21504-00-32-10-02 | Bently Nevada 8 mm Probe Proximity Vibration Transducer

Introduction to the Bently Nevada 21504-00-32-10-02

When unplanned machinery downtime threatens production targets, the 21504-00-32-10-02 provides reliable vibration measurement. This Bently Nevada probe proximity transducer is part of the 7200 series and delivers accurate displacement data. It is designed for industrial environments where continuous monitoring is essential.

Key Features and Technical Specifications

• Power requirement: -17.5 Vdc to -26 Vdc at 12 mA maximum consumption.
• Calibrated range: 80 mils (2.0 mm), beginning at approximately 10 mils (0.25 mm) from the probe face.
• Scale factor: 200 mV/mil (7.87 V/mm), ±4% when calibrated as a system.
• Linearity: Within 0.8 mils (0.02 mm) of a 200 mV/mil straight line if calibrated as a system.
• Frequency response: 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz (600,000 cpm).
• Temperature sensitivity: Typically -3% change in scale factor at +150°F (+65°C) at 50 mils gap (1.27 mm).
• Operating temperature for probe and extension cable: -30°F to +350°F (-34°C to +177°C).
• Relative humidity: To 95%, noncondensing.
• System weight: 1.3 lbs (0.59 kg).
• Probe diameter: 8 mm with 3/8-24 threads.

The distinctive scale factor of 200 mV/mil ensures consistent output across the calibrated range, reducing the need for frequent recalibration.

Real-World Applications

Engineers use the 21504-00-32-10-02 to monitor shaft vibration in turbines, compressors, and pumps. Its corrosion resistance for 8 mm probes allows direct contact with air, water, lube oil, and several chemicals. This makes it suitable for harsh industrial environments where reliability is critical.

Installation and Setup

Mount the probe with the specified 3/8-24 threads and ensure the unthreaded length is 0 mm. The total length of 1.0 meter (39 inches) provides flexibility for routing. Connect using the miniature male coaxial connector. Verify the gap setting starts at approximately 10 mils (0.25 mm) from the probe face for optimal performance.

Maintenance and Reliability

Regular inspection of the probe and cable helps maintain measurement accuracy. The system operates reliably within the specified temperature and humidity limits. Periodic verification of the scale factor and linearity ensures consistent results over time.

Compatibility and Integration

The 21504-00-32-10-02 integrates with Bently Nevada 7200 proximity transducer systems. It is compatible with standard monitoring racks and data acquisition units. Use it as part of a complete vibration monitoring solution for rotating machinery.

Troubleshooting and Common Issues

If output readings drift, check the gap setting and verify the power supply is within -17.5 Vdc to -26 Vdc. Ensure the probe face is clean and free from debris. For linearity issues, confirm the system calibration matches the specified ±4% tolerance.

FAQ about the 21504-00-32-10-02

Q: What is the calibrated range of the 21504-00-32-10-02?

A: The calibrated range is 80 mils (2.0 mm), beginning at approximately 10 mils (0.25 mm) from the probe face.

Q: What power supply is required?

A: The device requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption.

Q: What is the frequency response?

A: The frequency response is 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz (600,000 cpm).

Q: What is the operating temperature for the probe?

A: The probe and extension cable operate from -30°F to +350°F (-34°C to +177°C).

Q: What is the scale factor?

A: The scale factor is 200 mV/mil (7.87 V/mm), ±4% when calibrated as a system.

Product Support and Availability

The Bently Nevada 21504-00-32-10-02 is available in new and original factory packing. In stock and ready to ship from Petro Auto Tech. Please verify current lifecycle status and availability before ordering.