Bently Nevada 330500-02-RU | Velomitor Piezo-Velocity Sensor

Product Overview

The Bently Nevada 330500-02-RU Velomitor Piezo-velocity Sensor is a solid-state, piezoelectric accelerometer with integrated electronics, designed for absolute vibration measurement of bearing housings, casings, or structural components. It is ideal for rotating machinery monitoring in industrial environments, ensuring accurate and reliable vibration analysis.

Key Features

✔ Measures absolute vibration relative to free space
✔ Wide frequency response (4.5 Hz – 5 kHz)
✔ High sensitivity (3.94 mV/mm/s or 100 mV/in/s ±5%)
✔ Hermetically sealed 316L stainless steel case
✔ Shock survivability up to 5000 g peak
✔ Long cable length capability (up to 305 meters without signal degradation)
✔ Hazardous area certification (EAC Ex approved)

Specifications

Electrical

Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%
Frequency Response:
- 4.5 Hz to 5 kHz (±3.0 dB)
- 6.0 Hz to 2.5 kHz (±0.9 dB)
Temperature Sensitivity: -14% to +7.5% over the operating temperature range
Velocity Range: 1270 mm/s (50 in/s) peak
Transverse Sensitivity: <5% of sensitivity
Amplitude Linearity: ±2% up to 152 mm/s (6 in/s) peak
Mounted Resonant Frequency: >12 kHz
Output Bias Voltage: -12 VDC ±3.0 VDC
Dynamic Output Impedance: < 2400 Ω
Broadband Noise Floor (4.5 Hz – 5 kHz): 0.004 mm/s (160 µin/s) rms, nominal
Grounding: Case isolated
Maximum Cable Length: 305 m (1000 ft) using cable part number 02173006

Environmental Limits

Operating Temperature: -55°C to +121°C (-67°F to +250°F)
Shock Survivability: 5000 g peak
Relative Humidity: Up to 100%, non-submerged (hermetically sealed case)
Base Strain Sensitivity: 0.005 in/s/mstrain
Magnetic Field Susceptibility: <51 min/s/gauss (50 gauss, 50-60 Hz)

Physical Specifications

Weight: 142 g (5.0 oz), typical
Diameter: 25.3 mm (0.995 in)
Height: 63.2 mm (2.49 in)
Case Material: 316L stainless steel
Connector: 2-pin MIL-C-5015, hermetically sealed stainless steel
Mounting Torque: 32-46 kg cm (24-40 in-lb) max
Polarity: Motion toward the connector makes Pin A positive with respect to Pin B

Recommended Cable Length

63 m (208 ft) (for max vibration of 50g, frequency 10 kHz, and cable capacitance 200 pf/m)
For longer lengths, consult Bently Nevada Tech Support

Ordering Information

Part Number: 330500-02-RU
Configuration Breakdown:
- A: Mounting Thread Adapter Option → 02 (M8 x 1)
- B: Agency Approval Option → RU (Hazardous Area Certification, EAC Ex Approved)

Contact Us

Phone: +86-15915488782
Email: uma@meloauto.com
WhatsApp: +8615915488782
Business Hours: 24/7 service
Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

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