Product Overview

The 330709-000-120-10-02-00, also cataloged as the 330709-000-120-10-02-00 Proximity Probes, operates as a dedicated hardware component for signal processing or control execution within industrial automation architectures. This 11 mm probe is designed for non-contact measurement of rotor displacement and vibration. As a central element of the 3300 XL transducer system, it converts the mechanical position of a shaft relative to the probe tip into an electromagnetic field perturbation. This signal is processed by a matched Proximitor sensor, providing the high-precision output required for monitoring rotor dynamics and protecting rotating machinery from mechanical failure.

Technical Specifications

Brand-Specific Technical Block

The 3300 XL 11 mm system utilizes eddy current probe scaling to ensure linear signal output. Precise gap voltage validation is mandatory during installation; the midpoint of the mechanical range must correspond to a -10 VDC bias at the Proximitor sensor output. The 11 mm design offers a larger linear measurement range compared to standard 8 mm probes, making it suitable for applications with higher expected displacement. Maintaining the integrity of the transducer loop (probe, extension cable, and Proximitor) is essential to preserve the calibrated scale factor and prevent phase shifts that could degrade the accuracy of vibration signal processing.

Ordering Information

• 1 x 330709-000-120-10-02-00 Proximity Probe
• 1 x Mounting nut
• 1 x Connector protector
• 1 x Installation manual

Installation Guidelines

• Grounding: The cable shield must be grounded only at the monitoring system end to eliminate ground loop currents that interfere with the low-level signal.
• Wiring: Maintain a minimum bend radius of 25 mm for the coaxial cable. Do not crimp or crush the cable during installation.
• Shielding: Route probe cabling in dedicated conduits, separated from high-voltage AC lines to prevent induced electromagnetic interference.
• Backplane/Mechanical: Ensure the probe is installed with at least 5 threads of NPT or metric engagement in a rigid, vibration-isolated mount.
• Environmental: Verify that the target material surface is free from debris, coatings, or oil accumulation, as these factors alter the eddy current field and bias the measurement.

Frequently Asked Questions

• Q: Can the probe be hot-swapped while the system is energized?

  A: No. Disconnecting the ClickLoc connector while the Proximitor is powered may produce transient voltage spikes, which can damage the Proximitor internal circuitry.

• Q: How does cable length influence system performance?

  A: The transducer loop is factory-tuned. Any deviation from the specified 1.0 meter system length will shift the resonant frequency and invalidate the output scale factor.

• Q: Is this probe compatible with non-3300 XL sensors?

  A: No. The probe, extension cable, and Proximitor sensor must be from the same series to ensure impedance matching and signal linearity.

• Q: What is the backplane load for this probe?

  A: The probe itself is passive. Power is supplied by the associated Proximitor sensor, which should be accounted for in the system power budget.

• Q: Can I shorten the coaxial cable in the field?

  A: No. Field-modifying the cable length alters the impedance and introduces signal reflections, leading to inaccurate data.

• Q: How do I identify a faulty connection?

  A: Monitor the gap voltage at the Proximitor. Values near 0 V or -24 V indicate an open circuit or a short circuit in the transducer loop, respectively.

• Q: Does this probe require firmware updates?

  A: No. As an analog sensing component, it contains no firmware. Calibration is strictly handled through the Proximitor and monitoring system settings.

• Q: How is signal isolation maintained?

  A: The transducer system is galvanically isolated from the machinery frame at the Proximitor level to prevent potential differences from biasing the signal output.

Engineering Rules

• NPT or metric thread engagement must be locked with a jam nut to prevent loosening due to continuous machine vibration.
• Coaxial resistance must be measured during commissioning to ensure the loop integrity is within the manufacturer's specified ohm-range.
• Installation must avoid high-frequency RFI sources, as these can modulate the eddy current field and induce false vibration signals.