The Bently Nevada 330702-20-30-10-01-05 is a rugged 11 mm proximity probe from the industry-leading 3300 XL series. Manufactured in the U.S.A., this probe delivers reliable non-contact vibration and position measurements for critical rotating machinery in harsh environments. Its armored cable construction provides enhanced mechanical protection against abrasion, impact, and wear, making it ideal for installations where cable durability is paramount. Additionally, the probe features a 1/2-20 UNF thread with a 2.0-inch unthreaded length and a 3.0-inch overall case length. The miniature coaxial ClickLoc connector with connector protector ensures secure, dependable signal transmission, while the "05" multiple approvals option enables installation in hazardous locations worldwide. Consequently, this probe is an excellent choice for turbines, compressors, and pumps operating in demanding conditions.
The 330702-20-30-10-01-05 combines robust mechanical design with consistent electrical performance. Its armored cable and high-quality materials ensure long-term reliability in severe industrial environments.
Electrical Characteristics
Probe DC Resistance: The RPROBE measures 5.9 ± 0.5 Ω for the 1.0-meter length, ensuring accurate signal transmission between the probe tip and the proximitor.
Cable Specification: The probe uses 75 Ω triaxial cable with fluoroethylene propylene (FEP) insulation, delivering excellent dielectric properties and signal stability over the cable's service life.
Linear Range: This 11 mm probe offers a 2 mm (80 mils) linear range. The linear response begins at approximately 0.25 mm from the target and extends to 2.3 mm (10 to 90 mils).
Recommended Gap Setting: For radial vibration measurements, we recommend setting the gap to -9 Vdc, which corresponds to approximately 1.27 mm (50 mils).
Mechanical Specifications
Probe Tip Material: The tip uses Polyphenylene sulfide (PPS), which provides outstanding chemical resistance and dimensional stability at elevated temperatures.
Probe Case Material: AISI 304 stainless steel (SST) ensures excellent corrosion resistance and mechanical strength for demanding applications.
Armored Cable: The 330702-20-30-10-01-05 includes armored cable construction, offering superior protection against mechanical damage compared to standard non-armored cables.
Thread Specification: The probe case features a 1/2-20 UNF thread with a maximum thread engagement length of 0.750 inches.
Unthreaded Length: The 2.0-inch unthreaded length option provides flexibility for applications requiring specific probe tip positioning relative to the mounting surface.
Overall Case Length: The 3.0-inch overall case length accommodates installations with deeper mounting holes or specific mechanical clearance requirements.
Case Torque Ratings: The maximum rated torque is 45.2 N•m (400 in•lb), while we recommend applying 15.2 N•m (133 in•lb) during installation to achieve proper seating without over-stressing the threads.
Connector Torque: The miniature coaxial ClickLoc connector should be finger-tightened initially, with a maximum torque of 0.565 N•m (5 in•lb).
Minimum Bend Radius: The cable maintains a minimum bend radius of 25.4 mm (1.0 in), both with and without stainless steel armor.
Environmental Specifications
Temperature Range: The 330702-20-30-10-01-05 operates and stores reliably from -52°C to +177°C (-62°F to +351°F). However, exposing the probe to temperatures below -34°C (30°F) may cause premature failure of the pressure seal.
Pressure Capability: The probe uses a Viton® O-ring to seal differential pressure between the probe tip and case. We do not pressure test probes prior to shipment. Therefore, please contact our custom design department if your application requires certified pressure seal testing.
Agency Approvals
This model features the "05" multiple approvals option, which includes CSA, ATEX, and IECEx certifications for hazardous area installation. Furthermore, it complies with FCC Part 15, EMC Directive 2014/30/EU, and RoHS Directive 2011/65/EU. It also meets maritime classification rules and is certified for functional safety applications up to SIL 3 with HFT = 1.
Mounting and Positioning
The Bently Nevada 330702-20-30-10-01-05 requires careful installation to achieve optimal performance and longevity. First, inspect the mounting hole and surrounding area to ensure it is clean, free from burrs, and properly threaded. Next, thread the probe into the mounting hole using the 1/2-20 UNF threads. Apply the recommended torque of 15.2 N•m (133 in•lb) to secure the probe without over-tightening. The 2.0-inch unthreaded length and 3.0-inch overall case length provide flexibility for precise positioning relative to the target surface.
Cable Routing and Protection
The armored cable construction provides enhanced mechanical protection. However, you must still maintain the minimum bend radius of 25.4 mm during cable routing to prevent internal conductor damage. Secure the cable with appropriate clamps at regular intervals to prevent strain on the connectors and the probe case. The armor also offers additional protection against abrasion and impact in high-traffic areas.
Connector Handling
The miniature coaxial ClickLoc connector provides a secure, positive-locking connection that resists vibration-induced loosening. Tighten the connector finger-tight initially, then apply up to 0.565 N•m (5 in•lb) maximum torque. The connector protector shields the connection from contamination, moisture, and mechanical stress, significantly enhancing long-term reliability in harsh environments.
Gap Setting and Calibration
For radial vibration monitoring, set the probe gap to -9 Vdc, corresponding to approximately 1.27 mm (50 mils). This setting ensures the probe operates within its linear range. Use a precision gap measurement tool or a calibrated voltage meter to verify the gap setting during installation. The linear range begins at 0.25 mm from the target and extends to 2.3 mm, providing a wide measurement window.
Packaging List
1x Bently Nevada 330702-20-30-10-01-05 Proximity Probe (11mm, armored, 1.0m cable)
Shipping Information
All orders ship via premium international carriers including FedEx, UPS, or DHL. Consequently, you can expect fast, reliable, and trackable delivery to your facility worldwide.
1. What is the advantage of the armored cable on this probe?
The armored cable on the Bently Nevada 330702-20-30-10-01-05 provides superior mechanical protection against abrasion, impact, and crushing forces. Therefore, it is ideal for installations where the cable may be exposed to harsh conditions or potential physical damage.
2. What is the difference between this probe and the non-armored version (330701)?
The primary difference is the armored cable construction on the 330702-20-30-10-01-05, which offers enhanced mechanical durability. Additionally, this model features different unthreaded and overall case length options (2.0 in and 3.0 in) compared to the 330701.
3. What approvals does the "05" option include?
The "05" multiple approvals option includes CSA, ATEX, and IECEx certifications. Consequently, this 3300 XL probe is suitable for installation in potentially explosive atmospheres worldwide.
4. Why does the probe require a specific gap setting?
The recommended -9 Vdc gap setting (approximately 1.27 mm) ensures the probe operates within its linear range, providing accurate and repeatable vibration measurements. Operating outside this range may result in non-linear response and measurement errors.
5. Can I use this probe with existing 3300 XL extension cables?
Yes, the 330702-20-30-10-01-05 is fully compatible with all 3300 XL series extension cables. The miniature coaxial ClickLoc connector interfaces directly with matching extension cable connectors for a secure connection.
| Brand Name | |
| Model No. | 330702-20-30-10-01-05 |
| Product Type | Proximity Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
