330500-02-00 | Bently Nevada Velomitor Piezo-velocity Sensor

Product Overview

The Bently Nevada 330500-02-00 is a Velomitor Piezo-Velocity Sensor featuring an M8×1 metric mounting thread and no agency approvals. This model is designed for general-purpose vibration velocity measurement in non-hazardous industrial environments. The M8×1 thread is commonly used on European and Asian machinery, making this sensor ideal for OEM equipment and international installations.

Key Specifications

• Manufacturer: Bently Nevada (Baker Hughes)
• Product Family: Velomitor Piezo-Velocity Sensor
• Type: Piezoelectric Velocity Transducer
• Mounting Thread Adapter: M8 × 1 (02)
• Agency Approval: Not required (00)
• Measurement Type: Absolute vibration velocity (relative to free space)
• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5% at 80 Hz
• Frequency Response: 2.0 Hz to 1.0 kHz (±3 dB)
• Transverse Sensitivity: < 5% of axial
• Output Impedance: < 100 Ω
• Power Requirements: 18 to 30 VDC, 2 to 10 mA
• Shock Limit: 5000 g peak
• Operating Temperature: -40°C to +100°C (-40°F to +212°F)
• Storage Temperature: -40°C to +120°C (-40°F to +248°F)
• Humidity: 95% non-condensing
• Case Material: 316L stainless steel
• Connector: 2-pin Mil-C-5015, hermetically sealed, 316L stainless steel shell
• Dimensions: Height 63.2 mm (2.49 in) × Diameter 25.3 mm (0.995 in)
• Weight: 142 g (5.0 oz)
• Mounting Torque: 32–46 kg-cm (24–40 in-lb) maximum
• Protection Rating: IP65 (hermetically sealed)

Installation Guide

1. Mounting Surface: Prepare a flat, smooth surface. Surface roughness Ra 3.2 µm or better.
2. Mounting Hole: Drill and tap an M8×1 threaded hole to a depth of at least 12 mm. Ensure perpendicularity.
3. Sensor Installation: Apply anti-seize compound. Thread by hand until snug. Torque to 32–46 kg-cm (24–40 in-lb) max.
4. Orientation: Install with connector facing the primary vibration direction.
5. Cable Connection: Use 2-pin Mil-C-5015 compatible cable (e.g., Bently Nevada 84661 series).
6. Cable Routing: Separate from power cables by minimum 300 mm.
7. Verification: Confirm sensor output responds to machine vibration.

FAQ

Q: What is the difference between 330500-02-00 and 330500-02-04?
A: The -02-00 has no agency approvals. The -02-04 has CSA and ATEX approvals. Both have M8×1 mounting thread. Electrical specifications are identical.

Q: Can I use this sensor in a hazardous area?
A: No. The -00 suffix indicates no hazardous area approvals. For hazardous areas, order 330500-02-04 or other approved variants.

Q: Is M8×1 a common mounting thread?
A: Yes. M8×1 is widely used on European machinery, particularly pumps, motors, and fans manufactured to metric standards.

Selection Tips

• Verify the mounting thread on your equipment before ordering. M8×1 is metric; 1/2-20 UNF is imperial.
• For hazardous areas, upgrade to -04 approval suffix.
• Match the exact model number when replacing failed sensors.