The Bently Nevada 330703-020-100-90-02-00, also cataloged as the 330703 Proximity Probes, operates as a dedicated hardware component for non-contacting vibration and displacement measurement within 3300 XL Machinery Protection Systems. The component tracks long-range static and dynamic displacement parameters by establishing a radio-frequency eddy-current field between the 11 mm sensor head and a conductive target, outputting a highly linear analog signal to downstream monitor channels.

Model Matrix Selection

• 330703: 3300 XL 11 mm Proximity Probe, M14 x 1.5 thread, smooth case without armor

• -020: Unthreaded length option (20 mm)

• -100: Overall case length option (100 mm)

• -90: Total length option (9.0 meters / 29.5 feet)

• -02: Connector option (Miniature coaxial ClickLoc connector with connector protector)

• -00: Agency approval option (Standard execution, no regional hazardous area certifications)

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Stability

The 11 mm tip configuration alters eddy-current probe scaling to deliver twice the linear range of standard 8 mm elements, facilitating extended tracking across large thermal growth profiles. Field installation requires executing gap voltage validation targeting a -10 VDC baseline, centering the physical alignment within the 160 mil operating envelope. In machinery setups monitoring low-frequency rotor dynamics, multi-probe proximity arrays must enforce cross-talk suppression safety boundaries. Parallel 11 mm installations require maintaining a minimal physical probe-to-probe center separation distance of 76.2 mm to isolate adjacent high-frequency radio fields from inductive overlap.

Kit Inventory

• 1 x Bently Nevada 330703-020-100-90-02-00 Proximity Probe

• 1 x Pre-installed ClickLoc Coaxial Connector Protector Sleeve

• 2 x M14 x 1.5 Hex Lock Jam Nuts

• 1 x Factory Performance Calibration Log Sheet

Field Installation Guidelines

Physical installation requires rigid mechanical alignment to prevent mounting resonance from distorting high-frequency displacement signals.

1. Check the clean, tapped M14 x 1.5 housing entry channel. Thread the sensor body manually to verify smooth engagement over the 100 mm case length.

2. Interconnect the 9.0-meter integral lead directly to a matched 3300 XL 11 mm Proximitor Sensor, circumventing the need for an independent extension line.

3. Advance the probe head toward the shaft target until a standard digital voltmeter connected at the monitor output verifies gap voltage validation at -10.0 VDC.

4. Torque the provided M14 jam nuts to a maximum limit of 22.6 N-m (200 in-lb). Do not over-torque to prevent mechanical distortion of the thin-walled internal sensor tip.

5. Guide the long 9.0-meter coaxial line along structural machinery members inside clean steel conduit. Ensure the outermost coaxial shield remains isolated from local machine frames to prevent ground loop noise contamination.

Cargo Packing and Dispatch

Delivery time: 2-7 days when payment finish, with international fulfillment managed via DHL, FEDEX, or UPS air networks. All units undergo warehouse isolation inside anti-static industrial packaging using shock-attenuating internal micro-cellular foam cavities to safeguard core alignment profiles and scale calibration properties during global transport.

Transducer System FAQ

Q: Can this 9.0-meter probe assembly be linked to an intermediate extension cable to reach a further rack destination?

A: No. The 330703-020-100-90-02-00 features an internal 9.0-meter total electrical length option. It must be coupled directly to a 9.0-meter version 3300 XL 11 mm Proximitor Sensor without any intermediate extension cables. Adding external lines alters system impedance, destroying the factory calibration matrix.

Q: Is this long-range probe tip compatible with Proximitor electronics designed for standard 8 mm probes?

A: No. Standard 8 mm probes operate on a scale of 200 mV/mil, whereas this 11 mm model utilizes a modified coil geometry optimized for 100 mV/mil eddy-current probe scaling. Cross-connecting components across series lines yields incorrect voltage conversions and trips rack fault loops.

Q: Does disconnecting the ClickLoc interface while the monitor loop is energized damage internal components?

A: No. The passive transducer assembly contains no active semiconductors and operates under low energy conditions. Breaking the connector under a live -24 VDC feed causes no physical damage, though it forces the matched monitoring channel into an instantaneous NOT OK fault condition.