200157-12-05 | Bently Nevada 10.2 mV/(m/s²) Enveloping Trendmaster Pro Accelerometer

Introduction to the 200157-12-05

When roller element bearing failures threaten uptime, the 200157-12-05 provides reliable enveloping acceleration measurements. This Bently Nevada accelerometer is designed for detecting cavitation effects and early bearing wear. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle vibration changes before they escalate.

Key Features & Technical Specs

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%.
• Measurement range: ±245 m/s² (±25 g).
• Frequency range: 10 to 10,000 Hz (600 to 600,000 cpm).
• 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.

Applications & Use Cases

This accelerometer excels in roller element bearing monitoring and detecting cavitation effects. It is used with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type (-06). The 200157-12-05 helps prevent unplanned downtime by providing early fault detection in rotating machinery.

Installation & Setup

Mount the 200157-12-05 using the 3/8-24 female thread with a mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). The mounting stud option is 12 3/8-24 to 1/4-20 UNC with a 3/4 inch hex stud. Ensure the base-to-connector polarity is SIG+ positive with respect to SIG-.

Maintenance & Reliability

Regular inspection of the accelerometer and its connections ensures consistent performance. The hermetically sealed design (5×10⁻⁸ atm·cc/s maximum) and 316L stainless steel housing provide durability in harsh environments. Operating temperature range is -40°C to +105°C (-40°F to +221°F).

Compatibility & Integration

The 200157-12-05 integrates with Bently Nevada monitoring systems that support acceleration enveloping. It is approved for use in hazardous locations with multiple approvals (CSA, ATEX, and IECEx).

FAQ about 200157-12-05

What is the sensitivity of the 200157-12-05?

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

What is the measurement range?

The measurement range is ±245 m/s² (±25 g).

What approvals does the 200157-12-05 have?

It has multiple approvals: CSA, ATEX, and IECEx.

What is the operating temperature range?

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

What is the mounting thread size?

The mounting thread is 3/8-24 female.

Product Support & Availability

The 200157-12-05 is in stock and ready to ship from Petro Auto Tech. Contact our team for lifecycle status and availability before ordering.