Bently Nevada 200157-22-05 Enveloping Trendmaster Pro Accelerometer

Product Overview

When roller element bearings begin to fail or cavitation effects compromise machinery, the Bently Nevada 200157-22-05 Enveloping Trendmaster Pro Accelerometer provides early detection. This accelerometer is engineered for condition monitoring applications where traditional vibration sensors may miss subtle fault signatures. Part of the Trendmaster Pro family, the 200157-22-05 delivers reliable data for predictive maintenance programs.

Technical Specifications

The Bently Nevada 200157-22-05 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 accurate readings across the operating band. Amplitude linearity is ±2% from 1 to 10 g peak, and transverse sensitivity is ≤7%. Settling time is ≤300 ms within 5% of bias. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current under 800 µA and output bias voltage of +2.5 ± 0.23 Vdc. The accelerometer withstands axial shock up to 49,050 m/s² peak (5,000 g peak) and operates from -40 ºC to +105 ºC (-40 ºF to +221 ºF). Hermetic sealing is rated at 5X10⁻⁸ atm•cc/s maximum. Physical size is 17.5 mm hex x 45.7 mm height, weighing 58 g (2.0 oz) typical. Mounting thread is 3/8-24 female with a recommended 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 is 316L stainless steel.

Industry Applications

This accelerometer excels in monitoring roller element bearings in pumps, motors, compressors, and turbines. Its enveloping capability isolates bearing defect frequencies from background noise, enabling early fault detection. The 200157-22-05 also detects certain cavitation effects in fluid handling equipment, helping prevent impeller damage and efficiency loss. With multiple approvals (CSA, ATEX, and IECEx), it suits hazardous environments in oil and gas, chemical processing, and power generation.

Installation & Setup Guidance

Mount the accelerometer using the 3/8-24 female thread with the provided stud option (22: 3/8-24 to M8x1.25 1-3/8 inch hex plate stud). Apply mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf) to ensure proper coupling without over-tightening. Connect to a ProTIM option configured for standard acceleration-to-velocity with acceleration enveloping channel type (-06). Allow 24 hours cure time for adhesive mounting if used, and verify output bias voltage is within +2.5 ± 0.23 Vdc after installation.

Maintenance & Reliability

Routine inspection of the accelerometer and its mounting integrity is recommended. The hermetically sealed 316L stainless steel housing protects against moisture and corrosive environments, supporting 100% relative humidity (condensing, non-submerged). Periodic verification of sensitivity and bias voltage ensures consistent performance. Given the robust design, typical maintenance intervals align with the host machine's scheduled outages.

Selection Guide & Purchasing Advice

Before ordering, confirm the mounting stud option and approvals required for your application. The 200157-22-05 includes the 22 stud option and 05 approval package (CSA, ATEX, IECEx). Ensure your monitoring system supports the accelerometer's sensitivity and frequency range. For complete technical specifications and availability, contact BluePLC Industrial.