Bently Nevada 330708-00-24-50-12-05 11 mm Probe

Bently Nevada 330708-00-24-50-12-05 Proximity Probe

Product Introduction

The 330708-00-24-50-12-05 is a genuine Bently Nevada 3300 XL 11 mm proximity probe. It measures shaft vibration and position on rotating machinery. Specifically, this model combines a 5/8-18 UNF case thread with a 5.0-meter FluidLoc cable. Moreover, the miniature coaxial ClickLoc connector ensures a fast, secure link to the extension cable. Therefore, it suits steam turbines, gas turbines, compressors, and large motors that require wide-gap measurement.

Technical Specifications

First, let us review the electrical values. The probe DC resistance (RPROBE) is 7.2 ± 0.8 Ω at 5.0 meters. Meanwhile, the probe cable is 75 Ω triaxial with FEP insulation. Besides, the ClickLoc connector needs only finger-tight torque, with a maximum of 0.565 N·m (5 in·lb).

The 330708-00-24-50-12-05 pairs with a 5-meter Proximitor Sensor only. Specifically, five-meter probes are designed for use with the five-meter sensor. In addition, the linear range and system accuracy follow the 3300 XL 11 mm standard when paired with matching components.

Mechanical and Environmental Parameters

The probe tip uses polyphenylene sulfide (PPS), and the case uses AISI 304 stainless steel. The case thread is 5/8-18 UNF, with a maximum thread engagement of 0.938 in. Furthermore, the recommended case torque is 15.2 N·m (133 in·lb), and the maximum rated torque is 45.2 N·m (400 in·lb).

The operating and storage temperature range spans -51 °C to +177 °C (-60 °F to +351 °F). However, exposure below -34 °C (-30 °F) may cause premature failure of the pressure seal. The minimum bend radius is 25.4 mm (1.0 in) with or without stainless steel armor. Finally, a Viton O-ring seals differential pressure between the probe tip and case.

Installation Guide

Next, follow these steps for a reliable installation. First, drill and tap the mounting hole to match the 5/8-18 UNF thread. Second, thread the 330708-00-24-50-12-05 probe into the case and torque it to 15.2 N·m (133 in·lb). Third, set the probe gap according to the 11 mm system curve.

Additionally, connect the ClickLoc connector finger tight and avoid over-torque. Route the FluidLoc cable with a bend radius above 25.4 mm to prevent damage. However, do not expose the probe to temperatures below -34 °C during storage or operation. Finally, verify the total system length matches the 5-meter Proximitor Sensor.

Packaging List

• 1 × Bently Nevada 330708-00-24-50-12-05 11 mm Proximity Probe (5.0 m)

• 1 × Viton O-Ring (pre-installed)

FAQ

Q1: Can this 5-meter probe work with a 9-meter Proximitor Sensor?
A1: No, five-meter probes are designed for use with the five-meter Proximitor Sensor only.

Q2: What does the "12" option add to this probe?
A2: Option 12 adds a miniature coaxial ClickLoc connector and a FluidLoc cable that blocks oil leakage.

Q3: What is the recommended case torque for this probe?
A3: The recommended torque is 15.2 N·m (133 in·lb), with a maximum rating of 45.2 N·m (400 in·lb).

Q4: Is the probe pressure tested before shipment?
A4: No, probes are not pressure tested prior to shipment. Contact the custom design department if you need a pressure seal test.

Q5: How do you ship this product?
A5: We ship worldwide via Fedex, UPS, and DHL. Most orders dispatch within 1–2 business days.