3300 XL 11 mm Probe 330708-00-24-50-01-05 Bently Nevada

Bently Nevada 330708-00-24-50-01-05 Proximity Probe

Product Introduction

The 330708-00-24-50-01-05 belongs to the Bently Nevada 3300 XL series, a well-established family of eddy current proximity transducers for condition monitoring. Specifically, this model is an 11 mm probe with a 2.4-inch case length and a 5-metre total cable length. It features a 5/8-18 UNF thread and a miniature coaxial ClickLoc connector with an added connector protector. Engineers choose this probe for non-contact measurement of vibration, radial and axial displacement, and keyphasor signals on fluid-film bearing machines. Its larger 11 mm tip delivers a longer linear range than standard 8 mm probes. Moreover, the probe operates reliably across a broad temperature span from -51°C to +177°C.

Technical Specifications

The 330708-00-24-50-01-05 carries several options that define its physical and electrical characteristics. First, the unthreaded length is 0 inches, and the overall case length is 2.4 inches. Next, the total length option "50" indicates a 5-metre cable. The connector option "01" specifies a standard cable with a miniature coaxial ClickLoc connector and connector protector. Additionally, the agency approval option "05" denotes multiple approvals. The probe DC resistance from center conductor to outer conductor measures 7.2 ± 0.8 ohms for the 5 m version.

Key electrical and material parameters are listed below:

• Probe Tip Material: Polyphenylene sulfide (PPS)

• Probe Case Material: AISI 304 stainless steel (SST)

• Cable Type: 75 Ω triaxial, FEP insulated

• Connector Torque (Maximum): 0.565 N·m (5 in·lb)

• Minimum Bend Radius: 25.4 mm (1.0 in)

Mechanical and Environmental Parameters

The probe case uses a 5/8-18 UNF thread. Maximum thread engagement length reaches 0.938 inches. For installation torque, the recommended value is 15.2 N·m (133 in·lb), while the maximum rated torque is 45.2 N·m (400 in·lb). Besides, the operating and storage temperature range extends from -51°C to +177°C (-60°F to +351°F). The probe seals differential pressure between the tip and case using a Viton O-ring. However, note that probes are not pressure tested before shipment. Exposing the probe to temperatures below -34°C may cause premature failure of the pressure seal. The shipping weight is approximately 0.17 kg.

Installation Guide

Proper installation ensures measurement accuracy and probe longevity. First, prepare the mounting point with the correct 5/8-18 UNF threaded hole. Next, apply the recommended torque of 15.2 N·m to secure the probe case. Do not exceed the maximum rated torque of 45.2 N·m. Route the cable carefully, and observe the minimum bend radius of 25.4 mm. Then, connect the ClickLoc connector to the extension cable or proximitor sensor. Finger-tighten the connector, and avoid exceeding 0.565 N·m. Finally, verify the probe DC resistance at the connector to confirm cable integrity before system commissioning. Importantly, five-metre probes are designed for use with the five-metre Proximitor Sensor only, so confirm sensor compatibility before wiring.

Packaging List

• 1 × Bently Nevada 330708-00-24-50-01-05 Proximity Probe

• 1 × Locknut with predrilled safety wire holes

• 1 × Protective cable cap

• 1 × Connector protector

FAQ

Q1: What is the total cable length of this probe?
A1: The 330708-00-24-50-01-05 includes a 5-metre (16.4 feet) cable. This length suits longer cable runs between the machine and the proximitor.

Q2: Which Proximitor Sensor should I pair with this probe?
A2: This probe works only with the five-metre Proximitor Sensor. Mixing lengths causes incorrect readings and unreliable measurements.

Q3: Does this probe include a connector protector?
A3: Yes. The connector option "01" adds a miniature coaxial ClickLoc connector with a connector protector for extra mechanical and environmental shielding.

Q4: What is the maximum tightening torque for the probe case?
A4: The maximum rated torque is 45.2 N·m (400 in·lb). However, Bently Nevada recommends 15.2 N·m (133 in·lb) for normal installation.

Q5: What shipping methods do you offer?
A5: We ship worldwide via Fedex, UPS, and DHL. All orders include tracking and careful packaging for industrial components.