3300 XL 25 mm Proximity Probe | 330851-02-000-60-10-00-05 | Bently Nevada

Technical Specifications

The Bently Nevada 330851-02-000-60-10-00-05 is a 3300 XL 25 mm Proximity Probe. It is primarily used for differential expansion measurement in large steam turbine generators, monitoring the relative expansion between the rotor and the casing in a non-contact manner. This probe is environmentally adaptable and supports continuous operation at high temperatures.

High Interchangeability and Corrosion Resistance: The probe head is made of high-grade PEEK engineering plastic, and the main body of the housing is precision-machined from AISI 304 stainless steel. This allows it to operate stably for extended periods in the high-pressure, high-temperature steam and turbine oil environments inside steam turbines at 200°C.

More Ample Alignment Adjustment: Compared to the shorter 30 mm housing, the 60 mm full-thread length provides field technicians with significantly more adjustment space on the support, making it easier to align the initial cold clearance to the recommended 6.35 mm, eliminating the hassle of repeatedly adjusting shims.

Field Installation Interference Prevention and Critical Dimensions

Due to the large area of the alternating eddy current magnetic field released by the 25 mm probe, the physical space limitations specified by Bentley must be strictly adhered to during installation; otherwise, the linearity of the measurement (0.787 V/mm) will be severely affected.

No unrelated metal structures are permitted within a 76 mm radius around the probe head. If two 25 mm probes are installed on the same side for redundant expansion difference measurement, the center distance between the two probes should not be less than 203 mm to prevent crosstalk.

Technical FAQ

Q: What is the rated operating temperature of the 330851-02-000-60-10-00-05 probe under continuous high-temperature operation?
A: Its probe head and integrated cable can operate stably for extended periods in extreme continuous high-temperature environments ranging from -35°C to +200°C.

Q: What is the upper limit of peak heat that the 330851-02-000-60-10-00-05 probe can withstand in a very short-term, sudden heat wave?
A: Its short-term withstand limit (maximum 24 hours) can reach up to +250°C.

Q: What is the typical conductor resistance of the 330851-02-000-60-10-00-05 probe cable at a room temperature of 25°C?
A: The typical impedance of its integrated 1.0-meter signal cable is approximately 6.2 ohms (±0.5 ohms).

Q: What high-durability physical RF connector is equipped at the end of cable 330851-02-000-60-10-00-05?
A: The end is equipped with a gold-plated, two-stage coaxial locking high-frequency miniature connector.

Q: Are your products brand new?
A: Yes. We only supply 100% original and brand-new products. All items are sourced through authorized channels and have never been used or refurbished.

Q: Why can customers buy with confidence?
A: Because every product is backed by our 1-Year Warranty Guarantee of Quality, ensuring reliability, customer satisfaction, and long-term support after delivery.

Q: Do you provide international shipping?
A: Yes. We ship products to customers worldwide using reliable international logistics services such as EMS, DHL, UPS, and FedEx.

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