200157-23-05 | Bently Nevada 10.2 mV/(m/s²) Enveloping Trendmaster Pro Accelerometer

What Is the 200157-23-05 Bently Nevada Accelerometer?

When roller element bearing faults or cavitation effects threaten machinery uptime, the 200157-23-05 provides reliable vibration data. This Bently Nevada Enveloping Trendmaster Pro Accelerometer features a sensitivity of 10.2 mV/(m/s²) at 80 Hz and a measurement range of ±245 m/s² (±25 g). Designed for use with the ProTIM option, it offers standard acceleration-to-velocity with acceleration enveloping channel type (-06).

Core Specs and Performance Metrics

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%
• Measurement Range: ±245 m/s² (±25 g)
• Frequency Range: 10 to 10,000 Hz (600 to 600,000 cpm)
• Mounted Resonant Frequency: >20 kHz
• Amplitude Linearity: ±2% (1 to 10 g pk)
• Transverse Sensitivity: ≤7%
• Excitation Voltage: 4.7 to 5.5 Vdc
• Output Bias Voltage: +2.5 ± 0.23 Vdc
• Temperature Range: -40 °C to +105 °C (-40 °F to +221 °F)
• Weight: 58 g (2.0 oz), typical

One distinctive spec is the settling time of ≤300 ms, which ensures the accelerometer reaches stable output quickly after power-up, reducing measurement delays in critical monitoring systems.

Real-World Applications

This accelerometer excels in roller element bearing monitoring and detecting certain types of cavitation effects. For example, in a paper mill, the 200157-23-05 can identify early bearing degradation, allowing maintenance teams to schedule repairs before unplanned downtime occurs. Its frequency range from 10 to 10,000 Hz covers both low-speed and high-speed machinery vibrations.

Installation Guide

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 mounting stud option 23 provides a 3/8-24 to M16x2.0 1-3/8 inch hex plate stud. Ensure the mounting surface is clean and flat to achieve optimal coupling. Allow 24 hours cure time for any adhesive if used.

Maintenance and Reliability

Regularly inspect the accelerometer for physical damage and verify its output bias voltage remains within +2.5 ± 0.23 Vdc. The hermetic sealing (5×10⁻⁸ atm•cc/s maximum) protects against moisture, while the 316L stainless steel housing resists corrosion. Operating within the -40 °C to +105 °C temperature range ensures long-term reliability.

Compatibility and Integration

The 200157-23-05 works with Bently Nevada ProTIM systems that accept standard acceleration-to-velocity with acceleration enveloping channel type (-06). Its multiple approvals (CSA, ATEX, and IECEx) allow use in hazardous environments. For integration details, consult the official Bently Nevada documentation.

Common Questions About the 200157-23-05

Q: What is the sensitivity of the 200157-23-05?

A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.

Q: What is the measurement range?

A: The measurement range is ±245 m/s² (±25 g).

Q: What approvals does this model carry?

A: It carries multiple approvals: CSA, ATEX, and IECEx.

Q: What is the operating temperature range?

A: The temperature range is -40 °C to +105 °C (-40 °F to +221 °F).

Q: What mounting thread does the accelerometer use?

A: It uses a 3/8-24 female mounting thread.

Product Support and Availability

The 200157-23-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship.