Bently Nevada 200157-12-05 Enveloping Trendmaster Pro Accelerometer

Product Overview

When roller element bearings begin to fail, the Bently Nevada 200157-12-05 Enveloping Trendmaster Pro Accelerometer provides early detection. This sensor is designed specifically for monitoring bearing health and certain cavitation effects, delivering reliable data for predictive maintenance programs. Its robust construction and multiple approvals make it a trusted choice for industrial environments.

Technical Specifications

The 200157-12-05 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). It operates across a frequency range of 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), ensuring accurate readings in demanding applications. Amplitude linearity is within ±2% from 1 to 10 g peak, and transverse sensitivity is ≤7%. The accelerometer settles within 300 ms of bias, with an excitation voltage of 4.7 to 5.5 Vdc and quiescent current below 800 µA. Output bias voltage is +2.5 ± 0.23 Vdc.

Industry Applications

This accelerometer excels in monitoring roller element bearings in pumps, motors, compressors, and fans. Its enveloping capability isolates bearing defect frequencies, enabling early fault detection before catastrophic failure occurs. The sensor also handles certain cavitation effects in fluid handling equipment, making it versatile for process industries.

Installation & Setup Guidance

Mount the 200157-12-05 using the 3/8-24 female thread with a mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). The mounting stud option 12 provides a 3/8-24 to 1/4-20 UNC adapter with a 3/4 inch hex stud. Ensure the mounting surface is clean and flat for optimal coupling. The sensor is hermetically sealed to 5×10⁻⁸ atm·cc/s maximum, suitable for condensing humidity environments.

Maintenance & Reliability

From a maintenance engineer's perspective, the 200157-12-05 requires minimal upkeep. Its ceramic shear sensing element and 316L stainless steel housing provide long-term stability. Periodic inspection of the mounting and cable integrity is recommended. The sensor operates from -40 °C to +105 °C (-40 °F to +221 °F), withstanding axial shock up to 49,050 m/s² pk (5,000 g pk). This durability reduces unplanned downtime and extends service intervals.

Selection Guide & Purchasing Advice

When selecting the 200157-12-05, verify compatibility with your monitoring system, particularly the ProTIM option for standard acceleration-to-velocity with acceleration enveloping. This model carries multiple approvals (CSA, ATEX, and IECEx) for hazardous area use. For complete technical specifications and current availability, contact BluePLC Industrial—your reliable source for Bently Nevada parts.