Extended Low Frequency (ELF) Accelerometer 7705

Series 7705 is a new generation of accelerometer. It combines two technologies (piezoelectric and DC response MEMS) into a single housing. This creates a wide frequency response bandwidth from DC (0 Hz) to 10 kHz.

Applications in which it is used include:

  • Health & Usage monitoring systems (HUMS)
  • Machinery Monitoring
  • Flight testing
  • Ride quality
  • Wind Turbine Measurements
  • Wide range of structural response applications

The Dytran 7705 series is a Extended Low Frequency (ELF) accelerometer.

Firstly, it combines features of the piezoelectric sensors, such as high frequency response. With those of variable capacitance accelerometers, such as true DC response. Therefore eliminating the need for using two different technologies to cover the bandwidth required for the application. Now slow rotations speeds in the sub – 1 Hz range and gear mesh frequencies up to 10 kHz can be made using the same sensor.

Secondly, this series is available in various g ranges and operates on 5-28 VDC power at 7-9 mA of current. Signal power is handles via a 4-pin M4 x 0.35 radial connector.

Finally made from titanium housing and weighing just 15 grams. It Is hermetically sealed for use in harsh environments. As well as a 10-32 tapped mounting hole and hex base.

Other features include:

  • Titanium
  • Hermetic
  • Hybrid design
  • Dual mode technology
  • AC and DC in one sensor.

 

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Extended Low Frequency (ELF) Accelerometer 7705

Model Specifications
7705A1 1.02 mV/m/s² sensitivity, 1,962.00 m/s² range, 4–pin M4.5 x 0.35 radial connector, 10–32 tapped hole, 15 grams,–51 to 121°C operation

Recommended Accessories: 6213, 6258, 6200

Compatible Cable: 6776A, 6895A

 

7705A2 5.10 mV/m/s² sensitivity, 392.40 m/s² range, 4–pin M4.5 x 0.35 radial connector, 10–32 tapped hole, 15 grams,–51 to 121°C operation

Recommended Accessories: 6213, 6258, 6200

Compatible Cable: 6776A, 6895A

 

7705A3 10.19 mV/m/s² sensitivity, 196.20 m/s² range, 4–pin M4.5 x 0.35 radial connector, 10–32 tapped hole, 15 grams,–51 to 121°C operation

Recommended Accessories: 6213, 6258, 6200

Compatible Cable: 6776A, 6895A

 

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7705 series