200155-16-05 | Bently Nevada 10.2 mV/(m/s²) Low Frequency Accelerometer

Introduction to the Bently Nevada 200155-16-05

When monitoring slow rotating shafts in fin-fan or similar applications demands reliable low-frequency vibration data, the 200155-16-05 from Bently Nevada provides a proven solution. This Low Frequency Trendmaster Pro Accelerometer is engineered for continuous condition monitoring in industrial environments. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle vibration changes that indicate developing faults. The accelerometer is part of the Trendmaster family and works with the ProTIM Option Low Frequency Acceleration-to-Velocity channel type.

Key Features & Technical Specifications

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%.
• Measurement Range: ±196 m/s² (±20 g) for the accelerometer.
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz.
• Excitation Voltage: 4.7 to 5.5 Vdc.
• Output Bias Voltage: +2.5 ± 0.23 Vdc.
• Quiescent Current: <800 µA.
• Temperature Range: -40 °C to +105 °C (-40 °F to +221 °F).
• Sealing: Hermetic, 5×10⁻⁸ atm•cc/s maximum.
• Weight: 58 g (2.0 oz), typical.
• Housing Material: 316L stainless steel.

One distinctive spec is the settling time of ≤2000 ms, which ensures the sensor stabilizes quickly after power-up for accurate readings.

Applications & Use Cases

This accelerometer is specifically designed for fin-fan and slow rotating shaft applications where low-frequency vibration monitoring is critical. It excels in environments where traditional sensors struggle with low-speed machinery. For example, in cooling tower fans, the 200155-16-05 detects bearing wear and imbalance before they cause unplanned downtime. Its wide frequency range also supports general machinery monitoring on pumps, motors, and compressors operating at moderate speeds.

Installation & Setup

Mount the accelerometer 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 16 provides a 3/8-24 to 1/2-13 UNC adapter with a 3/4 inch hex stud. Ensure the mounting surface is clean and flat for optimal coupling. Connect the sensor to a compatible Bently Nevada monitor using the specified excitation voltage range. Allow 24 hours cure time after installation before taking critical measurements.

Maintenance & Reliability

Routine inspection of the accelerometer and its cable connections helps maintain reliable performance. The hermetic sealing protects against moisture and contaminants, supporting long service life in harsh industrial settings. Because the sensor uses a ceramic shear sensing element, it resists transverse sensitivity and maintains accuracy over time. Regular calibration checks per the manufacturer's guidelines ensure measurement integrity.

Compatibility & Integration

The 200155-16-05 is designed for use with Bently Nevada Trendmaster Pro systems and the ProTIM Option Low Frequency Acceleration-to-Velocity channel type. It works with monitors that provide 4.7 to 5.5 Vdc excitation. The sensor outputs a positive signal (SIG+ positive with respect to SIG-) for acceleration from base to connector. For integration details, refer to the official Bently Nevada documentation.

FAQ about 200155-16-05

What is the sensitivity of the 200155-16-05 accelerometer?

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

What is the measurement range of this accelerometer?

The measurement range is ±196 m/s² (±20 g).

What is the operating temperature range?

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

What mounting thread does the 200155-16-05 use?

It uses a 3/8-24 female thread, with a mounting stud option for 3/8-24 to 1/2-13 UNC.

What approvals does this model carry?

The 05 approval option includes multiple approvals: CSA, ATEX, and IECEx.

Product Support & Availability

The Bently Nevada 200155-16-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship for most orders.