Bently Nevada 200155-02-05 Low Frequency Trendmaster Pro Accelerometer

Product Overview

When monitoring slow rotating shafts and fin-fan applications demands precision at low frequencies, the Bently Nevada 200155-02-05 Low Frequency Trendmaster Pro Accelerometer delivers reliable vibration data. This accelerometer is engineered for use with ProTIM Option Low Frequency Acceleration-to-Velocity channel types, making it a specialized tool for condition monitoring in challenging environments.

Technical Specifications

The 200155-02-05 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), ensuring reliable high-frequency response. Amplitude linearity is ±2% (1 to 10 g pk), and transverse sensitivity is ≤7%. Settling time is ≤2000 ms within 5% of bias. Excitation voltage is 4.7 to 5.5 Vdc, with quiescent current <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 from -40 °C to +105 °C (-40 °F to +221 °F). Hermetic sealing is rated at 5×10⁻⁸ atm·cc/s maximum. Physical size is 17.5 mm x 45.7 mm (11/16 in x 1.8 in), weight 58 g (2.0 oz) typical, with a 3/8-24 female mounting thread and 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 is 316L stainless steel.

Industry Applications

This accelerometer excels in fin-fan cooling systems and slow rotating shaft monitoring, where low-frequency vibration analysis is critical. Its low frequency response down to 1.5 Hz makes it suitable for large fans, cooling towers, and other rotating machinery operating at reduced speeds. The multiple approvals (CSA, ATEX, and IECEx) allow deployment in hazardous areas without additional certification hurdles.

Installation & Setup Guidance

Mount the 200155-02-05 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 02 provides a 3/8-24 to 3/8-24 UNF 1-3/8 inch hex plate stud. Ensure the mounting surface is clean and flat to achieve proper coupling. Connect excitation voltage between 4.7 and 5.5 Vdc, observing polarity: SIG+ positive with respect to SIG- for acceleration from base to connector. Allow 24 hours cure time for adhesive mounting if applicable. Verify output bias voltage of +2.5 ± 0.23 Vdc during commissioning.

Maintenance & Reliability

Routine inspection should focus on cable integrity and connector cleanliness. The hermetically sealed 316L stainless steel housing protects against moisture and corrosive environments. Periodic verification of bias voltage and sensitivity ensures consistent performance. For safety-rated installations, follow the manufacturer's safety manual for testing intervals. The ceramic shear sensing element provides long-term stability under thermal cycling.

Selection Guide & Purchasing Advice

Before ordering the 200155-02-05, confirm compatibility with your ProTIM channel type (Low Frequency Acceleration-to-Velocity). Verify the mounting stud option (02) matches your installation requirements. For complete technical specifications, please contact BluePLC Industrial. BluePLC Industrial offers genuine Bently Nevada parts with expert support for your condition monitoring needs.