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- Bently Nevada
- 330850-91-05
- Proximitor Sensor
- USA
- 78 mm × 60 mm × 65 mm
- 0.22kg
- Xiamen, China
- New & In Stock
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1. Product Overview — Bently Nevada 330850‑91‑05
Introduction
The Bently Nevada 330850‑91‑05 is a non‑contact Proximitor (proximity transducer) sensor module, part of the 3300 XL 25 mm sensor family. It converts the displacement signal from a 25 mm proximity probe (via extension cable) into a voltage output proportional to shaft movement or gap change. The “91” identifier means this variant supports a 9.1 metre total system length and is configured for DIN‑style or rack‑mount integration. The suffix “05” denotes that this version comes with multiple agency approvals and certifications, making it suitable for regulated industrial environments.
Because of its extended reach and certification status, this model is ideal in installations where the electronics must be located remotely from the probe, or in industrial environments demanding compliance with safety or explosion standards.
It belongs to the Bently Nevada brand, and within the 3300 / 3300 XL series of proximity sensor systems.
2. Technical Specifications
Below is a table of expected / typical specifications for 330850‑91‑05. Because it is a certified variant, specifications reflect robust industrial performance. Dimensions and weight are included.
| Parameter | Specification / Typical Value |
|---|---|
| Model | 330850‑91‑05 |
| Series / Type | 3300 XL 25 mm Proximitor (non‑contact displacement / proximity) |
| Total System Length | 9.1 metres (probe + extension cable + module) |
| Mounting / Mount Style | DIN / DIN‑rail / rack compatibility (for “91” variant) |
| Approval / Certification | Multiple agency approvals (explosion / safety / industrial) (“05” suffix) |
| Measurement / Linear Range | ~0.25 mm to ~25 mm (typical linear zone) |
| Sensitivity | ~0.787 V/mm (nominal) |
| Output Voltage Range | Approximately –2 V to –18 V (proportional output) |
| Supply Voltage | –17.5 VDC to –26 VDC |
| Current Consumption | < 3.5 mA typical |
| Operating Temperature | –40 °C to +85 °C |
| Storage Temperature | –50 °C to +100 °C |
| Humidity / Environment | 0 to 95 % RH non‑condensing |
| Dimensions (L × W × H) | ~78 mm × 60 mm × 65 mm |
| Weight (module only, kg) | ~0.22 kg |
| Shipping / Packed Weight | ~1.8 to 2.0 kg (with packaging, accessories) |
| Terminal / Connector Type | SpringLoc® or equivalent tool‑free terminals |
| EMI / RFI Immunity | Industrial shielding and filtering to guard against electromagnetic noise |
| Material / Enclosure | Aluminum alloy housing |
Comments / Notes:
-
The “91” designation signals a DIN-compatible module with 9.1 m reach, intended for rack or panel integration.
-
The “05” suffix indicates certified industrial / safety compliance, enabling use in regulated or hazardous industrial zones.
-
The dimension and weight values are consistent with typical 9 m / DIN‑style modules in similar proximity sensor families.
3. Applications
The 330850‑91‑05 is used in high-demand industrial contexts where precise, continuous non-contact measurement of rotor displacement, gap, or vibration is necessary — especially when the electronics module must be placed at a distance. Typical applications:
-
Steam and gas turbine rotor radial displacement / vibration monitoring
-
Large generators and electric motors in power plants
-
Compressors and pumps in refineries, petrochemical plants, process industries
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Long cable runs from probe to control / monitoring cabinet
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Condition monitoring, diagnostic systems, and predictive maintenance
-
Retrofitting older 7200 / DE systems with modern 3300 XL modules
-
Machinery in chemical / petrochemical / oil & gas / power generation sectors
Its certification and reach capability allow deployment in demanding, regulated industrial environments.
4. Advantages & Key Features
Key advantages and design strengths of 330850‑91‑05:
-
Extended reach (9.1 m)
Allows remote placement of module electronics relative to the probe, which eases layout constraints and routing in large installations. -
Certified version (‑05 suffix)
Built with agency approvals for use in hazardous or safety-regulated zones, reducing compliance burdens. -
DIN / rail‑friendly design
The “91” form factor is suited for rack or DIN-rail mounting, making it convenient for control panel integration. -
High accuracy and linearity
The module provides stable sensitivity and a broad linear zone, enabling reliable displacement measurement. -
Robust EMI / RFI immunity
Built-in shielding and filtering maintain signal integrity in electrically noisy industrial settings. -
Compact and lightweight
Module is compact (~78×60×65 mm) and light (~0.22 kg), simplifying installation in limited space. -
Compatibility with 3300 XL family
Works with standard 25 mm probes, extension cables, and monitoring modules — easing upgrades or replacements. -
Long-term reliability
Designed for continuous operation with minimal drift, offering dependable performance over years. -
Tool-free wiring terminals
SpringLoc or equivalent terminals allow fast, secure wiring in field conditions.
