Brand: Bently Nevada

Bently Nevada 3300 XL Proximitor 330180-51-CN

Name: Bently Nevada 3300 XL Proximitor 330180-51-CN – Datasheet
Brand: Bently Nevada

Description

Overview

The Bently Nevada 3300 XL Proximitor 330180-51-CN is a 3300 XL Proximitor Sensor, the signal-conditioning unit of the 3300 XL 8 mm Proximity Transducer System. Together with a 3300 XL 8 mm probe and a matching extension cable, it produces an output voltage directly proportional to the gap between the probe tip and the observed conductive surface, so the same loop provides both static position and dynamic vibration data to the monitor.

In the 330180-AA-BB order code, option 51 specifies a 5.0 m system length with DIN mount, and option CN specifies a country-specific approval option (see note below). The probe length and extension cable length must add up to the Proximitor system length. The -CN suffix is not listed in the approval options (00 and 05) of Bently Nevada datasheet 141194 Rev. AH; distributors describe it as a country-specific approval variant, and it should be confirmed against the nameplate of the unit being replaced.

Key Features

Signal conditioner for the 3300 XL 8 mm eddy-current transducer system (probe, extension cable, Proximitor)
Linear 2 mm (80 mil) range at 7.87 V/mm (200 mV/mil)
Measures both static gap (position) and dynamic vibration
Accepts 3300-series 5 mm and 3300 XL 8 mm probes; electrically interchangeable with non-XL 3300 components
Up to 305 m of field wiring between Proximitor and monitor
A308 aluminium housing rated -52 °C to +100 °C

Technical Specifications

Parameter	Value
Part number	330180-51-CN
Total length and mounting option	51: 5.0 m system length, DIN mount
Agency approval option	CN: a country-specific approval option (see note below)
Series	3300 XL 8 mm Proximity Transducer System
Input	One 3300-series 5 mm or 3300 XL 8 mm proximity probe and extension cable
Power	-17.5 to -26 Vdc without barriers at 12 mA max; -23 to -26 Vdc with barriers
Supply sensitivity	<2 mV output change per volt of input change
Output resistance	50 Ω
Linear range	2 mm (80 mils), approx. 0.25 to 2.3 mm (10 to 90 mils) from target, approx. -1 to -17 Vdc
Recommended radial vibration gap	-9 Vdc (approx. 1.27 mm / 50 mils)
Incremental scale factor	7.87 V/mm (200 mV/mil) ±5% (5 m system, 0 to +45 °C)
Frequency response	0 to 10 kHz, +0/-3 dB
Field wiring	0.2 to 1.5 mm² (16 to 24 AWG), max. 305 m to the monitor
Proximitor material	A308 aluminium
Proximitor weight	246 g
Operating temperature	-52 °C to +100 °C
Storage temperature	-52 °C to +105 °C
Deviation from straight line (5 m system)	Less than ±0.025 mm at 0 to +45 °C
Minimum target size	15.2 mm diameter flat target
Extension cable capacitance	69.9 pF/m typical
Recommended field cable	3-conductor shielded triad, tinned conductors
DIN rail	35 mm rail, not included
Field terminals	SpringLoc spring-clamp terminal strip, no tools required
Factory calibration target	AISI 4140 steel (other materials on request)
Functional safety (system)	SIL 2 with HFT = 0, SIL 3 with HFT = 1

Applications

Radial vibration and shaft position on fluid-film bearing machines: steam and gas turbines, centrifugal compressors, pumps and generators
Axial (thrust) position and Keyphasor phase reference inputs to 3500 or other API 670 protection systems
Replacement of failed Proximitors in existing 3300 XL loops in oil & gas, petrochemical, power and desalination plants

Bently Nevada 3300 XL Proximitor 330180-51 System Compatibility

A Proximitor with option 51 is tuned for a total cable length of 5.0 m, and the probe lead plus extension cable must add up to exactly that. With the standard 330130 extension cable this gives combinations such as a 1.0 m probe with a 4.0 m cable (330130-040) or a 0.5 m probe with a 4.5 m cable (330130-045). A 5.0 m probe with integral cable connects directly.

