200150-21-05 | Bently Nevada 100 mV/g Accelerometer Trendmaster Pro

What Is the Bently Nevada 200150-21-05 Accelerometer?

When machinery vibration monitoring demands precision and durability, the 200150-21-05 from Bently Nevada provides a robust solution. This General Purpose Trendmaster 2000 or Trendmaster Pro Accelerometer is engineered for industrial environments where accurate data collection is critical. With a sensitivity of 10.2 mV/(m/s2) (100 mV/g) at 80 Hz, it captures subtle vibration changes that indicate developing faults.

Part of the trusted Bently Nevada family, this accelerometer features a ceramic shear sensing element and 316L stainless steel housing. Its compact size of 17.5 mm x 45.7 mm (11/16 in x 1.8 in) and lightweight design (58 g typical) allow easy installation in tight spaces. The 200150-21-05 is made in the U.S.A. and carries multiple approvals including CSA, ATEX, and IECEx for hazardous area use.

Key Features & Technical Specs of the 200150-21-05

• Sensitivity: 10.2 mV/(m/s2) (±12%) at 80 Hz provides consistent output for vibration analysis.
• Measurement Range: ±245 m/s2 (±25 g) accommodates a wide range of machinery conditions.
• Frequency Range: 10 to 1000 Hz (600 to 60,000 cpm) covers common rotating machinery faults.
• Excitation Voltage: 4.7 to 5.5 Vdc ensures compatibility with standard power supplies.
• Output Bias Voltage: +2.5 ± 0.23 Vdc simplifies signal interpretation.
• Temperature Range: -40 °C to +105 °C (-40 °F to +221 °F) suits harsh environments.
• Axial Shock Limit: 49,050 m/s2 pk (5,000 g pk) withstands severe impacts.
• Hermetic Sealing: 5x10⁻⁸ atm•cc/s maximum prevents moisture ingress.

A standout spec is the mounted resonant frequency >20 kHz, which ensures accurate readings well beyond the operating range, reducing measurement errors from structural resonance.

Real-World Applications for the 200150-21-05

In rotating machinery monitoring, the 200150-21-05 excels at detecting imbalance, misalignment, and bearing wear. It is ideal for general-purpose vibration monitoring in pumps, fans, compressors, and motors. The accelerometer works seamlessly with the ProTIM Option Standard Acceleration-to-Velocity channel type (-01) for velocity data conversion. Its 100% relative humidity rating (condensing, non-submerged) makes it suitable for humid industrial settings.

Installation & Setup Guide

Mount the 200150-21-05 using its 3/8-24 female thread. Apply a mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf) for secure attachment. The mounting stud option 21 includes a 3/8-24 outer diameter to M6x1 inner diameter with a 1-3/8 inch hex plate stud. Allow 24 hours cure time for adhesive mounting if applicable. Ensure the base-to-connector acceleration polarity is positive (SIG+ positive with respect to SIG-).

Maintenance & Reliability Tips

Regularly inspect the 200150-21-05 for physical damage or corrosion, especially in condensing humidity environments. Verify output bias voltage remains within +2.5 ± 0.23 Vdc during operation. The hermetically sealed design minimizes contamination risk, but periodic calibration checks ensure continued accuracy. For critical machinery, schedule annual verification against known vibration sources.

Compatibility & Integration

The 200150-21-05 integrates with Bently Nevada Trendmaster 2000 and Trendmaster Pro systems. It uses standard acceleration-to-velocity channel type (-01) for velocity output. The accelerometer operates with excitation voltage of 4.7 to 5.5 Vdc and quiescent current less than 800 µA. Always verify compatibility with your specific monitoring system before installation.

Frequently Asked Questions about the 200150-21-05

Q: What is the sensitivity of the Bently Nevada 200150-21-05?

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

Q: What temperature range can the 200150-21-05 withstand?

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

Q: What approvals does the 200150-21-05 carry?

A: It has multiple approvals including CSA, ATEX, and IECEx (option 05).

Q: What is the mounting thread size for the 200150-21-05?

A: The mounting thread is 3/8-24 female, with a mounting torque range of 2.7 to 6.8 N•m (2 to 5 ft•lbf).

Q: What is the output bias voltage of the 200150-21-05?

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

Product Support & Availability

The Bently Nevada 200150-21-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. In stock and ready to ship for most orders.