Product Overview
The Bently Nevada 200157-22-05 Enveloping Trendmaster Pro Accelerometer is a precision vibration sensor engineered for continuous condition monitoring of rotating machinery. This industrial automation module is specifically designed to detect early-stage faults in roller element bearings and certain types of cavitation effects, helping you avoid unplanned downtime and costly repairs.
With a measurement range of ±245 m/s² (±25 g) and a frequency response from 10 to 10,000 Hz (600 to 600,000 cpm), the 200157-22-05 delivers accurate, real-time data for predictive maintenance programs. Its multiple approvals (CSA, ATEX, and IECEx) make it suitable for hazardous environments, ensuring reliable operation in the most demanding industrial settings.
Technical Specifications
The following specifications are measured at +25°C (+77°F) unless otherwise noted:
| Parameter |
Value |
| Sensitivity @ 80 Hz (±12%) |
10.2 mV/(m/s²) (100 mV/g) |
| Measurement Range (Accelerometer) |
±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 (Operating) |
-40 ºC to +105 ºC (-40 ºF to +221 ºF) |
| 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 × Height) |
17.5 mm × 45.7 mm (11/16 in × 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 (Shear geometry) |
| Housing Material |
316L stainless steel |
Applications & Use Cases
The 200157-22-05 is ideal for vibration monitoring on motors, pumps, fans, compressors, and gearboxes. Its high sensitivity and wide frequency range make it particularly effective for detecting bearing defects and cavitation in rotating equipment.
In a typical predictive maintenance program, this accelerometer provides early warning of bearing degradation, allowing maintenance teams to schedule repairs during planned outages rather than reacting to unexpected failures. The 200157-22-05 also excels in harsh environments where high humidity or temperature extremes are present.
Installation & Setup Guidance
Mount the 200157-22-05 using the 3/8-24 female thread with a mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf). Ensure the mounting surface is flat and clean for optimal frequency response. Connect the sensor to a compatible ProTIM option (Standard Acceleration-to-Velocity with Acceleration Enveloping channel type -06).
For best results, mount the accelerometer directly on the bearing housing or as close as possible to the vibration source. Avoid mounting on thin panels or structures that may resonate, as this can distort readings.
Maintenance & Reliability
This accelerometer features hermetic sealing (5×10⁻⁸ atm•cc/s maximum) and a 316L stainless steel housing, providing excellent resistance to moisture and corrosion. With no moving parts, the 200157-22-05 requires minimal maintenance over its service life.
Periodically inspect the mounting stud and cable for signs of wear or damage. Keep the sensor clean and ensure that the mounting torque remains within the specified range to maintain accurate measurements.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 200157-22-05, verify that your system supports the required excitation voltage (4.7 to 5.5 Vdc) and that the output is compatible with your monitoring equipment. The -22 mounting stud option provides a 3/8-24 to M8×1.25 adapter with a 1-3/8 inch hex plate stud, while the -05 approval code includes CSA, ATEX, and IECEx certifications.
For reliable sourcing, PLC Source PRO offers genuine Bently Nevada parts with competitive pricing and fast shipping. Contact us for availability and lead times.