Dytran Instruments model 7705A1 ELF accelerometer
Dytran Instruments’ model 7705A1 Extended Low Frequency (ELF) accelerometer combines both a piezoelectric and a variable capacitance MEMS element, combined as a single output, to create what the company claims is the widest frequency response bandwidth in the industry, from DC (0 Hz) to 10 kHz. The technology combines the high frequency response of piezoelectric sensors with the true DC response of variable capacitance accelerometers, eliminating the need for two different technologies to cover the bandwidth of interest in an application. Slow rotation speeds in the sub-1 Hz range and gear mesh frequencies up to 10 kHz can now be made using the same sensor.
The accelerometers are suitable for flight testing, ride quality, health and usage monitoring systems, wind turbine measurements, machinery monitoring and a wide range of structural response applications.
The product is offered with a 200 g range and operates on 5–28 VDC power at 7–9 mA of current. Signal/power is handled via a 4-pin M4.5 x 0.35 radial connector. The lightweight titanium housing weighs just 15 g and is hermetically sealed for use in rugged environments, from test tracks to outer space. The product incorporates a 10–32 tapped mounting hole and a hex base.
Phone: 07 3868 4255
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