200155-14-05 | Bently Nevada 100 mV/g Low Frequency Accelerometer

When Fin-Fan Vibration Monitoring Demands Precision

Slow rotating shafts in fin-fan applications present a unique challenge: standard accelerometers often miss critical low-frequency vibration signals. The 200155-14-05 from Bently Nevada is engineered specifically for this task, offering a frequency range of 1.5 to 10,000 Hz (90 to 600,000 cpm) with a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz. This low frequency Trendmaster Pro accelerometer ensures you capture the data needed to prevent unplanned downtime.

Key Features & Technical Specs of the 200155-14-05

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz (±12%).
• Measurement Range: ±196 m/s² (±20 g) peak.
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm) referenced to 80 Hz (±10%).
• Mounted Resonant Frequency: >20 kHz (>1200 kcpm).
• Amplitude Linearity: ±2% (1 to 10 g pk).
• 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.
• 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.
• Mounting Thread: 3/8-24 female.
• Mounting Torque: 2.7 to 6.8 N·m (2 to 5 ft·lbf).
• Sensing Element: Ceramic, shear geometry.
• Housing Material: 316L stainless steel.

A distinctive spec is the low frequency capability down to 1.5 Hz, which directly addresses the challenge of monitoring slow-speed machinery where traditional accelerometers fail.

Real-World Applications for the 200155-14-05

This accelerometer excels in fin-fan and slow rotating shaft applications. For example, in a petrochemical plant, cooling tower fans often operate below 600 rpm. The 200155-14-05 captures vibration data in this low-frequency range, enabling early detection of bearing wear or imbalance. Its hermetic sealing and 316L stainless steel construction make it suitable for harsh, condensing environments.

Installation & Setup Guidance

Mount the 200155-14-05 using the 3/8-24 female thread with a hex stud option (3/8-24 to 3/8-24 UNF, 3/4 inch hex). Apply a mounting torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf) for reliable coupling. After installation, allow a 24-hour cure time before full operation. The accelerometer works with the ProTIM option for low frequency acceleration-to-velocity channel type (-05).

Maintenance & Reliability

Routine inspection of the mounting integrity and cable connections helps maintain measurement accuracy. The hermetic seal (5×10⁻⁸ atm·cc/s max) protects against moisture ingress, supporting long-term reliability in condensing environments. The ceramic shear sensing element provides stable performance over the -40 °C to +105 °C temperature range.

Compatibility & Integration

The 200155-14-05 is designed for use with Bently Nevada monitoring systems that support low frequency acceleration-to-velocity channel types. It carries multiple approvals: CSA, ATEX, and IECEx, as indicated by the -05 suffix. For specific system compatibility, consult the Bently Nevada documentation or contact Petro Auto Tech.

Frequently Asked Questions about the 200155-14-05

What is the sensitivity of the 200155-14-05?

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) peak.

What temperature range can the 200155-14-05 withstand?

It operates from -40 °C to +105 °C (-40 °F to +221 °F).

What mounting thread does the 200155-14-05 use?

It uses a 3/8-24 female mounting thread.

What approvals does the 200155-14-05 have?

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

Product Support & Availability

The 200155-14-05 is available from Petro Auto Tech. Contact our team for current stock status and lead times. We are your trusted source for Bently Nevada industrial automation parts.