Bently Nevada 330450-20 Sensor | High-Heat Accelerometer

Bently Nevada 330450-20 Accelerometer Overview

The 330450-20 sensor offers fast and stable vibration data.
It suits harsh sites and high heat.
It keeps a clear signal over long cable runs.
Author: Powergear X Automation

Main Features

• Made by Bently Nevada in the U.S.A.
• Sensitivity rated at 10.2 mV/m/s².
• Peak range up to 785 m/s² for strong motion.
• Linearity within ±2% across full span.
• Noise floor at 0.059 m/s² for clean data.
• Wide band: 15 to 10,000 Hz.
• Transverse output stays under 5%.
• Resonant point above 15 kHz.
• Long cable runs up to 305 m.
• Input −24 Vdc with 2 mA draw.
• Bias output at −12 Vdc.
• Case stays isolated for stable grounding.

Environmental Strength

• Sensing head temperature: −55°C to +400°C.
• Cable rated to −55°C to +400°C.
• Electronics safe to +100°C.
• Shock tested to 24,535 m/s².
• Fully sealed housing supports 100% humidity.
• Stainless steel body holds 635 g.
• 3-pin hermetic connector for secure links.
• Minimum bend radius 51 mm.

Hazard Approvals

• Ex ia IIC T4 and AEx ia IIC T4.
• Class I Div 1 Groups A–D.
• Class II Div 1 Groups E–G.
• Class III Div 1 rated.
• Ex nL IIC T4 and Ex ec IIC T4.
• Install per drawing 168078.

Ordering Options

• Base number: 330450-20.
• Series option: 330450-80.
• Length code:
  • 20 = 2 meters.

Extra Technical Notes

• Output stays stable with EMC noise nearby.
• Fast rise time supports impact checks.
• Low drift helps long test cycles.
• Hardline cable resists heat and oil.
• Metal body limits mechanical ringing.

Shipping & Warranty

• Ships via FedEx, UPS, or DHL.
• Comes with a 12-month warranty.
• Includes one sealed sensor and test sheet.

Typical Uses

• High-speed compressors.
• Large turbines and heavy machines.
• Plant spots with high heat.
• Long cable setups.

FAQ

• What happens if the cable run is near power lines?
• The signal may shift. Keep the route away from motors.
• How often should I check the connector seal?
• Check every shutdown to avoid moisture entry.
• Can this unit work on slow-speed machines?
• It works, but low frequencies may need longer sample times.
• Does heat change the bias voltage?
• High heat may move the value. Check at +350°C sites.
• Why do I see drift after long downtime?
• Oil film and dust can shift the base. Clean the mount point.

Contact:
sales@powergearx.com
+86 18030005825

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