330303-006-10-90-00-00 Bently Nevada High Temperature Probe In Stock

High-Temperature Physical Architecture & Design

Bently Nevada 330303-006-10-90-00-00 Proximity Probe Engineering

The 330303-006-10-90-00-00 is an extreme-environment 3300 XL high-temperature proximity probe designed by Bently Nevada for non-contact shaft displacement and vibration measurement in high-thermal-stress turbomachinery. Built around a high-purity ceramic probe tip and AISI 316L stainless steel smooth case, this sensor handles extreme process temperatures ranging from -34°C up to +350°C (-30°F to +662°F).

Featuring a 1.0-meter hardline cable transition extending into a matched 9.0-meter system configuration, the probe yields a calibrated scale factor of 3.94 V/mm (100 mV/mil) across a 4.0 mm (160 mil) linear measurement range. The hardline construction isolates internal conductors from thermal degradation, maintaining signal integrity under heavy thermal cycling.

Configuration Identification Tree

330303 [3300 XL High Temperature Proximity Probe, Smooth Case]
├── -006 : Overall Case Length Option
│   └── 0.6 in (15.2 mm) Case Length
├── -10 : Hardline Length Option
│   └── 1.0 meter (3.3 feet) Armored Hardline Cable
├── -90 : Total System Length Option
│   └── 9.0 meters (30 feet) Matched Probe + Extension Cable
├── -00 : Extension Cable Armor Option
│   └── Standard Unarmored Extension Cable
└── -00 : Agency Approval Option
    └── Unapproved / Standard Area Installation

Engineering Performance Matrix

Process Machine Integration & Diagnostic Capabilities

Turbomachinery Application Suitability

• Target Equipment Installations: High-pressure steam turbine exhaust casings, industrial gas turbine combustor zones, hot gas expanders, boiler feed pumps, and high-temperature process compressors.
• Thermal Growth & Thrust Measurement: The 4.0 mm (160 mil) extended linear range tracks large thermal rotor growth and axial shaft movement during cold startup to full-load stabilization cycles.
• Radial Shaft Dynamic Monitoring: Captures high-frequency shaft vibration up to 6 kHz inside hot bearing housings, isolating rotor imbalance, thermal bow, and dynamic instability.
• Ceramic Tip Thermal Shielding: The ceramic tip prevents mechanical deformation and dielectric changes under direct exposure to radiant process heat up to 350°C.
• DC Resistance Loop Verification: Field troubleshooting via simple multimeter DC resistance checks against the 5.06 Ω nominal baseline flags conductor opens or insulation breakdown caused by cable crushing.

Global PLC Spare HUB's Insight

Field Engineering & Installation Guidance

• The 330303-006-10-90-00-00 provides a specialized solution when standard FEP-insulated probe tips fail due to elevated ambient temperatures inside turbine housings.
• Because this sensor uses a 100 mV/mil scale factor (3.94 V/mm) instead of the standard 200 mV/mil (7.87 V/mm) standard, ensure the connected 3300 XL Proximitor sensor is calibrated for 100 mV/mil high-temperature probe curves.
• Avoid bending the 1.0-meter hardline cable section beyond its minimum bend radius during installation to protect the internal mineral-insulated structure from conductor shorting.
• Match the 9.0-meter total system length requirement precisely; mixing components from 5-meter or 1-meter systems shifts system electrical length, resulting in severe scale factor errors.

Logistics & Commercial Warranty

Dispatch Protocol

• Supplied with full coverage under a 12-month functional warranty.
• Global express fulfillment via FedEx, UPS, and DHL.
• Packaged in protective ESD containment and heavy-duty shipping materials to safeguard hardline cable integrity during transit.

Frequently Asked Questions (FAQ)

Technical Selection & Diagnostic Guidance

Q: How does the 100 mV/mil scale factor on this high-temperature model impact monitor rack configuration?
A: Configure the monitoring channel settings in your Bently Nevada 3500 rack software for a 3.94 V/mm (100 mV/mil) sensitivity input rather than the standard 200 mV/mil option to ensure accurate mil-displacement logging.

Q: What mounting hardware is recommended for a smooth-case probe housing?
A: Use a high-temperature split-clamp mounting block or smooth-bore gland adapter torqued evenly around the 316L stainless steel body to prevent casing deformation.

Q: Why is a ceramic tip used instead of standard Polyphenylene Sulfide (PPS)?
A: Ceramic materials maintain structural hardness, dimensional stability, and stable dielectric properties at continuous operating temperatures up to 350°C where PPS plastics soften and fail.

Q: How can field engineers verify hardline cable health without removing the probe?
A: Measure DC resistance between the center conductor and outer conductor using a multimeter; readings near 5.06 Ω indicate intact internal winding circuits.

Q: What causes measurement scale factor error if extension cables are swapped?
A: Eddy current proximity systems rely on matched inductance and capacitance; altering total system cable length away from the calibrated 9.0-meter specification detunes the Proximitor oscillator circuit.

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