Bently Nevada 200155-16-05 Low Frequency Trendmaster Pro Accelerometer

Product Introduction

When monitoring slow rotating shafts and fin-fan applications, traditional accelerometers often fail to deliver reliable low-frequency data. The Bently Nevada 200155-16-05 is a Low Frequency Trendmaster Pro accelerometer engineered specifically for these demanding conditions. Part of the trusted Trendmaster Pro series, this sensor provides accurate vibration measurements from 1.5 to 10,000 Hz, making it ideal for machinery that operates at lower rotational speeds. With multiple approvals including CSA, ATEX, and IECEx, the 200155-16-05 meets global safety standards for hazardous environments.

Technical Specifications Breakdown

The 200155-16-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ensuring clear signal output for precise analysis. Its measurement range of ±196 m/s² (±20 g) covers typical vibration levels in industrial machinery. The frequency range spans 1.5 to 10,000 Hz (90 to 600,000 cpm), with a mounted resonant frequency exceeding 20 kHz (>1200 kcpm). Amplitude linearity remains within ±2% from 1 to 10 g pk, while transverse sensitivity is ≤7%. Settling time is ≤2000 ms, and the sensor operates on an excitation voltage of 4.7 to 5.5 Vdc with quiescent current under 800 µA. Output bias voltage is +2.5 ± 0.23 Vdc.

Industry Applications

This accelerometer excels in fin-fan cooling towers and slow rotating shaft machinery, where low-frequency vibration monitoring is critical. In fin-fan applications, the 200155-16-05 detects early bearing wear and imbalance, preventing unplanned downtime. For slow rotating shafts, its frequency response down to 1.5 Hz captures subtle changes that standard accelerometers miss. The robust 316L stainless steel housing and hermetic sealing (5×10⁻⁸ atm·cc/s max) ensure reliable operation in harsh environments.

Installation & Setup Guidance

Mount the 200155-16-05 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 16 provides a 3/8-24 to 1/2-13 UNC adapter with a 3/4 inch hex stud for secure attachment. Ensure the mounting surface is clean and flat to achieve optimal coupling. Allow 24 hours cure time after installation before taking critical measurements. The sensor is polarity-sensitive: SIG+ is positive with respect to SIG- when acceleration is from base to connector.

Maintenance & Reliability

Routine inspection of the mounting integrity and cable connections helps maintain measurement accuracy. The ceramic shear sensing element offers long-term stability, and the hermetic seal protects against moisture ingress. Operating temperature range is -40°C to +105°C (-40°F to +221°F), with a storage range of -55°C to +121°C (-67°F to +250°F). The accelerometer withstands axial shock up to 49,050 m/s² pk (5,000 g pk), ensuring durability in industrial settings. Regular calibration verification every 12 months is recommended.

Selection Guide & Purchasing Advice

When selecting the 200155-16-05, verify that your application requires low-frequency monitoring for slow rotating shafts or fin-fan equipment. Confirm the mounting thread compatibility (3/8-24 female) and ensure the excitation voltage (4.7 to 5.5 Vdc) matches your system. The multiple approvals (CSA, ATEX, IECEx) cover most hazardous area requirements. For complete technical specifications and current availability, contact BluePLC Industrial. Our team can help you confirm compatibility with your existing monitoring system and provide guidance on accessories.