Selection
- Confirm the 50 mm non-standard case, M30 x 2 mounting thread and code 05 approval requirement.
- Verify the 61 mm minimum target diameter and the complete 25 mm system architecture.
Item NO.:
330851-02-000-050-10-00-05Order(MOQ):
1Goods Stock:
32Payment:
T/TLead Time:
In stockWeight:
0.08KGDimension:
20.5x23x3.5cmDescription:
Proximity SensorPrice:
AskM30 x 2 standard-mount 3300 XL 25 mm probe with 0 mm unthreaded length, non-standard 50 mm case, 1.0 m lead and multiple approvals.
330851-02-000-050-10-00-05 is a Bently Nevada 3300 XL 25 mm proximity probe with an M30 x 2 threaded case.
The code specifies 0 mm unthreaded length, a 50 mm case, 1.0 m total probe length, no armor and the multiple-approval option. The 50 mm case is identified as a non-standard, extra-charge configuration rather than a normally stocked geometry.
The 25 mm system is used principally for differential-expansion measurements. Confirm target size, mounting clearance, matched extension cable, Proximitor Sensor and system calibration before installation.

The 3300 XL 25 mm system is designed for differential-expansion measurement on mid-size to large steam turbine generators. It measures the difference in growth between the turbine rotor and the machine casing through a collar or ramp arrangement.
Fifty millimetres is not one of the listed standard metric case lengths, so the ordering table treats it as a non-standard length with an additional charge. This exact part number is also absent from the document's stocked-probe list.
The probe uses an M30 x 2 threaded case, 0 mm unthreaded length and a 50 mm overall case. The published recommended torque for threaded probe cases is 68 N m, and the cable route must maintain a 25.4 mm minimum bend radius.
The matched system is 5 m or 9 m including the extension cable. A one-metre probe lead therefore belongs with the manufacturer-documented extension-cable and Proximitor length that completes the selected 5 m or 9 m chain.
The published system specifications use an AISI 4140 steel flat target at least 61 mm in diameter and a 7.0 mm reference gap. The 12.7 mm linear range is stated for the matched 25 mm chain under those defined conditions.
No. The probe uses a Viton O-ring and compression seal, but the manufacturer states that probes are not pressure-tested before shipment. An application that requires a tested pressure seal therefore needs that requirement addressed separately.
The manufacturer requires the probe, extension cable and Proximitor Sensor to be replaced with 3300 XL 25 mm components. The matched Proximitor output is documented as identical to the legacy systems, which allows the monitor configuration to remain unchanged within that stated migration path.
The documented sliding bracket lets the probe assembly move relative to the rotor collar so the system can be checked across its range. A dial-indicator verification kit provides a movement reference while the bracket helps keep the transducer aligned and perpendicular to the rotor.
The supplied product is covered for 12 months under ApterPLC sales terms. Retain the complete product label, original packaging and transaction record so the exact unit can be identified quickly if warranty support is needed.
Includes an ApterPLC guide page and selected manufacturer pages covering 3300 XL 25 mm system specifications, the 330851 ordering table and probe drawings.
|
3300/53 |
4454-156 |
1701/15 |
|
3300/21 |
16137-174 |
136294-01 |
|
990-04-XX-01-CN |
16137-177 |
330180-52-05 |
|
330354-040-24-05 |
330980-70-05 |
330104-00-06-10-02-00 |
|
330930-045-00-00 |
330180-92-05 |
330104-00-06-10-11-00 |
|
330130-070-00-CN |
177230-01-01-CN |
330104-00-07-05-02-00 |
|
3500/93 135799-02 |
330930-060-00-05 |
330103-11-19-10-02-00 |
|
3500/93 135785-02 |
3500/62 133811-03 |
330104-00-07-90-02-00 |
|
330103-05-15-05-02-00 |
3500/70M 140734-09 |
330104-00-08-05-02-00 |
|
330104-00-15-10-02-00 |
330905-08-13-10-02-05 |
330104-05-13-10-02-00 |
|
330106-05-30-50-02-00 |
330104-01-08-10-01-05 |
330104-05-15-05-02-00 |
|
330907-05-30-05-02-05 |
330101-00-20-05-02-05 |
330104-06-12-10-02-00 |
|
330106-05-30-20-02-CN |
330104-06-14-50-02-00 |
330104-10-18-10-01-00 |
|
330103-00-05-20-02-CN |
330103-00-04-10-12-00 |
330104-00-06-10-02-CN |
|
330851-02-000-030-10-00-05 |
330105-02-12-90-02-05 |
330104-00-07-10-02-CN |
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