Overview
Suffix Breakdown & Model Matrix
| Code | Specification |
|---|---|
| 330171 | 3300 5 mm Proximity Probe, 1/4-28 UNF thread, without armor |
| -00 | Unthreaded length: 0.0 in |
| -12 | Overall case length: 1.2 in |
| -10 | Total cable length: 1.0 m (3.3 ft) |
| -01 | Miniature coaxial ClickLoc connector with connector protector, standard cable |
| -05 | Multiple hazardous area / Ex approval option |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330171-00-12-10-01-05 |
| Brand | Bently Nevada |
| Product Type | 3300 5 mm Proximity Probe |
| Origin | Made in USA |
| Thread Size | 1/4-28 UNF |
| Armor | Without armor |
| Linear Measurement Range | 2.0 mm (80 mils) |
| Output Sensitivity | -200 mV/mil with a compatible 3300 Proximitor Sensor |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel |
| Operating Temp | -35 deg C to +177 deg C |
| Connector Type | Miniature coaxial ClickLoc connector with connector protector |
| Cable Length | 1.0 m (3.3 ft) |
| Weight | Not specified in supplied data |
| Dimensions | Case length: 1.2 in; other dimensions not specified |
| Power Consumption | Not applicable to the passive probe element |
Eddy-Current Measurement and Gap Voltage
The probe operates as the sensing element of an eddy-current transducer system. A compatible 3300 Proximitor Sensor supplies the excitation and converts the probe response into a proportional output signal.
Therefore, installation requires correct probe-to-target geometry and stable mechanical positioning. The stated system sensitivity is -200 mV/mil, while the specified linear range is 2.0 mm (80 mils).
For machinery monitoring, technicians should validate the probe gap and electrical output after installation. Bently Nevada proximity systems commonly use negative DC gap-voltage measurements for installation verification; however, the exact target voltage should follow the applicable system documentation rather than be inferred from the probe part number alone.
The probe construction uses a PPS tip and stainless-steel case. Consequently, the sensing element can maintain the specified operating temperature range while providing a non-contact measurement interface.
Frequently Asked Questions
Q: Does the 330171-00-12-10-01-05 probe provide the final vibration output by itself?
A: No. The probe operates with a compatible 3300 Proximitor Sensor, which supplies the required interface and produces the proportional electrical output.
Q: What measurement range does this probe support?
A: The supplied specification states a linear measurement range of 2.0 mm (80 mils).
Q: What should technicians verify during field installation?
A: Technicians should verify mechanical mounting, probe-to-target clearance, cable routing, connector engagement, shielding, and the resulting electrical gap signal before commissioning.
Field Installation Guidelines
- Mount the probe using the specified 1/4-28 UNF thread without applying excessive mechanical force.
- Maintain the required probe-to-target geometry specified by the associated 3300 system installation documentation.
- Route the coaxial cable away from high-current conductors, ignition sources, and strong electromagnetic interference.
- Avoid sharp bends, crushing, abrasion, or excessive tension on the probe cable.
- Fully engage the miniature coaxial ClickLoc connector and inspect the connector protector before commissioning.
- Maintain appropriate cable shielding and grounding practices according to the complete 3300 transducer system installation requirements.
- For hazardous-area installations, verify that the complete probe, cable, Proximitor Sensor, barriers, and associated approvals match the site classification.
- After mechanical installation, verify the electrical gap signal and system output before connecting the measurement channel to machinery protection logic.
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