Accelerometers for HUMS and flight test applications


The Dytran 3168D2 is a new single-axis IEPE quartz accelerometer featuring a through-hole design for 360° cable orientation.

Said to be ideal for health and usage monitoring systems (HUMS) and flight test applications, model 3168D2 incorporates mechanical and electrical filters that effectively eliminate ultra high-frequency energy that can cause signal saturation (common in high-speed gearbox applications). The filters also act as a barrier to ‘zero shift’ phenomena in the data by protecting the sensing element from high-amplitude, high-frequency mechanical impacts. In addition, the filters suppress the natural frequency of the sensor to ensure correct ‘in-band’ vibration measurements during all test applications.

Key features of model 3168D2 IEPE quartz accelerometers include: a sensing element internally isolated from the outer case to prevent ground loops and enclosed by a Faraday shield to prevent electromagnetic/radio-frequency interference (EMI/RFI); 10 mV/g sensitivity and 1 Hz to 10,000 Hz (±3 dB) frequency range; a rugged, stainless steel case hermetically sealed for reliable operation in high humidity or wet environments; and integral Teflon cable terminating in twisted pair shielded flying leads and available in various lengths.

Model 3168D2 IEPE accelerometers find application in high-frequency aircraft/airframe vibration monitoring, HUMS, transmission vibration measurements and any general-purpose, high-energy applications in which signal saturation, shock overload and zero shift are potentially affecting signal