The Bently Nevada 330780-50-00 is a high-performance Proximitor® sensor from the 3300 XL 11 mm proximity transducer system series. This module serves as the signal conditioner and amplifier within a complete 11 mm eddy current transducer system, powering the probe and processing raw gap voltage signals into precise, high-level outputs proportional to the distance between the probe tip and the target shaft. It is commonly integrated with vibration monitoring systems such as the 3500/42M, 3500/50, and 1900/65 .
The specific model 330780-50-00 is configured as a 5.0-meter total system length unit with a panel mount design and no special agency approvals required . It is a direct upgrade path for older 7200-series transducer systems and is widely used in turbine supervisory instrumentation (TSI) for measuring shaft vibration, axial displacement, and position.
Item No :
330780-50-00Order(MOQ) :
1Payment :
EXWProduct Origin :
USAShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5 daysWeight :
3kgProduct Showroom
Bently Nevada 330780-50-00 3300 XL Proximitor Sensor
5.0-Meter System Length, Panel Mount
New and Original
High-Performance Signal Conditioning: Converts raw 11 mm eddy current probe signals into a buffered, linear voltage output (100 mV/mil) proportional to gap distance, enabling accurate static and dynamic measurements
Enhanced Noise Immunity: Improved RFI/EMI immunity allows installation without special shielded conduit, reducing costs and meeting CE mark approvals
Tool-Free Field Wiring: SpringLoc™ terminal strips eliminate the need for special tools, providing faster and more robust field wiring connections compared to traditional screw-type terminals
Direct Legacy Upgrade Path: Fully replaces 7200-series 11 mm and 14 mm transducer systems, providing a seamless upgrade to the advanced 3300 XL platform
Panel Mount Design: The -50 suffix indicates panel mount configuration (4-hole mounting), suitable for installation directly on control cabinet panels or equipment frames
5.0-Meter System Length: Pre-configured for use with 5.0-meter total system length (probe + extension cable) for optimal impedance matching and measurement accuracy
| Category | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 330780-50-00 |
| Product Type | 3300 XL 11 mm Proximitor Sensor |
| System Compatibility | 3300 XL 11 mm Eddy Current Transducer System |
| Total System Length | 5.0 meters (16.4 feet) |
| Mounting Option | Panel Mount (4-hole) |
| Agency Approval | None required |
| Output Scale Factor | 3.94 V/mm (100 mV/mil) ±5% |
| Linear Measurement Range | 0.5 to 4.5 mm (4.0 mm / 160 mils) |
| Frequency Response | 0 to 8 kHz |
| Power Supply | -17.5 VDC to -26 VDC (-24 VDC nominal) |
| Maximum Current Draw | 12 mA |
| Output Signal | Buffered voltage output (dynamic vibration + static displacement) |
| Operating Temperature | 0°C to +45°C (Proximitor) |
| Compliance | API 670, ISO 10817-1 |
| Country of Origin | USA |
The part number 330780-50-00 provides specific configuration details :
| Suffix | Code | Meaning |
|---|---|---|
| 330780 | - | Base model for 3300 XL 11 mm Proximitor Sensor |
| -50 | - | 5 = 5.0-meter total system length; 0 = Panel mount |
| -00 | - | No agency approvals required |
The Proximitor sensor is one-third of a complete transducer system and must be used with matching 11 mm probes and extension cables :
| Critical Item | Requirement |
|---|---|
| Supported Probes | 330701, 330702, 330707 (11 mm Eddy Current Probes) |
| System Length Match | Must equal exactly 5.0 meters (probe length + extension cable length) |
| Compatibility Warning | DO NOT use with 8 mm probes (330180 series) — the sensitivity and linear range are incompatible |
System Length Match Required: The total electrical length of the probe plus extension cable must equal the Proximitor's 5.0-meter rating. Any length deviation will cause impedance mismatch, signal reflection, and measurement drift .
This sensor is the ideal electronic cornerstone for critical machinery monitoring across various industries :
| Industry | Application |
|---|---|
| Power Generation | Shaft vibration and axial displacement monitoring on steam and gas turbines, generators, and critical pumps |
| Oil & Gas | Condition monitoring of high-speed machinery such as centrifugal compressors, turbo-expanders, and pipeline pumps |
| Heavy Industrial | Rotating equipment monitoring in steel mills, paper plants, and heavy manufacturing facilities |
| Petrochemical | Upgrading legacy monitoring systems and API 670-compliant machinery protection |
The 330780-50-00 interfaces with a wide range of Bently Nevada monitoring systems :
| Compatible Monitoring System | Description |
|---|---|
| 3500/42M | 4-Channel Proximitor/Vibration Monitor |
| 3500/50 | 4-Channel Tachometer Module |
| 3500/45 | Position Monitor |
| 1900/65 | General Purpose Equipment Monitor |
| Detail | Information |
|---|---|
| Condition | New & Original |
| Stock Status | In Stock |
| Warranty | 12 Months |
| Shipping | Fast dispatch upon order confirmation |
The Bently Nevada 330105-02-12-05-02-00 is an 8 mm reverse-mount proximity probe from the 3300 XL series, engineered for non-contact vibration and position monitoring in space-constrained machinery.
The Bently Nevada 330130-085-00-00 is an 8.5-meter standard extension cable for the 3300 XL 8 mm Proximity Transducer System. It connects a 3300 XL proximity probe to its Proximitor® sensor, transmitting eddy-current displacement signals for vibration, axial position, and Keyphasor measurements on critical rotating machinery.
The Bently Nevada 21000-00-00-15-030-04-00 is a Proximity Probe Housing Assembly from the 21000 series, designed to provide a secure, environmentally sealed mounting interface for reverse-mount proximity probes on critical rotating machinery.
The Bently Nevada 330780-50-00 is a 5.0-meter Proximitor® Sensor for the 3300 XL 11 mm Proximity Transducer System. It receives signals from a 3300 XL 11 mm probe and its extension cable, conditioning them into a linear voltage output proportional to shaft displacement for radial vibration, axial thrust position, and Keyphasor measurement.
The Bently Nevada 21747-040-00 is a 4-meter Proximitor probe extension cable designed for the 3300 and 7200 Series Proximity Transducer Systems. It connects a proximity probe to its Proximitor sensor, transmitting high-frequency eddy-current displacement signals for vibration and shaft position monitoring on critical rotating machinery.
The Bently Nevada 330710-00-060-10-02-00 is a 3300 XL 11 mm Proximity Probe designed for non-contact vibration and position measurement on large, fluid-film bearing machinery. Its 11 mm tip provides a longer linear range compared to the standard 8 mm system, making it ideal for applications requiring greater measurement span, such as axial thrust position, differential expansion, and radial vibration on steam turbines, centrifugal compressors, and large pumps.
The Bently Nevada 330103-00-11-50-02-00 is a 3300 XL 8 mm proximity probe with a metric M10×1 thread and a 5.0-meter integral cable terminated with a miniature coaxial ClickLoc™ connector. This extended-reach configuration features a 110 mm overall case length and connects directly to a Proximitor® sensor without requiring an extension cable for short-run installations.
The Bently Nevada 990-10-XX-01-00 (MOD 165353-01) is a two-wire, loop-powered Vibration Transmitter designed for OEMs of centrifugal air compressors, small pumps, motors, and fans. It accepts input from a 3300 NSv proximity probe and its matching extension cable, conditioning the signal into a 4–20 mA output proportional to peak-to-peak vibration amplitude.
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