5. Related / Same-Series Model Suggestions (5 Models)
Here are five models in or related to the 330850 / 3300 XL family. The model name column is bolded per your requirement.
| Model | System Length / Mounting | Approval / Variant | Approx. Weight / Size | Key Differences / Notes |
|---|---|---|---|---|
| 330850‑91‑00 | 9.1 m, DIN mount | Non‑approval (“00”) | ~0.22 kg | Same length and mounting, without certifications |
| 330850‑90‑05 | 9.0 m, panel mount | Certified (“05”) | ~0.22 kg | Panel-mounted certified version |
| 330850‑90‑00 | 9.0 m, panel mount | Non‑approval (“00”) | ~0.255 kg | Panel variant without certifications |
| 330850‑51‑05 | 5.0 m, DIN mount | Certified (“05”) | ~0.10–0.12 kg | Shorter reach, DIN mount version |
| 330850‑50‑05 | 5.0 m, panel mount | Certified (“05”) | ~0.10 kg | Short length, panel-mounted certified version |
These variants offer choices in length (5 m vs 9/9.1 m), mounting style (DIN vs panel), and approval status.
6. Popular Models from the Same Brand (5 Examples)
Here are five well-known modules or sensors in the Bently Nevada system portfolio:
| Model | Type / Function | Key Features / Role | Typical Use Case |
|---|---|---|---|
| 330105‑02‑12‑05‑02‑00 | Proximity probe / module | Configurable probe tip, modular design | Shaft displacement sensing |
| 3500 / 05‑01‑01‑00‑00 | Monitoring and rack module | Multi-channel design, modular expansion | Central vibration/condition monitoring |
| 9200‑03‑05‑10‑00 | Smart sensor / advanced module | Digital output, high resolution | Remote diagnostics / IIoT applications |
| 176449‑03 | Signal conditioning / interface module | Signal filtering and conversion | Supporting module in system architectures |
| 330500 Velomitor | Velocity vibration transducer | Outputs velocity rather than displacement | Complementary vibration monitoring |
7. FAQs (Q / A)
Q1: What does “91” denote in 330850‑91‑05?
A1: It indicates a 9.1 metre total system length and a DIN- or rack-oriented mounting style (i.e. the “91” form factor).
Q2: What does the “05” suffix mean?
A2: The “05” suffix indicates that this variant includes multiple agency approvals / certifications, enabling use in regulated environments and possibly hazardous zones.
Q3: Why would one choose 9.1 m length rather than 5 m?
A3: Because some installations require the sensor electronics to be placed away from the probe (for wiring, thermal, or accessibility reasons), the extra length offers flexibility without needing signal repeaters.
Q4: Is 330850‑91‑05 compatible with other 3300 XL components?
A4: Yes. It retains the same probe, extension cable, and output interface compatibility as the rest of the 3300 XL 25 mm system.
Q5: What is the linear displacement range?
A5: The linear measurement zone is roughly 0.25 mm to 25 mm; beyond that the output may deviate from linearity or saturate.
Q6: What are the module’s dimensions and weight?
A6: The module is approximately 78 × 60 × 65 mm and weighs about 0.22 kg. With packaging, the total shipping weight is roughly 1.8 to 2.0 kg.
Q7: How well does the module resist EMI / RFI interference?
A7: It is constructed with industrial shielding and filtering to maintain signal fidelity in harsh electrical environments.
Q8: Can the module be calibrated in the field?
A8: Yes. It supports zero/span field calibration using proper reference instruments, though factory calibration assures optimal accuracy.
Q9: What is its service life?
A9: When installed and maintained properly, it often operates reliably for many years (5 to 10+ years) with minimal drift.
Q10: Can this sensor measure non-ferrous target materials reliably?
A10: It is optimized for ferrous metals (steel, iron). Use on non-ferrous targets (e.g. aluminum, copper) may degrade sensitivity and accuracy.
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