Product Overview
The Bently Nevada 330173-00-02-20-12-05 is a 3300 series 5 mm proximity probe with M8 x 1 thread, supplied without armor. This Industrial Automation Module is built for precise gap measurement in proximity transducer systems and provides a stable connection through its miniature coaxial ClickLoc connector and FluidLoc cable.
The model number 330173-00-02-20-12-05 decodes as an unthreaded length of 0 mm, an overall case length of 20 mm, and a total length of 2.0 metres (6.6 feet). The probe tip uses polyphenylene sulfide (PPS), while the case uses AISI 304 stainless steel. This Bently Nevada 330173-00-02-20-12-05 configuration carries multiple agency approvals and weighs 0.323 kg.
Technical Specifications
Unless otherwise noted, specifications apply to a proximity transducer system between +18°C and +27°C (+64°F to +80°F) with a -24 Vdc power supply, a 10 kW load, an AISI 4140 steel target, and the probe gapped at 1.27 mm (50 mils). The Bently Nevada 330173-00-02-20-12-05 accepts -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. Supply sensitivity is less than 2 mV change in output voltage per volt change in input voltage. Documented output resistance is 50 W.
| Parameter |
Value |
| Probe length |
2.0 m (6.6 ft) |
| Probe DC resistance at 2.0 m |
7.88 ± 0.50 Ω |
| Cable type |
75 Ω triaxial, FEP insulated |
| Probe cable options |
0.5, 1, 2, 5, or 9 m (1.6, 3.3, 16.4, or 29.5 ft) |
| Connector material |
Gold-plated brass or gold-plated beryllium copper |
| Tensile strength |
222 N (50 lbf) probe case to lead; 222 N (50 lbf) lead to extension connector |
| Probe case torque |
5.1 N·m recommended; 7.3 N·m maximum |
| Connector-to-connector torque maximum |
0.565 N·m (0.42 ft·lbf) |
| Minimum cable bend radius |
25.4 mm (1.0 in) |
| Probe temperature range |
-35°C to +177°C (-31°F to +351°F) |
| Probe case thread |
1/4-28, maximum engagement 0.375 in |
Installation Guidance
Because shaft-gap measurement depends on a rigid probe, mounting torque matters. Set the probe case torque to 5.1 N·m before final positioning, and never exceed 7.3 N·m. Keep connector-to-connector torque at or below 0.565 N·m to protect the ClickLoc connector. Route the FluidLoc cable with a bend radius of at least 25.4 mm so the FEP insulation remains stress-free.
This 330173-00-02-20-12-05 uses M8 x 1 thread for mounting. Verify thread engagement stays within the 1/4-28 probe case thread limit of 0.375 in maximum. Use the 2.0 m total length consistently when planning cable routing to avoid pulling force on the probe lead.
Maintenance and Reliability
Reliability starts with the temperature range: this Bently Nevada 330173-00-02-20-12-05 operates from -35°C to +177°C. Do not expose the probe to temperatures below -34°C, because that can cause premature failure of the pressure seal. Inspect the gold-plated brass or beryllium copper connectors periodically for wear, and confirm torque values remain within the recommended range.
For long service life, avoid bending the cable beyond the 25.4 mm minimum bend radius and keep the probe lead free of sharp edges. The 222 N tensile rating on the connection points gives you a clear margin for handling during maintenance.
Troubleshooting Common Issues
Unstable readings often trace back to mechanical or environmental stress on the probe. First check the gap. The system specifications are based on a probe gapped at 1.27 mm (50 mils), so use that as the setup reference. Second, inspect the ClickLoc connection; a loose connector can create intermittent output.
Magnetic interference is another possible failure source. In a 5 m system exposed to 60 Hz fields up to 300 Gauss, the probe's output voltage effect at a 90 mil gap is 0.0045 mil pk-pk/Gauss, with the XL Ext. Cable also at 0.0045. If readings drift beyond expectations, verify that the field condition and cable configuration match the intended setup.
Selection and Purchasing Advice
Before ordering a replacement, confirm the total length, thread style, connector option, and agency approval requirement. The 330173-00-02-20-12-05 provides a 2.0 m cable with miniature coaxial ClickLoc connector and FluidLoc cable, so you should verify that your existing extension cable and target system use the same interface. Review the probe tip material and no-armor variant to ensure it fits the installation environment.
When you need a genuine Bently Nevada 330173-00-02-20-12-05, PLC Source PRO supplies verified industrial automation spares for control and monitoring systems. Check the configuration code one more time before purchase to avoid mismatches in case length or connector type.