Product Overview
When roller element bearings begin to degrade or cavitation effects threaten rotating machinery, the Bently Nevada 200157-15-05 Enveloping Trendmaster Pro Accelerometer delivers the precise vibration data you need. This industrial automation module, crafted in the U.S.A., is engineered for continuous condition monitoring in demanding environments.
The 200157-15-05 combines a high-sensitivity accelerometer with an enveloping channel type (-06), making it an essential component for predictive maintenance programs. Its robust design and multiple approvals (CSA, ATEX, and IECEx) ensure reliable operation in hazardous and harsh industrial settings.
Key Features & Benefits
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High Sensitivity: 10.2 mV/(m/s²) (100 mV/g) at 80 Hz provides accurate detection of early bearing faults.
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Wide Measurement Range: ±245 m/s² (±25 g) accommodates a broad spectrum of vibration levels.
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Extended Frequency Response: 10 to 10,000 Hz (600 to 600,000 cpm) captures both low-speed and high-speed machinery dynamics.
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Multiple Approvals: CSA, ATEX, and IECEx certification suits global installations.
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Hermetic Sealing: 5x10⁻⁸ atm•cc/s maximum leak rate protects internal components from moisture and contaminants.
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Wide Temperature Range: Operates from -40 °C to +105 °C (-40 °F to +221 °F).
Technical Specifications
All specifications are at +25 °C (+77 °F) unless otherwise noted. The following parameters are directly from the product datasheet for the Bently Nevada 200157-15-05.
| 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 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 |
| Measurement Range (Accelerometer 200157, mm/s²) |
14.7 m/s² (1.5 mg) |
| 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) |
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 |
| Temperature Range (Cure) |
-55 °C to +121 °C (-67 °F to +250 °F) |
| Cure Time |
24 hours |
Industry Applications
The 200157-15-05 excels in monitoring roller element bearings and detecting cavitation effects in pumps and turbines. Its enveloping capability isolates high-frequency impacts, making it ideal for early fault detection.
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Pulp & Paper: Monitor dryer bearings and calendar rolls to prevent unplanned downtime.
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Oil & Gas: Track compressor and pump health in remote or hazardous locations.
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Power Generation: Detect bearing wear in turbines and generators, extending maintenance intervals.
Installation & Setup
Proper mounting is critical for accurate readings. The accelerometer uses a 3/8-24 female thread; 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. For the stud option (15 3/8-24 to 3/8-16 UNC, 3/4 inch hex stud), follow the included guidelines. Position the sensor to align with the bearing load zone for best signal capture.
Maintenance & Reliability
Routine checks should include verifying cable integrity and connector tightness. The hermetically sealed housing protects against moisture, but periodic inspection of the mounting stud is recommended. Operating within the -40 °C to +105 °C range ensures stable performance. The 316L stainless steel construction provides corrosion resistance, reducing replacement frequency and lowering total cost of ownership.
Selection Guide & Purchasing Advice
Before ordering, confirm that the 200157-15-05 matches your system's excitation voltage (4.7 to 5.5 Vdc) and that the output bias voltage (+2.5 Vdc) is compatible with your monitoring equipment. Also verify the mounting thread and stud option. For reliable sourcing, consider PLC Source PRO as a trusted supplier of authentic industrial automation parts.