Solving the Challenge of Low-Speed Vibration Monitoring
When monitoring slow rotating shafts in fin-fan applications, standard accelerometers often fail to capture critical low-frequency vibrations. The Bently Nevada 200155-01-05 Low Frequency Trendmaster Pro accelerometer directly addresses this challenge. Designed for fin-fan and slow rotating shaft applications, this sensor delivers reliable data where others fall short. Its low-frequency acceleration-to-velocity channel type ensures accurate readings even at minimal rotational speeds, preventing unexpected downtime and costly repairs.
Technical Specifications Breakdown
The 200155-01-05 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), making it ideal for low-speed machinery. The mounted resonant frequency exceeds 20 kHz, and amplitude linearity is within ±2% (1 to 10 g pk). Transverse sensitivity is ≤7%, and settling time is ≤2000 ms. Excitation voltage ranges from 4.7 to 5.5 Vdc, with a quiescent current under 800 µA and an output bias voltage of +2.5 ± 0.23 Vdc. These specs ensure precise, repeatable measurements in demanding environments.
Industry Applications
Fin-Fan Cooling Systems
Fin-fan units often operate at low rotational speeds, making them difficult to monitor with standard sensors. The 200155-01-05 captures low-frequency vibrations accurately, allowing early detection of bearing wear or imbalance. This prevents catastrophic failures and extends equipment life.
Slow Rotating Shafts
In applications like agitators, mixers, and conveyors, slow shaft speeds challenge conventional accelerometers. The Trendmaster Pro’s low-frequency capability ensures reliable data, enabling predictive maintenance strategies that reduce unplanned downtime.
Installation & Setup Guidance
Mount the 200155-01-05 using the provided 3/8-24 thread or adhesive mount frames. Apply a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf) to ensure proper coupling. For adhesive mounting, allow 24 hours cure time. The sensor’s 316L stainless steel housing and hermetic sealing (5x10⁻⁸ atm•cc/s max) protect against harsh environments. Connect to a ProTIM option with Low Frequency Acceleration-to-Velocity channel type (-05) for optimal performance.
Maintenance & Reliability
Routine inspection of the accelerometer’s mounting and cable connections ensures consistent performance. The sensor operates from -40 ºC to +105 ºC (-40 ºF to +221 ºF) and withstands axial shock up to 49,050 m/s² pk (5,000 g pk). Its ceramic shear sensing element and hermetic seal provide long-term reliability. Regular verification of output bias voltage and quiescent current helps detect early degradation.
Selection Guide & Purchasing Advice
Before purchasing the 200155-01-05, verify the mounting stud option (01 = 3/8-24 thread with adhesive mount frames) and approvals (05 = CSA, ATEX, and IECEx). Ensure compatibility with your ProTIM system. SpareTechPLC offers this accelerometer with fast shipping and expert support. Contact us to confirm availability and lifecycle status before ordering.
Frequently Asked Questions
Q: What is the sensitivity of the 200155-01-05?
A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q: What is the maximum operating temperature?
A: The sensor operates from -40 ºC to +105 ºC (-40 ºF to +221 ºF).
Q: What mounting options are available?
A: The 200155-01-05 includes a 3/8-24 thread and two adhesive mount frames with adhesive.
Q: What approvals does this model have?
A: It has multiple approvals: CSA, ATEX, and IECEx.
Q: What is the measurement range?
A: The measurement range is ±196 m/s² (±20 g).
