Description
Product Core Brief
- Model: 330500-02-CN
- Brand: Bently Nevada
- Series: 330500 Velomitor
- Core Function: Measures absolute casing and structure vibration via piezoelectric elements.
- Product Type: Piezoelectric Velocity Sensor
- Key Specs: M8 x 1 Thread | China Approved | 3.94 mV/mm/s
- Condition: New Original (New Surplus)
BENTLY 330500-02-CN
Product Introduction
BENTLY 330500-02-CN is a piezoelectric velocity sensor for measuring absolute casing vibration. It uses solid-state electronics and can be mounted in any orientation.
This specific unit features an M8 x 1 thread and holds China approval certification. The BENTLY 330500-02-CN provides a calibrated sensitivity of 3.94 mV/mm/s with a frequency response from 4.5 Hz to 5 kHz.
Key Technical Specifications
- Sensor Type: Piezoelectric Velocity
- Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%
- Frequency Response: 4.5 Hz to 5 kHz (±3.0 dB)
- Mounting Thread: M8 x 1
- Operating Temp: -55 °C to +121 °C
- Casing Material: 316L Stainless Steel
- Weight: 142 g
- Max Cable Length: 305 m (1000 ft)
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Trace source via serial number. Inspect casing for dents and verify M8 thread integrity.
- Live Functional Test: Power-on self-check. Run signal handshake test. Log temperature during 24 hr load.
- Electrical Parameter Test: Measure insulation resistance (500 V Megger, >10 MΩ). Verify ground continuity.
- Firmware Verification: Read firmware version. Photograph DIP switch positions.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with date.
BENTLY 330500-02-CN
Replacement Pitfall Guide
❗ Thread Mismatch: The BENTLY 330500-02-CN uses an M8 x 1 thread. Do not force it into 1/2-20 UNF or 1/4-28 UNF housings.
❗ Cable Selection: Ensure you use the correct dual-core shielded cable (e.g., 9571 or 84661 series). Improper cabling introduces noise.
❗ Mounting Surface: Verify the machine casing is flat and clean. Mounting on a curved or uneven surface degrades high-frequency response.
❗ Integration: This sensor typically connects to 3500/42M modules or 1900/65A monitors. Verify your monitoring system accepts velocity inputs.
❗ ESD & Handling: Use anti-static mat. Dry environments increase failure risk during handling.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- 330500-02-CN → 330500-02-00 : Direct — identical sensor, different certification
- 330500-02-CN → 330500-01-CN : Needs Adaptation — 1/2-20 UNF thread
- 330500-02-CN → 330525-02-CN : Direct — enhanced environmental protection (IP65)
Benchmarks:
- Signal-to-noise ratio: >60 dB (calibrated system)
- Temperature drift: <0.5 mV/°C (compensated design)
