Product Details
The Bently Nevada 330780-51-CN serves as the primary 330780 Proximitor Sensor utilized to execute non-contacting shaft displacement and vibration measurements across 3300 XL machinery monitoring platforms.
Suffix Breakdown & Model Matrix
| Option Field | Code | Configuration Detail |
|---|---|---|
| Total Length and Mounting Option | 51 | 5.0 meter (16.4 feet) system length, DIN-rail mount configuration |
| Agency Approval Option | CN | ATEX/IECEx and Chinese NEPSI hazardous area approvals |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330780-51-CN |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 0.25 kg |
| Dimensions | 81 mm x 61 mm x 50 mm (standard DIN-rail enclosure) |
| Operating Temp | -35 deg C to +65 deg C (-31 deg F to +149 deg F) |
| Power Consumption | -17.5 VDC to -26 VDC (-24 VDC nominal), 12 mA maximum current draw |
| System Length | 5.0 meters (16.4 feet) calibrated system |
| Mounting Type | 35 mm DIN-rail mount |
| Agency Approvals | ATEX/IECEx, Chinese NEPSI (CN option) |
| Output Scale Factor | 3.94 V/mm (100 mV/mil) nominal for 11 mm probe systems |
Eddy-Current Probe Scaling and Gap Voltage Validation
The 3300 XL 11 mm Proximitor Sensor conditions high-frequency radio frequency (RF) signals transmitted to the connected proximity probe tip. The sensor demodulates the signal changes caused by target surface eddy currents into a proportional DC and AC voltage output. For an 11 mm probe system, the calibrated linear scale factor is 3.94 V/mm (100 mV/mil). During installation, static mechanical positioning requires gap voltage validation at the sensor output terminals. The technician sets the probe gap to achieve a nominal -10 VDC bias target, corresponding to the physical midpoint of the sensor linear operating range over carbon steel targets.
Frequently Asked Questions
Q: Why must the Proximitor Sensor remain matched to a 5.0 meter system cable length?
A: The internal oscillator and signal conditioning circuitry are tuned for a total system capacitance corresponding to 5.0 meters. Altering the physical cable length without recalculating tuning distorts the linear scale factor.
Q: What is the electrical requirement for supply power to the 330780 Proximitor Sensor?
A: The unit requires a negative DC supply voltage between -17.5 VDC and -26 VDC referenced to system ground, drawing a maximum current of 12 mA.
Field Installation Guidelines
- Snap the Proximitor Sensor housing securely onto a standard 35 mm DIN rail inside an IP65 or NEMA 4X rated field enclosure.
- Verify electrical isolation between the Proximitor base housing and the mounting plate to avoid unintended ground loops.
- Connect the 11 mm proximity probe extension cable to the Proximitor coaxial connector, ensuring the ClickLoc keyway is fully engaged and hand-tightened.
- Apply coaxial terminal insulation boots over the physical connection to isolate the coaxial outer conductor from local ground contact.
- Connect field wiring to the screw terminal block: -24 VDC power, Common, and Signal Output. Route field wires through grounded metal conduit.
- Adjust the probe position at the target shaft until the DC gap voltage measured at the signal terminals reads -10.0 VDC +/- 0.5 VDC.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.