200155-06-05 | Bently Nevada 10.2 mV/(m/s²) Low Frequency Accelerometer

What Is the 200155-06-05?

When monitoring slow rotating shafts and fin-fan applications demands reliable low-frequency vibration data, the 200155-06-05 from Bently Nevada provides a robust solution. This Low Frequency Trendmaster Pro Accelerometer is designed to capture acceleration signals from 1.5 to 10,000 Hz (90 to 600,000 cpm), making it ideal for machinery that operates at lower speeds. With a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, it delivers accurate measurements within ±12% tolerance.

Built for harsh industrial environments, the accelerometer features a hermetically sealed 316L stainless steel housing and operates across a temperature range of -40 °C to +105 °C (-40 °F to +221 °F). The unit weighs 58 g (2.0 oz) typical and measures 17.5 mm x 45.7 mm (11/16 in x 1.8 in). It includes multiple approvals (CSA, ATEX, and IECEx) for global use.

Key Features & Technical Specs

• Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, ±12%.
• Measurement Range: ±196 m/s² (±20 g) peak acceleration.
• Frequency Range: 1.5 to 10,000 Hz (90 to 600,000 cpm), ±10% referenced to 80 Hz.
• Mounted Resonant Frequency: Greater than 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.
• Output Bias Voltage: +2.5 ± 0.23 Vdc.
• Quiescent Current: Less than 800 µA.

One distinctive spec is the low-frequency capability down to 1.5 Hz, which enables accurate monitoring of slow-speed machinery where standard accelerometers struggle. This feature directly improves fault detection in fans, cooling towers, and other low-RPM assets.

Applications & Use Cases

The 200155-06-05 excels in fin-fan applications and on slow rotating shafts where vibration frequencies are lower than typical industrial machinery. It is also suitable for monitoring pumps, compressors, and other rotating equipment that operate below 600 RPM. Because of its wide frequency range and hermetically sealed design, it performs reliably in condensing humidity environments up to 100% relative humidity (non-submerged).

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). The mounting stud option 06 provides a 3/8-24 to 1/4 NPT adapter with a 3/4 inch hex stud. Ensure the mounting surface is clean and flat to achieve optimal coupling. After installation, allow a cure time of 24 hours before taking critical measurements. For wiring, connect SIG+ positive with respect to SIG- as defined by the polarity specification (acceleration from base to connector).

Maintenance & Reliability

Routine inspection of the accelerometer and its cabling helps maintain measurement accuracy. Check for physical damage, corrosion, or loose connections periodically. The hermetically sealed design (leak rate ≤5×10⁻⁸ atm·cc/s) protects against moisture ingress, extending service life in harsh environments. Because the unit uses a ceramic shear sensing element, it offers excellent long-term stability. Regular calibration verification against a known reference ensures data integrity over time.

Compatibility & Integration

The 200155-06-05 is designed for use with Bently Nevada ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05). It integrates seamlessly into existing Bently Nevada monitoring systems for continuous vibration analysis. For system integration, refer to the official Bently Nevada documentation to confirm compatibility with your specific monitoring platform.

FAQs about the 200155-06-05

What is the sensitivity of the 200155-06-05?

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

What is the frequency range of this accelerometer?

The frequency range is 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz with ±10% tolerance.

What approvals does the 200155-06-05 carry?

It carries multiple approvals: CSA, ATEX, and IECEx, as indicated by the approval code 05.

What is the operating temperature range?

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

How is the accelerometer mounted?

It uses a 3/8-24 female mounting thread with a recommended torque of 2.7 to 6.8 N·m (2 to 5 ft·lbf).

Product Support & Availability

The 200155-06-05 is in stock and ready to ship from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Contact our team for pricing and lead time details.