Bently Nevada 200155-09-05 Low Frequency Trendmaster Pro Accelerometer

Product Introduction

When monitoring slow rotating shafts or fin-fan applications, standard accelerometers often fail to capture critical low-frequency vibration data. The Bently Nevada 200155-09-05 Low Frequency Trendmaster Pro accelerometer solves this problem. Designed for use with the ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05), this sensor delivers reliable performance in challenging environments. Manufactured in the U.S.A., this model features a 3/8-24 to 3/4 NPT mounting stud option with a 1-1/4 inch hex stud, ensuring secure installation.

Technical Specifications Breakdown

The 200155-09-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a measurement range of ±196 m/s² (±20 g). Its frequency range spans 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), and amplitude linearity is within ±2% (1 to 10 g pk). Transverse sensitivity is ≤7%. The accelerometer settling time (within 5% of bias) is ≤2000 ms. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current below 800 µA and an output bias voltage of +2.5 ± 0.23 Vdc. Polarity is SIG+ positive with respect to SIG- for acceleration from base to connector. The measurement range in mm/s² is 24.5 (2.5 mg).

Industry Applications

This accelerometer excels in fin-fan and slow rotating shaft monitoring, where low-frequency vibration is a key indicator of bearing wear or imbalance. In petrochemical plants, fin-fan coolers often operate below 600 RPM, making the 200155-09-05 ideal for early fault detection. Similarly, in paper mills or cement plants, slow rotating kilns and dryers benefit from its precise low-frequency response. By catching issues early, users reduce unplanned downtime and extend equipment life, directly improving ROI.

Installation & Setup Guidance

Proper mounting is critical for accurate readings. The 200155-09-05 uses a 3/8-24 female mounting thread with a recommended torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). Ensure the mounting surface is clean and flat to avoid signal distortion. For best results, use the provided 3/8-24 to 3/4 NPT stud adapter. Connect the sensor to a compatible ProTIM module configured for low-frequency acceleration-to-velocity channel type. Avoid overtightening to prevent housing damage.

Maintenance & Reliability

The 200155-09-05 features hermetic sealing (5x10⁻⁸ atm•cc/s maximum) and operates in 100% relative humidity, condensing, non-submerged. Its temperature range spans -40 ºC to +105 ºC (-40 ºF to +221 ºF). The 316L stainless steel housing and ceramic shear sensing element ensure long-term durability. Periodic inspection of the mounting stud and cable connections is recommended. For storage, the temperature range is -55 ºC to +121 ºC (-67 ºF to +250 ºF) with a 24-hour cure time. This robust design minimizes maintenance needs, lowering total cost of ownership.

Selection Guide & Purchasing Advice

Before purchasing the 200155-09-05, verify that your monitoring system supports the low-frequency acceleration-to-velocity channel type. The accelerometer weighs 58 g (2.0 oz) typical and measures 17.5 mm x 45.7 mm (11/16 in x 1.8 in). It carries multiple approvals: CSA, ATEX, and IECEx. For complete technical specifications, contact BluePLC Industrial. Our team can help confirm compatibility with your existing Bently Nevada systems and provide current availability and lifecycle status.