200157-14-05 | Bently Nevada 10.2 mV/(m/s²) Enveloping Trendmaster Pro Accelerometer

What Makes the Bently Nevada 200157-14-05 Essential for Bearing Protection?

When unexpected bearing failures threaten production uptime, the 200157-14-05 from Bently Nevada provides early warning through enveloping acceleration measurements. This Enveloping Trendmaster Pro Accelerometer is engineered specifically for roller element bearing analysis and certain cavitation effects. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle vibration signatures that indicate developing faults.

Core Specifications of the 200157-14-05

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%
• Measurement Range: ±245 m/s² (±25 g) for acceleration; 14.7 m/s² (1.5 g) for low-range
• Frequency Range: 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz
• Mounted Resonant Frequency: >20 kHz (>1200 kcpm)
• Excitation Voltage: 4.7 to 5.5 Vdc
• Quiescent Current: <800 µA
• 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
• Mounting Thread: 3/8-24 female; mounting torque 2.7 to 6.8 N•m (2 to 5 ft•lbf)

A standout feature is the enveloping channel type, which demodulates high-frequency vibration signals to reveal bearing defect frequencies. This capability makes the 200157-14-05 particularly effective for detecting early-stage bearing degradation before catastrophic failure occurs.

Applications and Use Cases for the 200157-14-05

Industries rely on this accelerometer for continuous monitoring of rotating machinery. In addition to roller element bearings, it handles certain cavitation effects in pumps and compressors. The 200157-14-05 integrates seamlessly with Bently Nevada ProTIM systems, using the standard acceleration-to-velocity with acceleration enveloping channel type (-06). This combination provides actionable data for predictive maintenance programs.

Installation and Mounting Guidelines

Proper mounting is critical for accurate readings. The 200157-14-05 features a 3/8-24 female thread and includes a mounting stud option (14: 3/8-24 to 3/8-24 UNF, 3/4 inch hex stud). Apply a mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf) to ensure optimal coupling. The sensor settles within 300 ms (within 5% of bias) after power-up, allowing quick commissioning.

Routine Maintenance and Reliability

Regular inspection of the sensor and its mounting integrity helps maintain measurement accuracy. The hermetically sealed design (5x10⁻⁸ atm•cc/s maximum leak rate) protects against moisture and contaminants. With 100% relative humidity tolerance (condensing, non-submerged), the 200157-14-05 performs reliably in harsh environments. Periodically verify the output bias voltage remains within +2.5 ± 0.23 Vdc to confirm sensor health.

Compatibility and System Integration

This accelerometer works with Bently Nevada monitoring systems that accept enveloping acceleration inputs. The multiple approvals (CSA, ATEX, and IECEx) ensure compliance in hazardous area installations. For detailed compatibility with specific rack or software versions, consult the official Bently Nevada documentation or contact Petro Auto Tech.

Frequently Asked Questions About the 200157-14-05

Q: What is the sensitivity of the Bently Nevada 200157-14-05?

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

Q: What temperature range can this accelerometer withstand?

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

Q: Does the 200157-14-05 require special mounting torque?

A: Yes, the recommended mounting torque is 2.7 to 6.8 N•m (2 to 5 ft•lbf).

Q: What approvals does the 200157-14-05 carry?

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

Q: How long is the settling time after power-up?

A: The settling time is ≤300 ms (within 5% of bias).

Product Support and Availability

The Bently Nevada 200157-14-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. Contact our team for pricing and delivery options.