Description

The Bently Nevada 330400-01-00 is a high-performance acceleration transducer designed for critical machinery monitoring applications. It provides precise casing acceleration measurements, making it ideal for detecting high-frequency phenomena such as gear mesh frequencies, blade passing, and bearing-related issues. Engineered to meet the requirements of API 670, this sensor ensures reliable performance in demanding industrial environments.

Features

• Sensitivity: 100 mV/g (10.2 mV/m/s2) ±5%
• Amplitude Range: 50g peak
• Frequency Response: 10 Hz to 15,000 Hz (±3 dB)
• Internal Case Isolation to prevent ground loops
• Hermetically sealed for high humidity and corrosive environments
• Rugged stainless steel housing
• Standard 3-pin MIL-C-5015 connector

Applications

• Industrial Gearboxes (gear mesh monitoring and tooth wear detection)
• Centrifugal Compressors (casing vibration and aerodynamic instability)
• Gas and Steam Turbines (structural resonances and blade passing frequencies)
• Large Electric Motors (bearing diagnostics and electrical faults)
• Boiler Feed Pumps

Technical Specifications

Installation Guidelines

• Surface Preparation: The mounting site must be flat, clean, and dry with a minimum diameter of 28.6 mm (1.125 in).
• Surface Finish: For optimal high-frequency response, the central one-inch region should be finished to 32 micro-inch rms.
• Coupling: Apply a light layer of silicone grease (e.g., Dow Corning 340) to the mating surface to ensure acoustic coupling.
• Torque: Tighten the accelerometer to 4.1 N-m (3.0 ft-lb) using a 15/16 inch hex socket.
• Wiring: Use shielded cable assemblies connected via the top-exit 3-pin MIL-C-5015 connector. Ensure the shield is properly grounded at the monitor end to prevent EMI.

FAQ

What is the primary function of the 330400-01-00?

The 330400-01-00 is an accelerometer used to monitor casing vibration on critical rotating machinery, providing data necessary for predictive maintenance and protection systems.

What is the required power supply?

The sensor requires a -24 Vdc constant current power supply to drive its internal charge amplifier.

Is this model suitable for hazardous areas?

This specific variant (330400-01-00) does not carry agency approvals for hazardous locations. Please verify your site requirements before installation.