Bently Nevada 200157-19-05 Enveloping Trendmaster Pro Accelerometer

Product Overview

When roller element bearing failures and cavitation effects threaten machinery uptime, the Bently Nevada 200157-19-05 Enveloping Trendmaster Pro accelerometer delivers reliable vibration monitoring. This sensor is part of the Enveloping Trendmaster Pro family and is designed to capture early signs of bearing degradation and cavitation.

Technical Specifications Breakdown

The 200157-19-05 offers key performance metrics for precise vibration analysis:

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%.
• Measurement Range: ±245 m/s² (±25 g) for acceleration.
• Frequency Range: 10 to 10,000 Hz (600 to 600,000 cpm), referenced to 80 Hz.
• Mounted Resonant Frequency: >20 kHz (>1200 kcpm).
• Amplitude Linearity: ±2% (1 to 10 g pk).
• Transverse Sensitivity: ≤7%.
• Settling Time: ≤300 ms (within 5% of bias).
• Excitation Voltage: 4.7 to 5.5 Vdc.
• Output Bias Voltage: +2.5 ± 0.23 Vdc.
• Quiescent Current: <800 µA.
• Measurement Range (low g): 14.7 mm/s² (1.5 mg).

Environmental robustness includes:

• Axial Shock Limit: 49,050 m/s² pk (5,000 g pk).
• Temperature Range: -40 °C to +105 °C (-40 °F to +221 °F).
• Sealing: Hermetic, 5×10⁻⁸ atm·cc/s maximum.
• Relative Humidity: 100% condensing, non-submerged.

Physical attributes:

• Size: 17.5 mm x 45.7 mm (11/16 in x 1.8 in).
• 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).
• Sensing Element: Ceramic, shear geometry.
• Housing Material: 316L stainless steel.

Industry Applications

Its high sensitivity and wide frequency range enable early fault detection, reducing unplanned downtime. For example, in a paper mill, the 200157-19-05 can identify bearing wear before catastrophic failure, allowing scheduled maintenance.

Installation & Setup Guidance

Mount the accelerometer using the 3/8-24 female thread with a torque of 2.7 to 6.8 N·m. The mounting stud option includes a 19 Quick-Set XDCR adapter with a 1-inch hex stud. Ensure the mounting surface is clean and flat for optimal coupling. Allow 24 hours cure time for any adhesive used. Connect the SIG+ and SIG- leads with proper polarity: SIG+ positive with respect to SIG-.

Maintenance & Reliability

Regularly inspect the accelerometer for physical damage or contamination. The hermetic sealing protects against moisture and corrosive environments. Verify output bias voltage periodically to ensure sensor health. The 316L stainless steel housing withstands harsh industrial conditions, extending service life.

Comparison with Similar Products

| Feature | 200157-19-05 (Enveloping Trendmaster Pro) | Typical Standard Accelerometer |

|---------|-------------------------------------------|-------------------------------|

| Sensitivity | 10.2 mV/(m/s²) | Often 5 mV/(m/s²) or 10 mV/(m/s²) |

| Frequency Range | 10 to 10,000 Hz | 2 to 5,000 Hz typical |

| Hermetic Sealing | Yes (5×10⁻⁸ atm·cc/s) | Often not specified |

| Mounting Thread | 3/8-24 female | Varies (1/4-28 or M6) |

| Multiple Approvals | CSA, ATEX, IECEx | Usually single approval |