Large probe tip
The 25 mm probe geometry supports the extended displacement range used for differential-expansion measurement.
3308513300 XL 25 mm proximity probe
Bently Nevada · Machinery monitoring hardware
Bently Nevada 330851-02-000-080-90-01-05 | 3300 XL 25 mm proximity probe
An M30x2 threaded 25 mm probe with an 80 mm case, 9 m FluidLoc lead, stainless-steel armor and multi-approval option.
CaseM30x2 threaded
Lead9.0 m FluidLoc
ArmorStainless steel
Product facts
Product Information
Bently Nevada 330851-02-000-080-90-01-05 is a 3300 XL 25 mm proximity probe for the extended-range transducer system. The 25 mm sensing tip develops an eddy-current response at the target, and the matched 330850 Proximitor Sensor converts that response for differential-expansion or other large-range position measurement.
The ordering fields of Bently Nevada 330851-02-000-080-90-01-05 specify an M30x2 threaded case, zero unthreaded length, an 80 mm case, a 9.0 m total lead, stainless-steel armor and the multiple-approval option. The 75-ohm FluidLoc cable carries the probe response and limits moisture migration through the lead.
Bently Nevada 330851-02-000-080-90-01-05 is built for high-temperature steam-turbine differential-expansion environments. The probe has front and rear seals, high-temperature ClickLoc connectors and a removable connector nut that assists routing through restricted openings.
Verified data
Technical Data
| Technical item | 330851-02-000-080-90-01-05 |
|---|---|
| Brand | Bently Nevada |
| Product type | 3300 XL 25 mm proximity probe |
| Brand country | United States |
| Case type | 02: M30x2 threaded |
| Unthreaded length | 000: 0 mm |
| Overall case length | 080: 80 mm |
| Total lead length | 90: 9.0 m |
| Cable construction | 75-ohm FluidLoc |
| Armor option | 01: stainless-steel armor |
| Approval option | 05: multiple approvals |
| Probe range | 25 mm system family, extended-range displacement |
| Continuous probe temperature | Up to 200 °C |
| Intermittent probe temperature | Up to 250 °C |
| Sealing | Front and rear probe seals |
| Connector | High-temperature ClickLoc with removable nut |
| Matching electronics | 330850 9 m Proximitor Sensor |
Differential expansion
Product Functions: Extended-Range Sensing
Bently Nevada 330851-02-000-080-90-01-05 forms the sensing stage of a matched 9 m 3300 XL 25 mm system.
Matched electronics
The 9 m probe lead connects to a 330850 Proximitor Sensor selected for the same total system length.
Position output
Target movement changes the eddy-current response that the Proximitor converts into a proportional voltage.
Cable protection
Product Features: Armored FluidLoc Lead
The 90-01 fields on Bently Nevada 330851-02-000-080-90-01-05 define a 9 m FluidLoc lead protected by stainless-steel armor.
01
FluidLoc barrier
The cable construction limits liquid migration through the interior of the probe lead.
02
Steel armor
The external stainless-steel armor protects the cable against mechanical contact along the routed length.
03
Removable nut
The high-temperature ClickLoc nut can be removed to pass the connector through restricted routing clearances.
Practical selection and use
Product Questions
Which Proximitor Sensor length matches Bently Nevada 330851-02-000-080-90-01-05?
Bently Nevada 330851-02-000-080-90-01-05 has a 9.0 m probe lead, so it belongs with the 9 m 330850 Proximitor Sensor configuration. Do not place it on a 5 m calibrated chain.
What thread and case length are built into Bently Nevada 330851-02-000-080-90-01-05?
Bently Nevada 330851-02-000-080-90-01-05 uses an M30x2 threaded case with zero unthreaded length and an 80 mm overall case length. Confirm all three dimensions at the mounting location.
Why does Bently Nevada 330851-02-000-080-90-01-05 use FluidLoc cable?
The FluidLoc cable on Bently Nevada 330851-02-000-080-90-01-05 limits moisture movement through the probe lead in steam-turbine differential-expansion service. It does not replace correct connector sealing or cable routing.
How should the armored lead of Bently Nevada 330851-02-000-080-90-01-05 be routed?
Route Bently Nevada 330851-02-000-080-90-01-05 so the stainless-steel armor is supported and the ClickLoc transition is not sharply bent. Use the removable connector nut when a restricted opening must be passed.
What temperature boundary applies to Bently Nevada 330851-02-000-080-90-01-05?
The 3300 XL 25 mm probe family used by Bently Nevada 330851-02-000-080-90-01-05 supports continuous operation up to 200 °C and intermittent exposure up to 250 °C at the probe. The connected electronics retain their own lower temperature limit.
What should be checked if Bently Nevada 330851-02-000-080-90-01-05 does not span correctly?
For Bently Nevada 330851-02-000-080-90-01-05, verify target geometry, probe gap, 9 m system-length matching and 330850 calibration. A mechanically correct probe can still scale incorrectly if paired with the wrong system length.
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