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.
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330780-50-00Order(MOQ) :
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EXWProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 330780-50-00 |
| Product Family | 3300 XL 11 mm Proximity Transducer System |
| Product Type | Proximitor® Sensor (Signal Conditioner) |
| System Length | 5.0 meters (16.4 feet) |
| Mounting Type | Panel Mount |
| Agency Approval | Not required (00 option) |
| Input Compatibility | 3300 XL 11 mm probes and extension cables only |
| Sensitivity | 3.94 V/mm (100 mV/mil) nominal |
| Linear Measurement Range | 4.0 mm (160 mils) |
| Recommended Gap | 0.5 mm to 4.5 mm (20 to 180 mils) |
| Output Signal | -24 VDC to 0 VDC proportional output |
| Power Supply (without barriers) | -17.5 VDC to -26 VDC |
| Power Supply (with barriers) | -23 VDC to -26 VDC |
| Max Current Consumption | 12 mA |
| Output Resistance | 50 Ω |
| Frequency Response | 0 to 8 kHz (typical); 0 to 10 kHz per some sources |
| Operating Temperature | -35°C to +85°C (sensor); -52°C to +100°C per some sources |
| Housing Material | A380 Aluminum |
| Weight | 255 g (9 oz) |
| Compliance | API 670 compliant |
| Country of Origin | USA |
Part Number Breakdown (330780-AXX-BXX):
330780 – 3300 XL 11 mm Proximitor Sensor
-50 – 5.0 m system length, panel mount
-00 – Agency approval: Not required
| Model | Description | Typical Application |
|---|---|---|
| 330780-50-00 (this model) | 5.0 m system, panel mount, no approvals | Standard 5 m system, general purpose |
| 330780-51-00 | 5.0 m system, DIN-rail mount, no approvals | DIN-rail installations |
| 330780-90-00 | 9.0 m system, panel mount, no approvals | Longer cable runs |
| 330780-91-00 | 9.0 m system, DIN-rail mount, no approvals | DIN-rail with longer cable runs |
| 330780-50-05 | 5.0 m system, panel mount, multiple agency approvals | ATEX/IECEx hazardous areas |
| 330780-50-CN | 5.0 m system, panel mount, China approval | Chinese market installations |
| 330730-040-00-00 | 4.0 m extension cable | Extending probe cable to match 5 m system |
| 330703-000-060-10-02-00 | 11 mm probe, 60 mm case, 1.0 m cable | Typical companion probe for this sensor |
| 330180-50-00 | 3300 XL 8 mm Proximitor Sensor | Not compatible – different probe diameter |
Q1: What is the primary function of the 330780-50-00?
It is a Proximitor Sensor (signal conditioner) that receives the eddy-current signal from a 3300 XL 11 mm proximity probe, processes it, and outputs a linear voltage proportional to shaft displacement. This enables non-contact measurement of radial vibration, axial thrust position, and Keyphasor reference signals on large rotating machinery .
Q2: What is the difference between the 11 mm and 8 mm Proximitor systems?
The 11 mm system has a larger tip diameter and double the linear range (4.0 mm vs. 2.0 mm). Its output sensitivity is 3.94 V/mm (100 mV/mil), compared to 7.87 V/mm (200 mV/mil) for the 8 mm system. The 11 mm system is preferred for large shaft applications where greater measurement span is required, such as axial thrust and differential expansion monitoring .
Q3: What mounting options are available for this sensor?
The -50 suffix indicates panel mounting (4-hole). For DIN-rail mounting, the -51 variant (330780-51-00) is required. The two are not mechanically interchangeable .
Q4: Can I use this sensor with an 8 mm probe?
No. The 330780-50-00 is designed exclusively for 3300 XL 11 mm probes. Mixing it with 8 mm probes (330180 series) will result in incompatible sensitivity and linear range, leading to incorrect measurements. The entire transducer chain (probe, extension cable, and Proximitor) must be from the 11 mm system family .
Q5: What should I check if the sensor output is unstable or inaccurate?
Common causes of signal instability include:
System length mismatch – the total electrical length of the probe plus extension cable must exactly equal 5.0 meters for this model
Improper grounding – the sensor should be floating (isolated from earth) to prevent ground loops
High-frequency connector interference – ensure the coaxial connector is properly isolated and not in contact with the cabinet or earth
Cable damage or kinking – avoid sharp bends; minimum bend radius is 25.4 mm (1.0 in)
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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