26530-12-05-03-018-112-24-03-00 | Bently Nevada Dual Probe System

Introduction to the 26530-12-05-03-018-112-24-03-00

When machine reliability depends on accurate vibration data, the 26530-12-05-03-018-112-24-03-00 from Bently Nevada delivers a complete measurement solution. This Dual Probe Transducer System integrates a proximity probe and a seismic or Velomitor transducer in a common housing, allowing you to capture both shaft-relative and casing-absolute vibration from a single mounting point.

Because the system is designed for permanent installation on bearing housings or covers, it provides continuous, real-time data for condition monitoring and diagnostics. Whether you are protecting critical rotating machinery or optimizing maintenance schedules, this transducer system offers a reliable foundation for your monitoring strategy.

Key Features of the Bently Nevada 26530-12-05-03-018-112-24-03-00

The 26530-12-05-03-018-112-24-03-00 is engineered to deliver four distinct measurements from one assembly:

• Shaft relative radial position (displacement) measured by the proximity probe.
• Shaft relative radial dynamic motion (vibration) measured by the proximity probe.
• Machine casing absolute vibration measured by the seismic sensor.
• Shaft absolute motion, derived by summing the integrated seismic signal with the shaft relative displacement.

This multi-parameter capability is essential for comprehensive machinery analysis, including orbit plots and shaft centerline position tracking. For full radial bearing diagnostics, two Dual Probe assemblies in an X-Y configuration are recommended.

An optional probe support/oil sleeve protects the system from oil and provides extra support for the probe sleeve, enhancing long-term stability in harsh environments.

Applications for the 26530-12-05-03-018-112-24-03-00

This transducer system is ideal for turbomachinery, compressors, pumps, and other rotating equipment where both shaft and casing vibration must be monitored simultaneously. By combining two sensor types in one housing, you reduce installation complexity and improve measurement correlation.

In addition, the ability to measure shaft absolute motion is valuable for machines where casing vibration is significant, such as those with flexible foundations or high-speed rotors. The X-Y configuration enables orbit analysis, helping engineers identify preload, rub, and instability issues early.

Installation and Setup Guidance

Proper mounting is critical for accurate readings. The transducer housing should be mounted on a portion of the bearing housing or cover that is mechanically referenced to the bearing. This ensures that the seismic sensor captures true casing vibration and the proximity probe sees consistent shaft motion.

For the 26530-12-05-03-018-112-24-03-00, the adapter thread is 3/4-14 NPT, and the adapter length is 1.8 inches. The probe penetration is 11.2 inches, with a 0.5-meter probe lead. Follow the manufacturer's instructions for torque and clearance to avoid measurement errors.

When routing cables, avoid sharp bends and excessive strain. Use appropriate conduit or cable trays to protect leads from mechanical damage and environmental exposure.

Maintenance and Reliability

Regular inspection of the transducer system helps ensure consistent performance. Check for signs of wear, corrosion, or loose connections, and verify that the mounting remains secure. The optional probe support/oil seal can extend service life in oil-lubricated environments.

Because the system is exposed to process temperatures, monitor the operating environment against the specified temperature ranges. For the 3300 XL 8 mm probe, the range is -51°C to +177°C, but note that exposure below -34°C may affect the pressure seal. The Velomitor transducer operates from -55°C to +121°C, while standard and high-temperature Seismoprobe versions cover -29°C to +121°C and -29°C to +204°C, respectively.

Following the manufacturer's maintenance manual and scheduling periodic calibration checks will maximize measurement accuracy and system lifespan.

Compatibility and Integration

The 26530-12-05-03-018-112-24-03-00 is part of the Bently Nevada family of monitoring systems. It is designed to interface with Bently Nevada monitors and diagnostic equipment, but specific compatibility details should be confirmed with the manufacturer or Petro Auto Tech.

For new installations, verify that the probe lead length (0.5 meter) and adapter dimensions match your machine's configuration. The system is available with a Velomitor sensor, which is suitable for casing vibration measurement.

Why Choose This Dual Probe System?

By combining two sensor types into one housing, the 26530-12-05-03-018-112-24-03-00 simplifies installation and reduces the number of mounting points required. This can lower overall cost and improve data consistency.

Furthermore, the ability to measure both relative and absolute shaft motion gives you a more complete picture of machine dynamics. This is especially valuable for diagnosing complex vibration issues that require both proximity and seismic data.

Frequently Asked Questions

Q: What measurements can the 26530-12-05-03-018-112-24-03-00 provide?

A: It provides shaft relative radial position, shaft relative radial vibration, casing absolute vibration, and shaft absolute motion.

Q: What is the temperature range for the 3300 XL 8 mm probe?

A: The probe operates from -51°C to +177°C, but exposure below -34°C may cause premature failure of the pressure seal.

Q: Does the system include a probe support/oil seal?

A: The option is available but not included in this configuration (option H is not required).

Q: What is the recommended configuration for orbit analysis?

A: Two Dual Probe assemblies in an X-Y configuration are required per radial bearing.

Availability and Support

The 26530-12-05-03-018-112-24-03-00 is available through Petro Auto Tech. Contact our team to confirm current stock and lead times. We are here to help you select the right monitoring solution for your machinery.