Product Overview
When a critical rotating machine in a refinery begins exhibiting subtle vibration changes, the Bently Nevada 200150-20-05 General Purpose Trendmaster 2000 or Trendmaster Pro Accelerometer provides the precise data needed to diagnose developing faults before they lead to unplanned downtime. This accelerometer, part of the trusted Trendmaster series, delivers reliable vibration monitoring for general industrial applications.
Manufactured by Bently Nevada and made in the U.S.A., the 200150-20-05 features a 3/8-24 thread mounting stud option with one magnetic mount base. It carries multiple approvals including CSA, ATEX, and IECEx, making it suitable for hazardous environments.
Technical Specifications
The 200150-20-05 accelerometer offers a sensitivity of 10.2 mV/(m/s²) (100 mV/g) at 80 Hz (±12%). Its measurement range spans ±245 m/s² (±25 g) for acceleration, with a frequency range of 10 to 1000 Hz (600 to 60,000 cpm) referenced to 80 Hz (±10%). The mounted resonant frequency exceeds 20 kHz (>1200 kcpm), ensuring accurate readings across the operating band.
Amplitude linearity is ±2% from 1 to 10 g peak, and transverse sensitivity is ≤7%. The accelerometer settles within 5% of bias in ≤300 ms. Excitation voltage ranges from 4.7 to 5.5 Vdc, with quiescent current under 800 µA and output bias voltage of +2.5 ±0.23 Vdc. Polarity is SIG+ positive with respect to SIG- for acceleration from base to connector.
Industry Applications
This accelerometer is designed for general application vibration monitoring on machinery such as pumps, fans, compressors, and motors. In a petrochemical plant, for example, continuous vibration data from the 200150-20-05 helps operators detect bearing wear or imbalance early, enabling condition-based maintenance rather than costly emergency repairs.
Its rugged environmental specifications support use in demanding conditions. The accelerometer withstands axial shock limits of 49,050 m/s² pk (5,000 g pk) and operates across a temperature range of -40 ºC to +105 ºC (-40 ºF to +221 ºF). Hermetic sealing at 5x10⁻⁸ atm•cc/s maximum and 100% relative humidity (condensing, non-submerged) ensure reliability in wet or corrosive atmospheres.
Installation & Setup Guidance
Mount the 200150-20-05 using its 3/8-24 female thread with a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf). The magnetic mount base option simplifies temporary or semi-permanent installations. For permanent setups, ensure the mounting surface is clean, flat, and free of debris to achieve optimal coupling. Connect the accelerometer to a compatible data collector or monitoring system using the appropriate cable. After installation, allow a 24-hour cure time if adhesive mounting is used, and verify the output bias voltage is within the specified range.
Maintenance & Reliability
The 200150-20-05 requires minimal routine maintenance. Periodically inspect the mounting integrity and cable connections. The 316L stainless steel housing and connector material provide excellent corrosion resistance. The ceramic sensing element with shear geometry ensures long-term stability. For maximum reliability, keep the accelerometer within its temperature range of -55 ºC to +121 ºC (-67 ºF to +250 ºF) during storage.
Compatibility & Integration
This accelerometer is designed for use with the ProTIM option standard Acceleration-to-Velocity channel type (-01). It integrates seamlessly with Bently Nevada monitoring systems and data collectors. The 200150-20-05 is a direct replacement for earlier Trendmaster series accelerometers, offering improved specifications and approvals.
Buying Guide & Purchasing Advice
Before purchasing, verify that the 200150-20-05 matches your application requirements: sensitivity, frequency range, and environmental conditions. Confirm the mounting thread (3/8-24 female) and approvals needed (CSA, ATEX, IECEx). SpareTechPLC stocks this accelerometer and can provide current availability and lifecycle status. Contact our team for assistance with compatibility or to discuss replacement options for older models.
Frequently Asked Questions
Q1: What is the sensitivity of the Bently Nevada 200150-20-05 accelerometer?
A1: The sensitivity is 10.2 mV/(m/s²) (100 mV/g) at 80 Hz, with a tolerance of ±12%.
Q2: What is the operating temperature range for the 200150-20-05?
A2: The accelerometer operates from -40 ºC to +105 ºC (-40 ºF to +221 ºF).
Q3: What approvals does the 200150-20-05 carry?
A3: It carries multiple approvals: CSA, ATEX, and IECEx.
Q4: What is the mounting thread size on this accelerometer?
A4: The mounting thread is 3/8-24 female, with a recommended torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf).
Q5: What is the frequency range of the 200150-20-05?
A5: The frequency range is 10 to 1000 Hz (600 to 60,000 cpm), referenced to 80 Hz (±10%).
