Product Overview
When roller element bearings begin to fail or cavitation effects threaten machinery, the Bently Nevada 200157-23-05 Enveloping Trendmaster Pro accelerometer delivers precise vibration data. Designed for reliability, this sensor helps maintenance engineers detect early signs of wear and prevent unplanned downtime.
Technical Specifications Breakdown
The 200157-23-05 offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a measurement range of ±245 m/s² (±25 g). Its frequency range spans 10 to 10,000 Hz (600 to 600,000 cpm), covering critical machine vibrations. The mounted resonant frequency exceeds 20 kHz, ensuring accurate readings across the operating band. Amplitude linearity is within ±2% (1 to 10 g pk), and transverse sensitivity is ≤7%, providing reliable data even in complex vibration environments.
Industry Applications
This accelerometer excels in monitoring roller element bearings and detecting cavitation effects in pumps and compressors. For example, in a paper mill, the 200157-23-05 can be mounted on a dryer section bearing housing to capture early fault signatures. Its enveloping channel type (-06) enables acceleration-to-velocity conversion, making it easier to interpret bearing condition trends.
Installation & Setup Guidance
Mount the accelerometer using the 3/8-24 female thread with a torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). The mounting stud option 23 provides a 3/8-24 to M16x2.0 adapter with a 1-3/8 inch hex plate stud. Ensure the base contacts the machine surface firmly for optimal signal transfer. Allow 24 hours cure time for any adhesive used. The sensor operates with an excitation voltage of 4.7 to 5.5 Vdc and quiescent current under 800 µA.
Maintenance & Reliability
From a maintenance engineer's perspective, the 200157-23-05 offers long-term reliability with its hermetic sealing (5x10⁻⁸ atm•cc/s maximum) and 316L stainless steel housing. It operates from -40 ºC to +105 ºC (-40 ºF to +221 ºF) and withstands 100% condensing humidity. Regular inspection of the mounting torque and cable connections ensures consistent performance. The ceramic shear sensing element provides stable output over time, reducing calibration drift.
Compatibility & Integration
This accelerometer works with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type (-06). It integrates seamlessly into Bently Nevada monitoring systems. The multiple approvals (CSA, ATEX, and IECEx) allow installation in hazardous areas worldwide.
Selection Guide & Purchasing Advice
Before ordering, verify the mounting thread compatibility and required approvals. The 200157-23-05 includes multiple approvals (code 05). SpareTechPLC offers this model with fast delivery and expert support. Contact our team to confirm availability and lead times.
Frequently Asked Questions
Q1: What is the typical settling time for the 200157-23-05?
The accelerometer settling time is ≤300 ms within 5% of bias voltage.
Q2: Can this sensor be used in high-humidity environments?
Yes, it operates in 100% relative humidity, condensing, non-submerged conditions.
Q3: What is the output bias voltage range?
The output bias voltage is +2.5 ± 0.23 Vdc.
Q4: What is the axial shock limit?
The axial shock limit is 49,050 m/s² pk (5,000 g pk).
Q5: What mounting torque should be applied?
Apply 2.7 to 6.8 N•m (2 to 5 ft•lbf) for proper installation.
