200157-05-CN | Bently Nevada 100 mV/g Enveloping Trendmaster Pro Accelerometer

What Is the 200157-05-CN Bently Nevada Accelerometer?

When unexpected machine failures disrupt production, the 200157-05-CN provides early warning through precise vibration measurement. This Bently Nevada Enveloping Trendmaster Pro accelerometer is designed for roller element bearing analysis and cavitation detection. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle changes that indicate developing faults. The 200157-05-CN operates within a frequency range of 10 to 10,000 Hz, covering critical machine speeds. Its ceramic shear sensing element ensures long-term stability in harsh industrial environments.

Key Features and Performance Metrics

• Sensitivity: 10.2 mV/(m/s²) at 80 Hz for accurate vibration data.
• Measurement range: ±245 m/s² (±25 g) for versatile monitoring.
• Frequency range: 10 to 10,000 Hz (600 to 600,000 cpm).
• Mounted resonant frequency: >20 kHz for high-frequency response.
• Amplitude linearity: ±2% (1 to 10 g pk) ensures reliable readings.
• Transverse sensitivity: ≤7% minimizes cross-axis errors.
• Excitation voltage: 4.7 to 5.5 Vdc, compatible with standard systems.
• Output bias voltage: +2.5 ± 0.23 Vdc for consistent signal baseline.
• Hermetic sealing: 5×10⁻⁸ atm•cc/s maximum prevents moisture ingress.
• Operating temperature range: -40 °C to +105 °C for extreme conditions.

A standout feature is the enveloping channel type, which extracts bearing fault signatures from background noise. This capability reduces false alarms and lowers maintenance costs by catching problems early.

Cost-Effective Condition Monitoring

Investing in the 200157-05-CN minimizes unplanned downtime. Its high sensitivity detects bearing wear and imbalance before catastrophic failure occurs. The wide frequency range covers both low-speed and high-speed machinery, eliminating the need for multiple sensor types. With a settling time under 300 ms, the accelerometer quickly stabilizes after power-up, reducing commissioning delays. The 316L stainless steel housing withstands corrosive environments, extending service life and lowering replacement frequency. For facilities running continuous processes, this translates to significant savings in repair costs and lost production.

Applications and Use Cases

The 200157-05-CN excels in roller element bearing monitoring, where early fault detection prevents costly repairs. It also identifies cavitation effects in pumps and compressors, protecting rotating equipment. In paper mills, steel plants, and refineries, the accelerometer tracks vibration trends to schedule maintenance proactively. Its 100% relative humidity rating allows operation in condensing environments without performance degradation.

Installation and Setup Guidance

Mount the 200157-05-CN using the 3/8-24 female thread with a torque of 2.7 to 6.8 N•m. The mounting stud option (05) includes a 3/8-24 to 1/4-28 UNF hex plate stud for flexible attachment. Apply a thin layer of coupling grease to ensure optimal signal transfer. Route the cable away from high-voltage lines to avoid electrical interference. After installation, verify the output bias voltage is within +2.5 ± 0.23 Vdc to confirm proper operation.

Maintenance and Reliability Tips

Regularly inspect the cable and connector for signs of wear or corrosion. The hermetically sealed design protects internal components, but periodic checks ensure long-term reliability. Clean the mounting surface before reinstallation to maintain accurate readings. For best results, recalibrate the accelerometer annually or per manufacturer guidelines. Following these steps maximizes uptime and extends sensor life.

Frequently Asked Questions

Q: What is the sensitivity of the 200157-05-CN?

A: The sensitivity is 10.2 mV/(m/s²) at 80 Hz, equivalent to 100 mV/g.

Q: What temperature range can this accelerometer handle?

A: It operates from -40 °C to +105 °C (-40 °F to +221 °F).

Q: Is the 200157-05-CN suitable for high-humidity environments?

A: Yes, it withstands 100% relative humidity, condensing and non-submerged.

Q: What is the mounting thread size?

A: The mounting thread is 3/8-24 female, with a recommended torque of 2.7 to 6.8 N•m.

Q: Does this model support enveloping for bearing analysis?

A: Yes, it features an Acceleration-to-Velocity with Acceleration Enveloping channel type.

Product Support and Availability

The 200157-05-CN is in stock and ready to ship from Petro Auto Tech. Our team can assist with technical questions and order processing. Please verify current lifecycle status and availability before ordering to ensure timely delivery.