1. Product Overview — Bently Nevada 330850‑91‑00

Introduction

The Bently Nevada 330850‑91‑00 is a non‑contact proximity / displacement sensor module within the 3300 XL 25 mm Proximitor family. It is designed to convert the signal from a 25 mm proximity probe (via extension cable) into a voltage output directly proportional to the gap between probe tip and target surface (shaft, rotor, etc.). The “91” in the part number typically indicates a 9.1‑metre system length and DIN-rail mounting configuration (or DIN-compatible mounting style). The suffix “00” designates that this variant is a non‑approval version (i.e. no special agency certification included).

Because of its 9.1 m reach, 330850‑91‑00 is suitable for installations where the electronics module must be placed at a distance from the probe, perhaps due to layout constraints, accessibility, or noise avoidance. It is intended for use in industrial rotating machinery monitoring, vibration diagnostics, predictive maintenance, and shaft position tracking in critical equipment.

It belongs to the Bently Nevada family, leveraging the broad ecosystem of probes, extension cables, and monitoring devices in the 3300 / 3300 XL line.

2. Technical Specifications

Below is a table of expected or typical technical parameters for 330850‑91‑00. Because “00” implies no extra approvals, some safety / hazardous‑area specs are minimized accordingly. Dimensions and weight are included.

Notes / Observations:

• The DIN / “91” designation implies this module is intended for DIN rail mounting or a form factor conducive to panel racks with DIN compatibility.

• Because this is the “00” (non‑approval) version, it lacks certifications such as ATEX / IECEx / other regional approvals, making it more suited for general industrial zones rather than hazardous zones.

• The dimension and weight values are in line with comparable 9 m / DIN style proximity modules in the Bently 3300 XL family.

• The linear measurement range and sensitivity numbers are typical for 25 mm proximity systems and are consistent with other models in that family.

3. Applications

The 330850‑91‑00 is designed for demanding industrial applications where reliable, continuous, high-precision, non-contact displacement / vibration sensing is required, particularly when the sensor electronics are placed away from the probe. Typical use cases include:

• Steam and gas turbine rotor radial displacement / vibration monitoring

• Large industrial generators and motors

• Compressors (centrifugal, reciprocating)

• Pumps, fans, blowers in process plants

• Condition monitoring and diagnostic systems

• Predictive maintenance platforms

• Retrofitting older proximity systems to modern sensor lines

• Machinery in chemical, petrochemical, refining, power generation, oil & gas sectors

Its extended reach (9.1 m) allows flexibility in component placement and routing of wiring in complex machinery cabinets or remote panels.

4. Advantages & Key Features

Here are the primary advantages and design strengths of the 330850‑91‑00:

1. Long‑distance reach (9.1 m)
   Enables remote placement of electronics relative to the probe without sacrificing signal integrity, which is useful in complex layouts.

2. Non‑contact measurement
   Avoids physical contact with the shaft, eliminating wear, friction, and potential mechanical interference.

3. DIN‑compatible mounting (91 style)
   Designed to integrate into DIN‑rail-based control cabinets or racks, aiding modular installation.

4. Compact and lightweight
   Despite its reach, the module remains relatively small and light (~0.22 kg), easing installation in tight envelope spaces.

5. Interchangeable within 3300 XL ecosystem
   Compatible with 25 mm probes and extension cables from the same family, allowing upgrades or replacements without wholesale redesign.

6. Basic industrial EMI / RFI protection
   Provides shielding and filtering adequate for standard industrial electrical noise environments (though not specialized hazardous-area level).

7. Simplicity / cost-effective
   As a non‑approval variant, it often carries lower cost and fewer regulatory burdens in non-hazard zones.

8. Long-term reliability
   When installed and maintained well, these modules can last years with minimal drift and high stability.

5. Related or Same-Series Model Suggestions (5 Models)

Here are five related models in the 330850 / 3300 XL 25 mm proximity sensor line. As requested, the model column is bolded.

These options cover different combinations of length (5 m vs 9 m / 9.1 m), mounting style (panel vs DIN), and approval status.

6. Popular Models from the Same Brand (5 Examples)

Here are five well-known or commonly used Bently Nevada modules / models often seen in condition monitoring systems: