Introduction To Industry Scenarios
The core of shipbuilding and shipping is high salt spray corrosion, strong vibration impact, wide temperature range (-20 ℃~60 ℃), high humidity, long-term continuous operation, and classification society certification requirements.
Typical measuring points:
Shipbuilding stage: dock water level, segmented ballast tank liquid level, hull structure pressure, cabin tightness pressure
Shipping phase:
Ballast tank: liquid level, pressure (stability/longitudinal and transverse tilt control)
Fuel/oil tank: oil level, oil pressure (main engine fuel supply)
Freshwater/sewage tank: liquid level, interface (domestic water/environmental discharge)
Cabin: Main engine lubricating oil pressure, cooling water pressure, fuel injection pressure, oil pan oil level
Cargo hold: liquid/material level (liquid cargo, bulk cargo), accumulated water at the bottom of the hold
Draft/attitude: bow/stern draft level, trim/roll calculation
Adapt to Core Products
QDY30A marine salt spray anti-corrosion input type liquid level transmitter (316L/duplex steel IP68、 Salt spray resistance, -40 ℃~80 ℃, CCS classification society certification adaptation, vibration resistance 20G)
QDY60 series ballast water/fuel tank specific static pressure level transmitter (anti oil/marine life, long-term immersion, zero stability, seawater corrosion resistance)
QDW90A-3051 marine flange level transmitter (flat diaphragm anti sticking oil/mud, cabin wall installation, good tightness, dedicated for cargo hold/sewage tank)
QDKG marine anti-corrosion and explosion-proof intelligent pressure switch/transmitter (0.075 level, Ex d II CT6, 316L, anti vibration, oil pressure/water pressure/air pressure specific)
GLG marine long-distance anti-interference signal isolator/RS485 (2500V isolation, anti frequency converter/radar interference, 10km stable transmission, onboard bus)
S803/SS803 marine moisture-proof salt spray digital display instrument (IP65, 316 stainless steel, wide temperature, local alarm, engine room/pump room wall mounted)
Product Function
QDY30A/QDY60+QDW90A-3051 liquid level class (ballast/fuel/fresh water/sewage tank)
Level of ballast water tank: IP68, salt spray resistant, 316L, real-time monitoring of liquid level, linkage of ballast pump/valve, precise control of ship draft, longitudinal/transverse tilt, ensuring navigation stability, avoiding overturning risk, and meeting IMO ballast water management regulations.
Fuel/Lubricating Oil Tank Oil Level: Anti oil pollution, long-term stability, precise monitoring of oil level, prevention of empty tank fuel cut-off/overflow, ensuring continuous fuel supply for the main engine, avoiding mid voyage shutdowns, optimizing fuel inventory management, and reducing operating costs.
Freshwater/sewage tank level: anti-corrosion, anti clogging, monitoring of domestic fresh water inventory and sewage capacity, low level replenishment, high level alarm, ensuring crew's domestic water supply, preventing illegal discharge of sewage overflow, meeting MARPOL environmental protection requirements.
Cabin bottom water level: QDW90A flat membrane anti silt, real-time monitoring of cabin bottom water, automatic start stop linkage of drainage pump, to prevent water from soaking the ship structure/electrical equipment, avoid corrosion and short circuit, and extend the life of the ship.
QDKG marine pressure switch/transmitter (engine room/pipe network/tightness)
Main engine lubricating oil pressure: high precision, anti vibration, high temperature resistance, real-time monitoring of oil pressure, low oil pressure alarm/automatic load reduction, prevention of bearing burnout, protection of main engine core equipment, and avoidance of major machine damage accidents.
Pressure of ballast water/fire protection pipeline network: anti-corrosion, long-term stabilization, monitoring of pipeline network pressure, ensuring the normal operation of ballast system/fire protection system, preventing pipe bursting/insufficient pressure, and meeting ship fire protection and safety regulations.
Ship hull tightness pressure (shipbuilding/maintenance): explosion-proof, micro pressure type, monitoring cabin tightness test pressure, determining weld/bulkhead sealing, preventing navigation water leakage, and ensuring ship structural safety.
Cooling seawater pressure: corrosion-resistant and resistant to marine organisms, monitoring cooling water pressure to ensure the cooling effect of the main/auxiliary engine, preventing overheating shutdown, and maintaining power system stability.
