Bently Nevada 200155-15-05 Low Frequency Trendmaster Pro Accelerometer

Product Overview

When monitoring slow rotating shafts or fin-fan applications, the Bently Nevada 200155-15-05 Low Frequency Trendmaster Pro Accelerometer delivers precise vibration data. This accelerometer, part of the Trendmaster Pro series, is engineered for low-frequency measurements down to 1.5 Hz, making it ideal for detecting early signs of bearing wear or imbalance in equipment operating below 10,000 Hz. With its robust 316L stainless steel housing and hermetic sealing, it withstands harsh industrial environments while maintaining accuracy.

Technical Specifications Breakdown

The 200155-15-05 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), ensuring coverage for low-speed machinery. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), providing a wide usable bandwidth. Amplitude linearity is within ±2% from 1 to 10 g pk, and transverse sensitivity is ≤7%. Settling time is ≤2000 ms, and quiescent current is <800 µA. The output bias voltage is +2.5 ± 0.23 Vdc, with an excitation voltage of 4.7 to 5.5 Vdc.

Industry Applications

This accelerometer excels in fin-fan cooling towers, slow rotating shafts, and large rolling element bearings. In fin-fan applications, where rotational speeds are low and vibration signatures are subtle, the 200155-15-05 captures low-frequency data that standard accelerometers miss. For slow rotating shafts in paper mills or cement plants, its sensitivity and frequency range enable early fault detection, reducing unplanned downtime. Maintenance engineers appreciate its reliability in condensing humidity and extreme temperatures from -40°C to +105°C.

Installation & Setup Guidance

Mount the 200155-15-05 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 (15) provides a 3/8-24 to 3/8-16 UNC adapter with a 3/4-inch hex stud for secure attachment. Ensure the mounting surface is clean and flat to achieve optimal coupling. After installation, allow a 24-hour cure time if using adhesive mounting. Connect the sensor to a compatible ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05) for proper signal conditioning.

Maintenance & Reliability

Regular inspection of the accelerometer and its cable connections is recommended to maintain signal integrity. The hermetic sealing (5x10⁻⁸ atm•cc/s maximum) protects against moisture ingress, making it suitable for condensing environments. The ceramic shear sensing element offers long-term stability and resistance to thermal drift. For continuous monitoring applications, verify the output bias voltage periodically to detect any drift. The 200155-15-05 is designed for minimal maintenance, but routine checks every six months ensure reliable operation in critical assets.

Selection Guide & Purchasing Advice

When selecting the 200155-15-05, confirm compatibility with your existing monitoring system and the required approvals (CSA, ATEX, and IECEx). This model is ideal for low-frequency applications; for higher frequency ranges, consider other Trendmaster Pro variants. BluePLC Industrial offers this accelerometer with verified authenticity and support. Before ordering, verify the current lifecycle status and availability with BluePLC Industrial to ensure timely delivery for your maintenance projects.