Proven Condition Monitoring Solutions

Dual Output Magnetic Pick-Up Information

The Helitune Dual Output Magnetic Pick-Up has been specifically engineered for the collection of non-contact tachometer measurements from rotating aircraft components. Constructed from aerospace certified stainless steel and qualified to RTCA/DO-160G, it provides a fully encapsulated solution that offers continuous performance in harsh and demanding environments.

These are attached to a static part of the airframe and are triggered by the passing of single or double ferrous paddles known as Interrupters on the rotating assembly. Each pass of the paddle generates a signal, which is used as a timing reference for balance data, vibration signatures and tracking information. The tip of the MPU should be set to give a gap between the Interrupter of approximately 1.25mm. This can make installation on applications not previously designed for this type of sensor difficult. On these occasions it may be more simple to use an Optical Pick-up.

MPU’s are available in a variety of lengths and with differing sensor tips to suit particular applications.

Output Signal - Minimum 9V pk-pk under the following conditions:
Interrupter Air Gap             0.5mm
Interrupter Velocity            5m/s
Load Resistance                200kΩ


Coil Specification
Resistance                       560 - 680Ω
Inductance                       100 - 150mH


Dimensions Body:              L=57mm Ø16mm - Locknut: 21mm AF x 4mm
Weight                             60g MAX (including 2 locking nuts)
Operating Temperature       -50°C to +130°C to RTCA/DO-160G Section 4 Cat B4
Operational Shock              6g Sawtooth @ 11ms to RTCA/DO-160G Section 7 Cat B
Vibration                           To RTCA/DO-160G Section 8 Cat U2
Crash Safety                     20g Sawtooth @ 11ms to RTCA/DO-160G Section 7 Cat B
Material                            Stainless steel - BS S130 aerospace certified
Sealing                             IP67 Fully encapsulated
Connector                         Threaded 4-Pin

  • Dual Output MPU Data Sheet

    Filesize: 590.49 kB

    Download Dual Output MPU Data Sheet

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