Oil Mist Detector
Daihatsu
Refurbished
Daihatsu MD-SX Oil Mist Detector Controller with Sensor Units
The Daihatsu MD-SX Oil Mist Detector is a marine engine protection system designed to continuously monitor oil mist concentration inside diesel engine crankcases. Oil mist detection is one of the most important safety functions onboard vessels because abnormal oil mist inside a crankcase can indicate overheated bearings, friction, lubrication failure, piston problems or other developing engine faults.
Daihatsu states that the MD-SX uses a natural diffusion system and does not require a suction mechanism, drive air or mist-detection piping at the sensor units. The system also uses an optical dispersion method for compact oil mist concentration detection, which supports reliability and easier maintenance compared with conventional suction and piping-based arrangements.
The MD-SX system is important for ship operators because it helps detect abnormal crankcase conditions before they become serious failures. Early warning allows engineers to stop or reduce engine load, inspect the affected area and prevent major damage. This makes the system valuable for main engines, auxiliary engines and diesel generator engines operating in harsh marine environments.
SM MARINE SERVICE™ supplies Daihatsu MD-SX controllers, oil mist sensors, DC power boxes, cables, complete system assemblies, spare parts, repair services, calibration support and worldwide sourcing assistance for marine diesel engine protection systems.
The Daihatsu MD-SX Oil Mist Detector system normally consists of an MD-SX controller, multiple sensor units installed at crankcase monitoring points, signal cables, power supply components and alarm output interfaces. The controller constantly monitors the oil mist density in the crankcase and indicates oil mist level; when oil mist density increases over normal level because of overheated bearing or similar abnormal condition, the system generates alarms for early detection and accident prevention.
Your supplied image shows a complete MD-SX controller arrangement with DC power box and multiple sensor units. This type of setup is commonly used for cylinder-by-cylinder crankcase monitoring, where each sensor point helps identify where abnormal oil mist is developing.
The MD-SX is a sensor-type system. Industry references describe it as using sensor units inserted directly into the crankcase through the sidewall, allowing the sensing part to monitor crankcase oil mist directly instead of extracting oil mist through long sampling pipes. This design supports faster response, simpler installation and easier maintenance.
SM MARINE SERVICE™ can support customers who need a complete replacement system or individual replacement parts such as controller units, sensor units, DC power boxes, cables and mounting accessories.
Daihatsu MD-SX Controller, DC Power Box and Sensor Assemblies
The MD-SX uses a natural diffusion principle at the sensor units. This means the system does not depend on suction pumps, fans, drive air or long oil mist extraction piping at the detection points. This design reduces mechanical complexity and helps improve reliability in engine room environments.
The detector uses optical dispersion technology to detect oil mist concentration. This method enables compact detection and helps the system identify abnormal mist levels inside the crankcase before the condition develops into a major engine safety risk.
The sensor-type design allows direct monitoring of crankcase oil mist levels. Direct sensor monitoring helps detect abnormal oil mist at the source and supports faster fault identification compared with traditional pipe-type sampling arrangements.
The MD-SX controller displays oil mist level and system status. It can indicate abnormal conditions such as pre-alarm, high alarm and system failure depending on system configuration. The display helps engineers quickly understand which part of the engine requires attention.
Marine references describe the MD-SX as suitable for low-speed, medium-speed and high-speed diesel engines. This makes it useful for main propulsion engines, auxiliary engines and generator engines installed on various commercial vessels.
Because the MD-SX sensor arrangement does not require suction piping for mist detection at sensor units, inspection and maintenance can be simpler. This is especially useful onboard ships where engine room maintenance time and spare part availability are critical.
SM MARINE SERVICE™ provides spare parts and technical support for MD-SX systems used on operational vessels worldwide.
Daihatsu MD-SX Complete Oil Mist Detector Arrangement
| Parameter | Description |
|---|---|
| Manufacturer | Daihatsu Diesel / Daihatsu Infinearth product family |
| Product Name | MD-SX Oil Mist Detector |
| Product Type | Marine Engine Oil Mist Detection System |
| Main Function | Crankcase oil mist concentration monitoring |
| Detection Principle | Natural diffusion with optical dispersion detection |
| System Components | Controller, sensor units, DC power box, cables, alarm interfaces |
| Sensor Installation | Sensor-type crankcase monitoring arrangement |
| Alarm Function | Pre-alarm, high alarm and system failure indication depending on configuration |
| Typical Power Supply | DC 24V system arrangement depending on installation |
| Application | Marine diesel engine crankcase safety monitoring |
| Engine Type | Main engines, auxiliary engines, diesel generator engines |
| Vessel Use | Commercial marine, offshore and industrial diesel engine applications |
| Supply Condition | New, used and reconditioned equipment available through SM MARINE SERVICE™ |
Available public references indicate that a standard MD-SX controller can connect with up to 16 sensor points and that the system has classification approvals listed in Daihatsu-related literature, including NK, DNV GL, BV, LR, ABS, CCS, KR and others. Always confirm approval and technical requirements against the vessel’s original documentation and class requirements before replacement.
