200157-11-05 | Bently Nevada 100 mV/g Enveloping Trendmaster Pro Accelerometer

Introduction to the Bently Nevada 200157-11-05

When roller element bearing faults or cavitation effects threaten rotating machinery, the 200157-11-05 from Bently Nevada provides precise vibration data. This Enveloping Trendmaster Pro accelerometer is designed for continuous monitoring in harsh industrial environments. With its ceramic shear sensing element and 316L stainless steel housing, it offers durability and accuracy.

Key Features and Technical Specs

• Sensitivity at 80 Hz: 10.2 mV/(m/s²) (100 mV/g), ±12% tolerance.
• Measurement range: ±245 m/s² (±25 g).
• 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 (1 to 10 g pk): ±2%.
• Transverse sensitivity: ≤7%.
• Excitation voltage: 4.7 to 5.5 Vdc.
• Quiescent current: <800 µA.
• Output bias voltage: +2.5 ± 0.23 Vdc.
• Axial shock limit: 49,050 m/s² pk (5,000 g pk).

Applications and Use Cases

This accelerometer excels in monitoring roller element bearings and detecting cavitation effects in pumps and compressors. It is also suitable for general-purpose vibration analysis on rotating equipment where enveloping acceleration-to-velocity processing is required. The multiple approvals (CSA, ATEX, IECEx) make it ideal for hazardous area installations.

Installation and Setup

Mount the 200157-11-05 using the 3/8-24 female thread. Apply a mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf). The mounting stud option 11 (3/8-24 to 1-1/4 NPT, 1-3/4 inch hex stud) is available for adapter requirements. Allow 24 hours cure time for adhesive mounting if used. Ensure the excitation voltage is within 4.7 to 5.5 Vdc.

Maintenance and Reliability

Routine inspection of the accelerometer and its cable connections helps maintain signal integrity. The hermetically sealed design (5x10⁻⁸ atm•cc/s maximum) prevents moisture ingress, supporting reliable operation in condensing humidity environments. The wide temperature range of -40 °C to +105 °C allows use in extreme conditions.

Compatibility and Integration

The 200157-11-05 is designed for use with Bently Nevada ProTIM options, specifically the Standard Acceleration-to-Velocity with Acceleration Enveloping channel type (-06). It provides a SIG+ positive output with respect to SIG- for acceleration from base to connector. Ensure the monitoring system supports the 10.2 mV/(m/s²) sensitivity and 4.7 to 5.5 Vdc excitation.

FAQ about 200157-11-05

What is the sensitivity of the 200157-11-05?

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

What is the temperature range for this accelerometer?

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

What approvals does the 200157-11-05 carry?

It carries multiple approvals: CSA, ATEX, and IECEx (approval code 05).

What is the mounting thread size?

The mounting thread is 3/8-24 female. A stud option (11) provides 3/8-24 to 1-1/4 NPT adapter.

Product Support and Availability

The 200157-11-05 is in stock and ready to ship from Petro Auto Tech. Please verify current lifecycle status and availability with our team before ordering. We are your trusted source for Bently Nevada industrial automation parts.