330902-00-40-10-02-00 | Bently Nevada | 3300 NSv Proximity Probes

Bently Nevada 330902-00-40-10-02-00 3300 NSv Proximity Probes

Configured for rotor‑to‑probe displacement measurement in 3300 NSv monitoring chains, the Bently Nevada 330902-00-40-10-02-00 (330902 proximity probe) provides direct physical sensing through an eddy‑current measurement loop. The probe assembly establishes a controlled impedance path and stable gap‑voltage behavior required for NSv signal conditioning.

Suffix Breakdown & Model Matrix

• 330902 = 3300 NSv probe, 1/4‑28 UNF thread, armored
• 00 = Unthreaded length 0 in
• 40 = Case length 4.0 in
• 10 = Total length 1.0 m (3.25 ft)
• 02 = Miniature coaxial ClickLoc connector, standard cable
• 00 = No agency approval required

Hardware Specifications

Eddy‑Current Scaling and Gap‑Voltage Stability

The probe maintains calibrated eddy‑current scaling across the NSv measurement chain, ensuring consistent displacement interpretation when paired with matched extension cables and proximitor modules. Gap‑voltage validation aligns with the standard −10 VDC target used in NSv systems, supporting stable rotor‑dynamic tracking. Controlled coaxial impedance and shielding minimize cross‑talk, preserving linearity across the operational frequency range.

Frequently Asked Questions

Q: Can the probe be hot‑swapped while the proximitor remains energized? A: No. Removing or installing the probe under excitation may cause transient gap‑voltage excursions and should be avoided.

Q: Does changing cable length affect calibration? A: Yes. Probe, extension cable, and proximitor lengths are factory‑matched. Any deviation alters impedance and displacement scaling.

Q: Is the ClickLoc connector torque‑critical? A: The connector requires full seating but does not rely on a torque specification. Positive engagement ensures signal integrity.

Field Installation Guidelines

Maintain gentle cable bend radii to preserve coaxial impedance. Route the armored cable away from high‑current conductors to reduce electromagnetic interference. Bond shielding at the proximitor end only to prevent ground‑loop formation. Ensure full engagement of the 1/4‑28 UNF threaded section for mechanical stability. Apply strain relief to minimize vibration‑induced micro‑motion that may affect rotor‑dynamic phase accuracy.