Introduction

The Bently Nevada 21500-00-28-10-02 7200 5 mm Probe is intended for proximity sensing applications in industrial machinery monitoring. Probe-based measurement systems help track relative shaft movement and provide information that supports vibration analysis, condition assessment, and machinery protection.

For facilities maintaining existing monitoring installations, accurate part identification is particularly important. A probe with a different diameter or electrical configuration may not provide the required measurement performance, even if its physical appearance is similar.

When sourcing this component, confirm the complete model number and verify compatibility with the existing driver electronics, cabling, mounting arrangement, and monitoring equipment. This helps reduce replacement errors and supports a more efficient maintenance process.

We support industrial automation and machinery monitoring spare-parts sourcing for maintenance teams, service providers, and industrial facilities. Contact us with your part number and equipment details to discuss availability and replacement requirements.

Technical Specifications

Parameter	Specification
Brand	Bently Nevada
Model	21500-00-28-10-02
Product Series	7200 Series
Product Type	5 mm Probe
Probe Diameter	5 mm
Shipping Weight	3 kg / 6.61 lb
Measurement Principle	Proximity-based sensing, subject to system configuration
Typical Application	Rotating machinery condition monitoring
Installation	According to the applicable equipment documentation
System Compatibility	Must be verified against the installed monitoring system

Note: The supplied 3 kg value is the shipping weight, not necessarily the weight of the probe itself. Confirm the exact probe length, mounting thread, cable configuration, and electrical specifications before ordering.

Recommended Related Models

The following Bently Nevada product families are relevant to proximity sensing and machinery monitoring. They are not confirmed direct replacements for the 21500-00-28-10-02.

Model / Series	Product Type
Bently Nevada 7200 Series	Proximity probe and monitoring components
Bently Nevada 3300 XL 8 mm	Proximity measurement system
Bently Nevada 3300 XL Proximitor Sensor	Proximity signal-conditioning component
Bently Nevada 3300 XL Extension Cable	Proximity system cable

Confirm series compatibility before combining probes, extension cables, and driver electronics.

Popular Related Models

Bently Nevada provides a broad range of equipment for machinery protection and condition monitoring. The following models may be relevant to related maintenance projects.

Model / Series	Product Type
Bently Nevada 3300 XL 8 mm	Proximity probe system
Bently Nevada 3300 XL 11 mm	Proximity probe system
Bently Nevada 3500/42M	Proximity and seismic monitoring module
Bently Nevada 3500/22M	Transient Data Interface module
Bently Nevada 3500 Series	Machinery monitoring and protection system

These products have different functions and compatibility requirements. Verify the specific part number and installed system configuration before choosing replacement components.

Applications

The Bently Nevada 21500-00-28-10-02 7200 5 mm Probe is an industrial proximity probe component intended for applications involving rotating machinery monitoring. Proximity probes are commonly used to measure the relative position of a conductive shaft, providing displacement signals that can help assess vibration and machine operating conditions.

In power generation, oil and gas, and process industries, reliable shaft monitoring is important for identifying mechanical changes and supporting equipment protection strategies. When paired with compatible driver electronics and monitoring equipment, a proximity probe can contribute to continuous condition monitoring and maintenance diagnostics.

Typical application areas include:

Turbine and compressor shaft displacement monitoring
Industrial pump and motor condition assessment
Rotating machinery vibration monitoring
Machinery protection and diagnostic systems
Maintenance and replacement of compatible legacy monitoring equipment

Before selecting this probe, verify that its dimensions, electrical characteristics, and system compatibility match the installed 7200 Series configuration.

Advantages

Compact sensing diameter: The specified 5 mm diameter may suit installations designed for a probe of this size, subject to verification of the complete mechanical configuration.

Non-contact measurement: Eddy-current proximity technology measures the gap between a probe and a conductive target without requiring physical contact during normal operation.

Supports condition monitoring: Shaft displacement signals can help maintenance teams evaluate machine behavior and investigate changes in vibration or shaft position.

Clear part identification: Using the complete model number helps reduce confusion when sourcing replacement components for existing machinery monitoring systems.

Useful for maintenance planning: Having the correct probe available can help streamline scheduled servicing and reduce delays during equipment repairs.

For dependable results, the probe must be installed with compatible electronics, the appropriate mounting arrangement, and the correct operating gap.

Technical FAQs

Q1: What is the Bently Nevada 21500-00-28-10-02 7200 5 mm Probe used for?

It is identified as a 7200 Series 5 mm probe for industrial machinery monitoring. Proximity probes are commonly used to measure relative shaft position or displacement in compatible rotating equipment.

Q2: How does a proximity probe measure shaft movement?

An eddy-current probe produces an electromagnetic field near a conductive target. Changes in the gap between the probe tip and the target alter the electrical response, which compatible electronics convert into a displacement-related signal.

Q3: Does this probe require separate driver electronics?

A conventional eddy-current proximity probe requires compatible driver or signal-conditioning electronics to provide a usable measurement signal. The exact requirements should be verified for this model.

Q4: Can this 5 mm probe replace an 8 mm probe?

Not automatically. Probe diameter, electrical characteristics, calibration, mounting, and system compatibility can differ. Use only a replacement approved for the specific monitoring installation.

Q5: Which equipment can use this probe?

Depending on the installed system and mechanical arrangement, proximity probes may be used with turbines, compressors, pumps, motors, and other rotating machinery.

Q6: What should be checked before installing the probe?

Confirm the complete part number, probe diameter, mounting thread, connector arrangement, cable configuration, required driver electronics, and equipment documentation.

Q7: What can cause an unstable probe signal?

Possible causes include an incorrect operating gap, damaged wiring, loose connections, electrical interference, unsuitable target material, or a mismatch between the probe and its driver electronics.

Q8: Does the probe need a specific operating gap?

Yes. The gap must be set within the range specified for the compatible probe system. Follow the applicable installation and calibration instructions.

Q9: Can the probe directly measure vibration velocity?

A proximity probe typically measures relative displacement or shaft position. Vibration velocity may be derived by compatible monitoring equipment from the displacement signal, depending on the system configuration.

Q10: What should be verified after installation?

Check the mounting, wiring, operating gap, signal output, and monitoring-channel configuration. Confirm that the readings are consistent with the equipment's specified operating conditions before returning the machine to service.

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