3500/04

3500/04 Internal Barriers Description

3500 Internal Barriers are intrinsically safe interfaces that provide explosion protection for transducer systems connected directly to the 3500 Machinery Protection System. These barriers are fully compatible with the 3500 System, ensuring that performance remains uncompromised. They offer a cost-effective and convenient solution for installing transducer systems within hazardous areas.

Key benefits include:

• Integrated Design: Unlike external barriers, the 3500 Internal Barriers are a part of the 3500 System.
• Performance Assurance: No degradation of system performance.
• Hazardous Area Approvals: Compatible with Bently Nevada transducer systems with comprehensive hazardous area certifications.
• Safety Compliance: Components meet both North American and international standards as individual units and as part of a complete system.
• Flexible Upgrading: Standard and internal barrier monitors can coexist in the same 3500 rack. Upgrades are easy by replacing existing I/O modules with internal barrier-compatible ones.

Specifications

Physical Information

Internal Barrier I/O Module

• Dimensions (Height x Width x Depth): 241.3 mm x 24.4 mm x 163.1 mm (9.50 in. x 0.96 in. x 6.42 in.)
• Weight: 0.46 kg (1.01 lb)

Internal Barrier Earthing Module

• Dimensions (Height x Width x Depth): 241 mm x 24.4 mm x 103.1 mm (9.50 in. x 0.96 in. x 4.06 in.)
• Weight: 0.201 kg (0.443 lb.)

Proximity and Acceleration

Applicable to aeroderivative and dynamic pressure:

• Bandwidth: 30 kHz
• Amplitude Accuracy: 3% @ 10 kHz, -15/+10% @ 30 kHz
• Phase Accuracy: -11° @ 10 kHz

Channel Parameters

• Um: 250 V
• Uo: 27.45 V
• Io: 113.24 mA
• Co: 0.086 µF
• Lo: 2.77 mH
• Po: 726.96 mW

Circuit Parameters

• Power (PWR):
  • Uo: 26.25 V
  • Rmin: 237.6 Ω
  • Io: 110.48 mA
• Signal (SIG):
  • Uo: 13.65 V
  • Rmin: 4985 Ω
  • Io: 2.74 mA

Velomitor Sensor

• Amplitude Accuracy: ±1%

Circuit Parameters

• Uo: 26.25 V
• Rmin: 297 Ω
• Io: 88.39 mA

Channel Parameters

• Um: 250 V
• Uo: 26.25 V
• Io: 88.39 mA
• Co: 0.097 µF
• Lo: 4.55 mH
• Po: 580.02 mW

Temperature

• Temperature Accuracy: ±1 °C @ +25 °C, ±15 °C over operating temperature range
• Phase Accuracy: -11° @ 10 kHz

Channel Parameters

• Um: 250 V
• Uo: 7.71 V
• Io: 89.17 mA
• Co: 9.3 µF
• Lo: 4.55 mH
• Po: 132.41 mW

Circuit Parameters

• Channel B:
  • Uo: 5.36 V
  • Rmin: 133.25 Ω
  • Io: 40.23 mA
• Channel C:
  • Uo: 6.51 V
  • Rmin: 133.25 Ω
  • Io: 48.86 mA

Process Variable

Channel Parameters

• Um: 250 V
• Uo: 27.98 V
• Io: 279.34 mA
• Co: 0.083 µF
• Lo: 0.455 mH
• Po: 842.89 mW

Circuit Parameters

• Power (PWR):
  • Uo: 26.78 V
  • Rmin: 297 Ω
  • Io: 90.17 mA
• Signal (SIG):
  • Uo: 9.56 V
  • Rmin: 50.58 Ω
  • Io: 189.01 mA

Learn More

Click here to view the detailed datasheet.