Bently Nevada 330707-00-25-10-12-00 Proximity Probe

3300 XL 11mm Probe, Bently Nevada 330707

Product Introduction

The Bently Nevada 330707-00-25-10-12-00 belongs to the trusted 3300 XL series, widely used for non-contact vibration and displacement measurement. This sensor offers a robust design with a PPS probe tip and a 304 stainless steel case. Its 1.0-meter total length includes a durable FEP-insulated cable. The probe provides reliable performance in harsh industrial environments, with an operating range from -51°C to +177°C.

Technical Specifications

This 3300 XL 11 mm probe offers precise DC resistance characteristics. For the 1.0-meter length, the resistance from the center conductor to the outer conductor (RPROBE) is 5.9 ± 0.5 ohms. The cable is a 75 Ω triaxial type with FEP insulation.

The probe tip uses Polyphenylene sulfide (PPS) for excellent chemical resistance. Its case is constructed from AISI 304 stainless steel (SST) to withstand corrosion. Consequently, this sensor is suitable for long-term installation in steam turbines, compressors, and pumps. Additionally, the connector type is the miniature coaxial ClickLoc with FluidLoc cable, ensuring a secure and reliable connection.

Furthermore, this model does not require agency approvals, as indicated by the "00" option. The overall case length is 2.5 inches, and the unthreaded length is 0 inches. The 330707-00-25-10-12-00 is manufactured in the U.S.A. and follows strict quality standards.

Mechanical and Environmental Parameters

Understanding the mechanical limits is crucial for proper installation. The probe case thread is 5/8-18 UNF, with a maximum thread engagement of 0.938 inches. The recommended installation torque for the case is 15.2 N•m (133 in•lb), while the maximum rated torque is 45.2 N•m (400 in•lb).

The connector requires only finger-tight torque, with a maximum of 0.565 N•m (5 in•lb). Meanwhile, the minimum bend radius for the cable is 25.4 mm (1.0 inch), with or without stainless steel armor. This flexibility simplifies routing in tight spaces.

For environmental conditions, the operating and storage temperature ranges from -52°C to +177°C (-62°F to +351°F). However, exposing the Bently Nevada 330707 probe to temperatures below -34°C (30°F) may cause premature failure of the pressure seal. Therefore, avoid low-temperature exposure during storage or operation.

The probe is designed to seal differential pressure between the tip and case using a Viton O-ring. However, it is not pressure tested before shipment. For applications requiring a pressure seal test, please contact the custom design department.

Installation Guidelines

Proper installation of the 3300 XL 11 mm probe ensures accurate measurements and long service life. First, clean the mounting hole threads thoroughly before installation. Then, apply a thin layer of anti-seize compound to the probe case threads to prevent galling.

Next, thread the probe into the mounting hole by hand until finger-tight. After that, use a wrench to tighten it to the recommended torque of 15.2 N•m (133 in•lb). Avoid exceeding the maximum torque of 45.2 N•m (400 in•lb) to prevent damage. Meanwhile, route the cable with a bend radius greater than 25.4 mm to avoid signal degradation.

Finally, connect the ClickLoc connector to the extension cable by hand. Tighten it to a maximum of 0.565 N•m. Remember to leave a service loop near the probe for future adjustments. This practice simplifies maintenance without stressing the cable.

Packaging List

The package for the Bently Nevada 330707-00-25-10-12-00 includes the following items:

• 1 x 3300 XL 11 mm Proximity Probe (with 1.0m cable and ClickLoc connector)

• 1 x Installation and Operation Manual (digital copy available upon request)

• 1 x Certificate of Origin (printed on request)

Frequently Asked Questions (FAQ)

Q1: What is the total length of the Bently Nevada 330707-00-25-10-12-00 probe?
A1: The total length is 1.0 metre (approximately 3.3 feet), as indicated by the "10" option in the model number.

Q2: Can this 3300 XL probe be used in high-pressure environments?
A2: Yes, it is designed to seal differential pressure. However, it is not pressure tested before shipment. For critical applications, we recommend contacting the manufacturer for a custom pressure seal test.

Q3: What connector type does the Bently Nevada 330707 use?
A3: It uses a miniature coaxial ClickLoc connector with FluidLoc cable. This ensures a secure and vibration-resistant connection.

Q4: What is the recommended torque for the probe case?
A4: The recommended installation torque is 15.2 N•m (133 in•lb). The maximum rated torque is 45.2 N•m (400 in•lb).

Q5: What is the minimum bend radius for the probe cable?
A5: The minimum bend radius is 25.4 mm (1.0 inch), both with and without SST armor. Exceeding this limit may damage the cable and affect signal quality.