200155-04-05 | Bently Nevada Low Frequency Trendmaster Pro Accelerometer

What makes the Bently Nevada 200155-04-05 the right choice for low frequency vibration monitoring?

When monitoring slow rotating shafts or fin-fan equipment, standard accelerometers often miss critical low-frequency signals. The 200155-04-05 from Bently Nevada is engineered to capture vibration data from 1.5 Hz to 10,000 Hz, making it ideal for these demanding applications. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz and a measurement range of ±196 m/s², this accelerometer delivers reliable data for predictive maintenance.

Key Features & Technical Specs of the 200155-04-05

• Sensitivity: 10.2 mV/(m/s²) (±12%) at 80 Hz.
• Measurement Range: ±196 m/s² (±20 g).
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm).
• 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.
• Weight: 58 g (2.0 oz), typical.

Unique Insight: The 200155-04-05 features a settling time of ≤2000 ms, ensuring stable readings soon after power-up. This is critical for applications where quick data acquisition is needed after system startup.

Applications & Use Cases for the 200155-04-05

This accelerometer is specifically designed for low-frequency monitoring of slow rotating shafts and fin-fan equipment. For example, in a fin-fan installation, the 200155-04-05 can detect early signs of bearing wear or imbalance that would otherwise go unnoticed. Its ceramic shear sensing element and 316L stainless steel housing provide durability in harsh environments, while the hermetically sealed design ensures reliable operation even in condensing humidity conditions.

Installation & Setup Guide

Mount the 200155-04-05 using the 3/8-24 female thread and apply a mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). The mounting stud option 04 includes a 3/8-24 to 1/4 NPT 1-3/8 inch hex plate stud. Allow 24 hours for cure time after installation. Ensure the excitation voltage is between 4.7 and 5.5 Vdc for proper operation.

Maintenance & Reliability Tips

To maintain accuracy, periodically inspect the accelerometer for physical damage and verify that the mounting torque remains within specification. The hermetically sealed design minimizes environmental ingress, but regular checks of the cable and connector integrity are recommended. Following these practices helps extend service life and reduce unexpected downtime.

Frequently Asked Questions about the 200155-04-05

Q: What is the sensitivity of the 200155-04-05?

A: The sensitivity is 10.2 mV/(m/s²) (±12%) at 80 Hz.

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 is the operating temperature range?

A: The temperature range is -40 °C to +105 °C.

Q: What approvals does the 200155-04-05 have?

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

Q: What is the mounting thread size?

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

Support & Availability

The 200155-04-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. Contact Petro Auto Tech for pricing and lead times.