200157-16-05 | Bently Nevada 10.2 mV/(m/s2) Enveloping Trendmaster Pro Accelerometer

What Is the 200157-16-05?

When roller element bearings begin to fail or cavitation effects threaten rotating machinery, the 200157-16-05 provides early warning. This Bently Nevada Enveloping Trendmaster Pro Accelerometer captures vibration data with exceptional clarity. It uses a ceramic shear sensing element housed in 316L stainless steel. The unit operates from -40 °C to +105 °C and withstands 100% condensing humidity. Engineers rely on its high sensitivity of 10.2 mV/(m/s2) at 80 Hz for accurate trend analysis.

Key Features & Technical Specs

• Sensitivity at 80 Hz: 10.2 mV/(m/s2) (±12%).
• Measurement range: ±245 m/s2 (±25 g).
• Frequency range: 10 to 10,000 Hz (600 to 600,000 cpm).
• Mounted resonant frequency exceeds 20 kHz.
• Amplitude linearity within ±2% from 1 to 10 g pk.
• Transverse sensitivity ≤7%.
• Excitation voltage: 4.7 to 5.5 Vdc.
• Quiescent current less than 800 µA.
• Output bias voltage: +2.5 ± 0.23 Vdc.
• Sealing: hermetic at 5×10⁻⁸ atm•cc/s maximum.

One distinctive spec is the settling time of ≤300 ms. This ensures the accelerometer reaches stable bias quickly after power-up, reducing measurement delay in critical monitoring loops.

Industry Applications

This accelerometer excels in applications where early fault detection saves downtime. It is designed specifically for roller element bearing monitoring and certain types of cavitation effects in pumps and turbines. The enveloping channel type (-06) extracts acceleration and velocity data, making it ideal for trend analysis in continuous process industries. Many plants use it to detect bearing wear before catastrophic failure occurs.

Installation & Mounting

Mounting is straightforward with a 3/8-24 female thread. Use a mounting stud option 16 (3/8-24 to 1/2-13 UNC, 3/4 inch hex stud). Apply mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf). The accelerometer connects via a standard coaxial cable. Ensure the base-to-connector polarity is correct: SIG+ positive with respect to SIG-. Allow 24 hours cure time for any adhesive mounting if used.

Maintenance & Reliability

Regular inspection of the accelerometer and its cable is essential. Check for physical damage, corrosion, or loose mounting. The hermetic seal ensures long-term reliability in harsh environments. Because the unit operates in condensing humidity, verify that the connector remains dry and clean. Periodic verification of output bias voltage helps detect sensor degradation early.

Compatibility & Integration

The 200157-16-05 works with Bently Nevada ProTIM systems that accept standard acceleration-to-velocity with acceleration enveloping channel type (-06). It is compatible with data collectors and online monitoring systems that accept 10.2 mV/(m/s2) sensitivity. For integration details, refer to the official Bently Nevada documentation or contact Petro Auto Tech.

Common Questions about the 200157-16-05

Q: What is the sensitivity of the 200157-16-05?

A: Sensitivity at 80 Hz is 10.2 mV/(m/s2) (±12%), equivalent to 100 mV/g.

Q: What is the measurement range?

A: The accelerometer measures ±245 m/s2 (±25 g).

Q: What is the operating temperature range?

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

Q: What approvals does this model have?

A: It has multiple approvals: CSA, ATEX, and IECEx.

Q: What is the mounting thread size?

A: The mounting thread is 3/8-24 female.

Product Support & Availability

The 200157-16-05 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. Our team can assist with technical questions and cross-referencing.