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BENTLY NEVADA / 3300 XL 25 MM
330851-04-000-040-10-01-00
3300 XL 25 mm Proximity Probe
The 330851-04-000-040-10-01-00 is a 3300 XL 25 mm proximity probe configured with a smooth 1.06-inch diameter side-exit case. Its 40 mm case length, 1.0 m probe length and stainless-steel armor make the configuration suited to demanding turbine monitoring installations where mechanical routing and environmental protection are important.
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PRECISION / DE MONITORING
12.7 mm
Linear Measurement Range 0.787 V/mm
Nominal average scale factor 0.63–13.33 mm
Linear gap range -35°C to +200°C
Probe operating/storage range APPLICATION FOCUS
Steam Turbine Differential Expansion
Designed for noncontact measurement of relative movement between a turbine rotor and casing through a suitable collar or ramp arrangement. |
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BASE
330851
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CASE
04
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UNTHREADED
000
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CASE LENGTH
040
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TOTAL LENGTH
10
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ARMOR / APPROVAL
01 / 00
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TECHNICAL PROFILE
Configured for Turbine DE MeasurementThe 3300 XL 25 mm transducer platform combines a 25 mm probe, extension cable and 3300 XL 25 mm Proximitor Sensor. The system converts the probe-to-target distance into a proportional voltage output for dynamic machinery monitoring. For differential expansion, two proximity transducers can observe a collar or ramp near the thrust bearing. Depending on target geometry, same-side or complementary-input arrangements can provide the required measurement range. |
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12.7
mm linear range
Equivalent to 500 mils over the specified linear region. |
0.787
V/mm nominal ASF
Nominal average scale factor is 20 mV/mil. |
200°C
continuous probe range
Short-term exposure can reach 250°C for less than 24 hours. |
75Ω
FluidLoc cable
Triaxial PFA-insulated cable construction. |
Construction & Protection
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Environmental LimitsProbe: -35°C to +200°C operating and storage. Short-term probe exposure: +250°C maximum for less than 24 hours. Humidity: 100% condensing, non-submersible when connectors are protected. Minimum bend radius: 25.4 mm with or without stainless-steel armor. |
The 330851 family is available in multiple mechanical case arrangements, case lengths, probe lengths, armor selections and approval options. Smooth side-exit configurations are offered alongside threaded and rear-exit arrangements, allowing the probe geometry to be matched to available turbine installation space.
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CASE STYLES
Threaded and smooth cases, including side-exit configurations.
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LENGTH OPTIONS
Metric case lengths include 26, 40, 60, 80, 100 and 250 mm.
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CABLE OPTIONS
Probe lengths are available in 1 m, 5 m and 9 m configurations.
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APPROVAL OPTIONS
The ordering family includes no-approval and multiple-approval options.
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APPLICATION SCENARIOS
Where the 330851 Configuration Fits
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COMMON DIAGNOSTIC CONCERNS
What Can Affect Measurement Quality?Incorrect probe gap: the specified linear region begins at approximately 0.63 mm and extends to 13.33 mm from the target. Target geometry: measurement accuracy depends on suitable target size and installation geometry. Improper cable routing: the probe cable has a specified minimum bend radius of 25.4 mm. Component mismatch: when upgrading an earlier transducer system, the probe, extension cable and Proximitor Sensor must be treated as a complete 3300 XL 25 mm component set. |
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INDUSTRIAL AUTOMATION PARTNER
Keep Critical Equipment Moving.
Amikon focuses on industrial automation components and control-system spare parts, helping maintenance teams shorten sourcing cycles and reduce equipment downtime. PLC • DCS • TURBINE CONTROL • SAFETY SYSTEMS • CONDITION MONITORING
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MULTI-BRAND COVERAGE
HIMA, ABB, Rockwell Automation, ICS Triplex, TRICONEX, Woodward, GE, Yokogawa, Bently Nevada and Emerson automation families are among the product areas supported. |
GLOBAL SOURCING
Our service is built around fast sourcing of spare and operational components for industrial equipment, wherever the required part is located. |
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ORDER SUPPORT
Fast Commercial ProcessingFor an accurate quotation, please provide the complete part number together with the operating context and required delivery timing. |
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| Part Number | Quantity | Destination | Required Date | Machine/System |
| 01 |
Can 330851-04-000-040-10-01-00 be used when the turbine installation has limited radial clearance?
Yes, the 04 case option is specifically a smooth 1.06-inch-diameter side-exit configuration. Its side-exit geometry can be advantageous where cable routing and available installation space make a conventional rear-exit arrangement less suitable. Final mechanical suitability still depends on the actual mounting geometry and target arrangement. |
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What does the 040 configuration of 330851-04-000-040-10-01-00 mean for installation planning?
The 040 position specifies a 40 mm overall case length for this metric smooth-case configuration. The 000 position specifies zero unthreaded length. These dimensions should be checked against the available probe opening, mounting hardware and target location before replacement. |
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Does 330851-04-000-040-10-01-00 include a complete differential-expansion measuring system?
No. This part number identifies the 330851 probe configuration. A complete 3300 XL 25 mm transducer system also uses the appropriate extension cable and 3300 XL 25 mm Proximitor Sensor. For a system replacement, all three components need to be compatible as a 3300 XL 25 mm set. |
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How should 330851-04-000-040-10-01-00 be evaluated if the existing probe is exposed to high turbine temperatures?
The 3300 XL 25 mm probe has an operating and storage range of -35°C to +200°C, with short-term exposure up to +250°C for less than 24 hours. The installation must also account for connector protection, cable routing and the temperature limits of the other components in the complete transducer system. |
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What should be checked before replacing a 330851-04-000-040-10-01-00 in an operating turbine?
Confirm the exact part number, case geometry, 40 mm case length, 1 m probe length, stainless-steel armor selection and approval option. The target geometry and required probe gap should also be checked because the 3300 XL 25 mm system has a specified linear range of 0.63–13.33 mm and a nominal average scale factor of 0.787 V/mm. |
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READY TO SOURCE
Need 330851-04-000-040-10-01-00?
Send the complete part number and your required quantity, destination, required date and machine/system. We will respond with the commercial details for your order. |
EMAIL — sales@amikon.cn PHONE / WHATSAPP — 86-18020776792
Sales Manager: Miya Zheng
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Please contact us within 7 days if you have any question after receiving the items.
Any returned item should remain in its original condition and be accompanied by the specific reason for the return. After the returned item is received and reviewed, we will arrange a return or replacement for the order where applicable.
The buyer is responsible for shipping costs incurred for the return.
Focused on PLC, DCS, turbine control, safety systems and condition-monitoring components for industrial applications.
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