Product Overview
When slow rotating shafts and fin-fan applications demand precise vibration monitoring, the Bently Nevada 200155-19-05 Low Frequency Trendmaster Pro accelerometer delivers reliable performance. This sensor is engineered for low-frequency acceleration-to-velocity channel types, making it a critical component for condition monitoring in industrial environments.
Technical Specifications
The 200155-19-05 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 for low-speed machinery. The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), while amplitude linearity remains 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 quiescent current under 800 µA and output bias voltage at +2.5 ± 0.23 Vdc.
Industry Applications
This accelerometer is specifically designed for fin-fan and slow rotating shaft applications where low-frequency vibrations are prevalent. In industries such as petrochemical, power generation, and mining, the 200155-19-05 helps detect early signs of bearing wear or imbalance, preventing costly unplanned downtime. Its robust environmental specifications—including a temperature range of -40 ºC to +105 ºC and 100% relative humidity tolerance—make it suitable for harsh outdoor or process-adjacent installations.
Installation & Setup Guidance
Proper mounting is essential for accurate readings. The 200155-19-05 uses a 3/8-24 female mounting thread and requires a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). The included Quick-Set XDCR adapter (1-inch hex stud) simplifies installation. Ensure the mounting surface is clean and flat to achieve optimal coupling. After installation, allow a 24-hour cure time for the adhesive if used. The hermetic sealing (5X10-8 atm•cc/s) protects against moisture ingress.
Maintenance & Reliability
Routine inspection of the accelerometer and its cabling is recommended to maintain signal integrity. The 200155-19-05 features a ceramic shear sensing element and a 316L stainless steel housing, providing excellent corrosion resistance. Its axial shock limit of 49,050 m/s2 pk (5,000 g pk) ensures durability in high-vibration environments. Regular verification of output bias voltage and quiescent current can help detect early degradation.
Compatibility & Integration
This accelerometer is designed for use with the ProTIM option for Low Frequency Acceleration-to-Velocity channel type (-05). It integrates seamlessly with Bently Nevada monitoring systems, supporting multiple approvals including CSA, ATEX, and IECEx for global deployment. The 200155-19-05 is a direct replacement for earlier Trendmaster Pro models, offering backward compatibility in existing installations.
Selection Guide & Purchasing Advice
Before purchasing, verify that your monitoring system supports the 200155-19-05's excitation voltage (4.7 to 5.5 Vdc) and output bias voltage (+2.5 ± 0.23 Vdc). The mounting stud option (19 = Quick-Set XDCR adapter) and approval option (05 = Multiple Approvals) are factory-configured. SpareTechPLC stocks this accelerometer and can assist with compatibility checks and expedited delivery for critical applications.
Frequently Asked Questions
Q1: What is the primary application of the 200155-19-05?
A1: It is designed for low-frequency vibration monitoring of slow rotating shafts and fin-fan equipment.
Q2: What is the sensitivity of this accelerometer?
A2: The sensitivity is 10.2 mV/(m/s2) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q3: What approvals does the 200155-19-05 carry?
A3: It carries multiple approvals: CSA, ATEX, and IECEx (option 05).
Q4: What is the operating temperature range?
A4: The temperature range is -40 ºC to +105 ºC (-40 ºF to +221 ºF).
Q5: Can this accelerometer be used in hazardous areas?
A5: Yes, the ATEX and IECEx approvals allow use in potentially explosive atmospheres, subject to local regulations.
