Bently Nevada 330701-00-10-50-12-00 Proximity Probe

Product Introduction

The Bently Nevada 330701-00-10-50-12-00 belongs to the trusted 3300 XL series, offering precise non-contact displacement measurement for rotating machinery. This 11 mm probe uses a 1/2-20 UNF thread and comes without armor, making it suitable for various installation setups. Its 5.0-meter total length is specifically engineered for use with the five-meter Proximitor Sensor. Furthermore, the probe incorporates a miniature coaxial ClickLoc connector with FluidLoc cable technology, which ensures a secure and reliable connection even in harsh conditions. Manufactured in the U.S.A., this model delivers the high quality and accuracy that Bently Nevada is known for.

Technical Specifications

Electrical Characteristics

The Bently Nevada 330701-00-10-50-12-00 exhibits a probe DC resistance (RPROBE) of 7.2 ± 0.8 ohms, measured from the center conductor to the outer conductor. Its cable impedance is rated at 75 Ω, featuring a triaxial, FEP-insulated design. The total probe length is fixed at 5.0 meters (16.4 feet), and this model is designed exclusively for use with five-meter Proximitor Sensors.

Mechanical Dimensions

This proximity probe incorporates a 1/2-20 UNF thread size with an unthreaded length of 0 inches (Option 00). Its overall case length measures 1.0 inch (Option 10), while the maximum thread engagement reaches 0.750 inches. Additionally, the minimum bend radius is 25.4 mm (1.0 inch), which applies whether the cable is armored or not.

Materials and Construction

The probe tip utilizes Polyphenylene sulfide (PPS), a material known for excellent chemical and thermal resistance. Meanwhile, the probe case is constructed from AISI 304 stainless steel (SST), providing superior corrosion protection in harsh environments. The cable insulation uses Fluoroethylene propylene (FEP) for enhanced durability and signal integrity. For connectivity, the unit features a miniature coaxial ClickLoc connector with FluidLoc cable technology.

Environmental and Operating Parameters

The Bently Nevada 330701-00-10-50-12-00 operates reliably across a wide temperature range from -51°C to +177°C (-60°F to +351°F) for both operation and storage. Its pressure seal design incorporates a Viton O-ring to effectively seal differential pressure between the probe tip and case. Agency approval is not required for this model (Option 00). However, users should note that exposing the probe to temperatures below -34°C (30°F) may cause premature failure of the pressure seal.

Installation and Mechanical Guidelines

Proper installation of the Bently Nevada 330701-00-10-50-12-00 ensures accurate and reliable measurements. Begin by verifying that the mounting threads are clean and undamaged before installation. Next, thread the probe into the mounting hole using the 1/2-20 UNF connection. For optimal performance, apply a recommended torque of 15.2 N•m (133 in•lb), while the maximum rated torque is 45.2 N•m (400 in•lb). Additionally, ensure the connector is finger-tightened to avoid over-torquing; the maximum connector-to-connector torque is 0.565 N•m (5 in•lb).

Pay careful attention to the cable routing during installation. The minimum bend radius of 25.4 mm (1.0 inch) must be maintained to prevent signal degradation or cable damage. Also, remember that this five-meter probe is specifically matched to the five-meter Proximitor Sensor – using it with other sensor lengths may result in incorrect readings. Furthermore, avoid exposing the probe to temperatures below -34°C (30°F) during operation, as this could cause premature failure of the pressure seal.

Packaging List

Your shipment of the Bently Nevada 330701-00-10-50-12-00 includes the following items:

• 1 x 3300 XL 11 mm Proximity Probe assembly with 5.0-meter cable

• 1 x Miniature coaxial ClickLoc connector (pre-installed on cable)

• 1 x FluidLoc cable assembly (integrated)

• 1 x Viton O-ring pressure seal (pre-installed)

Shipping Information

All orders are shipped via FedEx, UPS, or DHL with full tracking and insurance coverage.

Frequently Asked Questions

Q1: Can I use the Bently Nevada 330701-00-10-50-12-00 with a Proximitor Sensor of a different cable length?
A1: No, this five-meter probe is specifically designed for use with the five-meter Proximitor Sensor only. Using it with other sensor lengths will produce inaccurate measurement results.

Q2: What is the maximum torque I should apply when installing this probe?
A2: The maximum rated torque for the 1/2-20 UNF thread is 45.2 N•m (400 in•lb). However, Bently Nevada recommends applying only 15.2 N•m (133 in•lb) for optimal performance and to avoid damaging the threads or the probe case.

Q3: Is this probe suitable for high-pressure applications?
A3: The 330701-00-10-50-12-00 is designed to seal differential pressure between the tip and case using a Viton O-ring. However, Bently Nevada does not pressure-test these probes prior to shipment. Contact their custom design department if your application requires specific pressure seal testing.

Q4: What is the minimum bend radius for the probe cable?
A4: The minimum bend radius is 25.4 mm (1.0 inch) for both armored and non-armored versions. Exceeding this limit may damage the internal conductors and affect signal quality.

Q5: Can I operate this probe at temperatures below -34°C?
A5: While the probe's rated operating range extends down to -51°C, exposing it to temperatures below -34°C (30°F) may cause premature failure of the pressure seal. Bently Nevada recommends staying within the -34°C to +177°C range for optimal seal longevity.