Table of Contents

• 200350-02-00-CN Accelerometer Installation Overview
• Hazardous Area Installation Considerations
• Mechanical Mounting Integrity for 200350 Accelerometer
• Intrinsic Safety Wiring and Shielding Rules
• System Configuration and Signal Setup
• Commissioning and Verification Process
• Real Field Installation Case
• Installation FAQ
• Final Engineering Summary

200350-02-00-CN Accelerometer Installation Overview

Bently Nevada 200350-02-00-CN accelerometer installation in hazardous environments requires more than standard mounting. Incorrect grounding or barrier configuration can lead to unstable signals or even safety risks. In many field cases, signal distortion is caused by improper intrinsic safety wiring rather than sensor defects.

This Installation Guide focuses on safe installation, reliable signal transmission, and proper system commissioning for explosion-prone or industrial environments.

Hazardous Area Installation Considerations

• Use certified intrinsic safety barriers between sensor and monitoring system
• Ensure grounding follows single-point grounding principle
• Comply with local hazardous area standards (e.g., Zone 1 / Zone 2)
• Avoid mixing signal ground with power ground

Mechanical Mounting Integrity for 200350 Accelerometer

• Mount directly on rigid bearing housing
• Remove paint and oxidation for metal-to-metal contact
• Torque mounting between 3–5 Nm
• Avoid mounting on thin covers or guards

  // Hazard Installation Logic
  IF Zone = Hazardous THEN
      Install_IS_Barrier();
      Apply_Single_Point_Ground();
  ELSE
      Standard_Installation();
  END_IF;
  

Intrinsic Safety Wiring and Shielding Rules

• Use certified IS cables with shielding
• Ground shield only at safe area side
• Keep cable routing away from high-energy circuits
• Maintain separation between IS and non-IS wiring

System Configuration and Signal Setup

• Configure input type (Acceleration or Velocity)
• Set sensor sensitivity (e.g., 100 mV/g typical)
• Adjust alarm thresholds based on machine baseline
• Verify PLC Controller or monitoring system compatibility

Commissioning and Verification Process

• Measure bias voltage (-8V to -12V typical)
• Verify signal stability under idle condition
• Run machine and monitor vibration trend
• Confirm no signal drift or noise spikes

Real Field Installation Case

In a refinery pump installation (Zone 1), unstable vibration readings were observed:

• Reading fluctuated between 2 mm/s and 9 mm/s
• No mechanical abnormality detected

Investigation showed:

• Improper grounding of intrinsic safety barrier
• Shield connected at both ends

After correction:

• Implemented single-point grounding
• Removed redundant shield connection

Result:

• Signal stabilized at 3.1 mm/s
• No fluctuation observed

Installation FAQ

Do I need an intrinsic safety barrier for this accelerometer?

Yes, if installed in hazardous areas. The barrier protects both signal integrity and safety compliance.

Why is grounding critical in hazardous installations?

Improper grounding can cause signal instability and safety hazards. Always follow single-point grounding rules.

Can I share grounding with other equipment?

No. Signal grounding should be isolated from high-power equipment to avoid interference.

Final Engineering Summary

The Bently Nevada 200350-02-00-CN Installation Guide emphasizes that safe installation and correct grounding are as important as mechanical mounting. Proper intrinsic safety practices ensure both accurate monitoring and system safety.