21500-00-20-10-02 | Bently Nevada 5 mm Probe Proximity Vibration

Introduction to the 21500-00-20-10-02

When machinery vibration threatens uptime, the 21500-00-20-10-02 from Bently Nevada provides the accurate, real-time data engineers need. This 5 mm probe proximity vibration sensor is part of the 7200 Proximity Transducer Systems family. It offers a calibrated range of 80 mils (2.0 mm) and a scale factor of 200 mV/mil (7.87 V/mm). With a frequency response from 0 to 10 kHz, it captures critical vibration events in rotating equipment.

Key Features & Technical Specs

• Power consumption: -17.5 Vdc to -26 Vdc at 12 mA maximum.
• Calibrated range begins 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 as a system.
• Frequency response: 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz.
• Operating temperature for probe and extension cable: -30°F to +350°F (-34°C to +177°C).
• System weight: 1.3 lbs (0.59 kg).

Applications & Use Cases

Maintenance engineers rely on the 21500-00-20-10-02 for continuous vibration monitoring of turbines, compressors, and pumps. Its 5 mm diameter and standard 1/4-28 threads simplify installation in existing bearing housings. The probe delivers stable readings even in high-humidity environments up to 95% noncondensing. This makes it a robust choice for harsh industrial settings.

Installation & Setup

Mount the probe with the provided 1/4-28 threaded tip. Ensure the gap between probe face and target starts at approximately 10 mils (0.25 mm) for proper calibration. The total length option of 1.0 metre (39 inches) offers flexibility for routing cables. Use the miniature male coaxial connector for secure signal transmission.

Maintenance & Reliability

Periodically inspect the probe and extension cable for physical damage or contamination. Verify the system calibration annually to maintain the ±4% scale factor accuracy. The probe’s corrosion resistance to common industrial fluids like lube oil and water enhances long-term reliability.

Compatibility & Integration

The 21500-00-20-10-02 integrates with Bently Nevada 7200 series monitors and data acquisition systems. Its 200 mV/mil output interfaces directly with standard vibration monitoring modules. For system-level calibration, pair it with the corresponding Proximitor to achieve optimal linearity.

FAQ about the 21500-00-20-10-02

What is the calibrated range of the 21500-00-20-10-02?

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

What is the scale factor and its accuracy?

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

What are the operating temperature limits for the probe?

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

What connector type does the 21500-00-20-10-02 use?

It uses a miniature male coaxial connector (connector option 02).

Product Support & Availability

The 21500-00-20-10-02 is available in new, factory-sealed condition from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Each unit includes a 12-month factory warranty.