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Frequently inquire Together
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InquiryBently Nevada 330192-00-68-05-05 Eddy Current Proximity Probe
The Bently Nevada 330192-00-68-05-05, also cataloged as the 330192 3300 XL 8 mm Extended Temperature Range (ETR) Proximity Probe, operates as a dedicated eddy-current sensor for displacement measurement in turbine supervisory instrumentation systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330192-00-68-05-05 |
| Brand | Bently Nevada |
| Origin | U.S.A |
| Weight | 0.323kg |
| Dimensions | Case length 6.8 in; cable length 0.5 m (1.6 ft) |
| Operating Temp | -51 deg C to +177 deg C (-60 F to +350 F) |
| Product Type | Eddy Current Proximity Probe |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303/304 stainless steel |
| Cable Construction | 75 Ω triaxial, PFA insulated (ETR type) |
| Armor Construction | Flexible SST armor with FEP jacket |
| Connector Type | Miniature ClickLoc coaxial (ETR cable) |
| Agency Approval | CSA, ATEX, IECEx |
Eddy-Current Probe Scaling and Gap Voltage Validation
The 330192 probe is calibrated for AISI 4140 steel targets, supporting a linear range of 2.0 mm (80 mils). Scale factor is 7.87 V/mm (200 mV/mil), with linearity error less than ±0.06 mm across the range. Recommended gap voltage is −10 VDC, with operational spectrum between −2 VDC and −18 VDC. Cross-talk suppression and impedance matching are embedded to ensure stable displacement conversion in multi-probe installations.
Frequently Asked Questions (FAQ)
Q: What is the recommended operating gap voltage? A: −10 VDC is the nominal operating center point, ensuring accurate displacement scaling.
Q: What tensile strength limits apply to the probe cable? A: Maximum 330 N (75 lbf) from probe case to lead, and 270 N (60 lbf) at probe-to-extension cable interface.
Q: Can the probe withstand high-pressure environments? A: Yes. The probe tip is evaluated to withstand up to 70 bar (1,000 psi) case-to-tip pressure differential.
Field Installation Guidelines
- Install probe tip perpendicular to the shaft surface for accurate displacement measurement.
- Maintain minimum cable bend radius of 25.4 mm (1.0 in) to prevent conductor fatigue.
- Ground shielding at the monitoring rack end only to avoid ground loops.
- Protect connectors against condensation to maintain 100% humidity tolerance.
- Verify insertion depth to achieve −10 VDC gap reference during commissioning.
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- TEL: +86 180 3027 3592