Configured for non-contacting vibration and displacement measurement in machinery protection systems, the Bently Nevada 330101-10-27-05-02-00 (330101 Proximity Probe) provides direct physical/electrical execution. The hardware translates mechanical shaft position variations relative to the probe tip into proportional electrical signals via eddy-current field interaction, interfacing directly with the 3500 series monitoring racks or equivalent transducers.

Suffix Option Breakdown

• 330101: 3300 XL 8 mm Proximity Probe, 3/8-24 UNF thread, with armor

• -10: Unthreaded length option (1.0 inch)

• -27: Overall case length option (2.7 inches)

• -05: Total length option (0.5 meter / 1.6 feet)

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

• -00: Agency approval option (No hazardous area approvals required)

Transducer Hardware Specifications

Eddy-Current Probe Scaling & Gap Voltage Validation

The probe relies on precise eddy-current probe scaling to ensure linear voltage output over the specified displacement envelope. During mechanical calibration, engineers must perform gap voltage validation targeting a nominal -10 VDC baseline, corresponding to the electrical center of the 80 mil linear window. Minimizing cross-talk suppression between adjacent probe installations requires maintaining a physical separation distance of at least 40 mm between probe tips when mounted parallel. Misalignment or incorrect cross-talk control compromises rotor dynamics analysis accuracy, injecting false signals into high-speed shaft observation loops.

Ordering Info

• 1 x Bently Nevada 330101-10-27-05-02-00 Armored Proximity Probe

• 1 x Factory Coaxial Connector Protector Sleeve (pre-installed)

• 2 x 3/8-24 UNF Hex Jam Nuts

• 1 x Calibration and Verification Data sheet

Mechanical Mounting Guidelines

Proper physical deployment requires verification of the unthreaded and total case length matching the machine casing configuration.

1. Thread the probe body into the mounting bracket or stator block until the tip contacts the observed shaft surface, then back off the probe to establish the physical gap.

2. Monitor the electrical gap using a digital multimeter attached to the Proximitor Sensor output terminals. Adjust probe depth until the gap voltage registers -10.0 VDC (+/- 0.5 VDC).

3. Secure the position by tightening the provided hex jam nuts to a torque value not exceeding 4.5 N-m (40 in-lb) to prevent case deformation.

4. Route the 0.5 meter integral armored cable using conduit or dedicated cable trays. The coaxial run must maintain isolation from structural ground to eliminate ground loops.

Packaging and Shipping Coordination

Delivery time: 2-7 days when payment finish, via DHL/FEDEX/UPS courier infrastructure. Delivery specification mandates specialized anti-static industrial packaging complete with shock-absorbent micro-cellular foam inserts to preserve calibration integrity and physical alignment properties during international transport.

Technical Performance FAQ

Q: What is the mechanical limitation regarding extension cable length for this probe?

A: The 330101-10-27-05-02-00 specifies a 0.5 meter total length. It must be paired exclusively with a 4.5 meter extension cable to establish a matched 5.0 meter system, or an 8.5 meter extension cable for a 9.0 meter system, depending on the Proximitor configuration. Altering cable length alters loop impedance and invalidates the 200 mV/mil scale factor.

Q: Can this probe be hot-swapped while the monitoring rack is energized?

A: Yes. The probe itself is a passive inductive device powered by the Proximitor Sensor. Disconnecting or reconnecting the ClickLoc coaxial connector while the 3500 system is active does not cause electrical damage, though it will trigger a channel fault / NOT OK alarm on the monitoring rack.

Q: How do material composition variations affect the factory calibration?

A: The probe is calibrated at the factory for AISI 4140 steel targets. If used with alternative rotor materials such as 304 or 316 stainless steel, the eddy-current probe scaling shifts significantly, necessitating custom recalibration or the use of specific material correction multipliers within the monitoring software.