The Bently Nevada 330500-08-00 Velomitor Piezo-velocity Sensor delivers accurate vibration measurements for rotating equipment. You can install this sensor on turbines, compressors, pumps, and fans. Its piezoelectric technology outputs a direct velocity signal without any external conditioning.
This sensor achieves a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5% under standard conditions. The frequency response ranges from 4.5 Hz to 5 kHz (270 cpm to 300 kcpm) within ±3.0 dB. For tighter accuracy needs, the response from 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) stays within ±0.9 dB.
The peak velocity measurement reaches 1270 mm/s (50 in/s). Moreover, the amplitude linearity holds ±2% up to 152 mm/s (6 in/s) peak. The mounted resonant frequency exceeds 12 kHz, which minimizes mechanical interference.
Furthermore, the output bias voltage measures -12 ±3.0 VDC relative to Pin A. Dynamic output impedance remains below 2400 Ω. The broadband noise floor from 4.5 Hz to 5 kHz is only 0.004 mm/s (160 μin/s) rms nominal.
The Bently Nevada 330500-08-00 operates reliably between -55°C and 121°C (-67°F to 250°F). It withstands mechanical shocks up to 5,000 g peak. The hermetically-sealed case allows 100% non-submerged humidity exposure.
Base strain sensitivity equals 0.005 in/s/mstrain. Magnetic field susceptibility stays below 51 min/s/gauss at 50 gauss, 50-60Hz. Therefore, this sensor performs well near motors, generators, and transformers.
This sensor weighs 142 grams (5.0 oz) typical. Its diameter is 25.3 mm (0.995 in), and total height is 63.2 mm (2.49 in). The case uses 316L stainless steel, which provides excellent corrosion resistance.
The connector is a hermetically-sealed 2-pin Mil-C-5015 type with a 316L stainless steel shell. Maximum mounting torque should stay between 32-46 kg cm (24-40 in-lb). Polarity rule: when the sensor case moves toward the connector, Pin A becomes positive relative to Pin B.
You can mount the Bently Nevada 330500-08-00 using its 1/2-13 UNC thread option. Clean and flatten the mounting surface before installation. Apply the recommended torque carefully to avoid false readings or sensor damage.
The maximum cable length reaches 305 metres (1,000 feet) using Bently Nevada part number 02173006 without signal loss. However, for applications with 50g vibration at 10 kHz and 200 pF/m cable capacitance, the recommended length is 208 ft (63m).
Grounding is case isolated, which prevents ground loop issues. Always follow installation drawing 167537 for proper setup.
This sensor carries full hazardous area certifications despite the -00 (not required) agency option. It meets 330500 Ex ia IIC T4 and AEx ia IIC T4 standards. Use it in Class I, Division 1, Groups A, B, C, D, plus Class II Groups E, F, G, and Class III.
Additionally, it suits non-incendive applications with Ex nL IIC T4 and AEx nA IIC T4 ratings for Class I, Div 2, Groups A, B, C, D. The temperature code is T4 from -40°C to 100°C ambient.
The Bently Nevada 330500-08-00 complies with FCC Part 15 rules. It also meets EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU. For maritime environments, it follows DNV rules for ships, high-speed craft, light craft, and offshore standards.
1 x Bently Nevada 330500-08-00 Velomitor Piezo-velocity Sensor
1 x Protective plastic cap for the Mil-C-5015 connector
1 x Installation instruction sheet (drawing 167537)
1. What is the difference between 330500-08-00 and 330500-07-CN?
The main difference is the mounting thread. The 330500-08-00 uses 1/2-13 UNC, while the -07 version uses 3/8-16 UNC. Additionally, the -00 has no agency approval.
2. Can I use this sensor in a hazardous area without certifications?
Yes, the sensor itself has full hazardous area approvals (Ex ia IIC T4). The -00 option simply means no additional agency paperwork is required.
3. How do I extend the cable beyond 305 metres?
You cannot exceed 305 metres with part number 02173006 without signal degradation. Use signal conditioners or relocate the monitoring system instead.
4. What happens if the operating temperature exceeds 121°C?
Operation above 121°C may cause false readings or permanent sensor damage. Always stay within the -55°C to 121°C range.
5. Which shipping carriers do you use?
We ship exclusively via FedEx, UPS, and DHL for worldwide delivery with tracking.
| Brand Name | Bently Nevada |
| Model No. | 330500-08-00 |
| Product Type | Piezo-velocity Sensor |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
