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

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

Global PLC Spare HUB’s Insight

• The Bently Nevada 26530 is a sophisticated "Two-in-One" monitoring solution for critical machinery.
• By housing both a 3300 XL 8mm proximity probe and a Velomitor, it calculates Shaft Absolute Vibration.
• This is vital for heavy-duty turbines where the bearing housing itself may be moving.
• The 26530-12-05-03-018-112-24-03-00 features a specialized 11.2-inch penetration for deep-reach casing requirements.
• It bridges the gap between casing-mounted velocity sensors and shaft-relative displacement probes.

26530-12-05-03-018-112-24-03-00 Configuration Breakdown

26530 — Dual Probe Transducer System
 |_ -12- Proximity Probe: 3300 XL 8 mm sensor integrated
    |_ -05- Probe Lead Length: 0.5 Metre cable
        |_ -03- Adapter Thread: 3/4-14 NPT heavy-duty mounting
            |_ -018- Adapter Length: 1.8 inches
                |_ -112- Penetration: 11.2 inches (Deep-reach profile)
                    |_ -24- Velocity Sensor: Velomitor (Piezo-velocity) technology
                        |_ -03- Fittings: Dual 3/4-14 NPT plug and fitting set
                            |_ -00- Oil Seal: Not required for this assembly

Technical Specifications

• Brand: Bently Nevada
• Model: 26530-12-05-03-018-112-24-03-00
• Primary Function: Concurrent measurement of Shaft Relative and Casing Absolute vibration.
• Shaft Measurements: Relative radial position and dynamic motion (displacement).
• Casing Measurements: Absolute vibration (velocity) via internal **Velomitor**.
• Summation Data: Provides Shaft Absolute motion by combining seismic and relative signals.
• Temperature Range (Probe): -51°C to +177°C (-60°F to +351°F).
• Temperature Range (Velomitor): -55°C to +121°C (-67°F to +250°F).
• Interface: Designed for integration with Bently Nevada 3500 monitoring racks.

Typical Equipment & Application

• Hydro-Turbines: Critical for machines with high casing-to-shaft mass ratios.
• Centrifugal Compressors: Used in X-Y configurations for full orbit analysis.
• Large Steam Turbines: Essential for tracking absolute shaft centerline position.
• Heavy-Duty Pumps: Monitoring vibration in high-pressure oil-sleeve bearing housings.

Diagnostic Capabilities

• Orbit Analysis: Direct visualization of shaft movement within the bearing clearance.
• Resonance Detection: Distinguishes between rotor unbalance and structural casing resonance.
• Centerline Tracking: Accurate tracking of shaft position relative to the bearing during startup.
• Absolute Vibration: Eliminates "blind spots" caused by moving bearing pedestals.

Global PLC Spare HUB Review

The 26530-12-05-03-018-112-24-03-00 is an engineering-grade solution for complex vibration environments. The 11.2-inch penetration allows it to reach through thick machine casings to the bearing surface. We emphasize that this 26530 system should be installed in X-Y pairs (90 degrees apart) to unlock the full diagnostic potential of the 3300 XL 8mm probe technology.

Commercial Terms & Logistics

• Warranty: Industry-standard 12-month quality assurance.
• Shipping Partners: Rapid dispatch via FedEx, UPS, or DHL.
• Handling Time: Order processing is completed within 24-48 hours.

FAQ & Professional Guidance

Why is "Shaft Absolute" vibration better than "Shaft Relative"?

If the bearing housing is vibrating significantly, a relative probe alone might underestimate the total motion. The 26530 adds casing velocity back into the measurement for the true absolute value.

Can I replace the internal Velomitor without replacing the whole 26530 system?

The system is integrated for mechanical alignment. While components are theoretically modular, we recommend replacing the assembly to maintain calibration and seal integrity.

Is the 11.2-inch penetration length adjustable in the field?

No. Penetration depth is fixed based on the -112- option. Verify your machine dimensions exactly before ordering to ensure the tip reaches the target gap.

What happens if the operating temperature drops below -34°C?

The 3300 XL 8mm probe seal may become brittle. If used in extreme cold, monitor for oil leaks at the adapter junction.

Selection Guidance: When should I choose the Velomitor (Option 24) over a Seismoprobe?

The Velomitor (Piezo-velocity) is superior for high-frequency noise rejection and has no moving parts to wear out. Choose Option 24 for modern, low-maintenance monitoring.

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