The Bently Nevada 330500-00-01 Velomitor Piezo-velocity Sensor provides reliable vibration monitoring for industrial machinery. This sensor outputs a velocity-proportional signal without requiring an external integrator. Its 316L stainless steel case ensures durability in harsh environments. Additionally, the 330500 series sensor works perfectly for turbines, compressors, and pumps.
This section covers the electrical and performance parameters. All values are specified from +20°C to +30°C at 100 Hz unless noted.
Sensitivity
The sensor offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%. This rating ensures accurate velocity measurements.
Frequency Response
You get a broad frequency range. From 4.5 Hz to 5 kHz (270 cpm to 300 kcpm) ±3.0 dB. For tighter accuracy, use 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) ±0.9 dB.
Velocity Range and Linearity
The maximum measurable velocity is 1270 mm/s (50 in/s) peak. Amplitude linearity stays within ±2% up to 152 mm/s (6 in/s) peak.
Output Bias and Impedance
Output bias voltage measures -12 ±3.0 VDC referenced to Pin A. Dynamic output impedance is less than 2400 Ω.
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. Transverse sensitivity remains less than 5% of the main sensitivity.
The Bently Nevada 330500-00-01 survives extreme conditions. First, its operating temperature ranges from -55°C to 121°C (-67°F to 250°F). Second, it withstands shocks up to 5,000 g peak. Third, 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 and Mounting Details
Magnetic field susceptibility is less than 51 min/s/gauss (50 gauss, 50-60Hz). Mounting torque should be 32-46 kg cm (24-40 in-lb) max.
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.
Pay 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 for grounding flexibility.
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).
The 330500-00-01 holds several critical approvals.
Ex ia IIC T4 and AEx ia IIC T4 for Zone 0/1.
Class I, Division 1, Groups A, B, C, D for North America.
Also rated Ex nL IIC T4 and Class I, Div 2, Groups A, B, C, D.
Temperature class T4 from -40°C ≤ Ta ≤ 100°C.
Install according to drawing 167537.
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.
Prepare a flat, clean mounting surface.
Apply anti-seize compound on the threads.
Tighten the sensor to 32-46 kg cm (24-40 in-lb). Do not exceed this torque.
Use the recommended cable length to maintain signal integrity.
Verify the polarity matches your monitoring system.
Operating the transducer outside specified limits may cause false readings. Always respect the temperature and velocity ranges.
1 x Bently Nevada 330500-00-01 Velomitor Piezo-velocity Sensor
1 x Protective cap for the connector
1 x Installation instruction sheet (drawing reference 167537)
Note: Cables and mounting accessories are sold separately.
All orders ship via Fedex, UPS, or DHL. Delivery times depend on your location. We use professional anti-static and anti-shock packaging.
1. What is the difference between the 330500-00-01 and a standard accelerometer?
The Bently Nevada 330500-00-01 directly outputs velocity. A standard accelerometer outputs acceleration. Therefore, you do not need an external integrator for velocity readings.
2. Can I use this sensor in a Class I, Division 1 location?
Yes. The 330500-00-01 has a Class I, Division 1 approval for Groups A, B, C, and D. However, always follow drawing 167537 for safe installation.
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 sensor case grounded or isolated?
The case is isolated from the internal electronics. Therefore, you can ground the case separately if needed. This feature helps avoid ground loops.
| Brand Name | Bently Nevada |
| Model No. | 330500-00-01 |
| Product Type | Velomitor Piezo-velocity Sensor |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
