Bently Nevada 330400-02-00 Accelerometer 100 mV/g

Bently Nevada 330400-02-00 Accelerometer Transducer

Why Choose This Vibration Sensor for General Industrial Use

The Bently Nevada 330400-02-00 provides accurate vibration data for rotating machinery. You can use it on pumps, fans, compressors, and general-purpose motors. This sensor detects early bearing wear, unbalance, and misalignment. The hermetically sealed case performs reliably in condensing humidity. Furthermore, the IP68 rating makes it dust-tight and watertight. However, this specific model has no agency approvals, so it suits non-hazardous locations only.

Core Technical Specifications You Must Know

Sensitivity measures 10.2 mV/m/s² (100 mV/g) ±5%. This value stays stable across the operating range.
Acceleration range reaches 490 m/s² (50 g) peak within 10 Hz to 15 kHz.
Amplitude linearity remains within ±1% up to 490 m/s² (50 g) peak.
Broadband noise floor is only 0.039 m/s² (0.004 g) rms from 10 Hz to 15 kHz.
Frequency response spans 10 Hz to 15 kHz (600 to 900,000 cpm) at ±3dB.
Additionally, from 30 Hz to 10 kHz (1,800 to 600,000 cpm) you get ±10% accuracy.
Temperature sensitivity typically varies from -11% to +3% over the full operating range.
Transverse sensitivity stays below 5% of axial measurement.
Mounted resonant frequency exceeds 30 kHz with a resonant peak of 20 dB maximum.

Base Strain Sensitivity and Cable Length

For serial numbers preceded by the letter “G” (all new sensors after April 2004), base strain sensitivity equals 49 mm/s²/mstrain (0.005 g/mstrain). For older serial numbers NOT preceded by “G”, sensitivity without the mounting base is 980 mm/s²/mstrain (0.100 g/mstrain). Nevertheless, if you install the original mounting base (API adapter), it drops to 4.9 mm/s²/mstrain (0.0005 g/mstrain). Bently Nevada strongly recommends using the mounting base with older units.
Maximum cable length reaches 305 metres (1000 ft) without signal degradation.

Power Requirements and Electrical Data

Input voltage requires -24 ± 0.5 Vdc. Bias current is 2 mA nominal. Output bias voltage measures -8.5 ± 0.5 Vdc. The case is isolated from ground to prevent ground loops. Therefore you can mount it on grounded structures without electrical interference.

Environmental Limits for Demanding Field Use

Operating and storage temperature ranges from -55°C to +121°C (-67°F to +250°F). Shock survivability reaches 49,050 m/s² (5000 g) peak. Relative humidity allows 100% condensing, non-submerged conditions because the case is hermetically sealed. Magnetic field susceptibility stays below 2.21 mm/s²/gauss (225 mg/gauss) at 50 gauss, 50-60Hz. The IP rating equals IP68, meaning total dust ingress protection and continuous water immersion resistance. Please note this rating applies to the sensor only, not the cable.

Mechanical Installation Guidelines

Weight without cable is typically 99 g (3.5 oz). Diameter measures 23 mm (0.93 in). Height reaches 59 mm (2.3 in) including the mounting stud. The connector is a 3-pin MIL-C-5015 receptacle made of 316L stainless steel. Mounting surface finish requires 32 minch rms. Mounting torque must be 4.1 N·m (3.0 ft·lb). Case material is also 316L stainless steel. You can mount the 330400-02-00 in any orientation, which gives you flexible installation options.

Step-by-Step Mounting Procedure

First, prepare a flat mounting surface with the recommended 32 minch rms finish.
Next, clean the M8 x 1 integral stud and the mating hole thoroughly.
Then apply the specified torque of 4.1 N·m (3.0 ft·lb). Avoid overtightening.
Finally, connect your cable to the 3-pin MIL-C-5015 receptacle. Use a locking mechanism if available.
For best results, avoid mounting on thin or flexible brackets. Additionally, keep the cable away from heat sources above 121°C.

Shipping and Delivery Options

All orders ship via Fedex, UPS, or DHL. You will receive a tracking number within 24 hours after dispatch. International delivery typically takes 3 to 7 business days.

Packaging List

• Bently Nevada 330400-02-00 accelerometer sensor (1 unit)

• M8 x 1 integral mounting stud (pre-installed)

• 3-pin MIL-C-5015 mating connector (receptacle only)

• Quick installation reference sheet

Note: No calibration certificates or warranty documents are included in the package.

Frequently Asked Questions (FAQ)

1. What is the difference between the 330400-02-00 and the 330400-02-RU?
The 330400-02-00 has no agency approvals (option “00”), while the -RU version has Russian country-specific approvals. All other specifications remain identical: same sensitivity, range, and environmental limits.

2. Can I use the 330400-02-00 in a hazardous area like a chemical plant?
No, you cannot. This model has no agency approvals for explosive atmospheres. It suits only general industrial, non-hazardous locations. For hazardous areas, choose a version with appropriate certifications like ATEX or CSA.

3. How do I check if my sensor has the lower base strain sensitivity?
Look at the serial number. If it starts with the letter “G”, you have the improved 49 mm/s²/mstrain specification. If not preceded by “G”, use the supplied mounting base to achieve 4.9 mm/s²/mstrain. The 330400-02-00 units shipped after April 2004 all have the “G” prefix.

4. What happens if I exceed the 490 m/s² (50 g) acceleration range?
Brief overloads up to 5,000 g shock are survivable. However, continuous operation above 50 g peak will degrade linearity and accuracy. Furthermore, high-frequency vibrations above 15 kHz reduce the usable range significantly.

5. What is the expected lifespan of this sensor at 100°C?
Typically 5 to 8 years under continuous operation at 100°C. The hermetically sealed 316L stainless steel case protects internal components. Nevertheless, annual sensitivity checks are recommended for critical machinery.