Product Overview
The Bently Nevada 200155-06-05 is a low-frequency Trendmaster Pro accelerometer engineered for reliable vibration monitoring on slow-rotating machinery. This industrial automation module excels in applications such as fin-fan fans and slow-speed shafts, where early fault detection is critical to avoiding costly downtime. With a sensitivity of 10.2 mV/(m/s²) (100 mV/g) and a frequency range down to 1.5 Hz, it captures subtle vibration signatures that standard sensors miss.
Manufactured in the USA, the 200155-06-05 features a 3/8-24 to 1/4 NPT mounting stud and multiple approvals (CSA, ATEX, and IECEx), ensuring compliance in hazardous environments. Its rugged 316L stainless steel housing and hermetic sealing make it suitable for demanding industrial settings.
Key Technical Specifications
All specifications are measured at +25°C (+77°F) unless otherwise noted.
| Parameter |
Value |
| Sensitivity @ 80 Hz (±12%) |
10.2 mV/(m/s²) (100 mV/g) |
| Measurement Range |
±196 m/s² (±20 g) |
| Frequency Range (referenced to 80 Hz, ±10%) |
1.5 to 10,000 Hz (90 to 600,000 cpm) |
| Mounted Resonant Frequency |
>20 kHz (>1200 kcpm) |
| Amplitude Linearity (1 to 10 g pk) |
±2% |
| Transverse Sensitivity |
≤7% |
| Settling Time (within 5% of bias) |
≤2000 ms |
| Excitation Voltage |
4.7 to 5.5 Vdc |
| Quiescent Current |
<800 µA |
| Output Bias Voltage |
+2.5 ± 0.23 Vdc |
| Axial Shock Limit |
49,050 m/s² pk (5,000 g pk) |
| Temperature Range (Operating) |
-40 ºC to +105 ºC (-40 ºF to +221 ºF) |
| Sealing (Hermetic) |
5×10⁻⁸ atm•cc/s (3.1×10⁻⁹ atm•in³/s), maximum |
| Relative Humidity |
100% relative, condensing, non-submerged |
| Size (Hex × Height) |
17.5 mm × 45.7 mm (11/16 in × 1.8 in) |
| 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 |
Applications
The Bently Nevada 200155-06-05 is specifically designed for low-frequency vibration monitoring on equipment such as fin-fan cooling towers and slow-rotating shafts. Its ability to measure down to 1.5 Hz makes it ideal for detecting imbalance, misalignment, and bearing wear in machinery that operates below 600 RPM.
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Fin-Fan Coolers: Monitor fan vibration to prevent structural fatigue and unplanned outages.
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Slow-Speed Shafts: Capture early bearing faults in rotating equipment where traditional accelerometers fail.
By integrating the 200155-06-05 into your condition monitoring program, you gain actionable insights that reduce maintenance costs and extend asset life.
Installation Guidance
Proper mounting is essential for accurate readings. The accelerometer features a 3/8-24 female thread and should be torqued to 2.7–6.8 N•m (2–5 ft•lbf). Ensure the mounting surface is clean, flat, and free of paint or debris. For best results, use a direct stud mount or a mounting stud compatible with the 06 option (3/8-24 to 1/4 NPT, 3/4 inch hex stud).
Position the sensor with the connector facing away from the vibration source to minimize cable strain. After installation, allow the sensor to settle for at least 2 seconds (settling time ≤2000 ms) before taking measurements.
Maintenance & Reliability
Routine inspection of the mounting torque and cable integrity ensures long-term reliability. The hermetically sealed design (5×10⁻⁸ atm•cc/s) protects against moisture and contamination, while the 316L stainless steel housing resists corrosion. Operating temperature limits of -40 ºC to +105 ºC make it suitable for harsh environments. Periodic recalibration is recommended to maintain measurement accuracy.
This sensor’s robust construction minimizes the risk of failure, reducing unplanned downtime and overall lifecycle costs.
Buying Guide
Before purchasing, verify the mounting thread (3/8-24 female) matches your installation. The 200155-06-05 includes the 06 mounting stud option and multiple approvals (CSA, ATEX, IECEx). For integration with your existing monitoring system, confirm compatibility with the ProTIM option Low Frequency Acceleration-to-Velocity channel type (-05).
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