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Model 787-500 Side-Exit, Low-Frequency Accelerometer

Brand: Wilcoxon Sensing Technologies
Wilcoxon’s side-exit, high-sensitivity broadband accelerometer offers an interior sensing element capable of producing 500 mV/g. This results in clear signals from low-speed, low-level vibration amplitudes up to its full scale capability of 10 g. The low-end frequency response of the 787-500 makes it ideal for slow-speed applications such as wind turbine generators and cooling towers. A high top-end frequency response offers clear signals for early bearing fault detection, gearbox wear, and other high-speed applications. The 787-500 is supplied with a 2 pin MIL-5015 connector. 

Low-frequency measurements for condition monitoring can present some of the biggest challenges for vibration detection. Applications typically include slow-speed agitators, wind turbines, cooling towers, semiconductor lithography, and seismic monitoring. Low-frequency measurements and low levels of acceleration are closely related, making the electronic circuitry critical to obtaining a good measurement. In order to have adequate voltage levels with high signal-to-noise ratio at the acquisition equipment, low-frequency accelerometers must have sensing elements with higher output than general-purpose sensors. The low-end frequency cutoff of the amplifier is designed to offer clear signals down to < 0.1 Hz.
Features
  • Low profile
  • High sensitivity
  • Clear signals at low vibration levels
  • Extended low end frequency response
  • Improved signal to noise ratio versus other general-purpose accelerometers
  • Hermetically sealed
  • Rugged design
  • ESD-protected
  • Reverse wiring protection
  • Manufactured in an approved ISO 9001 facility
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Wilcoxon’s side-exit, high-sensitivity broadband accelerometer offers an interior sensing element capable of producing 500 mV/g. This results in clear signals from low-speed, low-level vibration amplitudes up to its full scale capability of 10 g. The low-end frequency response of the 787-500 makes it ideal for slow-speed applications such as wind turbine generators and cooling towers. A high top-end frequency response offers clear signals for early bearing fault detection, gearbox wear, and other high-speed applications. The 787-500 is supplied with a 2 pin MIL-5015 connector. 

Low-frequency measurements for condition monitoring can present some of the biggest challenges for vibration detection. Applications typically include slow-speed agitators, wind turbines, cooling towers, semiconductor lithography, and seismic monitoring. Low-frequency measurements and low levels of acceleration are closely related, making the electronic circuitry critical to obtaining a good measurement. In order to have adequate voltage levels with high signal-to-noise ratio at the acquisition equipment, low-frequency accelerometers must have sensing elements with higher output than general-purpose sensors. The low-end frequency cutoff of the amplifier is designed to offer clear signals down to < 0.1 Hz.
Features
  • Low profile
  • High sensitivity
  • Clear signals at low vibration levels
  • Extended low end frequency response
  • Improved signal to noise ratio versus other general-purpose accelerometers
  • Hermetically sealed
  • Rugged design
  • ESD-protected
  • Reverse wiring protection
  • Manufactured in an approved ISO 9001 facility

Specifications

Approvals & Certifications

  • CE

Approvals & Certifications

  • ISO 9001

Circuit Protection

  • ESD Protection
  • Reverse Wiring Protection

Electrical Connectors

  • Cable (J10 / J9T2A)
  • Mating Connector: R6 Typical
  • Output Connector: 2-Pin, MIL-C-5015 Style

Enclosure, Body Material

  • 316L Stainless Steel

Frequency

  • Frequency Response (± 10%): 0.5 to 5,000 Hz
  • Frequency Response (± 3 dB): 0.2 to 10,000 Hz
  • Resonance Frequency: 22 kHz

Mounting

  • 1/4-28 Captive Hex Head Screw, 0.046" Diameter Safety Wire Hole

Noise

  • Electrical Noise, Equivalent G (Broadband: 2.5 Hz to 25 kHz): 250 µg
  • Electrical Noise, Equivalent G (Spectral: 10 Hz): 2.5 μg√Hz
  • Electrical Noise, Equivalent G (Spectral: 100 to 1,000 Hz): 1.5 µg/√Hz

Non-Linearity

  • Amplitude Non-Linearity: 1%

Output Impedence

  • Maximum 100 Ω

Power Requirement

  • 18-30 Vdc
  • Current Regulating Diode: 2-10 mA

Range

  • Acceleration Range, Vdc > 22 V: 10 G Peak

Seal Type

  • Hermetic

Sensitivity

  • Base Strain Sensitivity, Maximum
  • Electromagnetic Sensitivity, Equivalent G, Maximum
  • Sensitivity, ± 5%, 25° C (77° F): 100 mV/g
  • Transverse Sensitivity: Maximum 5% of axial

Shock

  • Shock Limit: 5,000 G Peak

Temperature Range

  • -50° to 120° C (-58° to 248° F)

Vibration

  • Vibration Limit: 500 G Peak

Voltage

  • Bias Output Voltage: 12 Vdc