FILTER GP-FUEL 4N1981 - Caterpillar

The newly developed VISATRON® series VN87plus Oil Mist Detector (OMD) from SCHALLER AUTOMATION protects large diesel engines against oil mist explosion, caused by spontaneously occurring oil mist. It is part of a safety system that secures the life and health of the operating staff and prevents heavy damages to the engine.SCHALLER AUTOMATION developed this device to meet the IACS UR M10.It is not possible to directly monitor all potential sources of oil mist inside a large diesel engine. There are main bearings, large end bearings, pistons, liners, sliders, pumps, camshaft bearings, chains, gears or even tools left behind from installation - all of these parts could produce oil mist e.g. in case of lubrication problems. Therefore the philosophy of SCHALLER AUTOMATION is that only OMD-systems can securely prevent oil mist explosions by detecting the primary origin of danger: the oil mist itself.The VISATRON® series VN87plus OMD-system uses the approved wear-free suction system to continuously extract the atmosphere of the crankcase compartments and other engine locations. The system works actively and is not simply waiting for oil mist clouds. This ensures proper reaction times from the beginning of oil mist generation to an oil mist alarm.To avoid false alarms caused by splash oil the suction system makes use of Schaller's special suction funnels working independent of the rotation sense of the engine. Additional draining components ensure correct working under all operating conditions. This includes the application in power plants as well as on vessels with their static or dynamic inclinations. False alarms initiated by condensing water vapour are prevented by an integrated heater inside the measuring head housing.The OMD-system consists of following parts:* VISATRON® series VN87plus oil mist detector* Protection cover* Suction system including pressure regulator* Monitoring device (optional)Three different types of the VISATRON® series VN87plus oil mist detectors are available (see Figure 1):* VN115/87plus* VN116/87plus* VN215/87plusAll devices have a measuring head (2) which includes the optical measuring track under the control cover (3), a label on the front side and a display to give the user all important information for normal operations conditions. The measuring head is mounted on a vibration protected base plate.The negative pressure for the suction system is generated by an air jet pump (1) working with the Venturi principle. The electrical interface is integrated within a socket housing (5). The mating plug contains the Oil-Mist-Alarm button. The device can be connected directly to the engine safety system. The interface includes two Oil-Mist-Alarm outputs, a Pre-Alarm output and a Ready signal. VN115/87plusThe suction