Bently Nevada 200157-10-05 Enveloping Trendmaster Pro Accelerometer

Case Study: Solving Bearing Fault Detection Challenges

When a paper mill experienced repeated, costly failures in its roller element bearings, standard vibration monitoring failed to provide early warning. The Bently Nevada 200157-10-05 Enveloping Trendmaster Pro accelerometer was deployed to capture the subtle, high-frequency signatures of bearing degradation. Within weeks, the system detected incipient spalling, allowing planned maintenance during a scheduled outage instead of an emergency shutdown. This case illustrates how the 200157-10-05 transforms bearing and cavitation monitoring.

Product Introduction

The Bently Nevada 200157-10-05 is an Enveloping Trendmaster Pro accelerometer designed specifically for roller element bearing monitoring and detection of certain cavitation effects. Manufactured in the U.S.A., this sensor is used with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type. Its multiple approvals (CSA, ATEX, and IECEx) make it suitable for hazardous industrial environments.

Technical Specifications Breakdown

At +25 °C (+77 °F), the 200157-10-05 delivers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz. It offers a measurement range of ±245 m/s² (±25 g) and a frequency range of 10 to 10,000 Hz (600 to 600,000 cpm). The mounted resonant frequency exceeds 20 kHz (>1200 kcpm). Amplitude linearity is ±2% (1 to 10 g pk), and transverse sensitivity is ≤7%. Settling time is ≤300 ms. Excitation voltage is 4.7 to 5.5 Vdc, with quiescent current less than 800 µA and output bias voltage of +2.5 ± 0.23 Vdc. Axial shock limit is 49,050 m/s² pk (5,000 g pk). Temperature range is -40 °C to +105 °C (-40 °F to +221 °F). Hermetic sealing is 5X10⁻⁸ atm•cc/s maximum. Size is 17.5 mm x 45.7 mm, weight 58 g typical, with 3/8-24 female mounting thread and mounting torque 2.7 to 6.8 N•m. The sensing element is ceramic with shear geometry, and housing is 316L stainless steel.

Industry Applications

The 200157-10-05 excels in roller element bearing monitoring across industries such as pulp and paper, mining, and power generation. Its enveloping capability isolates bearing defect frequencies from background noise, enabling early fault detection. It also addresses cavitation effects in pumps and hydro turbines, where high-frequency vibration signatures indicate fluid dynamic instabilities. The wide frequency range and high shock tolerance make it robust for heavy machinery.

Installation & Setup Guidance

Mount the 200157-10-05 using the provided 3/8-24 female thread. Apply mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf). The mounting stud option is 10 3/8-24 to 1 NPT, 1-3/8 inch hex stud. Ensure the mounting surface is clean and flat for optimal coupling. Connect the sensor to a compatible data acquisition system using appropriate cabling. Allow 24 hours cure time if adhesive mounting is used. Verify output bias voltage after installation to confirm proper operation.

Maintenance & Reliability

Periodically inspect the sensor and cabling for physical damage. The hermetically sealed design (5X10⁻⁸ atm•cc/s max) protects against moisture and contaminants. The 316L stainless steel housing resists corrosion in harsh environments. For long-term reliability, verify that the excitation voltage remains within 4.7 to 5.5 Vdc and that the output bias voltage stays within +2.5 ± 0.23 Vdc. Periodic calibration checks against the 80 Hz reference ensure measurement accuracy.

Selection Guide & Purchasing Advice

Before ordering the 200157-10-05, confirm that your application requires enveloping capability for roller element bearings or cavitation detection. Verify compatibility with your ProTIM option system. The multiple approvals (CSA, ATEX, IECEx) cover most hazardous area requirements. For complete technical specifications, please contact BluePLC Industrial. BluePLC Industrial offers genuine Bently Nevada products with expert support to help you select the right accelerometer for your monitoring needs.