What Is the Bently Nevada 200155-18-05?
When slow rotating shafts or fin-fan applications demand precise vibration monitoring, the Bently Nevada 200155-18-05 Low Frequency Trendmaster Pro accelerometer delivers reliable performance. This rugged sensor, part of the Trendmaster Pro family, is engineered for low-frequency acceleration-to-velocity measurements. With multiple approvals (CSA, ATEX, and IECEx), it suits hazardous environments. The 200155-18-05 features a 3/8-24 to M8x1 mounting stud and a ceramic shear sensing element in a 316L stainless steel housing.
Key Technical Specifications
The 200155-18-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a measurement range of ±196 m/s² (±20 g). Its frequency range spans 1.5 to 10,000 Hz (90 to 600,000 cpm), referenced to 80 Hz. The mounted resonant frequency exceeds 20 kHz. Amplitude linearity is ±2% from 1 to 10 g pk, and transverse sensitivity is ≤7%. Settling time is ≤2000 ms within 5% of bias. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current <800 µA and output bias voltage of +2.5 ± 0.23 Vdc.
Industry Applications
Fin-fan cooling towers and slow rotating shafts (e.g., in fans, pumps, and compressors) benefit from the 200155-18-05's low-frequency capability. Its rugged design withstands axial shock up to 49,050 m/s² pk (5,000 g pk) and operates from -40 °C to +105 °C (-40 °F to +221 °F). The hermetic sealing (5×10⁻⁸ atm•cc/s max) and 100% condensing humidity tolerance make it ideal for outdoor or washdown environments.
Installation & Setup Guidance
Mount the 200155-18-05 using the 3/8-24 female thread with a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). Ensure the mounting surface is clean and flat for optimal coupling. The stud option (18 = 3/8-24 to M8x1 1-3/8 inch hex plate stud) facilitates installation. Allow 24 hours cure time if adhesive mounting is used. Connect excitation voltage (4.7 to 5.5 Vdc) and verify output bias voltage (+2.5 ± 0.23 Vdc) before operation.
Maintenance & Reliability
Regularly inspect the cable and connector for damage. The 316L stainless steel housing resists corrosion. Check mounting torque periodically, especially in high-vibration environments. The ceramic shear element provides long-term stability. Store the accelerometer within -55 °C to +121 °C (-67 °F to +250 °F) when not in use. Follow manufacturer guidelines for calibration intervals.
Buying Guide & Selection Advice
When ordering the 200155-18-05, verify the mounting stud option and approvals match your application. The "05" suffix indicates multiple approvals (CSA, ATEX, IECEx). Ensure your data acquisition system supports the 4.7 to 5.5 Vdc excitation and accepts the 10.2 mV/(m/s²) sensitivity. SpareTechPLC offers this model with fast shipping and expert support. Contact us for current lifecycle status and availability.
Frequently Asked Questions
Q: What is the sensitivity of the 200155-18-05?
A: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q: Can I use this accelerometer in hazardous areas?
A: Yes, the 200155-18-05 with the "05" approval option includes CSA, ATEX, and IECEx certifications for hazardous locations.
Q: What is the maximum operating temperature?
A: The operating temperature range is -40 °C to +105 °C (-40 °F to +221 °F).
Q: How do I mount the 200155-18-05?
A: Use the 3/8-24 female thread with a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). The included stud adapts to M8x1.
Q: What is the typical weight of this accelerometer?
A: The weight is 58 g (2.0 oz), typical.
