200155-23-05 | Bently Nevada 10.2 mV/(m/s²) Low Frequency Trendmaster Pro Accelerometer

What Makes the Bently Nevada 200155-23-05 Ideal for Low-Frequency Monitoring?

When slow rotating shafts and fin-fan applications demand reliable vibration data, the 200155-23-05 from Bently Nevada provides a specialized solution. This Low Frequency Trendmaster Pro Accelerometer is engineered to capture acceleration signals down to 1.5 Hz, making it essential for machinery where standard sensors fall short.

With a sensitivity of 10.2 mV/(m/s²) at 80 Hz and a measurement range of ±196 m/s² (±20 g), the 200155-23-05 delivers accurate readings across a broad spectrum. Its ceramic shear sensing element and 316L stainless steel housing ensure durability in harsh environments, while the hermetically sealed design maintains performance from -40 °C to +105 °C.

Key Features & Technical Specs

• Sensitivity: 10.2 mV/(m/s²) ±12% at 80 Hz.
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm).
• Measurement Range: ±196 m/s² (±20 g) peak.
• 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).
• Weight: 58 g (2.0 oz), typical.
• Mounting Thread: 3/8-24 female.

A standout spec is the 200155-23-05 settling time of ≤2000 ms, which ensures stable readings after power-up — critical for reliable trend data in continuous monitoring systems.

Applications & Use Cases

This accelerometer excels in monitoring fin-fan coolers and slow rotating shafts where low-frequency vibrations dominate. For example, in a petrochemical plant, the 200155-23-05 can detect early bearing wear on large-diameter fans, preventing unplanned downtime. Its wide frequency range also supports general machinery health monitoring in pumps, compressors, and turbines operating at low speeds.

Installation & Setup

Mount the 200155-23-05 using the 3/8-24 female thread with a torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf). The mounting stud option 23 provides a 3/8-24 to M16x2.0 adapter with a 1-3/8 inch hex plate for secure installation. Ensure the base is clean and flat to achieve optimal coupling. The accelerometer is polarity-sensitive: SIG+ is positive with respect to SIG- when acceleration is from base to connector.

Maintenance & Reliability

Routine inspection of the 200155-23-05 includes checking the mounting torque and verifying cable integrity. The hermetically sealed housing (leak rate ≤5×10⁻⁸ atm·cc/s) protects against moisture and contaminants, ensuring long-term reliability in condensing environments up to 100% relative humidity. Regular calibration verification per Bently Nevada guidelines helps maintain measurement accuracy.

Compatibility & Integration

The 200155-23-05 works with ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05). It is designed for use with Bently Nevada monitoring systems that accept 4.7 to 5.5 Vdc excitation and process the accelerometer's output bias voltage of +2.5 ± 0.23 Vdc. For integration details, consult the official Bently Nevada documentation.

FAQs about the 200155-23-05

What is the sensitivity of the 200155-23-05?

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

What temperature range can this accelerometer withstand?

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

What mounting thread does the 200155-23-05 use?

It uses a 3/8-24 female thread, with a mounting stud option for 3/8-24 to M16x2.0.

Is the accelerometer suitable for slow rotating shafts?

Yes, it is specifically designed for fin-fan and slow rotating shaft applications, with a low-frequency response down to 1.5 Hz.

What approvals does the 200155-23-05 carry?

The multiple approvals option includes CSA, ATEX, and IECEx certifications.

Product Support & Availability

The Bently Nevada 200155-23-05 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead time. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.