When Uptime Defines Survival
Three decades ago, a turbine trip meant days of lost production. Today, operators demand continuous monitoring and fast replacement of critical sensors. The Bently Nevada 146054-08-50-01-00 ceramic capped proximity probe answers that demand. It belongs to the proven 3300 series and ships ready-to-install for oil, gas, and industrial automation systems.
This probe uses a 3/8-24 UNF thread and a 0.8-inch case length. Its 5.0-meter total length suits machines where the Proximitor Sensor sits far from the measurement point. The miniature coaxial ClickLoc connector with protector locks securely and resists vibration. A ceramic tip (Al2O3) shields the sensing coil from harsh environments.
Key Parameters That Matter
Linear Range and Sensitivity
The probe delivers a 1.52 mm (60 mils) linear range, starting about 0.25 mm (10 mils) from the target. Incremental Scale Factor is 7.87 V/mm (200 mV/mil) ±6.5% over 0°C to +45°C. That consistency lets you set alarms and trips with confidence.
Temperature and Pressure Limits
The probe operates from -51°C to +177°C (-60°F to +351°F). It seals 34 Bar (500 psi) nitrogen, so it handles high-pressure compressor casings. For higher pressures, contact our custom design department.
Electrical and Mechanical Details
Nominal DC resistance from center to outer conductor is 8.73 ±0.70 ohms at 5.0 m. The AISI 304 stainless steel case resists corrosion. The 75-ohm FEP-insulated cable maintains signal integrity.
Where This Probe Earns Its Keep
Steam turbine retrofits often need a 5-meter probe because the Proximitor Sensor lives in a cooler junction box. The 146054-08-50-01-00 fits that gap. In gas compression trains, the ceramic cap stands up to process gas and minor impacts. For pipeline pump monitoring, the 3/8-24 thread mounts quickly into existing housings.
Integration and Selection Advice
This probe works only with a 5 m Proximitor Sensor. Mixing cable lengths degrades accuracy. The ClickLoc connector simplifies field wiring, but confirm your extension cable and sensor match the 5 m system. When integrating into a PLC or DCS, you may need a gateway or connection module. Ask Oil AutoTech to confirm cables and gateways for your setup.
Before ordering, verify the overall case length (0.8 in) and thread engagement (0.563 in max) fit your machine. Also check that agency approval option -00 (not required) meets your site rules.
Maintenance That Protects Your Investment
Inspect the probe tip periodically for deposits or damage. Keep the connector dry and tight. Avoid bending the cable beyond its natural radius. Because the probe seals 34 Bar, do not loosen fittings under pressure. Follow the manufacturer’s safety manual for all maintenance.
Frequently Asked Questions
What is the total length of this probe?
5.0 meters (16.4 feet). It is designed for use with a 5 m Proximitor Sensor only.
What thread size does the 146054-08-50-01-00 use?
3/8-24 UNF. Maximum thread engagement is 0.563 inches.
What is the operating temperature range?
-51°C to +177°C (-60°F to +351°F) for both operating and storage.
Does this probe include agency approvals?
The ordering option -00 means agency approval is not required. Verify your site requirements before purchase.
Can I use a different cable length with this probe?
No. The 5 m probe must pair with a 5 m Proximitor Sensor. Other lengths will affect system accuracy.
Please verify current lifecycle status and availability with Oil AutoTech before ordering. Contact Oil AutoTech today for pricing and availability.
