Vibro Meter 204-450-000-001-A2-B21-H05-I1 Proximity Measuring System for Hazardous Areas

Product Introduction

When monitoring rotating machinery in explosive atmospheres, engineers face the challenge of obtaining precise displacement data without compromising safety. The Vibro Meter 204-450-000-001-A2-B21-H05-I1 proximity measuring system addresses this need directly. Manufactured by Meggitt (Vibro-Meter), this system is purpose-built for hazardous environments, combining proven eddy-current technology with intrinsic safety certification.

Technical Specifications Breakdown

The 204-450-000-001-A2-B21-H05-I1 offers several key specifications that define its performance:

Environment (A): 2 = Explosive Ex i – This designation confirms the system is certified for use in explosive atmospheres under the Ex i (intrinsic safety) protection concept. It ensures the equipment cannot ignite a surrounding explosive gas mixture during normal operation or fault conditions.

Sensitivity (B): 21 = 8 mV/µm, 2 mm – The system provides an output of 8 millivolts per micrometer of displacement, with a linear measurement range of 2 mm. This sensitivity is standard for high-resolution vibration and position monitoring in turbomachinery.

Total system length (H): 05 = 5 m – The complete system includes a 5-meter cable between the probe and signal conditioner, offering flexibility for mounting on machinery while maintaining signal integrity.

Installation (I): 1 = Signal conditioner assembled on MA 130 mounting adaptor – The signal conditioner comes pre-assembled on a MA 130 mounting adaptor, simplifying installation and ensuring proper alignment.

Weight: 0.22 Kg – At just 0.22 kg, the system is lightweight and easy to handle during installation.

Industry Applications

This proximity measuring system is widely used in industries where explosive gases or dusts are present. Typical applications include:

Oil & Gas Refineries – Monitoring shaft vibration and axial position of compressors, pumps, and turbines in Zone 1 and Zone 2 hazardous areas.

Chemical Processing Plants – Providing critical displacement feedback for rotating equipment handling volatile chemicals.

Power Generation – Used on steam turbines and gas turbines in environments where hydrogen or natural gas may be present.

In each scenario, the Ex i certification allows the sensor to be installed directly in the hazardous zone without requiring expensive explosion-proof enclosures.

Installation & Setup Guidance

Installing the 204-450-000-001-A2-B21-H05-I1 system is straightforward thanks to the pre-assembled MA 130 mounting adaptor. The adaptor provides a secure mechanical interface between the signal conditioner and the machine casing. Ensure the probe tip is positioned at the correct gap (typically within the linear range) and that the cable is routed away from high-voltage lines to avoid electromagnetic interference. For Ex i installations, verify that the associated barrier or isolator matches the system's intrinsic safety parameters.

Maintenance & Reliability

Routine inspection should focus on the probe tip and cable integrity. Check for any signs of physical damage, corrosion, or contamination on the sensing face. The signal conditioner, sealed within the MA 130 adaptor, requires minimal maintenance under normal conditions. Periodic verification of the system calibration using a known target displacement is recommended to ensure measurement accuracy over time.

Buying Guide

Before purchasing, confirm that the system configuration matches your application requirements: verify the sensitivity (8 mV/µm, 2 mm range), total cable length (5 m), and Ex i certification. Ensure your safety barrier or isolated power supply is compatible with the intrinsic safety loop. For complete technical specifications for the 204-450-000-001-A2-B21-H05-I1, please contact BluePLC Industrial. Our team can help you select the correct system and provide availability information.