Bently Nevada 200155-22-05 Low Frequency Trendmaster Pro Accelerometer

Product Overview

When monitoring slow rotating shafts and fin-fan applications, the Bently Nevada 200155-22-05 Low Frequency Trendmaster Pro Accelerometer delivers reliable vibration data. This accelerometer is part of the Trendmaster Pro family and is engineered for low-frequency measurements, making it a key component in predictive maintenance strategies for industrial machinery.

Technical Specifications Breakdown

The 200155-22-05 features a mounted resonant frequency greater than 20 kHz (>1200 kcpm), ensuring accurate readings across its operating range. Its quiescent current is less than 800 µA, indicating low power consumption. The mounting stud option is 21, which includes a 3/8-24 outer diameter to M6x1 inner diameter with a 1-3/8 inch hex plate stud. Approvals include Multiple Approvals (CSA, ATEX, and IECEx), making it suitable for hazardous environments.

Industry Applications

This accelerometer excels in fin-fan applications and slow rotating shafts, where low-frequency vibration monitoring is critical. For example, in cooling tower fans, the 200155-22-05 detects early signs of bearing wear or imbalance, allowing maintenance teams to schedule repairs before unplanned downtime occurs. Its low-frequency response ensures accurate data even at slow rotational speeds.

Installation & Setup Guidance

Mount the 200155-22-05 using the provided 3/8-24 female thread. Apply the recommended mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf) to ensure proper coupling. Use the stud option 21 for secure attachment. Connect the accelerometer to a compatible monitoring system, such as a ProTIM option with Low Frequency Acceleration-to-Velocity channel type (-05). Verify the excitation voltage is between 4.7 and 5.5 Vdc before powering the device.

Maintenance & Reliability

Routine inspection of the 200155-22-05 involves checking the cable and connector for damage, ensuring the mounting stud remains tight, and verifying the output bias voltage remains within +2.5 ± 0.23 Vdc. The hermetically sealed design (5X10-8 atm•cc/s maximum) protects against moisture and contaminants, extending service life in harsh environments.

Selection Guide & Purchasing Advice

Before purchasing the 200155-22-05, confirm that your monitoring system supports the accelerometer's sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz and its measurement range of ±196 m/s² (±20 g). Verify the operating temperature range of -40 ºC to +105 ºC (-40 ºF to +221 ºF) suits your application. For complete technical specifications, please contact BluePLC Industrial. We stock genuine Bently Nevada parts and can advise on compatibility with your existing setup.