GLG marine isolator (strong interference/long-distance)
Ship strong electromagnetic interference (radar/frequency converter/radio): 2500V isolation, common mode rejection ≥ 60dB, cutting off ground loop, suppressing peak interference, DCS/engine room monitoring system signal stability, no drift/jump, no false alarm/false interlock, ensuring navigation safety.
Long distance signal (engine room → cab/cargo hold → central control): RS485+Modbus, 10km signal without attenuation, packet loss rate<0.1%, real-time synchronization and reliable traceability of the entire ship data, meeting the requirements of intelligent ship data interconnection.
S803/SS803 Marine Digital Display Instrument (Local/Engine Room)
On site display of engine room/pump room: IP65 moisture-proof salt spray, high brightness LED, 316 shell, intuitive reading for inspection, no entry into dangerous/high temperature areas, safe and efficient.
Over limit alarm/interlock: relay output, linked sound and light alarm, emergency stop/valve closing, 1-second response, preventing oil overflow/oil cut-off/overpressure accidents.
Data upload/accumulation: Modbus communication, access to ship monitoring system (AMS), energy/fuel consumption statistics, fault tracing, meeting the requirements of intelligent ships and maritime supervision.
Addressing Industry Issues
High salt spray+high humidity+vibration impact, instruments are prone to corrosion and damage
Ordinary instruments corrode/drift/fail for 3-6 months, frequent replacement affects navigation, high maintenance costs, and do not comply with classification society certification.
Inaccurate ballast/fuel level, poor navigation stability+high operating costs
Large liquid level error, loss of draft control, excessive lateral/longitudinal tilt, high navigation safety risks; Inaccurate fuel metering, chaotic inventory, and uncontrolled fuel consumption costs.
Abnormal cabin pressure/oil level, frequent engine failures
Lagging oil pressure/oil level monitoring, burning of bearing shells, engine shutdown, single accident losses of millions, delayed shipping schedule, high breach of contract compensation.
Strong electromagnetic interference, signal jumping and false alarm
Radar/frequency converter interference monitoring system false alarm, false shutdown, affecting navigation decisions and increasing crew workload.
The pressure of environmental compliance is high, and the fines for sewage/oil spills are high
The monitoring of sewage tanks/oil tanks is not allowed to discharge/spill oil in violation of regulations, and maritime fines range from 100000 to 1 million yuan per incident, which affects the reputation of the ship.
Danger of manual patrol inspection+low efficiency
High temperature/oil pollution in the engine room, high altitude at the top of the cabin, high risk of manual liquid level measurement/meter reading, low efficiency, data lag, and untimely adjustment.
Direct Customer Benefits
Navigation safety and compliance benefits (core)
Precise control of ballast water level: ship stability accidents are reduced by 100%, overturning risk is reduced by ≥ 98%, meeting IMO ballast water regulations and avoiding fines for detention.
Fuel/wastewater compliance: 100% reduction in oil spill/illegal discharge accidents, avoidance of maritime fines, and passing port state inspections (PSC).
Host protection: Reduce host downtime by ≥ 95% due to host failures, avoid annual machine damage losses of ≥ 2 million yuan, and reduce compensation for shipping delays.
Operating costs and energy-saving benefits (direct savings)
Accurate fuel measurement: Fuel inventory error is reduced by ≥ 90%, fuel consumption costs are reduced by 3% -5%, and annual fuel savings for ships of 10000 tons are ≥ 800000 yuan.
Intelligent control of ballast pump: The power consumption of the ballast system is reduced by 20% -30%, with an annual power saving of ≥ 300000 kWh and a power saving of ≥ 240000 yuan.
Instrument high reliability: salt spray environment has a lifespan of 2-3 years, with a failure rate reduction of ≥ 80%, annual maintenance costs reduced by ≥ 70%, and spare parts expenses reduced by ≥ 300000 yuan.
Ship and equipment lifespan benefits
Monitoring of bottom water accumulation: The corrosion rate of the hull is reduced by ≥ 60%, the lifespan of the hull is extended by 5-8 years, and the annual maintenance cost is reduced by ≥ 500000 yuan.
Cabin equipment protection: The lifespan of water pumps/valves is extended by 2 times, and the annual cost of equipment replacement is reduced by ≥ 200000 yuan.
Maintenance and labor benefits
Unmanned operation: Reduce manual inspections by ≥ 80%, save labor costs of ≥ 120000 yuan per year, and eliminate high-risk operations in the cabin/roof.
Remote monitoring: connected to intelligent ship systems for remote diagnosis/scheduling, improving operation and maintenance efficiency by ≥ 50%.
