Product Overview
When monitoring slow rotating shafts and fin-fan applications, standard accelerometers often fail to capture low-frequency vibrations accurately. The Bently Nevada 200155-03-05 Low Frequency Trendmaster Pro accelerometer solves this challenge with a specialized design optimized for sub-10 Hz measurements. This rugged sensor delivers reliable data for predictive maintenance in demanding industrial environments.
Technical Specifications
The 200155-03-05 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 of both low and high-frequency vibrations. 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 is 4.7 to 5.5 Vdc, quiescent current is <800 µA, and output bias voltage is +2.5 ± 0.23 Vdc. The accelerometer also measures down to 24.5 mm/s² (2.5 mg).
Industry Applications
This accelerometer excels in fin-fan and slow rotating shaft monitoring, where low-frequency vibration data is critical for detecting bearing wear, imbalance, and misalignment. In chemical plants and refineries, the 200155-03-05 provides early warning of developing faults, reducing unplanned downtime. Its multiple approvals (CSA, ATEX, and IECEx) allow deployment in hazardous areas without additional certification.
Installation & Setup Guidance
Mount the 200155-03-05 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 (03) includes a 3/8-24 to 1/2-20 UNF 1-3/8 inch hex plate stud for versatile installation. Ensure the sensor is securely fastened to avoid resonance interference. Connect the SIG+ and SIG- leads with correct polarity (SIG+ positive with respect to SIG-). Allow 24 hours cure time after mounting if adhesive is used.
Maintenance & Reliability
The 200155-03-05 features hermetic sealing (5×10⁻⁸ atm·cc/s maximum) and operates in 100% relative humidity (condensing, non-submerged). Its temperature range is -40 ºC to +105 ºC (-40 ºF to +221 ºF), with a storage range of -55 ºC to +121 ºC (-67 ºF to +250 ºF). The 316L stainless steel housing and ceramic shear sensing element ensure long-term durability. Periodic inspection of the mounting and cable integrity is recommended to maintain performance.
Compatibility & Integration
This accelerometer is designed for use with the ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05). It integrates seamlessly with Bently Nevada monitoring systems for continuous vibration analysis. The multiple approvals (CSA, ATEX, and IECEx) ensure compatibility with global safety standards.
Selection Guide & Purchasing Advice
Before purchasing the 200155-03-05, verify that your application requires low-frequency monitoring for slow rotating shafts or fin-fan equipment. Confirm the mounting thread (3/8-24 female) and stud option (03) match your installation. SpareTechPLC offers this accelerometer with fast shipping and expert support to help you select the right configuration.
Frequently Asked Questions
Q: What is the sensitivity of the 200155-03-05?
A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q: What is the frequency range of this accelerometer?
A: The frequency range is 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz with ±10% tolerance.
Q: What approvals does the 200155-03-05 have?
A: It has multiple approvals: CSA, ATEX, and IECEx (option 05).
Q: What is the mounting torque specification?
A: The mounting torque is 2.7 to 6.8 N·m (2 to 5 ft·lbf).
Q: Can this accelerometer be used in hazardous areas?
A: Yes, with ATEX and IECEx approvals, it is suitable for hazardous locations.
