Introduction
When monitoring slow rotating shafts in fin-fan applications, engineers face the challenge of capturing low-frequency vibration data accurately. The Bently Nevada 200155-12-05 Low Frequency Trendmaster Pro accelerometer solves this problem with a measurement range of ±196 m/s² (±20 g) and a frequency range from 1.5 to 10,000 Hz (90 to 600,000 cpm). This sensor delivers reliable performance for condition monitoring in harsh industrial environments.
Technical Specifications Breakdown
The 200155-12-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with ±12% tolerance. Its measurement range covers ±196 m/s² (±20 g) for acceleration and 24.5 mm/s² (2.5 mg) for low-frequency velocity. The frequency response spans 1.5 to 10,000 Hz, referenced to 80 Hz with ±10% tolerance. A mounted resonant frequency above 20 kHz ensures minimal interference. Amplitude linearity remains within ±2% from 1 to 10 g peak, and transverse sensitivity is ≤7%. Settling time is ≤2000 ms within 5% of bias. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current under 800 µA and output bias voltage of +2.5 ± 0.23 Vdc.
Industry Applications
This accelerometer is ideal for fin-fan cooling towers and slow rotating shafts in refineries, power plants, and petrochemical facilities. The 200155-12-05 operates reliably in temperatures from -40 °C to +105 °C (-40 °F to +221 °F) and withstands axial shock limits of 49,050 m/s² pk (5,000 g pk). Its 316L stainless steel housing and hermetic sealing (5x10⁻⁸ atm•cc/s maximum) make it suitable for 100% relative humidity, condensing conditions.
Installation & Setup Guidance
Mount the 200155-12-05 using the 3/8-24 female thread. The mounting stud option is 12 (3/8-24 to 1/4-20 UNC, 3/4 inch hex stud). Apply mounting torque between 2.7 to 6.8 N•m (2 to 5 ft•lbf). Allow 24 hours cure time after installation. Ensure the sensing element (ceramic, shear geometry) is properly aligned. Verify polarity: SIG+ positive with respect to SIG- for acceleration from base to connector.
Maintenance & Reliability
Inspect the accelerometer periodically for physical damage or corrosion. The 200155-12-05 is designed for long-term reliability in demanding environments. Its hermetic seal and stainless steel construction reduce maintenance needs. Regular calibration checks ensure measurement accuracy. Follow manufacturer guidelines for troubleshooting.
Compatibility & Integration
The 200155-12-05 is used with the ProTIM Option Low Frequency Acceleration-to-Velocity channel type (-05). It integrates with Bently Nevada monitoring systems for vibration analysis and condition monitoring. Verify compatibility with your existing system before ordering.
Selection Guide & Purchasing Advice
Before purchasing the 200155-12-05, confirm the mounting thread (3/8-24 female) and stud option (3/8-24 to 1/4-20 UNC). The approval code 05 indicates multiple approvals (CSA, ATEX, and IECEx). Contact SpareTechPLC for current availability and lifecycle status. SpareTechPLC is a reliable supplier of industrial automation parts, ensuring genuine Bently Nevada products.
Frequently Asked Questions
Q: What is the frequency range of the 200155-12-05?
A: The frequency range is 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz.
Q: What is the sensitivity of this accelerometer?
A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with ±12% tolerance.
Q: What temperature range can the 200155-12-05 operate in?
A: It operates from -40 °C to +105 °C (-40 °F to +221 °F).
Q: What approvals does the 200155-12-05 have?
A: It has multiple approvals: CSA, ATEX, and IECEx (code 05).
Q: What is the mounting thread size?
A: The mounting thread is 3/8-24 female, with a stud option of 3/8-24 to 1/4-20 UNC.