The MD-SX Oil Mist Detector can be used on main engines and generator engines where continuous crankcase monitoring is essential for safe long-distance operation.
Bulk carriers often operate for long periods under heavy engine load. An oil mist detector helps protect the main engine and auxiliary engines from serious crankcase-related failures.
Engine room safety is extremely important on oil tankers. The MD-SX supports early detection of dangerous crankcase conditions and helps reduce operational risk.
Chemical tankers require reliable machinery protection systems due to strict safety requirements and sensitive cargo operations. Oil mist detection is an important part of engine safety management.
LNG carriers depend on reliable propulsion and power generation. An MD-SX system supports safe engine monitoring and helps reduce the risk of machinery breakdown.
LPG carriers use engine protection systems to maintain safe vessel operation during cargo transportation and port activities.
Offshore vessels operate in demanding environments where unexpected machinery failure can create serious operational delays. The MD-SX helps support preventive maintenance and engine safety.
Passenger vessels require reliable engine room safety systems to protect passengers, crew and equipment. Oil mist detection contributes to safe and continuous operation.
Research vessels often operate with specialized equipment and tight schedules. Reliable engine protection helps avoid voyage interruption.
Fishing vessels use diesel engines continuously during operations. Crankcase oil mist detection supports engine reliability and reduces the risk of unplanned downtime.
The MD-SX can be part of a wider vessel automation and safety environment that may include Radar, ECDIS, AIS, Gyro Compass, Autopilot, VDR, BNWAS, GPS, Satellite Compass, Navtex, Inmarsat, GMDSS, Marine Automation, Engine Monitoring Systems, Boiler Control Systems and Fire Alarm Systems.
Daihatsu MD-SX Oil Mist Detector with Sensors and Power Box
SM MARINE SERVICE™ provides worldwide sourcing and supply support for Daihatsu MD-SX Oil Mist Detector parts, including MD-SX controller units, sensor units, DC power boxes, power supply components, sensor cables, communication cables, mounting brackets, connector assemblies, alarm output components, display components and complete replacement assemblies.
For shipowners and technical managers, fast access to oil mist detector spare parts is important because a defective OMD system can affect engine safety readiness and class inspection requirements. SM MARINE SERVICE™ can support urgent inquiries for both New Equipment and Reconditioned Equipment depending on customer requirements and budget.
We also support related oil mist detector systems and engine safety equipment used onboard vessels, including Visatron, Graviner, Daihatsu MD-9M, Schaller Automation, Kidde Graviner, Specs Vision, Rivertrace and other marine safety and engine monitoring brands.
SM MARINE SERVICE™ provides repair, troubleshooting, calibration, overhaul, testing and technical support services for Daihatsu MD-SX Oil Mist Detector systems.
Common service support includes controller inspection, sensor testing, cable checking, DC power box inspection, alarm output verification, display and keypad inspection, communication fault diagnosis, sensor replacement support, system failure troubleshooting, pre-alarm and high alarm investigation, functional testing and onboard technical support.
Typical problems may include sensor failure, cable damage, low power supply, faulty alarm output, LCD display problem, communication issue between sensors and controller, incorrect alarm indication, contamination at sensor head or system failure indication. Public service guidance also highlights the importance of cleaning and operation control for MD-SX sensors, which supports reliable system performance.
SM MARINE SERVICE™ helps customers identify the correct replacement part, compare old and new unit details, arrange repair or exchange options and provide support for marine automation and engine monitoring systems.
SM MARINE SERVICE™
Bangladesh Office
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh
China Warehouse and Support Center
Shanghai, China
SM MARINE SERVICE™ supplies both New Equipment and Reconditioned Equipment depending on customer requirements and budget.
We provide worldwide supply, sourcing, repair, calibration, technical support and spare parts services for marine automation, navigation, communication and marine electronic systems.
Website : https://www.smmarineservice.com
Email : info@smmarineservice.com
WhatsApp and Viber : +8801818929292
Marketing Contact: Nazmul Hasan Bhuiyan
Mobile WhatsApp and Viber : +8801730296909
The Daihatsu MD-SX Oil Mist Detector is a critical marine engine protection system designed to monitor crankcase oil mist concentration and warn engineers before abnormal engine conditions become dangerous. Its sensor-type design, natural diffusion detection principle, optical dispersion measurement and controller-based alarm monitoring make it a reliable solution for marine diesel engine safety.
For Daihatsu MD-SX controller supply, sensor units, DC power boxes, cables, spare parts, repair, troubleshooting, calibration, testing or complete replacement systems, contact SM MARINE SERVICE™. We provide worldwide support for New, Used and Reconditioned marine automation, engine monitoring and safety equipment, helping shipowners and marine engineers maintain safe, reliable and cost-effective vessel operation.
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