Bently Nevada 200157-16-05 Enveloping Trendmaster Pro Accelerometer Overview

Product Introduction

When roller element bearings begin to fail or cavitation effects threaten rotating machinery, the Bently Nevada 200157-16-05 provides early, actionable data. This Enveloping Trendmaster Pro accelerometer is engineered for continuous vibration monitoring in harsh industrial environments. As part of the Bently Nevada family, it delivers the precision and durability maintenance engineers rely on to prevent unplanned downtime.

Technical Specifications Breakdown

The 200157-16-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ensuring accurate vibration measurement. Its frequency range spans 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz, covering the critical spectrum for bearing analysis. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), minimizing interference from structural resonances. Amplitude linearity is ±2% from 1 to 10 g pk, and transverse sensitivity is ≤7%, providing reliable data even in complex vibration fields. The accelerometer operates with an excitation voltage of 4.7 to 5.5 Vdc and a quiescent current of less than 800 µA, making it compatible with standard industrial power supplies.

Industry Applications

This accelerometer is specifically designed for roller element bearing monitoring and detecting certain types of cavitation effects. In a typical paper mill, the 200157-16-05 mounts on pump bearings to capture early signs of fatigue or misalignment. For maintenance engineers, its enveloping capability isolates bearing defect frequencies from background noise, allowing precise diagnosis without shutting down the line. The multiple approvals (CSA, ATEX, and IECEx) enable deployment in hazardous areas, such as oil and gas facilities, where safety and reliability are paramount.

Installation & Setup Guidance

Mount the accelerometer using the provided 3/8-24 female thread. Apply a mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf) to ensure proper coupling. The mounting stud option (16 3/8-24 to 1/2-13 UNC, 3/4 inch hex stud) offers flexibility for various bracket configurations. Allow the accelerometer to settle for up to 300 ms after power-up before taking measurements. For best results, mount on a clean, flat surface and use a thin layer of coupling grease to enhance high-frequency response.

Maintenance & Reliability

The hermetically sealed design (5x10⁻⁸ atm·cc/s maximum leak rate) protects against moisture and contaminants, ensuring long-term stability in condensing environments. With a temperature range of -40 °C to +105 °C (-40 °F to +221 °F) and 100% relative humidity tolerance (non-submerged), this accelerometer withstands extreme conditions. Regular inspection of the cable and connector for wear is recommended. The ceramic shear sensing element provides excellent long-term stability, reducing the need for frequent recalibration.

Selection Guide & Purchasing Advice

Before ordering, verify that the 200157-16-05 matches your application requirements: roller element bearing monitoring or cavitation detection. Confirm the mounting thread compatibility and ensure your data acquisition system supports the 4.7 to 5.5 Vdc excitation and IEPE-style output. For complete technical specifications, please contact BluePLC Industrial. Our team can help you verify lifecycle status and availability, ensuring you receive the correct accelerometer for your critical machinery.