Product Introduction of Water Ingress Detection Alarm System
Product Overview:
JNWIDJ water intrusion detection and alarm system is mainly used to monitor the accidental water intrusion in the cargo hold of bulk carriers and other monitored compartments. When the liquid level value reaches the alarm value, the device will send out an audible and visual alarm signal to remind the on-duty personnel to pay attention and take corresponding measures to ensure personal and property safety.
The system consists of the main alarm control box located in the cab, the repeater in the centralized control room, the safety barrier and the water level sensors located at each measuring point. The water level sensor is installed at the rear end of the cargo hold or near the center line. When the water level in the cargo hold reaches 0.5m, the device will issue an audible and visual pre-alarm. When the water level in the cargo hold reaches 15% of the total depth of the tank and does not exceed 2m, the device will emit a sound. Light master alarm. When the water level of the dry or empty tank is higher than 0.1m, the device will issue an audible and visual alarm.
Main function:
??  Water intrusion alarm function: When the cargo hold is flooded, the alarm box will send out sound and light alarm signals, and the display will display the accident compartment and accident time, and the central control room will alarm through the repeater
??  Different visual and audible alarms for main and pre-alarms
??  Active and standby dual power failure automatic switchover
??  Indicator light buzzer self-test function
??  Alarm delay time adjustable
??  Indicator light dimming function
??  Flash, mute, and override functions
??  Independent switch value extension alarm signal output check-in cabin monitoring and alarm system
??  Liquid level sensor or other circuit open circuit or short circuit fault alarm
??  CPU failure alarm
??  Main alarm and pre-alarm to VDR output interface
??  Alarm record and query function
Product Features:
??Using high-performance CPU for signal acquisition and monitoring
??Alarm record and query tracking
??Alarm delay time can be set with HMI
??Acquisition of high-performance CPU signal acquisition and monitoring
??Override control can be selected and cancelled through HMI
??Monitoring line open circuit and short circuit monitoring
??Intrinsically safe design can be used in hazardous areas
??Detect up to 33 water levels at the same time
??Convenient and flexible monitoring configuration
??Complete functions, stable and reliable
??System self-diagnostic monitoring
??CCS certification of China Classification Society
Technical parameters:
??Power supply: main power AC220V??10% 50/60Hz, backup power DC24V (steady state +20~-25%)
??Communication interface: RS232, RS485
??System power consumption: ??75W
??Measurement accuracy: 0.5% F.S. (sensor)
??Detection accuracy: ??Supporting sensors: pressure type liquid level sensor 4-20ma, float type liquid level sensor SPDT switch
??Installation method: wall-mounted, embedded
??Working temperature: -10??~+55??
??Adapt to sea climate, and use in salt spray, oil mist and mold environment
??Adapt to the vibration and shock caused by the long-term normal operation of the ship
??Protection level: alarm box IP22, junction box IP44
??Detection points: 33 points
??Provide CCS ship inspection certificate and environmental and electromagnetic compatibility test report
System diagram: