Reverse Warning Alarm

  • Off-highway machinery in construction sites are required to warn the environment when reversing. Although many reverse warning alarm systems are commonly using a mechanical switch, Danfoss recommends using an electronic switch, type MEP mounted on the hydraulic circuit to activate the alarm.

    Mechanical Switches Have Many Problems

    • Mechanical switches often leak causing warranty claims
    • The electrical contacts can burn out resulting in failure
    • The general accuracy is around +/- 5%
    • The set point can drift over time
    • Over and burst pressure limitation due to moving parts
    Benefits by Using Electronic Pressure Switches
    • Electronic pressure switches have 100% welded construction so no leakage possible
    • No electrical contacts to burn out
    • Highly accurate – better than 2% typical
    • No set point drift
    • Over and burst pressure advantage due to fully welded design
    • All the advantages from the “world” of transmitters in relation to vibration shock etc.
    • A more reliable reverse alarm system
    • Less wear outs of the switch due to no mechanical parts
    • Reduced warranty claims
    Typical Specifications
    • Switch point range: 5 bar
    • Pressure range: 0 – 80 bar
    • Temperature range: -40 – 125 °C
    • Accuracy: 2% FS
    Recommended Products


  • Reverse warning alarm

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