Configured for high-temperature radial vibration measurement in extended temperature range (ETR) turbomachinery protection infrastructure, the Bently Nevada 330194-05-13-10-05, also cataloged as the 3300 XL 8mm Proximity Transducer Proximity Probes, provides direct physical and electrical execution.

Part Number Breakdown & Model Matrix

• Platform Series: Bently Nevada 3300 XL Extended Temperature Range (ETR) high-frequency eddy-current mechanical monitoring architecture.
• Part Catalog Identifier: 330194 designating an 8 mm probe tip configuration engineered for elevated thermal environments.
• Thread Specification: -05 defining specific probe case thread sizing, pitch parameters, and armor configuration options.
• Cable Length and Options: -13-10-05 indicating total system length, connector options, molded fittings, and hazardous area approvals.

Hardware Specifications

Signal Integrity & Rotor Dynamics

The extended temperature proximity transducer preserves eddy-current probe scaling accuracy by maintaining linear radio frequency response across severe thermal gradients and changing metallic target air gaps. Proper gap voltage validation (-10 VDC targets) relies on precise mechanical positioning relative to the rotating shaft journal under high-heat operating conditions. Furthermore, advanced cross-talk suppression shielding prevents high-frequency electromagnetic interference from distorting rotor dynamics and radial displacement telemetry.

Ordering Info

• 1 x Bently Nevada 330194-05-13-10-05 3300 XL ETR Proximity Probe unit
• 1 x High-temperature brass mounting lock nut with safety wire holes
• 1 x Technical reference installation sheet

Mechanical Installation Guidelines

• Thermal Clearance Setup: Thread the ETR probe body into the high-temperature machine mounting bracket, accounting for thermal expansion differentials between casing metals during active operation.
• Voltage Target Calibration: Adjust the probe insertion depth until a digital multimeter reads exactly -10 VDC at the monitor output terminal, establishing the optimal electrical center.
• Shielded Routing: Secure the specialized coaxial cable away from direct radiant furnace heat sources, maintaining proper separation from high-voltage AC motor drives.

Technical Inquiries & Troubleshooting

• Q: How do extreme operating temperatures up to +232 deg C impact the radio frequency signal linearity of this ETR probe?

  A: The specialized internal coil materials and high-temperature polymer housing prevent thermal expansion drift, maintaining stable 200 mV/mil sensitivity under severe heat loads.

• Q: What is the primary electrical consequence if moisture breaches the high-temperature coaxial connector interface?

  A: Moisture ingress introduces high-frequency signal attenuation and capacitive leakage, resulting in severe baseline voltage instability and false vibration alarms.

• Q: Can this 330194 ETR probe tip be paired with standard non-ETR extension cables without causing measurement errors?

  A: No, matching the specific electrical capacitance of ETR-rated system components is critical to preserve proper scale factor calibration and frequency response.

• Q: Why is maintaining precise side-clearance from the mounting hole thread crucial for vibration accuracy?

  A: Adequate radial clearance prevents the electromagnetic field from intersecting adjacent metal boundaries, avoiding side-viewing distortion in the output signal.

• Q: What occurs to the direct current output voltage if the rotating shaft exhibits excessive axial float beyond the linear range?

  A: The output signal rails toward zero or the negative supply limit, causing the monitoring system to register an out-of-range transducer fault condition.

• Q: Why must lock nuts with safety wire holes be utilized during final installation in gas turbines?

  A: Safety wire locks the threaded body in position, preventing continuous engine vibration from altering the pre-set air gap over extended run times.

• Q: How does proper single-point shield grounding at the monitor cabinet protect against electrical noise?

  A: Grounding the outer shield at one reference point shunts induced electromagnetic noise safely to earth without creating parasitic ground loop currents.

• Q: What verification steps are required after installing a replacement ETR probe on an active machine?

  A: Technicians must verify static gap voltage against cold baseline targets and perform dynamic runout checks before clearing the unit for full operational load.