200155-12-05 | Bently Nevada 10.2 mV/(m/s²) Low Frequency Accelerometer

Introduction: Solving Slow-Speed Vibration Challenges

When fin-fan assemblies or slow-rotating shafts demand precise low-frequency vibration data, the 200155-12-05 from Bently Nevada provides a reliable solution. This Low Frequency Trendmaster Pro Accelerometer is engineered for applications where standard sensors miss critical signals below 1.5 Hz. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle vibrations that indicate developing faults.

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.
• Frequency range: 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz.
• 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.

Industry Applications

This accelerometer excels in monitoring fin-fan coolers, slow-rotating shafts, and other low-speed machinery common in oil and gas, power generation, and heavy industrial plants. Its ability to measure down to 1.5 Hz ensures early detection of imbalance, misalignment, or bearing wear. The 200155-12-05 is also suitable for applications requiring multiple hazardous area approvals (CSA, ATEX, and IECEx).

Installation & Mounting

Mount the 200155-12-05 using its 3/8-24 female thread and apply a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). The included mounting stud option (3/8-24 to 1/4-20 UNC, 3/4 inch hex stud) simplifies attachment to common machine surfaces. Ensure the base-to-connector polarity is respected: SIG+ positive with respect to SIG-. After installation, allow a 24-hour cure time for optimal performance.

Maintenance & Reliability

Routine inspection of the sensor and its cable connections helps maintain measurement accuracy. The hermetically sealed 316L stainless steel housing (leak rate <5×10⁻⁸ atm•cc/s) withstands harsh environments, including 100% condensing humidity. With an axial shock limit of 49,050 m/s² (5,000 g pk), the accelerometer resists mechanical shocks common in industrial settings.

FAQs about 200155-12-05

Q: What is the sensitivity of the 200155-12-05?

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

Q: What is the operating temperature range?

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

Q: Does the 200155-12-05 have hazardous area approvals?

A: Yes, it carries multiple approvals including CSA, ATEX, and IECEx.

Q: What is the mounting thread size?

A: The mounting thread is 3/8-24 female, and the included stud option is 3/8-24 to 1/4-20 UNC.

Q: What is the output bias voltage?

A: The output bias voltage is +2.5 ± 0.23 Vdc.

Product Support & Availability

The 200155-12-05 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing, lead times, or technical support. We are your trusted source for Bently Nevada industrial automation parts.