Any 3300 XL 8 mm probe, extension cable and Proximitor of matching length can be combined without bench calibration, and the standard 5 m system is the configuration the manufacturer states as fully compliant with API 670. Non-XL 3300 5 mm and 8 mm parts are interchangeable, but a mixed system is limited to the non-XL performance figures.

Buyers also search for codes such as 330180-51-10, 330180-51-15, 330180-51-20 and 330180-51-25. In datasheet 141194 the field after -51 is the approval option only (00 not required, 05 CSA, ATEX, IECEx, plus country variants such as -CN), so these four codes are not valid 330180 part numbers. In the probe codes, 10, 15 and 20 are total-length options (1.0, 1.5 and 2.0 m), which may explain the mix-up; 25 is not an option in either code. 330180-51-05 is valid: a 5 m DIN-mount Proximitor with CSA, ATEX and IECEx approval. Check the sensor label, or send a photo, and we will confirm the sensor, probe and cable set.

Bently Nevada 330180-51 Installation and Wiring Notes

The DIN-mount base clips to 35 mm rail, which is not supplied; the base also isolates the sensor electrically, so no isolator plate is required. Field wiring from 0.2 to 1.5 mm² lands on spring-clamp terminals. The supply should be kept more negative than -23.5 Vdc, since a less negative supply can shorten the linear range. Connector protectors are recommended on the probe-to-cable joint.

Why Seven Star LLC

Seven Star LLC supplies Bently Nevada (Baker Hughes) 3300 XL Proximitor Sensors to power, oil & gas, petrochemical and water customers across Oman and the GCC. Before quoting, we check the complete part number and the system length, mounting style and approval suffix (including the -CN suffix) against the equipment already installed, so the replacement matches the existing system.

Request a Quote for Bently Nevada 3300 XL Proximitor 330180-51-CN

Submit a formal inquiry through our RFQ page with the Proximitor part number 330180-51-CN, the quantity, your probe and extension cable part numbers and whether the -CN approval variant is required. We will confirm the correct configuration and respond with a formal quotation. | Inquiry Form

How the Bently Nevada 3300 XL Proximitor 330180-51-CN works

The Proximitor drives the probe and reads the probe signal. Its output voltage is proportional to the gap between the probe tip and the conductive surface. The same output carries static position and dynamic vibration.

Where the Bently Nevada 3300 XL Proximitor 330180-51-CN is used

Radial vibration measurement
Shaft position measurement
Thrust position measurement
Turbine and compressor monitoring
Monitor input signals

Selection checklist for the Bently Nevada 3300 XL Proximitor 330180-51-CN

System length
Mounting option
Probe type
Extension cable length
Probe length
Field wiring length
Power supply
Existing nameplate

Installation, commissioning and maintenance notes for the Bently Nevada 3300 XL Proximitor 330180-51-CN

Mount the Proximitor on a DIN rail and connect the probe and the extension cable. Set the probe gap to the recommended voltage. Check the gap voltage and the connections at regular intervals.

Requesting a quotation for the Bently Nevada 3300 XL Proximitor 330180-51-CN

Please send the nameplate details, the probe type and the quantity needed. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

330180-51-CN unit type

It is a 3300 XL Proximitor Sensor.

330180-51-CN maker

It is made by Bently Nevada.

330180-51-CN system

It belongs to the 3300 XL 8 mm Proximity Transducer System.

330180-51-CN signal role

It is the signal-conditioning unit of the system.

330180-51-CN order code

The order code is 330180-AA-BB.

330180-51-CN system length

Option 51 gives a 5.0 m system length.

330180-51-CN mounting

Option 51 gives a DIN mount.

330180-51-CN CN option

The CN suffix is a country-specific variant.

330180-51-CN nameplate check

The CN option should be confirmed against the nameplate of the existing unit.

330180-51-CN length rule

Probe length and extension cable length must add up to the system length.

330180-51-CN probes

It accepts 3300 5 mm and 3300 XL 8 mm probes.

