200157-03-05 | Bently Nevada 100 mV/g Enveloping Trendmaster Pro Accelerometer

What Makes the 200157-03-05 Essential for Bearing Monitoring?

When unexpected bearing failures cause costly downtime, the 200157-03-05 from Bently Nevada provides the precision needed for early detection. This Enveloping Trendmaster Pro accelerometer is engineered for roller element bearing analysis and certain cavitation effects. With a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, it captures subtle vibration signals that standard sensors might miss.

Key Features & Technical Specs of the 200157-03-05

• Measurement Range: ±245 m/s² (±25 g) for the accelerometer 200157.
• Frequency Range: 10 to 10,000 Hz (600 to 600,000 cpm) referenced to 80 Hz.
• Mounted Resonant Frequency: Greater than 20 kHz (>1200 kcpm).
• Amplitude Linearity: ±2% from 1 to 10 g pk.
• Transverse Sensitivity: ≤7%.
• Settling Time: ≤300 ms within 5% of bias.
• Excitation Voltage: 4.7 to 5.5 Vdc.
• Quiescent Current: Less than 800 µA.
• Output Bias Voltage: +2.5 ± 0.23 Vdc.
• 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.
• Size: 17.5 mm hex x 45.7 mm height (11/16 in x 1.8 in).
• Weight: 58 g (2.0 oz) typical.
• Mounting Thread: 3/8-24 female; mounting stud option 03 is 3/8-24 to 1/2-20 UNF 1-3/8 inch hex plate stud.
• Mounting Torque: 2.7 to 6.8 N·m (2 to 5 ft·lbf).
• Sensing Element: Ceramic, shear geometry.
• Housing Material: 316L stainless steel.
• Approvals: Multiple (CSA, ATEX, and IECEx).

Real-World Applications for the 200157-03-05

In industrial environments, the 200157-03-05 excels at monitoring roller element bearings and detecting cavitation effects. For example, a paper mill using this accelerometer on its dryer rolls can identify early bearing degradation before it leads to unplanned shutdowns. Similarly, pump cavitation in a chemical plant becomes measurable, allowing operators to adjust flow conditions and extend equipment life.

Installation & Mounting Tips

Proper mounting is critical for accurate vibration data. Use the 3/8-24 female thread and apply a mounting torque between 2.7 and 6.8 N·m (2 to 5 ft·lbf). The mounting stud option 03 provides a 3/8-24 to 1/2-20 UNF adapter with a 1-3/8 inch hex plate for secure attachment. Ensure the mounting surface is clean and flat to achieve the specified frequency response.

Maintenance & Reliability

Routine inspection of the accelerometer and its cable connections helps maintain signal integrity. Because the 200157-03-05 operates in temperatures from -40 °C to +105 °C and withstands 100% condensing humidity, it suits harsh environments. Periodic verification of output bias voltage (should be +2.5 ± 0.23 Vdc) confirms the sensor remains within specification.

Compatibility & Integration

This accelerometer works with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type (-06). It is designed for use with Bently Nevada monitoring systems that accept 100 mV/g inputs. For specific system compatibility, consult the official documentation.

FAQ about the 200157-03-05

Q: What is the sensitivity of the 200157-03-05?

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 of this accelerometer?

A: The measurement range is ±245 m/s² (±25 g) for the accelerometer 200157.

Q: What approvals does the 200157-03-05 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: How long does it take for the accelerometer to settle?

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

Product Support & Availability

The 200157-03-05 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and delivery options. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.