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Model 787A-D2 Class l, Div. 2 Certified Accelerometer

Brand: Wilcoxon Sensing Technologies
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Wilcoxon’s side-exit 100 mV/g broadband sensor is ideal for monitoring machine vibration on a wide range of rotating equipment including motors, pumps, fans, compressors, turbines and generators. A 316L stainless steel casing provides rugged durability for the most extreme environments. The sensing element is housed in a case-isolated Faraday shield, providing maximum protection from ground loops and RF interference. 

The 787A-D2 is classifed for usage in Class I Div. 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
  • Mounts in any orientation
  • Hermetically sealed
  • ESD-protected
  • Reverse wiring protection
  • Class I, Div 2/Zone 2 certified, non-incendive
  • Manufactured in an approved ISO 9001 facility
Wilcoxon’s side-exit 100 mV/g broadband sensor is ideal for monitoring machine vibration on a wide range of rotating equipment including motors, pumps, fans, compressors, turbines and generators. A 316L stainless steel casing provides rugged durability for the most extreme environments. The sensing element is housed in a case-isolated Faraday shield, providing maximum protection from ground loops and RF interference. 

The 787A-D2 is classifed for usage in Class I Div. 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
  • Mounts in any orientation
  • Hermetically sealed
  • ESD-protected
  • Reverse wiring protection
  • Class I, Div 2/Zone 2 certified, non-incendive
  • Manufactured in an approved ISO 9001 facility
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Specifications

Brand

Approvals & Certifications

  • ATEX II 3 G Ex NA IIC T4 Gc -50° C ≤ Tamb ≤ 120° C
  • CE
  • CSA (C,US) Class I, Div. 2, Grade A, B, C, D, Class I, Zone 2 AEx, Ex NA II T4 Tamb: -50° to 120° C

Approvals & Certifications

  • ISO 9001

Circuit Protection

  • ESD Protection
  • Reverse Wiring Protection

Electrical Connectors

  • Cable (J9T2A / J9F)
  • Output Connector: 2-Pin, MIL-C-5015 Style

Element

  • Sensing Element Design: PZT, Shear

Enclosure, Body Material

  • 316L Stainless Steel

Frequency

  • Frequency Response (± 10 %): 1 to 5,000 Hz
  • Frequency Response (± 3 dB): 0.5 to 10,000 Hz
  • Resonance Frequency: 22 kHz

Mounting

  • 1/4-28 Captive Hex Head Screw, 0.046” (1.168 mm) Diameter Safety Wire Hole

Mounting Position

  • Any Orientation

Noise

  • Electrical Noise, Equivalent G (Broadband: 2.5 Hz to 25 kHz): 700 µg
  • Electrical Noise, Equivalent G (Spectral: 10 Hz): 10 µg/√Hz
  • Electrical Noise, Equivalent G (Spectral: 100 to 1,000 Hz): 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 > 25 V: 80 G Peak

Seal Type

  • Hermetic

Sensitivity

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