330180-51-CN interchange

It is electrically interchangeable with non-XL 3300 components.

330180-51-CN linear range

The linear range is 2 mm.

330180-51-CN scale factor

The scale factor is 7.87 V per mm.

330180-51-CN field wiring

Up to 305 m of field wiring runs between the Proximitor and the monitor.

330180-51-CN power

Power is minus 17.5 to minus 26 Vdc without barriers.

330180-51-CN barrier power

Power is minus 23 to minus 26 Vdc with barriers.

330180-51-CN output resistance

The output resistance is 50 ohm.

330180-51-CN working gap

The recommended radial vibration gap is minus 9 Vdc.

330180-51-CN frequency response

The frequency response is 0 to 10 kHz.

330180-51-CN housing

The housing is A308 aluminium.

330180-51-CN housing temperature

The housing runs from minus 52 to plus 100 degrees C.

Proximitor records for the Bently Nevada 3300 XL Proximitor 330180-51-CN

Record the system length, the gap voltage and the date of each check.

Choosing the right Bently Nevada 3300 XL Proximitor 330180-51-CN option

Choose the system length so that the probe and the cable add up to it.

Other Models in the Bently Nevada 3300 XL Proximity Transducer System Range

Seven Star LLC supplies models from the Bently Nevada 3300 XL Proximity Transducer System range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.

Model	Category
Bently Nevada 3300 XL 8mm Proximity Transducer System	Vibration Monitoring	View details
Bently Nevada 3300 XL 8mm Probe 330103-00-05-10-01-00	Vibration Monitoring	View details
Bently Nevada 3300 XL 8mm Proximity Probe – 330101-00-27-10-02-05	Vibration Monitoring	View details
Bently Nevada 3300 XL Probe 330101-00-27-50-02-05	Vibration Monitoring	View details
Bently Nevada 3300 5mm Proximity Probe – 330170-00-08-20-02-05	Vibration Monitoring	View details
Bently Nevada 3300 XL 25 mm Proximitor Sensor 330850-51-CN	Vibration Monitoring	View details
Bently Nevada 3300 XL Proximitor Sensor 330180-X0-05	Vibration Monitoring	View details
Bently Nevada 3300 XL Proximitor Sensor 330180-12-00	Vibration Monitoring	View details
Bently Nevada 3300 XL Proximitor 330180-50-05	Vibration Monitoring	View details
Bently Nevada 3300 XL Proximitor 330180-51-CN	Vibration Monitoring	You are viewing this model

Datasheets & Documents

Datasheet Bently Nevada 3300 XL Proximitor 330180-51-CN Datasheet Download

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About brand

Bently Nevada is the American machinery protection and condition monitoring brand behind the 3500 rack, the 3300 XL proximity probe and the System 1 software. It was founded in 1961 in Minden, Nevada, and is today a Baker Hughes business.

Seven Star LLC is an independent supplier in Muscat. We list Bently Nevada monitors, I/O modules, probes, proximitors, velocity transducers and transmitters for rotating equipment in Oman and the GCC, and source them by full part number.

Bently Nevada company profile

Established	1961, Minden, Nevada, USA, by Donald E. Bently. The business started earlier as Bently Scientific in Berkeley, California (1956).
Known for	The first commercial eddy-current proximity transducers for measuring shaft vibration and position on high-speed turbomachinery
Ownership	Acquired by GE Energy in 2002; part of Baker Hughes since GE Oil & Gas combined with Baker Hughes in 2017
Rack generations	5000 series (from 1965), 3300 series (from 1988), 3500 series (from 1995), Orbit 60 (current platform)
Product families	Machinery protection racks, proximity probes and proximitors, Keyphasor sensors, velocity and acceleration transducers, 2-wire vibration transmitters, general-purpose monitors, portable analyzers, wireless sensors and System 1 condition monitoring software
Typical machines	Steam and gas turbines, centrifugal and reciprocating compressors, pumps, motors, generators, fans and gearboxes

Milestones

1956: Donald E. Bently starts Bently Scientific in Berkeley, California.
1961: The company moves to Minden, Nevada, as Bently Nevada.
1965: The 5000 series monitoring system is introduced.
1988: The 3300 series follows.
1995: The 3500 machinery protection system is launched.
2002 and 2017: GE Energy acquires Bently Nevada; it becomes part of Baker Hughes in 2017.

