The Bently Nevada 330400-02-05 is a certified accelerometer designed for vibration monitoring in potentially explosive atmospheres. This acceleration transducer captures critical vibration data from bearings, casings, and structural components on turbines, compressors, pumps, and motors. Manufactured in the U.S.A., this model features an M8 x 1 integral stud for secure mounting.
This specific configuration includes the Mounting Thread Option 02 (M8 x 1) and the Agency Approval Option 05, which covers CSA, ATEX, and IECEx certifications. The 330400-02-05 delivers a sensitivity of 10.2 mV/m/s² (100 mV/g) ±5%, ensuring compatibility with most industrial vibration monitoring systems. Its wide frequency response captures both low-speed and high-speed machinery faults effectively.
The 330400 series accelerometers incorporate several design features for reliable operation in harsh settings. For instance, the case is hermetically sealed and constructed from 316L stainless steel, providing excellent corrosion resistance. Additionally, the case is electrically isolated from ground, which prevents ground loop issues in your measurement system. Most importantly, the multiple agency approvals make this sensor suitable for global use in hazardous areas.
The 330400-02-05 acceleration transducer offers outstanding electrical and performance characteristics. Its acceleration range extends to 490 m/s² (50 g) peak overall within the 10 Hz to 15 kHz frequency span. The amplitude linearity is within ±1% to 490 m/s² (50 g) peak, ensuring accurate measurements across the full range. Furthermore, the broadband noise floor is exceptionally low at 0.039 m/s² (0.004 g) rms from 10 Hz to 15 kHz.
Specifically, the frequency response is ±3dB from 10 Hz to 15 kHz (600 cpm to 900,000 cpm) and ±10% from 30 Hz to 10 kHz (1800 cpm to 600,000 cpm). The mounted resonant frequency exceeds 30 kHz, well above the measurement range. Transverse sensitivity is less than 5% of axial sensitivity, minimizing errors from off-axis vibrations. Additionally, the temperature sensitivity ranges from -11% to +3% typical over the operating temperature range.
Power requirements for this sensor include an input voltage of -24 ± 0.5 Vdc and a bias current of 2 mA nominal. The output bias voltage is -8.5 ± 0.5 Vdc. The maximum cable length is 305 meters (1000 feet) without signal degradation, providing flexibility in system layout.
The construction of the 330400-02-05 accelerometer prioritizes durability and reliability. The case is machined from 316L stainless steel, offering excellent resistance to corrosion and physical damage. The connector is a 3-pin MIL-C-5015 receptacle, a rugged military-grade design. The sensor weighs 99 g (3.5 oz) typical, with a diameter of 23 mm (0.93 in) and a height of 59 mm (2.3 in) including the mounting stud.
In terms of environmental resilience, this acceleration transducer operates within a temperature range of -55°C to +121°C (-67°F to +250°F) for both storage and operation. It can survive shock loads up to 49,050 m/s² (5000 g) peak, making it highly robust. The relative humidity rating is 100% condensing (non-submerged), and the case is hermetically sealed. The IP rating is equivalent to IP 68 (dust tight and watertight) for the sensor body only.
The 330400-02-05 distinguishes itself with its comprehensive agency approvals. Specifically, the Agency Approval Option 05 includes CSA, ATEX, and IECEx certifications. This makes the accelerometer suitable for installation in explosive atmospheres defined by these regulatory bodies. For detailed temperature classifications and installation requirements, please consult the relevant certificates available upon request.
A critical specification for the 330400-02-05 is its base strain sensitivity, which varies based on the serial number prefix. For units with serial numbers preceded by the letter "G" (all new sensors), the base strain sensitivity is 49 mm/s²/mstrain (0.005 g/mstrain). For units with serial numbers NOT preceded by "G" (shipped prior to April 2004), the sensitivity is 980 mm/s²/mstrain (0.100 g/mstrain) without the Mounting Base (API adapter) and 4.9 mm/s²/mstrain (0.0005 g/mstrain) with the Mounting Base.
Therefore, for older units without the "G" prefix, Bently Nevada strongly recommends installing the accelerometer with the supplied Mounting Base to minimize base strain errors. Proper surface preparation is also essential. The mounting surface should have a finish of 32 minch rms. The recommended mounting torque is 4.1 N·m (3.0 ft·lb). The sensor can be mounted in any orientation.
Your shipment for the 330400-02-05 will include the following items:
1 x Bently Nevada 330400-02-05 Accelerometer (M8 x 1 integral stud)
1 x Mounting Base (API adapter) – included for applicable units
Installation and mounting instructions sheet
Note: Cables, signal conditioning equipment, and hazardous area certificates are sold separately.
Q1: What certifications does the Bently Nevada 330400-02-05 accelerometer carry?
The 330400-02-05 carries Agency Approval Option 05, which includes CSA, ATEX, and IECEx certifications. This makes it suitable for hazardous area installations.
Q2: What is the sensitivity of this acceleration transducer?
This acceleration transducer has a sensitivity of 10.2 mV/m/s² (100 mV/g) ±5%. This is a standard sensitivity for industrial vibration monitoring.
Q3: What is the mounting thread on the 330400-02-05?
The 330400-02-05 features an M8 x 1 integral stud. This is specified by the Mounting Thread Option 02.
Q4: What is the operating temperature range for this accelerometer?
The operating and storage temperature range is -55°C to +121°C (-67°F to +250°F). This makes it suitable for most industrial environments.
Q5: What is the base strain sensitivity for new units?
For new units with serial numbers preceded by the letter "G", the base strain sensitivity is 49 mm/s²/mstrain (0.005 g/mstrain). Lower values minimize measurement errors from mounting surface deformation.
| Brand Name | |
| Model No. | 330400-02-05 |
| Product Type | Accelerometer Acceleration Transducer |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
