The Bently Nevada 330400-01-05 is a certified acceleration transducer built for explosive environments. This model shares the same core performance as the standard 330400 series but adds CSA, ATEX, and IECEx approvals. It offers a sensitivity of 10.2 mV/m/s² (100 mV/g) ±5% and operates from 10 Hz to 15 kHz. Therefore, the Bently Nevada 330400-01-05 suits refineries, chemical plants, and offshore platforms where safety compliance is mandatory.
Sensitivity and Measurement Range
The 330400-01-05 provides a sensitivity of 10.2 mV/m/s² (100 mV/g) ±5%. Its acceleration range reaches 490 m/s² (50 g) peak across the 10 Hz to 15 kHz span. Above 15 kHz, transducer resonance significantly reduces this usable range. Amplitude linearity stays within ±1% up to 490 m/s² (50 g) peak.
Noise and Frequency Response
Broadband noise floor measures only 0.039 m/s² (0.004 g) rms between 10 Hz and 15 kHz. Frequency response holds ±3 dB from 10 Hz to 15 kHz (600 to 900,000 cpm). Meanwhile, it achieves ±10 dB from 30 Hz to 10 kHz (1,800 to 600,000 cpm).
Temperature and Transverse Sensitivity
Typical temperature sensitivity ranges from -11% to +3% across the full operating range. Transverse sensitivity remains less than 5% of axial sensitivity, ensuring accurate directional measurement.
Resonance and Base Strain
Mounted resonant frequency exceeds 30 kHz with a resonant peak amplitude of 20 dB maximum. For serial numbers with the letter “G”, base strain sensitivity is 49 mm/s²/mstrain (0.005 g/mstrain). For older units without “G”, Bently Nevada strongly recommends using the optional mounting base to minimize strain effects.
Electrical and Cable Data
Maximum cable length reaches 305 metres (1,000 ft) without signal degradation. Power requirements include an input voltage of -24 ± 0.5 Vdc and a nominal bias current of 2 mA. Output bias voltage is -8.5 ± 0.5 Vdc. The case is electrically isolated.
Certification Details
The 330400-01-05 carries multiple agency approvals: CSA, ATEX, and IECEx. These certifications allow installation in Zone 0, Zone 1, and Zone 2 hazardous locations. Accordingly, this accelerometer meets global safety standards for explosive gas and dust atmospheres.
Installation Compliance
When installing the Bently Nevada 330400-01-05, always follow local hazardous area regulations. Use certified explosion-proof cables and connectors. The IP68 rating applies to the sensor body only, not the cable assembly.
Temperature and Shock
Operating and storage temperature spans -55°C to +121°C (-67°F to +250°F). Shock survivability peaks at 49,050 m/s² (5,000 g), making the sensor highly robust.
Humidity and Magnetic Field
Relative humidity tolerance reaches 100% condensing (non-submerged). The hermetically sealed case supports this level. Magnetic field susceptibility stays below 2.21 mm/s²/gauss (225 mg/gauss) at 50-60 Hz.
IP Rating and Physical Dimensions
The 330400-01-05 has an IP68 rating (dust tight and watertight) for the sensor only. Weight without cable is 99 g (3.5 oz) typical. Diameter measures 23 mm (0.93 in). Height including mounting stud is 59 mm (2.3 in).
Connector and Materials
A 3-pin MIL-C-5015 receptacle is used. Both case and connector are made of 316L stainless steel. Mounting surface finish requires 32 minch rms. Recommended mounting torque is 4.1 N·m (3.0 ft·lb). The sensor can be mounted in any orientation.
Mounting Preparation
First, clean the mounting surface to achieve 32 minch rms finish. Next, apply 4.1 N·m (3.0 ft·lb) torque when securing the ¼-28 UNF integral stud. Avoid over-tightening to prevent thread damage.
Hazardous Area Cabling
Use only certified intrinsically safe cables with the 330400-01-05. The maximum cable length remains 305 metres (1,000 ft). Since the case is isolated, proper grounding must be done at the signal conditioner side according to hazardous area rules.
Orientation and Strain Relief
This accelerometer works in any orientation. For older serial numbers without “G”, always install the optional mounting base to minimize base strain sensitivity. Secure the cable to prevent vibration-induced stress.
Bently Nevada 330400-01-05 accelerometer sensor (1 unit)
¼-28 UNF integral mounting stud (pre-installed)
Protective dust cap for MIL-C-5015 connector
Hazardous area approval information sheet
Installation quick-start guide
Note: Cables, mounting bases, and intrinsic safety barriers are sold separately.
FedEx, UPS, DHL
1. What hazardous area approvals does the 330400-01-05 carry?
The Bently Nevada 330400-01-05 holds CSA, ATEX, and IECEx certifications. These approvals allow installation in Zone 0, Zone 1, and Zone 2 explosive atmospheres.
2. Is the sensitivity different from the standard 330400 model?
No, the 330400-01-05 offers the same 10.2 mV/m/s² (100 mV/g) ±5% sensitivity as the standard version. The only difference is the hazardous area approvals.
3. Can I use this sensor with a 305-metre cable in a hazardous area?
Yes, the maximum cable length is 305 metres (1,000 ft). However, you must use certified intrinsically safe cables and appropriate barriers for hazardous locations.
4. What is the operating temperature range for the 330400-01-05?
The sensor operates from -55°C to +121°C (-67°F to +250°F). This wide range makes it suitable for extreme industrial environments.
5. How do I identify the base strain sensitivity of my unit?
Check the serial number. If it starts with the letter “G”, base strain sensitivity is 49 mm/s²/mstrain. For units without “G”, Bently Nevada recommends using the mounting base to reduce strain sensitivity.
| Brand Name | Bently Nevada |
| Model No. | 330400-01-05 |
| Product Type | Accelerometer Acceleration Transducer |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
