Brand: Bently Nevada

Bently Nevada 330780-51-00 3300 XL 11 mm Proximitor, 5 m DIN

Name: Bently Nevada 330780-51-00 3300 XL 11 mm Proximitor, 5 m DIN
Brand: Bently Nevada
SKU: 330780-51-00

Description

330780-51-00: 3300 XL 11 mm Proximitor Sensor, 5.0 m system, DIN mount

The Bently Nevada 330780-51-00 is a 3300 XL 11 mm Proximitor Sensor for the 5.0 m (16.4 ft) system length with DIN-rail mounting and no approval option. It pairs with 11 mm probes where a 4.0 mm (160 mil) linear range is needed, such as axial thrust position or ramp measurements.

In the 330780-AA-BB scheme the code 51 selects a 5.0 m DIN-mounted system and the code 00 means agency approvals are not required.

Segment	Code	Meaning (from the ordering table)
330780	330780	3300 XL 11 mm Proximitor Sensor
A: total length and mounting	51	5.0 m system length, DIN-rail mount
B: agency approval	00	Not required

330780-51-00 technical specifications

Parameter	Specification
Manufacturer / part number	Bently Nevada 330780-51-00
Product	3300 XL 11 mm Proximitor Sensor
System length / mounting	5.0 m (16.4 ft) including extension cable; DIN-rail mount
Agency approval option	00 (not required)
Probe input	One non-contacting 3300 XL 11 mm probe with extension cable
Supply voltage	-17.5 to -26 Vdc at 12 mA maximum without barriers; -23 to -26 Vdc with barriers
Supply sensitivity	Less than 2 mV output change per volt of supply change
Output resistance	50 Ω
Linear range	4.0 mm (160 mils), from about 0.5 to 4.5 mm (20 to 180 mils), roughly -1 to -17 Vdc
Extended linear range	About 0.5 to 5.0 mm (20 to 200 mils), -1 to -19 Vdc; not applicable with zener barriers
Recommended gap	2.5 mm (100 mils)
Incremental scale factor	3.94 V/mm (100 mV/mil) ±10% including interchangeability error, in 0.5 mm (20 mil) steps over the 4.0 mm range
Deviation from best-fit line	Less than ±0.10 mm (±4 mils) standard range; less than ±0.15 mm (±6 mils) extended range
Frequency response	0 to 8 kHz, +0/-3 dB typical, with up to 305 m of field wiring
Field wiring	0.2 to 1.5 mm² (16 to 24 AWG), three-conductor shielded triad recommended, up to 305 m (1,000 ft)
Target size	Flat target 30.5 mm (1.2 in) minimum diameter; shaft 152 mm (6.0 in) recommended minimum
Sensor operating temperature	-52 to +100 °C (-62 to +212 °F); storage -52 to +105 °C
Humidity	100% condensing, non-submersible when connectors are protected; damp heat tested to IEC 68-2-3
Sensor material and weight	A380 aluminum; 255 g (9 oz)

Signal conditioning in the 330780-51-00

Inside the sensor, an oscillator feeds the probe coil and a demodulator turns the loaded coil signal into dc plus ac output. The 11 mm tip gives half the sensitivity of an 8 mm system, 3.94 V/mm (100 mV/mil), in exchange for twice the usable gap: 0.5 to 4.5 mm in the standard range and up to 5.0 mm in the extended range when no zener barriers are used. The sensor is factory calibrated to AISI 4140 steel unless another target material is requested.

330780-51-00 for 5 m thrust and rod-position channels

A 5.0 m system is the shorter of the two lengths and is typical when the cabinet or junction box is close to the machine. The probe and extension must add up to 5.0 m: a 1.0 m probe with a 4.0 m extension, or a 5.0 m probe with no extension.

With the DIN version the sensor sits on a rail alongside other channels, which suits thrust-bearing groups where several position probes share a junction box. The datasheet also positions the 3300 XL 11 mm line as a replacement path for 7200-series 11 mm and 14 mm systems, provided every component and the monitor configuration are updated together.

Related parts and family overview for 330780-51-00

Within the family, 330780-50-00 is the 5.0 m panel version, 330780-90-00 and 330780-91-00 are the 9.0 m panel and DIN versions, and 330780-91-05 is the 9.0 m DIN version with multiple approvals. The ordering table for the 330780 sensor offers six length and mounting codes (50, 51, 52, 90, 91, 92) and two approval codes (00 and 05). Codes 52 and 92 are the versions supplied without mounting hardware. The sensors shown below are the ones commonly requested.

