The Bently Nevada 330500-02-00 Velomitor Piezo-velocity Sensor provides direct velocity output for vibration monitoring. You do not need an external integrator for this sensor. Its 316L stainless steel case ensures excellent durability in harsh environments. Additionally, the 330500 series sensor fits perfectly on turbines, compressors, pumps, and fans. This specific model features an M8 x 1 mounting thread.
All electrical parameters are specified from +20°C to +30°C at 100 Hz. Operating the transducer outside the specified limits may result in false readings.
Sensitivity
The sensor offers a fixed sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%. Therefore, you get reliable and repeatable measurements.
Frequency Response
The 330500-02-00 covers a wide frequency range. First, it operates from 4.5 Hz to 5 kHz (270 cpm to 300 kcpm) ±3.0 dB. For critical applications, use the tighter range of 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) ±0.9 dB.
Velocity Range and Linearity
Maximum measurable velocity reaches 1270 mm/s (50 in/s) peak. Amplitude linearity stays within ±2% up to 152 mm/s (6 in/s) peak. This ensures accurate readings across most machine vibrations.
Output Bias and Impedance
Output bias voltage measures -12 ±3.0 VDC referenced to Pin A. Dynamic output impedance is less than 2400 Ω. Consequently, the sensor works well with long cables.
Noise Floor and Transverse Sensitivity
Broadband noise floor (4.5 Hz to 5 kHz) is only 0.004 mm/s (160 μin/s) rms nominal. Additionally, transverse sensitivity remains less than 5% of the main sensitivity.
The Bently Nevada 330500-02-00 handles extreme conditions without failure.
Temperature Range
Operating temperature spans from -55°C to 121°C (-67°F to 250°F). Therefore, this sensor suits both outdoor and high-temperature machinery.
Shock and Humidity
Shock survivability reaches 5,000 g peak maximum. Relative humidity can reach 100% non-submerged because the case is hermetically-sealed.
Temperature Sensitivity and Base Strain
Temperature sensitivity varies typically from -14% to +7.5% over the full range. Base strain sensitivity is only 0.005 in/s/mstrain.
Magnetic Field Susceptibility
Magnetic field susceptibility is less than 51 min/s/gauss (50 gauss, 50-60Hz). Hence, nearby motors or generators will not干扰 readings.
Weight is 142 grams (5.0 oz) typical. Diameter measures 25.3 mm (0.995 in). Height is 63.2 mm (2.49 in). The case uses 316L stainless steel. Connector type is a 2-pin Mil-C-5015 hermetically-sealed shell with 316L stainless steel.
This specific model, 330500-02-00, includes the -02 mounting thread option. This means it has an M8 x 1 thread. No adapter is needed. Always apply the correct mounting torque of 32-46 kg cm (24-40 in-lb) max.
Pay close attention to polarity. When the sensor case moves toward the connector, Pin A becomes positive with respect to Pin B. The sensor features case isolation. Therefore, you can ground the case separately if needed.
Maximum cable length reaches 305 metres (1,000 feet) using part number 02173006. For a high vibration scenario (50g, 10 kHz, 200 pf/m cable capacitance), the recommended cable length is 208 ft (63m). Longer cables may degrade the signal.
The 330500-02-00 (with -00 approval option) has no agency approval. However, the base sensor design still meets the following hazardous area standards if ordered with the -01 option. For reference:
Ex ia IIC T4 and AEx ia IIC T4 for Zone 0/1.
Class I, Division 1, Groups A, B, C, D.
Temperature class T4 from -40°C ≤ Ta ≤ 100°C.
Install per drawing 167537 if used in hazardous areas.
The sensor complies with FCC Part 15 rules. It also meets EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU. Maritime approvals include DNV rules for ships, high-speed craft, and offshore standards.
Follow these steps for proper installation of the 330500-02-00.
Prepare a flat, clean mounting surface on the machine.
Apply anti-seize compound on the M8 x 1 threads.
Tighten the sensor to 32-46 kg cm (24-40 in-lb). Never exceed this torque.
Use the recommended cable length to maintain signal integrity.
Verify the polarity matches your monitoring system before power-up.
Operating the transducer outside specified limits may cause false readings or loss of machine monitoring. Always respect the temperature and velocity ranges.
1 x Bently Nevada 330500-02-00 Velomitor Piezo-velocity Sensor (M8 x 1 thread)
1 x Protective cap for the 2-pin Mil-C-5015 connector
1 x Installation instruction sheet (drawing reference 167537)
Note: Cables, mounting accessories, and certification documents are sold separately.
All orders ship via Fedex, UPS, or DHL. We use professional anti-static and anti-shock packaging. Delivery times depend on your location.
1. What is the difference between the 330500-02-00 and the 330500-00-01?
The 330500-02-00 has an M8 x 1 mounting thread and no agency approval. The 330500-00-01 has no adapter (standard thread) and CSA/US/C approval. All other electrical specs are identical.
2. Can I use the 330500-02-00 in a hazardous area?
No. This specific model has the -00 approval option, meaning no agency approval. For hazardous areas, you must order the -01 version (e.g., 330500-00-01 or 330500-02-01).
3. What happens if I exceed the 1270 mm/s velocity range?
Exceeding 1270 mm/s peak may cause signal clipping or false readings. Additionally, it could damage the internal electronics. Keep vibrations within the specified range.
4. How do I check the output bias voltage?
Measure between Pin A and Pin B. You should see -12 ±3.0 VDC at room temperature. A reading outside this range suggests a sensor or cable fault.
5. Is the M8 x 1 thread compatible with standard mounting studs?
Yes. The 330500-02-00 uses a standard M8 x 1 thread. You can mount it directly or use an adapter. Always apply the correct torque of 32-46 kg cm.
| Brand Name | Bently Nevada |
| Model No. | 330500-02-00 |
| Product Type | Velomitor Piezo-velocity Sensor |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
