Product Overview
When roller element bearing failures cause unplanned downtime, the Bently Nevada 200157-11-05 Enveloping Trendmaster Pro accelerometer delivers precise vibration data to catch problems early. This sensor is designed for demanding industrial environments where reliability is critical.
Technical Specifications
The 200157-11-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz with ±12% tolerance. Its measurement range spans ±245 m/s² (±25 g) for acceleration and 14.7 mm/s² (1.5 mg) for low-level signals. The frequency range covers 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz with ±10% tolerance. Mounted resonant frequency exceeds 20 kHz (>1200 kcpm). Amplitude linearity is ±2% from 1 to 10 g pk. Transverse sensitivity is ≤7%. Settling time is ≤300 ms within 5% of bias. Excitation voltage is 4.7 to 5.5 Vdc. Quiescent current is <800 µA. Output bias voltage is +2.5 ± 0.23 Vdc. The accelerometer operates from -40 °C to +105 °C (-40 °F to +221 °F). Axial shock limit is 49,050 m/s² pk (5,000 g pk). Sealing is hermetic at 5X10⁻⁸ atm•cc/s maximum. It withstands 100% relative humidity, condensing and non-submerged. Physical size is 17.5 mm x 45.7 mm (11/16 in x 1.8 in). Weight is 58 g (2.0 oz), typical. Mounting thread is 3/8-24 female. Mounting torque is 2.7 to 6.8 N•m (2 to 5 ft•lbf). Sensing element is ceramic with shear geometry. Housing and connector material is 316L stainless steel. Cure time is 24 hours. Storage temperature range is -55 °C to +121 °C (-67 °F to +250 °F).
Industry Applications
Maintenance engineers rely on the 200157-11-05 for monitoring roller element bearings in pumps, motors, compressors, and turbines. Its enveloping channel type (-06) also detects cavitation effects in fluid handling systems. The accelerometer's wide frequency range and high sensitivity enable early fault detection, reducing unexpected failures.
Installation & Setup Guidance
Mount the accelerometer using the 3/8-24 female thread with a torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). Ensure the mounting surface is clean and flat for optimal signal transfer. The mounting stud option 11 provides a 3/8-24 to 1-1/4 NPT adapter with a 1-3/4 inch hex stud. Connect the SIG+ and SIG- leads with correct polarity: SIG+ positive with respect to SIG- for acceleration from base to connector. Allow 24 hours cure time after installation for adhesive bonding if applicable.
Maintenance & Reliability
Inspect the accelerometer periodically for physical damage or corrosion. The 316L stainless steel housing and hermetic sealing protect against harsh environments. Verify output bias voltage remains within +2.5 ± 0.23 Vdc during operation. Replace the sensor if settling time exceeds 300 ms or sensitivity drifts beyond ±12%. Regular calibration checks ensure measurement accuracy.
Compatibility & Integration
The 200157-11-05 works with Bently Nevada ProTIM systems using the Standard Acceleration-to-Velocity with Acceleration Enveloping channel type (-06). It integrates into vibration monitoring networks for continuous machine protection. Multiple approvals (CSA, ATEX, and IECEx) allow use in hazardous locations.
Selection Guide & Purchasing Advice
Before ordering, verify your system's excitation voltage (4.7 to 5.5 Vdc) and mounting thread compatibility. The 200157-11-05 includes multiple approvals for global use. Contact SpareTechPLC for current availability and to confirm lifecycle status. We stock genuine Bently Nevada parts for fast delivery.
Troubleshooting & Common Issues
If output bias voltage deviates from +2.5 ± 0.23 Vdc, check the excitation supply and cable integrity. High noise levels may indicate poor mounting or grounding. Ensure the mounting torque stays within 2.7 to 6.8 N•m to avoid mechanical damage. For enveloping mode issues, verify the ProTIM channel configuration matches the accelerometer type.