Bently Nevada product series

Series	Type	What it does
3500	Machinery protection rack	Continuous online protection with alarm and danger relays. Modules include the 3500/15 power supply, 3500/20 rack interface, 3500/25 Keyphasor, 3500/42M proximitor/seismic, 3500/50 tachometer, 3500/60 temperature, 3500/33 relay and 3500/92 communication gateway
3500 recip modules	Reciprocating compressor monitoring	3500/70M impulse velocity, 3500/72M rod position and 3500/77M cylinder pressure
Orbit 60	Protection and monitoring platform	The current Bently Nevada platform for protection, condition monitoring and data integration with System 1
3300 XL 8 mm	Proximity transducer system	Probe, extension cable and proximitor sensor for radial vibration, thrust position and Keyphasor reference on fluid-film bearing machines; also 5 mm and 25 mm versions
330500 Velomitor, 190501 Velomitor CT	Piezo-velocity sensors	Casing velocity on rolling-element bearing machines and low-speed cooling tower fans
990 and 991	2-wire transmitters	4-20 mA vibration (990) and thrust position (991) signals straight into a PLC or DCS, without a monitor rack
1900/65A, 2300	Compact monitors	Protection for balance-of-plant pumps, fans and motors where a full 3500 rack is not justified

A proximity probe measures the gap to the shaft, so it sees shaft movement inside a fluid-film bearing directly. A velocity or acceleration sensor sits on the casing and suits rolling-element bearing machines. Critical turbomachinery usually carries two X-Y probes per bearing, two axial probes for thrust position and a Keyphasor probe for speed and phase.

Where Bently Nevada systems are used

In Oman and the GCC, Bently Nevada racks and probes protect gas turbines, compressors and steam turbines in gas processing, LNG, refining, petrochemical, power and desalination plants. Many installations are 3500 racks that have run for years, so most requests are for like-for-like module, probe, extension cable and proximitor replacements, plus upgrades to newer monitors.

Ordering and replacement: what we need

For probes and proximitors, send the full part number with all option digits (for example 330101-00-27-10-02-05). The digits set the probe length, cable length, connector and approvals, and the probe, cable and proximitor must match in total system length. For 3500 modules, send the module and I/O part numbers from the rack and say whether the I/O is internal or external termination, or barrier type. If a module is obsolete, we quote the replacement that Bently Nevada names and point out any configuration or firmware change.

Facts checked against Baker Hughes Bently Nevada pages and published company history, October 2026.

Browse Bently Nevada products by category: Vibration.

FAQ

Questions about the Bently Nevada 3300 XL Proximitor 330180-51-CN

Answers from our engineering team on installation, compatibility and integration.

01What is the 3300 XL Proximitor used for?

The 3300 XL Proximitor converts the proximity probe signal into a DC voltage proportional to the measured gap, for radial vibration and axial position monitoring on rotating machinery. It is the signal conditioning module of the 3300 XL transducer system.

02Is the Proximitor sold with the probe and extension cable?

The 3300 XL system is ordered as a matched set of probe, extension cable and Proximitor against the complete system part number. Seven Star LLC confirms the matching components before your order is placed.

03What does the 50 configuration in the part number mean?

Option 51 in the part number identifies a 5.0 m system length with DIN rail mounting (option 50 is the same length with panel mounting). Your original part number should be checked to confirm the system length and mounting.

04Does this Proximitor work with 3300 XL 5 mm probes?

The 330180 family operates with the 3300 XL probe range. Confirm the probe diameter and part number of your installed transducer set so the matching Proximitor is supplied.

05How is the Proximitor powered?

The module is powered from the monitor supply or a dedicated -24 Vdc supply, and includes a test jack for verifying the transducer loop from the terminal strip.