1.4 - ELF Extended Low Frequency Sensor Designs
- etc2014 - 34. European Telemetry and Test Conference
2014-06-03 - 2014-06-05
- 1. Sensors & Applications
- K. Westhora - Dytran Instruments Inc., Chatsworth, CA, U.S.A
- 19 - 21
Piezoelectric accelerometers are dynamic sensors with a usable frequency response that goes from fractions of one Hertz over 10 kHz. A piezoelectric sensor can de designed with a very low frequency response, called quasi-static, but it won't be a true static [DC] response.
DC type Accelerometers that can measure from static, zero Hertz; up to a few thousands Hertz, but not more.
The need for a single sensor package that can cover the complete frequency spectrum response from zero Hertz to more than 10 kHz convinced Dytran Instruments to develop the ELF which merges two sense elements combined into one output.