330101-02-78-05-02-00 3300 XL 8 mm Proximity Probes

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330101-02-78-05-02-00
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330101-02-78-05-02-00 3300 XL 8 mm Proximity Probe is engineered for shaft vibration and position monitoring in automated rotating equipment. The 330101-02-78-05-02-00 delivers a 2 mm (80 mils) linear measurement range, converting shaft displacement into proportional voltage output for turbines, compressors, and pumps. With a 7.8 in minimum case length and 0.2 in unthreaded length, the 330101-02-78-05-02-00 fits deeper mounting sleeves while maintaining correct sensing gap.

Equipped with a 3/8-24 UNF thread and up to 0.563 in engagement, the 330101-02-78-05-02-00 mounts directly into standard bearing housings. The 0.5 meter cable with 69.9 pF/m capacitance and 50 Ω output resistance supports accurate signal transmission to vibration monitoring modules. Operating from –52°C to +177°C, the 330101-02-78-05-02-00 handles high-temperature environments. With less than 2 mV/V supply variation impact, the 330101-02-78-05-02-00 supports Keyphasor reference, speed detection, and real-time condition monitoring in industrial automation systems.

Applications

Install in Deep Bearing Housings to Measure Radial Shaft Vibration

The 330101-02-78-05-02-00 features a 7.8 in minimum case length and 0.2 in unthreaded length, allowing installation in extended probe sleeves found in large turbines and compressors. With a 2 mm (80 mils) linear range, the 330101-02-78-05-02-00 converts shaft vibration directly into proportional voltage output for automated vibration monitoring systems.

Mount on Thrust Assemblies to Track Axial Displacement

Using its 3/8-24 UNF thread and up to 0.563 in thread engagement, the 330101-02-78-05-02-00 can be positioned toward a thrust collar to measure axial shaft movement. The 50 Ω output resistance allows direct connection to monitoring racks for real-time displacement tracking during load changes.

Detect Keyway for Phase Reference and Orbit Calculation

The 330101-02-78-05-02-00 identifies a once-per-turn shaft mark and generates a pulse signal for phase reference. With less than 2 mV change per volt supply variation, the 330101-02-78-05-02-00 limits output shift caused by power fluctuation, supporting accurate orbit analysis in rotating machinery diagnostics.

Measure Rotational Speed in High-Temperature Equipment

Operating from –52°C to +177°C, the 330101-02-78-05-02-00 performs speed measurement inside steam turbines and gas compressors. The 0.5 meter cable length with 69.9 pF/m capacitance supports short-distance routing within compact automation cabinets.

Capture Transient Shaft Movement During Startup and Shutdown

During machine acceleration and deceleration, the 330101-02-78-05-02-00 records shaft displacement within its 2 mm measurement span. The probe supports dynamic data acquisition as the rotor passes through critical speeds.

Specifications

Competitive Advantage

Fit Extended Mounting Sleeves With 7.8 in Case Length

The 330101-02-78-05-02-00 provides a longer 7.8 in probe body compared with shorter variants, enabling installation in deeper bearing housings without additional extension adapters.

Operate Across a 229°C Temperature Range

The 330101-02-78-05-02-00 covers temperatures from –52°C to +177°C, allowing use in both outdoor winter installations and high-heat turbine enclosures without changing probe type.

Limit Output Drift to Less Than 2 mV Per Volt Supply Change

If supply voltage changes by 2 V, the 330101-02-78-05-02-00 output shifts by less than 4 mV. This controlled response reduces measurement deviation in long-term automated monitoring.

Deliver Matched Signal Transmission With 50 Ω Output

The 330101-02-78-05-02-00 maintains 50 Ω output resistance, aligning with standard coaxial monitoring inputs. Combined with 69.9 pF/m cable capacitance, the probe supports high-frequency vibration waveform transmission.

Support Direct Field Wiring From 0.2 to 1.5 mm² Conductors

The 330101-02-78-05-02-00 accepts 16–24 AWG wiring, enabling direct termination in automation control cabinets and reducing installation time during retrofit or new equipment setup.