Product Overview
The Bently Nevada 200157-01-05 is an Enveloping Trendmaster Pro Accelerometer designed for continuous vibration monitoring in industrial rotating machinery. This industrial automation module excels at detecting roller element bearing faults and certain types of cavitation effects, providing early warning to prevent costly downtime.
With multiple approvals (CSA, ATEX, and IECEx) and a rugged hermetically sealed 316L stainless steel housing, the 200157-01-05 is built for harsh environments. Its high sensitivity and wide frequency range make it a reliable choice for predictive maintenance programs.
Technical Specifications
All specifications are at +25°C (+77°F) unless otherwise noted.
| 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 |
| Polarity (Acceleration from Base to Connector) |
SIG+ positive with respect to SIG- |
| 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 |
Applications
The 200157-01-05 is specifically engineered for roller element bearing monitoring and detection of cavitation effects. Typical applications include:
- Pumps and compressors in oil & gas facilities
- Motors and gearboxes in manufacturing plants
- Paper mill rollers and steel mill bearings
Its acceleration enveloping capability (used with ProTIM option -06) provides enhanced sensitivity to early-stage bearing defects, allowing maintenance teams to schedule repairs before catastrophic failure.
Installation & Setup
Mount the accelerometer using the 3/8-24 female thread or the included adhesive mount frames (option 01). Apply mounting torque between 2.7 and 6.8 N•m (2 to 5 ft•lbf) to ensure proper coupling. For adhesive mounting, clean the surface and allow the adhesive to cure for 24 hours at temperatures up to +121 ºC (+250 ºF).
Connect the sensor to a compatible ProTIM module using the specified excitation voltage (4.7 to 5.5 Vdc). Ensure polarity is correct: SIG+ positive with respect to SIG-.
Maintenance & Reliability
With a hermetically sealed design and 316L stainless steel construction, the 200157-01-05 withstands harsh industrial environments. The sensor requires minimal maintenance; periodic checks of mounting integrity and cable connections are recommended. Its wide temperature range (-40 ºC to +105 ºC) ensures reliable operation in extreme conditions.
Selection Guide
When ordering, verify the mounting stud option (01 = 3/8-24 thread with adhesive frames) and approvals (05 = CSA, ATEX, IECEx). The 200157-01-05 is an original Bently Nevada part, made in the USA. PLC Source PRO offers genuine units with fast worldwide shipping.