Bently Nevada 200157-10-05 Enveloping Trendmaster Pro Accelerometer

Product Introduction

When roller element bearings begin to degrade or cavitation effects threaten rotating machinery, how can you detect the earliest signs of failure before catastrophic damage occurs? The Bently Nevada 200157-10-05 Enveloping Trendmaster Pro Accelerometer delivers the precision monitoring needed for these demanding applications. Designed for use with the ProTIM option (Standard Acceleration-to-Velocity with Acceleration Enveloping channel type), this accelerometer excels at identifying bearing faults and cavitation in industrial environments.

Technical Specifications Breakdown

The 200157-10-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a measurement range of ±245 m/s² (±25 g). Its frequency range spans 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), ensuring reliable high-frequency response. Amplitude linearity is within ±2% (1 to 10 g pk), and transverse sensitivity is ≤7%. Settling time (within 5% of bias) is ≤300 ms. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current less than 800 µA and output bias voltage of +2.5 ± 0.23 Vdc. The accelerometer withstands axial shock up to 49,050 m/s² pk (5,000 g pk) and operates across a temperature range of -40 °C to +105 °C (-40 °F to +221 °F). Hermetic sealing is rated at 5x10⁻⁸ atm·cc/s maximum, and it handles 100% relative humidity (condensing, non-submerged). Physical size is 17.5 mm x 45.7 mm (11/16 in x 1.8 in), with a typical weight of 58 g (2.0 oz). Mounting thread is 3/8-24 female, with recommended mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). The sensing element is ceramic with shear geometry, and the housing and connector are 316L stainless steel.

Industry Applications

This accelerometer is specifically designed for roller element bearing monitoring and certain types of cavitation effects. In industries such as oil and gas, power generation, and pulp and paper, early detection of bearing degradation can prevent unplanned downtime and extend equipment life. The 200157-10-05 provides the sensitivity and frequency response needed to capture the characteristic signatures of bearing faults and cavitation, enabling predictive maintenance strategies.

Installation & Setup Guidance

Proper mounting is critical for accurate vibration measurement. The 200157-10-05 uses a 3/8-24 female mounting thread. The mounting stud option 10 (3/8-24 to 1 NPT, 1-3/8 inch hex stud) is included for flexible installation. Apply the recommended mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf) to ensure a secure, repeatable connection. For best results, mount the accelerometer directly on the bearing housing or as close to the bearing as possible. Allow 24 hours cure time for any adhesive used. The accelerometer is polarity-sensitive: SIG+ is positive with respect to SIG- when acceleration is from base to connector.

Maintenance & Reliability

Routine inspection of the accelerometer and its mounting is recommended to ensure consistent performance. Check for any signs of corrosion or damage to the 316L stainless steel housing and connector. Verify that the mounting torque remains within specification. The hermetic seal protects against moisture ingress, but periodic verification of cable integrity and connector cleanliness helps maintain signal quality. Given the harsh environments where this accelerometer operates, regular calibration checks according to manufacturer guidelines are advised.

Selection Guide & Purchasing Advice

When selecting the 200157-10-05, verify that your monitoring system supports the Enveloping Trendmaster Pro channel type and the ProTIM option. The accelerometer requires an excitation voltage of 4.7 to 5.5 Vdc and outputs a signal compatible with standard vibration monitoring systems. For complete technical specifications and to confirm lifecycle status, please contact BluePLC Industrial. BluePLC Industrial is a trusted supplier of Bently Nevada products, offering expert guidance and reliable sourcing for your industrial automation needs.