330801-28-05-101-03-02 Bently Nevada Datasheet & Technical Manual

330801-28-05-101-03-02 Bently Nevada Proximity Probe

330801-28-05-101-03-02 Bently Nevada Proximity Probe

Availability: 10 left in stock

The Bently Nevada 330801-28-05-101-03-02, also cataloged as the 330801 Proximity Probe, operates as a dedicated hardware component for non-contact vibration,...

SKU: 330801-28-05-101-03-02

Manufacturer: Bently Nevada
Product No.: 330801-28-05-101-03-02
Product Type: Proximity Sensors
Product Origin: USA
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Bently Nevada 330801-28-05-101-03-02, also cataloged as the 330801 Proximity Probe, operates as a dedicated hardware component for non-contact vibration, displacement, and position measurement within 3500 Machinery Protection System platforms. It utilizes eddy-current technology to detect distance changes between the sensor tip and a conductive target, converting shaft motion into proportional analog output signals across physical monitoring channels.

Suffix Breakdown & Model Matrix

The model code structure for the 330801-28-05-101-03-02 proximity probe defines the following physical configuration:

330801: Base Model Designation for Proximity Probe.
28: Unthreaded Length Option – 2.8 inches.
05: Overall Case Length Option – 5.0 inches.
101: Total System Length Option – 10.1 metres.
03: Connector Option – Miniature coaxial connector with connector protector.
02: Agency Approval Option – Multiple European/International approvals.

Hardware Specifications

Parameter	Specification
Model	330801-28-05-101-03-02
Brand	Bently Nevada
Origin	United States
Weight	0.45 kg
Dimensions	38.1 mm (1.5 in) diameter, 63.5 mm (2.5 in) length
Operating Temp	-40 deg C to +85 deg C
Power Consumption	10 to 32 VDC loop supply
Measuring Range	6.35 to 31.75 mm (0.25 to 1.25 in)
Output Signal	4-20 mA DC, 0-5 VDC, or 0-10 VDC proportional analog output
Protection Rating	IP67

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330801 proximity probe relies on eddy-current probe scaling to convert high-frequency electromagnetic field variations into accurate physical displacement values. Target proximity changes the magnetic field balance generated at the probe tip, shifting output voltages in direct proportion to dynamic shaft movement and static position changes.

During installation and field maintenance, gap voltage validation requires setting the probe to achieve a target output reading near -10 VDC (or equivalent mid-scale current/voltage output) when the machine shaft rests at the mechanical center of its journal clearance. Maintaining correct mechanical gapping prevents signal clipping during high-amplitude rotor dynamics events and limits cross-talk suppression degradation in multi-probe bearing housings.

Frequently Asked Questions

Q: How does proper gap setting impact the analog output signal of the 330801 probe?

A: Setting the probe at the mid-scale gap position ensures the transducer operates within its linear measurement range (6.35 to 31.75 mm). Improper gapping causes non-linear output response, signal distortion, or saturation at the upper and lower range limits.

Q: Can the probe cable be trimmed or modified to fit tighter installation spaces?

A: No. Splicing or cutting the integrated coaxial cable changes the tuned electrical resistance and capacitance of the assembly, destroying factory calibration and introducing significant measurement error into the output signal.

Field Installation Guidelines

Inspect the probe tip, threaded case, and coaxial connector for mechanical damage or contamination prior to installation.
Mount the probe securely in its rigid bracket or housing, maintaining a minimum thread engagement depth of 5 full turns.
Route the coaxial extension cable through protective conduit, adhering to a minimum static bend radius of 25.4 mm (1.0 in).
Isolate signal cables from high-voltage AC lines and variable frequency drive (VFD) power wiring by a minimum clearance of 300 mm to prevent inductive interference.
Perform gap voltage validation using a digital multimeter across the sensor output terminals; adjust mechanical insertion depth until the bias voltage matches the -10 VDC target or equivalent mid-scale baseline.
Connect the cable shield exclusively to system instrument ground at the monitoring rack end, leaving the shield ungrounded at the probe body to prevent ground loops.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.