation of the International Maritime Organization's (IMO) Performance Standards for Water Level detectors on Bulk and single hold General Cargo Carriers (to be enforced in 2007 onwards). Regulation requires bulkers to be fitted with water ingress detection equipment that will provide audible and visual alarms on the bridge in the event of water levels being detected in cargo holds (at two levels) and other spaces forward of the first collision bulkhead.
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Comparative advantages:
"The only two-in-one system in the market today!
Water ingress detection and temperature monitoring for the price of one system!"
- Easy installation by DN 40, PN 10 flange.
- Maintenance free, easy cleaning.
- No moving parts, no calibration required.
- Self checking system - no need for inspection before loading.
- Sensor operates in the presence of on all types of cargo.
- Sensor is sufficiently protected from damage by cargo solids.
- Cost effective to install for retrofit ships.
- Stable operation by self-checking intelligent digital sensor
- Multipurpose display unit.
- Local readouts, communication to lAS/PC.
- System can include Ballast/Service tanks draft monitoring.
- IP 68, dust and waterproof, lEC 60529.
- Salt water resistant when mounted in ballast tanks.
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FEATURES:
The system integrates a touch screen display in a monitoring alarm panel, zener barriers and water ingress detectors in cargo holds/void spaces. Ariston provides cost effective solutions in close co-operation with ship owners for both new buildings and retrofit ships.
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The Ariston WIAS microwave radar sensor with
integrated temperature monitoring (pat.pending).
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PRINCIPLE OF OPERATION:
The microwave water ingress detection system is based on the dielectric properties of water molecules. The sensor constantly checks the dielectric constant of the cargo present on the microwave antenna. Reflection is processed based on medium's dielectric properties. Water ingress in the cargo hold leads to a substantial change of the reflection coefficient and thus is detected by the microwave sensor. Presence of water will switch the sensor to an alarm state - in both empty and loaded cargo compartment, regardless of the type of cargo carried!
INSTALLATION:
The water detection sensors are installed in each cargo hold. One sensor is installed at a height of 0.5 m above
tanktop and another at a height of not less than 15% of the depth of the cargo hold but no more than 2 m above the tanktop. In any ballast tank forward of the collision bulk head, one sensor is installed at a height not exceeding 10% of the tank capacity. In any dry or void space other than chain locker, any part of which extends forward of the foremost cargo hold and the volume of which exceeds 0.1 % of the ships maximum displacement volume, one sensor is installed at a height of 0.1 m above the deck.
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Welding piece for hopper plate installation, with sensor's heavy duty protector when carrying scrap or other heavy cargoes.
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For ships with hopper plate cargo holds, the sensors are flange mounted on a steel adaptor plate 260 x 220 mm which is welded into the hopper plate. The adaptor plate is supplied by Ariston as an optional item. The adaptor plate may be easily cleaned by water jet/wash down after unloading the cargo, and the installation method assures that no residues are left after wash down. The sensors can be easily removed in case of maintenance. This installation method assures a simple and cost effective installation to save work and time during retrofitting. For vessels without hopper plate cargo holds, the yard should install junction boxes/deck penetrations on upper deck and 2” cable protection pipes with supports in the cargo holds. The sensors are mounted into the hopper plate adaptor/cable protection pipes by a standard flange DN25. For void spaces and the bosun's store, the sensor is mounted on a wall mounted bracket supplied by Ariston.
MAJOR FUNCTIONS:
- Pre-alarm at 0.5 m
- Main alarm at 2 m
- Integrated temperature output
- Self test malfunction alarm/line monitoring
- Override/interlock function
- Automatic cancellation of override condition
- Override indication
- Power failure alarm
- Automatic power redundancy switch over
- Lamp/buzzer test
- Common alarm
- Alarm time delay
- On board function test
- Configuration of the system from Windows™ program
Water ingress detection sensor with a temperature element, with a flange. This sensor configuration provides for quick and cost saving installation on a pre-burnt opening on a hopper plate or a stool plate. Sensor’s antenna is exposed to the cargo, without need of a filter system or otherwise protection. Cleaning of sensor antenna is not required, as well as there are no consumables (filters) necessary.
Technical data
SENSOR SPECIFICATIONS
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Measuring principle: Microwave
- Accuracy detection water: <0-10 cm
- Accuracy temperature: <+-1°C
- Power supply: 8-24VDC (From zener barrier AN.ZB 485)
- Power consumption: <0.5W
- Data communication: Digital over RS 485
- Intrinsic safe: EX II 1GD T80°C, IP 68 EEx ia IIC T4
- Sensor material: Housing: AISI S3 1254 coated
- Front end material: PEEK
- Operating temperature: -25°/ +70°C
- Size: I=179 mm, OD body 48mm
- Flange: DN 40, - PN10
- Cable: Ø=7,1 mm Blue, 4 x 0.30mm2
- Cable length: 5m included, extra length on request
- Weight: 2 kg (sensor) + 0.1 kg/m (cable)
- Protection: IP 68 to 30mWG
- Type approval: All major classification societies
Control Unit TCU:
- Dimensions: 240 u 125 c SD (LxWxH) mm
- Mounting us rail DIN 35
- Power supply #1 (DC/DC): 24 VDC (18 to 31V)
- Power supply #2 (insulated]: 24VDC (22.5 to 27 V)
- Power consumption: max. 90W
- Power supply redundancy, automatic switchover included (24 VDC) (battery back-up is optional)
- Power supply and communication to I/O modules and TDU
- Each TCU accommodates 16 x AN-ZB485
- Communication to 3rd party: 1xRS485, 2xRS232
- Dedicated outputs to for flash lights and siren
- Alarm relay output and silence input. Visual and a audible alarms in accordance with IMO “Code on Alarms and Indicators 1995”
Display Unit TDU
- Touch screen 5,7” colour TFT 4DC cd/sqm
- Dimensions: 200 x 150 x 45 (WxHxD)mm
- Panel / console mounting
- Cut-out: 150 x 130 (WxHxD)mm
- Power supply from TCU
- Communication with TCU: RS232
- Colour: Blue NCS 3070R90B
DE-WATERING SYSTEM FOR INSTALLATION IN VOID SPACES
AND FOREPEAK TANK ON BULKERS COMPLIANT WITH SOLAS Ch.XII Reg 13.
(Typical scope of supply)
Central Units
1 Cabinet 300x300x120 (wall installation) , IP 66, internal wired for installation in control room containing -Switches, controls and relays to actuators -Open/close valve indicators, lamps IP67 -Power supply blocks -Accessories
Mechanical Parts:
1 Bosun’s Store / Deck Store / Chain Locker (type and number of void spaces as existing on board the ship) -xxx pcs – complete valve with actuator size 40-50, JIS flange, local open/close valve indicators and remote included, see drawing TN60002
1 For Forepeak Ballast Tank
-Multiturn actuator, for installation over/parallel to existing manual turn for FPT angle valve, see drawing (alternative submerged valve with actuator fro replacement of the existing valve)
Shipboard cable form cabinet to actuators is not included.
Documentation
Installation manual in English – 2x copies Operation manual in English in 2x copies System Drawings in 2x copies Packing, despatch and internal expedition fees.
DownLoad:
TN480003 TCU-TDU-Water ingress.pdf (136kb)
