Description
The Bently Nevada 330103-00-05-15-02-CN is a 5mm/8mm Proximitor Sensor belonging to the 3300 XL series. This eddy-current sensor converts the physical distance between the proximity probe tip and a conductive target area (such as a rotating machine shaft) into a continuous, linear DC voltage signal. It is an integral component in machinery protection systems, widely utilized for measuring static shaft displacement (axial thrust position) and dynamic shaft motion (radial vibration) in critical rotating equipment like turbines, compressors, and large pumps.
Commercial Availability & Procurement Details
- Product Condition: New Original (Factory Sealed Surplus)
- Warranty Period: 12-Month Comprehensive Warranty
- Worldwide Shipping: 1–3 business days via DHL Express, FedEx, or UPS
- Pricing Notice: Listed pricing is indicative and fluctuates based on global supply chains. Price subject to market conditions; contact our sales team for a firm quote.
Part Number Breakdown (Model Code Configurator)
The specific configuration options designated by the part number 330103-00-05-15-02-CN are decoded as follows:
| Field Element | Option Code | Specific Meaning & Hardware Configuration |
| Base Model Number | 330103 | 3300 XL Proximitor Sensor |
| Agency Approval | 00 | No Approvals Required / Standard Industrial Version |
| Total System Length | 05 | 0.5 meter (1.6 feet) system length |
| Mounting Option | 15 | 35 mm DIN rail mount, panel mount, or integrated hardware installation |
| Agency Approval Type | 02 | Low-profile or standardized design variant configuration |
| Country Designation | CN | Approved for use/sale within the designated global market network |
Technical Specifications
The table below outlines the primary electrical, mechanical, and performance boundaries for the 330103 Proximitor Sensor.
| Parameter | Value / Technical Specification |
| Input Supply Voltage | −24 V DC nominal (Range: −17.5 to −26 V DC) |
| Current Consumption | Less than 12 mA |
| Linear Range | 2.0 mm (80 mils); begins at roughly 0.25 mm (10 mils) from the probe face |
| Scale Factor (ASF) | 7.87 V/mm (200 mV/mil) nominal |
| System Output Impedance | 50 \ \Omega nominal |
| Operating Temperature | −51 to +100 °C (−60 to +212 °F) |
| Storage Temperature | −51 to +105 °C (−60 to +221 °F) |
| Relative Humidity | 100% condensing, non-submerged (when connectors are protected) |
| Probe Compatibility | 3300 XL 5mm and 8mm probes |
| Enclosure Material | A380 aluminum housing with polyphenylene sulfide (PPS) base |
Engineering Architecture & Calibration Notes
System Length Matching
The 330103 Proximitor Sensor requires strict matching with the appropriate probe and extension cable system length. This specific unit is designated with the 05 option (0.5-meter system length). This means it is designed to work in conjunction with a specific extension cable and probe configuration to sum up to the target electrical length required by the calibration circuitry. Mixing different system lengths will degrade the Average Scale Factor (ASF) and compromise measurement accuracy.
Linear Performance boundaries
When calibrated against a standard AISI 4140 steel target, the sensor provides a highly stable voltage output proportional to the gap distance.
- Incremental Scale Factor (ISF): Remains within \pm 10\% of 7.87 V/mm (200 mV/mil) when operated within the specified limits.
- Deviation from Best Fit Straight Line (DSL): Remains within \pm 0.025 mm (\pm 1 mil) over the entire linear range.
[Target: 4140 Steel Shaft] <-- Gap --> [3300 XL Probe] === (Extension Cable) ===> [330103 Proximitor]
|
[-24 V DC Power & Analog Signal Out] ---> [3500 Monitor Module]
Field Installation Guidelines
To ensure proper electrical operation and avoid measurement interference, follow these field deployment steps:
- Isolation from Structure: Ensure the Proximitor housing is electrically isolated from the underlying metal mounting plates or enclosure walls. Electrical contact can cause ground loops, introducing high-frequency noise into the machine monitoring module.
- Connector Protection: Use specialized connector protectors or self-fusing silicone tape on the coaxial connections between the probe, extension cable, and Proximitor input. Moisture ingress inside the coaxial joints will shift the system capacitance and cause false vibration readings or system errors.
- Bending Radius Constraints: Do not bend the coaxial extension cables tighter than a 25.4 mm (1.0 inch) minimum radius. Kinking or over-bending the cables alters their internal electrical properties and permanently disrupts the factory sensor calibration.
Frequently Asked Questions
Can this Proximitor sensor be used with non-4140 shaft materials?
The 3300 XL Proximitor is factory-calibrated for AISI 4140 target steel. If your rotating shaft consists of a different material (such as 300-series stainless steel, Monel, or Inconel), the scale factor will change. You must perform a custom calibration loop test or implement scale-factor corrections within the monitoring rack software (e.g., Bently Nevada 3500 rack system) to compensate for the structural properties of alternative alloys.
What is the exact purpose of the “05” system length option?
The “05” specifies a 0.5-meter hardware length option configuration internal to the Proximitor itself. Total system tuning relies on matching the sensor base with matching extension cables and probe lengths (typically totaling either 5-meter or 9-meter overall physical topologies). Always verify your complete probe-plus-cable physical configuration matches the exact system length noted on the Proximitor side label before securing the mounting hardware.
How do I troubleshoot a suspected sensor failure in the field?
Verify the input supply voltage across the power terminals first. It should read between −17.5 V DC and −26 V DC. Next, measure the DC gap voltage at the “OUT” terminal relative to the “COM” terminal. If the target is within the active linear range and the output voltage sits clamped near 0 V DC or −24 V DC without responding to changes in physical gap clearance, check the coaxial cable for a short circuit or an open electrical loop. If the wiring is sound, the internal driver circuitry may be damaged.
