Introduction
The component with part number 330400-01-05 is a Proximitor® Driver / Signal Conditioner from Bently Nevada* (a Baker Hughes company). This device is a critical component of the standalone proximity transducer system.
Its primary function is to provide power to a proximity probe and to condition the raw RF signal returned from the probe. It converts the changes in the probe's electromagnetic field, caused by the distance to a rotating shaft, into two clean, standardized voltage outputs: a DC voltage proportional to the average gap (position) and an AC voltage proportional to the dynamic change in gap (vibration). This enables precise measurement of shaft relative vibration and position.
*Bently Nevada is a part of Baker Hughes.
Parameters
The following table outlines the key technical parameters for the 330400-01-05 Proximitor Driver.
| Parameter | Specification |
|---|---|
| Part Number | 330400-01-05 |
| Description | Proximitor Driver / Signal Conditioner |
| Compatibility | Designed for use with Bently Nevada 8mm proximity probes. |
| Input Power | Typically -18 to -26 VDC. |
| Output Signals | Gap Voltage (DC): Proportional to average distance between probe tip and target. Vibration Voltage (AC): Proportional to dynamic motion of the target. |
| System Scale Factor | 200 mV/mil (7.87 V/mm) |
| Output Impedance | Low impedance output for driving long cables to monitoring equipment. |
| Frequency Response | Typically 0 to 10,000 Hz. |
| Electrical Connection | Terminal block or coaxial connectors for power, probe input, and signal output. |
| Mounting | DIN rail mount or panel mount. |
| Operating Temperature | -40°C to 85°C (-40°F to 185°F) |
| Dimensions (Approx.) | 80 mm x 40 mm x 100 mm (H x W x D) (3.15 in x 1.57 in x 3.94 in) |
| Weight (Approx.) | 0.3 kg (0.66 lb) |
Application Scenarios
The 330400-01-05 Proximitor Driver is the electronic heart of a proximity measurement system, used wherever precise measurement of shaft dynamics is required.
Standalone Vibration and Position Monitoring:
Used in systems that do not have a full 3500 or 3300 rack, providing a conditioned signal that can be directly connected to PLCs, DCS analog input cards, or portable data collectors.
Retrofit and System Integration:
Ideal for adding vibration monitoring capability to existing machinery or for integrating with third-party control and monitoring systems that require a standard voltage input.
Radial Vibration Measurement:
Conditions the signal from a proximity probe mounted radially on a bearing to monitor shaft vibration, essential for detecting unbalance, misalignment, and oil whirl.
Axial Thrust Position Monitoring:
Conditions the signal from a probe mounted axially to monitor the position of a thrust collar, protecting the machine from damage due to excessive axial movement.
Keyphasor® Signal Generation:
Used with a proximity probe observing a keyway or notch on a shaft to generate a once-per-revolution timing signal (Keyphasor) for phase reference and speed measurement.
Typical Machinery Monitored:
Steam Turbines & Gas Turbines
Centrifugal & Axial Compressors
Large Pumps & Motors
Generators
Fans & Gearboxes
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