Part number	System length	Mounting	Approval option
330780-50-00	5.0 m (16.4 ft)	Panel mount	None
330780-51-00	5.0 m (16.4 ft)	DIN mount	None
330780-90-00	9.0 m (29.5 ft)	Panel mount	None
330780-91-00	9.0 m (29.5 ft)	DIN mount	None
330780-91-05	9.0 m (29.5 ft)	DIN mount	Multiple approvals (05)

Selection and ordering checklist for 330780-51-00

Confirm total system length is 5.0 m (probe plus extension)
Confirm DIN-rail mounting instead of panel
Confirm 11 mm probe model and thread (1/2-20, 5/8-18, M14 x 1.5, M16 x 1.5 or reverse mount)
Decide whether approvals are required; option 05 is a different part
Check the monitor channel is configured for the 11 mm range
Confirm the target size is at least 30.5 mm diameter

Installation, commissioning and maintenance of the 330780-51-00

Mount on the rail, connect the field cable to the SpringLoc terminals and attach the extension cable until the ClickLoc connectors click. Protect the joint with connector protectors for humid or damp locations.

Verify the installation by moving the shaft through its travel and confirming the output with a multimeter or the monitor. The datasheet requires the sensor to be installed so terminals reach IP54 when used under its hazardous-area approvals.

Use 40113-02 protector kit or 40180-02 protector pairs for field fitting
Standard 1/2-20 probe cases ship with a 3/4 inch lock nut; the correct torque keeps the probe from rotating
Tip spacing of about 64 mm for axial probes limits cross-talk
Inspect the cable bend radius of 25.4 mm (1.0 in)
Carry one spare sensor for each length and mounting style

Typical applications in Oman and the GCC

The 330780-51-00 is typical for compressor and turbine thrust positions, tachometer and zero-speed pickups and reciprocating compressor rod-drop monitoring in oil and gas and petrochemical sites in the region. In hot, dusty plants, locating the sensor in a rail-mounted cabinet away from machine heat is a practical design choice, and the 5 m reach covers most skid-mounted machines.

Information to send with an RFQ for 330780-51-00

Part number 330780-51-00 and quantity
Probe model and extension cable for the 5.0 m total
Measurement duty: thrust, rod drop, speed or Keyphasor
Monitor type and configuration
Delivery location in Oman or the GCC and required date

Documents and quotation

The manufacturer datasheet for the 330780-51-00 is attached on this page under Documents, so wiring, ordering options and environmental limits can be checked before you order.

The datasheet also covers dimensions for the DIN-mount sensor outline. Seven Star LLC is an independent supplier based in Muscat; submit the part number, quantity and delivery location and we reply with availability and a quotation.

Other Models in the 3300xl Proximitor 11mm Range

Seven Star LLC supplies models from the 3300xl Proximitor 11mm 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 330780-91-00 3300 XL 11 mm Proximitor, 9 m DIN	Vibration Monitoring	View details
Bently Nevada 330780-51-00 3300 XL 11 mm Proximitor, 5 m DIN	Vibration Monitoring	You are viewing this model

Datasheets & Documents

Datasheet Bently Nevada 330780-51-00 Datasheet Download

Reviews (0)

Reviews

There are no reviews yet.

How would you rate this product?

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 330780-51-00 3300 XL 11 mm

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

01What does 330780-51-00 mean?

It follows the 330780-AA-BB pattern. Code 51 means 5.0 m system with DIN mounting; 00 means no agency approval option.

02How far is the linear range of the 330780-51-00?

The standard linear range is 4.0 mm (160 mils), from about 0.5 to 4.5 mm; an extended range reaches 5.0 mm when no zener barriers are used.

03Can it replace a 7200 11 mm sensor?

The datasheet says the 3300 XL 11 mm line is designed to replace 7200-series 11 mm and 14 mm systems, but every component must be replaced and the monitor setup updated.

04What probe length pairs with a 5 m sensor?

Probe plus extension cable must be 5.0 m, such as a 1.0 m probe with a 4.0 m extension (330730), or a 5.0 m probe without extension.

05What is the frequency response?

The datasheet gives 0 to 8 kHz, +0/-3 dB typical, with up to 305 m (1,000 ft) of field wiring.