Activate reverse alarm with electronic switch
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
Typical specifications
- Switch point range: 5 bar
- Pressure range: 0 – 80 bar
- Temperature range: -40 – 125 °C
- Accuracy: 2% FS
Features and benefits
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
Related products
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MEP 2600 and 2650 are designed for use in severe OEM applications and has excellent long term stability with zero drift. MEP 2650 has a single output: switch output, and is available with customized hysteresis and time constant.
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MEP 2200 and 2250 are designed for use in severe OEM applications and has excellent long term stability with zero drift. MEP 2250 has a dual output with switch function and an analogue output signal: absolute voltage or 10-90% ratiometric voltage.
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For further information, please contact us.