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Oil Mist Detection

2301D-Load

Graviner Mk6 Detector

The Oil mist detection is using a well proven sampling method. System is selectable to scan between 1 and 64 detectors.
Microprocessor electronics ensures very high degree of active fault indication. Each detector can be individually measured to enable condition monitoring of each crank space.
The Mk6 OMD is an analogue addressable oil mist detection system, capable of monitoring up to 64 detector heads fitted on up to 8 engines. This is achieved without sample pipes and with minimum cabling. Each detector head monitors a single cranks pace and is a stand-alone device. When assigned a unique address and supplied with 24V DC it gathers oil mist density data and converts it to a digital signal for transmission via the data cable to the control unit.
The control unit can be configured to monitor from one to eight engines. Detector addresses are identified and associated with the appropriate engine. Deviation levels, average alarm levels and alarm output requirements are all set from the control unit.
The large LCD display shows, on demand, the signal from each detector and indicates the average oil mist level for each engine. In the event of an alarm, the display immediately shows the oil mist signals for the relevant engine. It also enables the individual readings of each detector and the average on an engine to be displayed on demand and automatically under alarm conditions. In the event of a detector fault, that detector can be isolated without affecting the other detectors on the engine. The system will continue to operate while the faulty detector is replaced.
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723Plus-DigitalControls Graviner Mk7 Oil Detector
The Graviner Mk7 OMD System is an auto addressed oil mist detection system capable of monitoring up to 10 Control Units per system with each Control Unit having up to 10 detectors connected to it. This is achieved without external sample pipes and with minimum cabling. Each detector head monitors a single crank space and is a stand-alone device. On power up the detectors gather oil mist density data and convert it to a digital signal for transmission via the data lines in the detector cable to the Control Unit which is also mounted on the side of the engine. Alarm levels and Alarm output requirements are all set from either the Remote Indicator Display or a PC connected directly to the control unit.
The Remote Display Unit houses a 7.5” LCD Touch Screen display that shows, on demand, the signal from each detector and indicates the oil mist level for each engine and when required each detector as well as the status of the system.
In the event of an alarm, the display immediately shows the oil mist levels for the relevant engine. It also enables the individual readings of each detector on the engine to be displayed on demand and automatically under alarm conditions. In the event of a detector fault, that detector can be isolated without affecting the function of the other detectors on the engine. The system will continue to operate while the faulty detector is replaced, repaired or maintenance is carried out.
The Mk7 detectors still use optical sensing; (light scatter) as it’s detection method and continually monitors the oil mist density in the crank space to which it is connected. In addition, it self-checks for any internal faults. The Control Unit interrogates each detector in turn, identifies the position connected at the Control Unit, the oil mist density value and determines the status of the detector.
The Control Unit can be supplied with or without a control membrane. The control membrane has LED indication for detectors connected, push buttons for isolation and de-isolation of detectors, as well as pushbuttons for Accepting and Resetting Alarms.

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