Product Overview
The Bently Nevada 200157-06-05 is an Enveloping Trendmaster Pro Accelerometer designed for continuous vibration monitoring in industrial rotating machinery. This Industrial Automation Module excels in detecting early-stage faults in roller element bearings and certain types of cavitation effects, helping you avoid unplanned downtime.
Manufactured in the U.S.A., the 200157-06-05 features a mounting stud option of 3/8-24 to 1/4 NPT with a 3/4 inch hex stud (option 06) and carries multiple approvals including CSA, ATEX, and IECEx (option 05). It is used with the ProTIM option for standard acceleration-to-velocity with acceleration enveloping channel type (-06).
Technical Specifications
All specifications are at +25°C (+77°F), unless otherwise noted. Key parameters of the 200157-06-05 include:
| Parameter |
Value |
| Sensitivity @ 80 Hz (±12%) |
10.2 mV/(m/s²) (100 mV/g) |
| Measurement Range (Accelerometer 200157) |
±245 m/s² (±25 g) |
| Frequency Range Referenced to 80Hz (±10%) |
10 to 10,000 Hz (600 to 600,000 cpm) |
| Mounted Resonant Frequency |
>20 kHz (>1200 kcpm) |
| Amplitude Linearity (1 to 10g 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 ºC to +105 ºC (-40 ºF to +221 ºF) |
| Sealing (Hermetic) |
5X10⁻⁸ atm•cc/s (3.1X10⁻⁹ 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 200157-06-05 is specifically designed for roller element bearing monitoring and detection of certain cavitation effects. Typical applications include:
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Pulp and paper mills – monitoring dryer bearings and calendar rolls to prevent catastrophic failure.
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Petrochemical plants – tracking pump and compressor bearings where early fault detection saves thousands in repair costs.
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Power generation – supervising turbine and generator bearings to maximize uptime and extend maintenance intervals.
By catching bearing degradation early, the 200157-06-05 helps shift your strategy from reactive repairs to predictive maintenance, directly reducing downtime and maintenance expenses.
Installation & Mounting
Proper mounting is critical for accurate vibration data. Follow these guidelines:
- Use the 3/8-24 female thread and apply the specified mounting torque of 2.7 to 6.8 N•m (2 to 5 ft•lbf).
- Ensure the mounting surface is flat and clean to achieve maximum frequency response.
- For the stud option 06 (3/8-24 to 1/4 NPT), use a 3/4 inch hex stud and tighten securely.
- Orient the sensor so that the acceleration from base to connector is positive with respect to SIG-.
- Allow the accelerometer to settle for at least 300 ms after power-up before taking readings.
Maintenance & Reliability
The hermetically sealed design (5X10⁻⁸ atm•cc/s maximum) protects the internal electronics from moisture and contaminants, ensuring long-term reliability even in 100% condensing humidity. The 316L stainless steel housing resists corrosion in harsh industrial environments.
Regularly inspect the mounting stud for loosening due to vibration. Re-torque to the specified range if necessary. Check the cable and connector for wear or damage. With proper care, the 200157-06-05 will deliver consistent performance across its -40 ºC to +105 ºC temperature range.
Selection Guide & Purchasing Advice
Before ordering, verify that the 200157-06-05 matches your system's excitation voltage (4.7 to 5.5 Vdc) and that your monitor supports the acceleration enveloping channel type. This model is a direct replacement for standard Trendmaster Pro accelerometers in enveloping applications.
When sourcing critical spares, rely on a trusted supplier. PLC Source PRO offers genuine Bently Nevada parts with fast worldwide shipping. Ensure you have the correct part number 200157-06-05 to avoid compatibility issues.