Description
The 330400-01-00 is an industrial accelerometer designed for critical machinery casing acceleration measurements, such as gear mesh monitoring. This configuration features a 1/4-28 UNF integral mounting stud (Option 01) and no hazardous area agency approvals (Option 00), providing a standardized solution for non-hazardous monitoring environments. The transducer provides an amplitude range of 50 g peak and a sensitivity of 100 mv/g, adhering to the requirements of the American Petroleum Institute (API) Standard 670 for casing accelerometers.
Used primarily to detect malfunctions such as unbalance and misalignment, this accelerometer transmits rotor vibration signals to the bearing housing or machine casing. It is constructed from 316L stainless steel and features a 3-pin MIL-C-5015 receptacle for reliable connection to monitoring systems. The 330400 series is designed for environments where casing acceleration is a primary indicator of machinery health, ensuring compatibility with standard Bently Nevada vibration monitoring instrumentation.
Features
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Mounting Thread: 1/4-28 UNF integral stud (Option 01)
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Agency Approval: None (Option 00)
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Sensitivity: 100 mv/g
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Acceleration Range: 50 g peak (10 Hz to 15 kHz)
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Frequency Response: 10 Hz to 15 kHz (+/- 3 dB); 30 Hz to 10 kHz (+/- 10%)
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Housing: 316L stainless steel, hermetically sealed
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Connector: 3-pin MIL-C-5015 receptacle
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Temperature Range: -55 Celsius to +121 Celsius
Applications
- Gear mesh monitoring
- Casing vibration measurement on rotating machinery
- Bearing housing vibration analysis
- General purpose industrial vibration monitoring
- API 670 compliant machinery protection systems
Ordering Information
| Option |
Code |
Description |
| Orderable Part Number |
330400-01-00 |
330400 Accelerometer, 1/4-28 UNF, No Hazardous Approval |
| A - Mounting Thread |
01 |
1/4-28 UNF integral stud |
| B - Agency Approval |
00 |
None (Non-hazardous) |
Technical Specifications
| Manufacturer |
Bently Nevada (Baker Hughes) |
| Part Number |
330400-01-00 |
| Sensitivity |
100 mv/g (10.2 mv/m/s2) +/- 5% |
| Acceleration Range |
50 g peak (490 m/s2) |
| Amplitude Linearity |
+/- 1% to 50 g peak |
| Broadband Noise Floor |
0.01 g rms (10 Hz to 15 kHz) |
| Transverse Sensitivity |
Less than 5% of axial |
| Mounted Resonant Frequency |
Greater than 30 kHz |
| Operating Temperature |
-55 Celsius to +121 Celsius |
| Case Material |
316L stainless steel |
| Connector Type |
3-pin MIL-C-5015 receptacle |
| Weight |
100 g (3.5 oz) typical |
| Diameter |
23 mm (0.93 in) |
| Height |
59 mm (2.3 in), including stud |
| Shock Survivability |
5000 g peak maximum |
| IP Rating |
IP68 (Dust tight and watertight, sensor only) |
Installation Guidelines
- Ensure mounting surface is machined to 32 minch rms for optimal frequency response.
- Recommended mounting torque is 4.1 N-m (3.0 ft-lb).
- Install on bearing housing or machine casing; improper installation may degrade frequency response or generate false signals.
- Use appropriate shielded 3-conductor cable; maintain protected enclosure and conduit for field wiring.
- The sensor is case isolated.