Product Overview
When roller element bearing failures cause unplanned downtime, the Bently Nevada 200157-12-05 Enveloping Trendmaster Pro accelerometer delivers the precise vibration data needed for early detection. This sensor converts acceleration signals into velocity and enveloping outputs, enabling condition monitoring that prevents catastrophic equipment damage and reduces maintenance costs.
Technical Specifications Breakdown
Sensitivity and Measurement Range
The 200157-12-05 provides a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ensuring accurate readings across a measurement range of ±245 m/s² (±25 g). This combination allows detection of both subtle bearing wear and significant vibration events, minimizing false alarms while capturing developing faults.
Frequency Response
With a frequency range of 10 to 10,000 Hz (600 to 600,000 cpm), this accelerometer covers the critical spectrum for rolling element bearing analysis. The mounted resonant frequency exceeds 20 kHz, ensuring reliable data without structural interference.
Environmental Durability
The sensor operates from -40 °C to +105 °C and withstands axial shock up to 49,050 m/s² (5,000 g pk). Hermetic sealing (5×10⁻⁸ atm·cc/s maximum) and 100% condensing humidity tolerance make it suitable for harsh industrial environments, reducing replacement frequency and lifecycle costs.
Industry Applications
Roller Element Bearing Monitoring
Designed specifically for roller element bearing and cavitation detection, the 200157-12-05 uses acceleration enveloping to identify early-stage defects. This proactive approach avoids emergency repairs and extends bearing service life.
Pump and Compressor Protection
In rotating machinery, the accelerometer's ±245 m/s² range and 10.2 mV/(m/s²) sensitivity capture both normal operation and fault conditions. The cost benefit is clear: scheduled maintenance replaces unplanned shutdowns.
Installation & Setup Guidance
Mount the accelerometer 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 12 3/8-24 to 1/4-20 UNC, 3/4 inch hex stud option simplifies retrofit on existing equipment. Ensure the sensing element (ceramic, shear geometry) contacts the measurement surface directly for optimal signal transfer.
Maintenance & Reliability
The 316L stainless steel housing and connector resist corrosion in wet or chemically aggressive environments. With a quiescent current below 800 µA and output bias voltage of +2.5 ± 0.23 Vdc, power consumption remains low. Periodic inspection of the mounting stud and cable connections ensures consistent performance, supporting long-term ROI through reduced sensor replacement costs.
Selection Guide & Purchasing Advice
Verify the application requires acceleration-to-velocity with acceleration enveloping channel type (-06). The multiple approvals (CSA, ATEX, and IECEx) indicate suitability for hazardous locations. SpareTechPLC stocks the 200157-12-05 and can confirm current lifecycle status and availability before ordering.
Frequently Asked Questions
Q: What is the sensitivity of the 200157-12-05?
A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q: What temperature range does this accelerometer support?
A: It operates from -40 °C to +105 °C (-40 °F to +221 °F).
Q: What approvals does the 200157-12-05 carry?
A: It has multiple approvals: CSA, ATEX, and IECEx.
Q: What is the mounting thread size?
A: The mounting thread is 3/8-24 female, with an optional stud adapter.
Q: What is the measurement range?
A: The measurement range is ±245 m/s² (±25 g).
