Product Overview

The Bently Nevada 200157-07-05 belongs to the Trendmaster Pro family of accelerometers. This sensor is used with ProTIM option Standard Acceleration-to-Velocity with Acceleration Enveloping channel type (-06). The Bently Nevada 200157-07-05 has a 3/8-24 female mounting thread. You get a 3/8-24 to 3/8 NPT stud with 3/4 inch hex configuration. The sensor has multiple approvals including CSA, ATEX, and IECEx. The Bently Nevada 200157-07-05 is made in the U.S.A. for quality assurance.

Technical Specifications

The Bently Nevada 200157-07-05 delivers reliable enveloping vibration monitoring for roller element bearings. All parameters follow the official datasheet.

Electrical Specifications

• Sensitivity at 80 Hz (±12%): 10.2 mV/(m/s²) or 100 mV/g

• Measurement range: ±245 m/s² (±25 g)

• Frequency range referenced to 80 Hz (±10%): 10 to 10,000 Hz (600 to 600,000 cpm)

• Mounted resonant frequency: >20 kHz (>1,200 kcpm)

• Amplitude linearity (1 to 10 g pk): ±2%

• Transverse sensitivity: ≤7%

Power & Output

• Excitation voltage: 4.7 to 5.5 Vdc

• Quiescent current: <800 µA

• Output bias voltage: +2.5 ± 0.23 Vdc

• Polarity (acceleration from base to connector): SIG+ positive with respect to SIG-

• Settling time (within 5% of bias): ≤300 ms

Environmental Specifications

• 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 x 10⁻⁸ atm•cc/s (3.1 x 10⁻⁹ atm•in³/s) maximum

• Relative humidity: 100% relative, condensing, non-submerged

• Adhesive temperature range: -55°C to +121°C (-67°F to +250°F)

• Cure time: 24 hours

Physical Specifications

• Size (hex x height): 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

• Sensing geometry: Shear

• Housing and connector material: 316L stainless steel

Model Code Breakdown

• Manufacturer: Bently Nevada

• Product No.: 200157-07-05

• Mounting stud option (07): 3/8-24 to 3/8 NPT, 3/4 inch hex stud

• Approvals (05): Multiple Approvals (CSA, ATEX, and IECEx)

Installation Guide

Follow these steps to install the Bently Nevada 200157-07-05 correctly.

1. Clean the mounting surface thoroughly before installation.

2. Use the 3/8-24 to 3/8 NPT stud with 3/4 inch hex for mounting.

3. Apply the stud to the sensor using the 3/8-24 female thread.

4. Tighten the sensor assembly to 2.7 to 6.8 N•m (2 to 5 ft•lbf) torque.

5. Connect the sensor leads respecting SIG+ and SIG- polarity.

6. Apply 4.7 to 5.5 Vdc excitation to the Bently Nevada 200157-07-05.

7. Allow up to 300 ms settling time before taking enveloping measurements.

Packing List

This package for the Bently Nevada 200157-07-05 includes the following items.

• Bently Nevada 200157-07-05 enveloping accelerometer (one unit)

• 3/8-24 to 3/8 NPT mounting stud with 3/4 inch hex

• Product documentation and specification sheet

• Protective storage case

Frequently Asked Questions (FAQ)

1. What is the sensitivity of the Bently Nevada 200157-07-05?
The Bently Nevada 200157-07-05 has a sensitivity of 100 mV/g at 80 Hz. The tolerance is ±12 percent for this specification.

2. What is the frequency range of the 200157-07-05 accelerometer?
The frequency range is 10 to 10,000 Hz for the Bently Nevada 200157-07-05. This covers 600 to 600,000 cpm for roller element bearing detection.

3. What is the settling time for the Bently Nevada 200157-07-05?
The settling time is ≤300 ms for the Bently Nevada 200157-07-05. This is measured within 5 percent of bias voltage.

4. What applications is the 200157-07-05 designed for?
The Bently Nevada 200157-07-05 is designed for roller element bearing monitoring. It also detects certain types of cavitation effects in machinery.

5. What is the mounting stud option for the Bently Nevada 200157-07-05?
The mounting stud option is 07 for the Bently Nevada 200157-07-05. This provides a 3/8-24 to 3/8 NPT adapter with a 3/4 inch hex stud configuration.