Product Overview
The Bently Nevada 200157-08-05 is an Enveloping Trendmaster Pro Accelerometer designed for industrial automation applications. This Industrial Automation Module provides precise vibration monitoring for roller element bearings and certain types of cavitation effects. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, the 200157-08-05 delivers reliable data for predictive maintenance programs.
Manufactured in the U.S.A., the 200157-08-05 features a mounting stud option of 08 (3/8-24 to 1/2 NPT, 1-inch hex stud) and approvals of 05 (CSA, ATEX, and IECEx). This accelerometer is used with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type (-06).
Technical Specifications
The Bently Nevada 200157-08-05 offers robust performance metrics that ensure accurate vibration analysis in demanding industrial environments.
| Parameter |
Value |
| Sensitivity @ 80 Hz (±12%) |
10.2 mV/(m/s²) (100 mV/g) |
| Measurement Range |
±245 m/s² (±25 g) |
| Frequency Range (referenced to 80 Hz, ±10%) |
10 to 10,000 Hz (600 to 600,000 cpm) |
| Mounted Resonant Frequency |
>20 kHz (>1200 kcpm) |
| Amplitude Linearity (1 to 10 g pk) |
±2% |
| Transverse Sensitivity |
≤7% |
| Settling Time (within 5% of bias) |
≤300 ms |
| Excitation Voltage |
4.7 to 5.5 Vdc |
| Quiescent Current |
<800 µA |
| Output Bias Voltage |
+2.5 ± 0.23 Vdc |
| Axial Shock Limit |
49,050 m/s² pk (5,000 g pk) |
| Temperature Range |
-40 °C to +105 °C (-40 °F to +221 °F) |
| Sealing (Hermetic) |
5×10⁻⁸ atm•cc/s (3.1×10⁻⁹ atm•in³/s), maximum |
| Relative Humidity |
100% relative, condensing, non-submerged |
| Size (Hex x Height) |
17.5 mm x 45.7 mm (11/16 in x 1.8 in) |
| Weight |
58 g (2.0 oz), typical |
| Mounting Thread |
3/8-24 female |
| Mounting Torque |
2.7 to 6.8 N•m (2 to 5 ft•lbf) |
| Sensing Element |
Ceramic |
| Sensing Geometry |
Shear |
| Housing and connector material |
316L stainless steel |
Industry Applications
The Bently Nevada 200157-08-05 excels in monitoring machinery where roller element bearings are critical. Its high-frequency response and enveloping capability make it ideal for detecting early-stage bearing faults and cavitation effects in pumps and turbines.
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Pulp and Paper Mills: Monitor dryer bearings and calendar rolls to prevent unplanned downtime.
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Petrochemical Plants: Track compressor and pump bearings under harsh conditions, leveraging the -40 °C to +105 °C operating range.
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Power Generation: Use on turbine bearings to detect subtle vibration changes that indicate wear, improving maintenance scheduling.
With a measurement range of ±245 m/s² and a frequency range up to 10,000 Hz, the 200157-08-05 captures both low-speed and high-speed machinery vibrations accurately.
Installation & Setup
Proper installation ensures accurate readings. Follow these steps for the Bently Nevada 200157-08-05:
- Prepare a clean, flat mounting surface on the bearing housing.
- Apply a thin layer of coupling agent (if required) to improve contact.
- Thread the 3/8-24 female mounting thread onto the stud, ensuring full engagement.
- Tighten to the recommended torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf) using a torque wrench.
- Connect the cable to the accelerometer, ensuring the connector is clean and secure.
- Verify excitation voltage is within 4.7 to 5.5 Vdc before powering up.
Avoid over-tightening, which can cause measurement errors. The hermetic sealing (5×10⁻⁸ atm•cc/s) protects against moisture ingress.
Maintenance & Reliability
The Bently Nevada 200157-08-05 is built for long service life with a 316L stainless steel housing and ceramic sensing element. To maintain reliability:
- Inspect cables and connectors periodically for damage or corrosion.
- Check mounting torque annually, as thermal cycling can loosen fittings.
- Clean the sensor surface with a soft cloth, avoiding solvents that may damage the seal.
- Monitor output bias voltage; a drift beyond +2.5 ± 0.23 Vdc may indicate internal issues.
Given its robust design, the 200157-08-05 minimizes downtime and reduces total cost of ownership.
Selection Guide
When selecting the Bently Nevada 200157-08-05, verify your system's compatibility with its excitation voltage and frequency range. Confirm that the mounting thread size matches your application. For assistance with integration or to place an order, PLC Source PRO offers genuine parts and expert support.