PROXPAC XL Proximity Transducer | 330881-BR-07-155-06-02 | Bently Nevada

Technical Specifications

The Bently Nevada 330881-BR-07-155-06-02 is a PROXPAC XL Proximity Transducer, primarily used for non-contact real-time monitoring of shaft vibration, shaft displacement, and speed in critical industrial rotating machinery. It is suitable for heavy-duty steam turbines, high-power compressors, and other equipment with thick bearing housings or where the mounting point is far from the shaft surface.

The heat dissipation advantages of the 70 mm long base: Choosing a 70 mm long base (option 07) provides excellent insulation and heat dissipation buffering. The 7 cm long aluminum alloy or PPS base adapter increases the physical distance between the main body of the housing and the hot casing, utilizing external air convection to reduce heat conduction.

Cavity temperature control: The insulation of the 70 mm base successfully controls the operating temperature of the electronic components inside the housing within the safe limit of 100°C. If a short base of 40 mm (04) is mistakenly used on such a high-temperature cylinder, the strong heat conduction will cause the preamplifier circuit board to overheat for a long time.

Heavy-duty armored installation for the -06 interface option

Armor Clamp for armored cables: When leading from the -06 stainless steel reducer, the field usually directly connects to a three-core shielded cable with wire armor or steel tape armor. The steel wire armor layer must be firmly clamped to the metal ring inside the connector to achieve mechanical tensile protection and equipotential grounding of the outer casing.

Barrier Gland Mandatory Application: If the 155 mm sensor is installed at a Zone 0, -06 interface, a barrier gland explosion-proof sealing connector must be used. On-site, a two-component explosion-proof sealant or epoxy resin must be mixed and manually injected into the connector to completely seal the gaps between the cable cores.

Technical FAQ

Q: What usually causes waveform clipping in the dynamic measurement signal of 330881-BR-07-155-06-02?
A: It's usually because the shaft vibration amplitude is too large, causing the distance between the probe and the target to exceed its standard linear measurement range of 2.0 mm.

Q: What Bentley official tools are needed to test the channel static performance of 330881-BR-07-155-06-02 in the field?
A: A Bentley official TK-3 (or TK3-2e) eddy current calibrator is needed for multi-point gap voltage calibration.

Q: How should the signal transmission cable of 330881-BR-07-155-06-02 be grounded on a coastal offshore drilling platform?
A: The cable shield should be grounded at a single point at the control cabinet end, and not at the field end of the integrated housing, to prevent ground loop interference.

Q: Since the 330881-BR-07-155-06-02 measures eddy current loss, will the coating on the shaft surface (such as chrome plating) affect its accuracy?
A: Yes, any non-uniform metal surface of different materials will severely distort the electromagnetic field. The coating material must be recalibrated before use.

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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