Wilcoxon’s top-exit broadband sensor is certified for usage in hazardous areas. The high-sensitivity accelerometer offers an interior sensing element capable of producing 500 mV/g outputting clear signals at low vibration levels. The low-end frequency response 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 786-500-D2 is classifed for usage in Class I Division 2/Zone 2 locations where ignitable gases, vapors or liquids are handled, processed or used but are not usually present during normal operation and can only escape through accidental rupture, breakdown or leaks.

Features: 

  • High sensitivity
  • Extended low frequency response
  • Clear signals at low vibration levels
  • Class I, Div 2/Zone 2 certified, non-incendive
  • Hermetically sealed
  • ESD protected
  • Reverse wiring protection
  • Manufactured in an approved ISO 9001 facility
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Agency Approvals

  • ATEX Ex nA II T4 Gc
  • CE
  • CSA (C, US) Class I, Division 2 Groups A, B, C, D

Tests & Certificates

  • ISO 9001

Temperature Range

  • -50° to 120° C (-58° to 248° F)

Sensitivity

  • Base Strain Sensitivity, Maximum: 0.0002 g/μstrain
  • Electromagnetic Sensitivity, Equivalent g, Maximum: 70 µg/gauss
  • Sensitivity, ±5%, 25° C (77° F): 500 mV/g
  • Transverse Sensitivity: Maximum 5% of Axial

Non Linearity

  • Amplitude Nonlinearity: 1%

Vibration

  • Vibration Limit: 500g Peak

Shock

  • Shock Limit: 5,000g Peak

Range

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

Power Requirement

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

Output Impedence

  • Maximum 100 Ohms

Frequency

  • Frequency Response (±10%): 0.5 to 9,000 Hz
  • Frequency Response (±3 dB): 0.2 to 10,000 Hz
  • Frequency Response (±5%): 0.7 to 5,000 Hz
  • Resonance Frequency: 30 kHz

Electrical Connectors

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

Voltage

  • Bias Output Voltage, Nominal: 12 Vdc

Mounting

  • 1/4-28 UNF Tapped Hole

Enclosure/Body Material

  • 316L Stainless Steel

Element

  • Sensing Element Design: PZT, Shear

Seal Type

  • Hermetic

Noise

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