200155-03-05 | Bently Nevada 10.2 mV/(m/s²) Low Frequency Accelerometer

What Is the Bently Nevada 200155-03-05?

When slow rotating shafts demand reliable vibration monitoring, the 200155-03-05 from Bently Nevada provides a robust solution. This low frequency Trendmaster Pro accelerometer is designed for fin-fan and similar applications. It offers a sensitivity of 10.2 mV/(m/s²) at 80 Hz and a measurement range of ±196 m/s² (±20 g). The unit operates with an excitation voltage of 4.7 to 5.5 Vdc and a quiescent current of less than 800 µA. Its output bias voltage is +2.5 ± 0.23 Vdc. The accelerometer includes multiple approvals: CSA, ATEX, and IECEx.

Key Features & Technical Specs

• Sensitivity: 10.2 mV/(m/s²) at 80 Hz, ±12%.
• Measurement Range: ±196 m/s² (±20 g) for acceleration; 24.5 mm/s² (2.5 mg) for low range.
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm).
• Mounted Resonant Frequency: >20 kHz (>1200 kcpm).
• Amplitude Linearity: ±2% from 1 to 10 g peak.
• Transverse Sensitivity: ≤7%.
• Settling Time: ≤2000 ms within 5% of bias.
• Excitation Voltage: 4.7 to 5.5 Vdc.
• Quiescent Current: <800 µA.
• Output Bias Voltage: +2.5 ± 0.23 Vdc.

The ceramic shear sensing element ensures stable performance, while the 316L stainless steel housing provides durability in harsh environments.

Applications & Use Cases

This accelerometer excels in monitoring fin-fan assemblies and slow rotating shafts where low frequency vibration is critical. It is ideal for predictive maintenance programs that aim to reduce unplanned downtime. The wide frequency range from 1.5 to 10,000 Hz covers both low-speed and moderate-speed machinery. Its compact size (17.5 mm hex x 45.7 mm height) allows installation in tight spaces.

Installation Guide

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). For the mounting stud option 03, use a 3/8-24 to 1/2-20 UNF 1-3/8 inch hex plate stud. Ensure the base is clean and flat for optimal signal transmission. Allow 24 hours cure time for any adhesive if used.

Maintenance & Reliability

Routine inspection of the accelerometer and its cable connections helps maintain measurement accuracy. The hermetically sealed design (5×10⁻⁸ atm•cc/s maximum leakage) protects against moisture and contaminants. Operating temperature range is -40°C to +105°C (-40°F to +221°F), and the unit withstands axial shock up to 49,050 m/s² pk (5,000 g pk). Regular verification of bias voltage and sensitivity per the manufacturer’s guidelines ensures long-term reliability.

Compatibility & Integration

The 200155-03-05 works with Bently Nevada ProTIM systems using the Low Frequency Acceleration-to-Velocity channel type (-05). It is suitable for integration into condition monitoring networks that require accurate vibration data from slow-speed assets.

Common Questions About the 200155-03-05

Q: What is the sensitivity of the 200155-03-05?

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

Q: What is the frequency range of this accelerometer?

A: The frequency range is 1.5 to 10,000 Hz (90 to 600,000 cpm).

Q: What approvals does the 200155-03-05 have?

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

Q: What is the maximum operating temperature?

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

Q: What is the mounting thread size?

A: The mounting thread is 3/8-24 female.

Product Support & Availability

The Bently Nevada 200155-03-05 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 your maintenance needs.