Murphy Power Ignition Detonation Sensing Interface

mpi.detonation.interface.280The MPI Detonation Sensing Interface System utilizes a pair of highly sensitive accelerometers to detect detonation. In the event of detonation the DSI signals the MPI Control System, via 4/20 ma control signal, which responds by immediately retarding the timing thus eliminating the potentially harmful effects of continuous detonation.


• Utilizes advanced piezoelectric accelerometer sensors to provide real-time analog signal
• Signal is proportional in amplitude to the levels of vibration detected
• Sensors respond over wide range of frequencies up to 10 KHz
• Retards timing to reduce vibration intensity or eliminate it entirely
• Sensor range: 0 - 500 g's
• Detects any source of vibration


• Easy to use controller interface
• Detects detonation tendencies at low levels before they reach greater intensity and cause engine damage
• Flexible controls, useful information for operators
• Wide bandwidth allows detection of most mechanical vibration sources including detonation
• Complete installation kits, wiring guidelines and sensor kits provided


• Power Requirements: 18-30 VDC, 300mA maximum
• Controller Operating Temp range: -4°F to 158°F, (-20°C to 70°C)
• Sensor Operating Temp Range: -40°F to 248°F, (-40°C to 120°C)
• Sensor Frequency Range: 20-5000 Hz
• Sensor Sensitivity: 10mV/g 500g F.S.


• Sales Bulletin (pdf)

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