3300 XL 11mm Probe 330708-00-10-90-01-00 Bently Nevada

Product Introduction

The Bently Nevada 330708-00-10-90-01-00 is a long-cable variant of the renowned 3300 XL series proximity probes. Specifically, this model delivers an 11 mm sensing diameter with a standard 5/8-18 UNF thread and comes without armor. The most distinctive feature of this configuration is its 9.0-meter (29.5 feet) total cable length, which enables remote mounting of the monitoring electronics far from the measurement point. Consequently, this 3300 XL 11 mm probe is ideal for large machinery installations where the proximity probe system must be positioned at a significant distance. The "00" agency approval option indicates no specific certifications are required, which streamlines the procurement process for many industrial applications.

Technical Specifications

This section details the core technical parameters of the Bently Nevada 330708-00-10-90-01-00. First, the probe tip utilizes polyphenylene sulfide (PPS), offering excellent dimensional stability and resistance to chemicals and moisture. Meanwhile, the probe case is manufactured from AISI 304 stainless steel (SST), providing robust mechanical protection and corrosion resistance. The probe cable is a 75 Ω triaxial type with fluoroethylene propylene (FEP) insulation, ensuring superior signal integrity over extended distances. Additionally, the 330708-00-10-90-01-00 specifically includes the 9.0-meter cable length option, making it suitable for deep installations or large rotating equipment. For electrical characteristics, the DC resistance from the center conductor to the outer conductor (RPROBE) is 8.5 ± 1.1 ohms, reflecting the longer cable run. The agency approval option "00" confirms that no specific agency certifications are required for this configuration.

Long-Cable Performance Considerations

The extended 9.0-meter cable on this model introduces specific performance characteristics worth understanding. Essentially, the DC resistance increases slightly with cable length, measuring 8.5 ± 1.1 ohms compared to 7.2 ± 0.8 ohms for the 5.0-meter version. Consequently, the system electronics must accommodate this slightly higher resistance, which the 3300 XL drivers are designed to handle. Specifically, the 75 Ω triaxial FEP construction maintains excellent signal-to-noise ratio even at this longer length. Furthermore, the cable's FEP insulation provides outstanding dielectric properties, minimizing signal attenuation over the full 9.0 meters. Therefore, the 330708-00-10-90-01-00 delivers reliable performance even in installations requiring extended cable runs between the probe tip and the monitoring rack.

Mechanical and Environmental Parameters

The mechanical specifications ensure dependable operation in various industrial environments. For instance, the 5/8-18 UNF probe case thread has a maximum length of thread engagement of 0.938 inches. When installing, the recommended torque for the probe case is 15.2 N•m (133 in•lb), while the maximum rated torque is 45.2 N•m (400 in•lb). Furthermore, the connector-to-connector torque should be finger tight, with a maximum of 0.565 N•m (5 in•lb). The minimum bend radius for the cable is 25.4 mm (1.0 inch), applicable with or without SST armor. Regarding environmental resilience, the operating and storage temperature range is -51°C to +177°C (-60°F to +351°F). However, exposing this 3300 XL probe to temperatures below -34°C (30°F) may cause premature failure of the pressure seal. Additionally, the probe incorporates a Viton O-ring to seal differential pressure between the tip and the case, though probes are not pressure tested prior to shipment.

Installation Guidelines for Long-Cable Models

Proper installation of the Bently Nevada 330708-00-10-90-01-00 requires attention to cable management due to the extended 9.0-meter length. Initially, verify the thread engagement does not exceed 0.938 inches for the 5/8-18 UNF thread. Next, carefully route the 9.0-meter FEP cable while maintaining a bend radius above 25.4 mm to prevent cable damage or signal degradation. Specifically, plan the cable path to avoid sharp bends, pinch points, or contact with moving machinery components. When tightening the probe case, apply the recommended torque of 15.2 N•m to avoid mechanical stress. Additionally, tighten the ClickLoc connector to finger tightness plus the specified maximum torque. Meanwhile, protect the PPS probe tip from impact damage during handling. Since the probe is not pressure tested prior to shipment, consider contacting the custom design department if your application requires a pressure seal test.

Packaging and Logistics

Every new Bently Nevada 330708-00-10-90-01-00 is shipped in secure packaging to prevent transit damage. For each order, the standard packaging includes one 3300 XL 11 mm probe assembly with the 9.0-meter cable as specified. The gross weight is just 0.17 kg, enabling cost-effective shipping options despite the longer cable. Furthermore, all orders are dispatched using premier global couriers such as Fedex, UPS, and DHL. Therefore, you can expect fast and fully trackable delivery to your facility worldwide. This streamlined logistics process minimizes operational downtime and facilitates quick installation of your monitoring system.

Frequently Asked Questions (FAQ)

1. What is the main advantage of the 9.0-meter cable length?
The extended cable allows remote mounting of monitoring electronics up to 29.5 feet from the probe tip.

2. Does the longer cable affect measurement accuracy?
No, the 75 Ω triaxial FEP design maintains signal integrity; the DC resistance is 8.5 ± 1.1 ohms, which the system accommodates.

3. Why does this model have "00" agency approval?
The "00" option means no specific agency certifications are required, simplifying procurement for many applications.

4. What is the recommended torque for installation?
The recommended torque is 15.2 N•m (133 in•lb) for the probe case and finger tight for the connector.

5. Can this probe be used in outdoor installations?
Yes, it operates from -51°C to +177°C, but avoid exposure below -34°C to protect the pressure seal.