MP-95 (-1+3)

Overload measurement function of MP-95 (-1+3)

The main task of the MP-95 (-1+3) is to detect linear overload and convert the measured acceleration into an electrical resistance value. This resistive output is then used by onboard recording or monitoring equipment. In practical aircraft operation, the sensor helps register load-factor-related data during flight, maneuvering, takeoff, landing and other operating modes. Since it works as a measurement sensor, correct installation direction and calibration condition are important for reliable data.

Potentiometric principle of the MP-95 sensor

The MP-95 works by converting mechanical displacement inside the sensor into a change of potentiometer resistance. When acceleration acts on the sensing mass, the internal mechanism moves, and this movement changes the resistance value. The connected recording system then interprets this resistance as an overload value. This is a relatively simple and robust measurement principle, but it still depends on the condition of the potentiometer, mechanical movement, wiring and the receiving equipment.

Damping system in MP-95 (-1+3)

The internal volume of the MP-95 sensor is filled with a special silicone-organic damping fluid. This fluid helps suppress oscillations of the sensing mechanism and prevents unstable output during vibration or short mechanical disturbances. For aircraft use, damping is important because the sensor must respond to actual overload changes rather than random vibration. During inspection, leakage, contamination or degradation of the damping section should be treated seriously, as these issues can affect the accuracy and stability of the output signal.

MP-95 in flight data recording equipment

The MP-95 (-1+3) is used in automatic flight parameter recording systems and other onboard monitoring equipment. In this role, it supplies overload information to the recorder, where the value is stored together with other flight parameters. The recorded overload channel may be used for technical analysis, service monitoring or investigation of abnormal events. If the recorded overload data is incorrect, the cause may be the sensor itself, but also the wiring, connector, calibration, input channel or recorder unit.

Supply and inspection of MP-95 (-1+3)

For procurement or replacement, the full designation MP-95 (-1+3) / MP-95 (-1+3) should be specified. The measuring range must be confirmed because similar overload sensors may have different ranges and cannot always be substituted by appearance alone. Before installation, the sensor should be checked for marking, housing condition, connector integrity, potentiometer resistance, smooth output change, damping condition and compatibility with the aircraft recording system. Product passport and technical documentation should be supplied where available.