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

Product Introduction

When monitoring slow rotating shafts and fin-fan applications, standard accelerometers often fail to capture low-frequency vibrations accurately. The Bently Nevada 200155-22-05 Low Frequency Trendmaster Pro accelerometer solves this challenge with a tailored design for sub-1.5 Hz measurements. Part of the Trendmaster Pro family, this sensor delivers reliable data for predictive maintenance, helping you avoid costly unplanned downtime. With multiple approvals including CSA, ATEX, and IECEx, it is built for harsh industrial environments.

Technical Specifications Breakdown

The 200155-22-05 features a mounted resonant frequency greater than 20 kHz (>1200 kcpm), ensuring high-frequency noise does not interfere with low-frequency signals. Its quiescent current is less than 800 µA, minimizing power consumption in remote or battery-backed installations. The accelerometer uses a ceramic shear sensing element housed in 316L stainless steel, providing durability and corrosion resistance. The mounting stud option 21 offers a 3/8-24 outer diameter to M6x1 inner diameter with a 1-3/8 inch hex plate stud, simplifying installation on various machinery. These specs directly reduce total cost of ownership by extending sensor life and lowering power requirements.

Industry Applications

This accelerometer excels in fin-fan cooling towers and slow rotating shaft monitoring, such as in paper mills, cement plants, and mining operations. In a fin-fan application, the 200155-22-05 detects early bearing wear and imbalance at speeds below 300 RPM, allowing maintenance teams to schedule repairs during planned outages rather than emergency shutdowns. For slow rotating shafts in agitators or kilns, its low-frequency response captures critical vibration data that standard sensors miss, improving asset reliability and reducing repair costs by up to 30%.

Installation & Setup Guidance

Mount the 200155-22-05 using the provided 3/8-24 female thread and tighten to a torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). Ensure the mounting surface is clean and flat for optimal coupling. The accelerometer requires an excitation voltage of 4.7 to 5.5 Vdc and outputs a signal of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz. For best results, use a shielded cable and avoid routing near high-voltage lines. Proper installation minimizes signal noise and extends sensor life, directly impacting your maintenance budget.

Maintenance & Reliability

With a hermetic seal rating of 5x10⁻⁸ atm·cc/s maximum and 100% relative humidity tolerance (condensing, non-submerged), the 200155-22-05 withstands wet and corrosive environments. Its temperature range spans -40 °C to +105 °C (-40 °F to +221 °F), suitable for outdoor and process applications. Periodic inspection of the cable and connector for damage ensures consistent performance. By choosing this robust accelerometer, you reduce replacement frequency and associated labor costs, improving overall return on investment.

Selection Guide & Purchasing Advice

Before ordering the 200155-22-05, verify that your system supports the 4.7 to 5.5 Vdc excitation and that the mounting thread matches your equipment. This model is ideal for low-frequency monitoring; for higher frequency ranges, consider other Trendmaster Pro variants. BluePLC Industrial stocks this accelerometer with fast shipping and expert support. Contact us to confirm availability and ensure the correct configuration for your application.