The Bently Nevada 330901-00-32-05-02-00 belongs to the 3300 NSv series of proximity probes, which are specifically designed for monitoring smaller rotating machinery. This model features a 1/4-28 UNF thread without armor, paired with a 3.2-inch overall case length and a compact 0.5-meter coaxial cable. It uses a miniature ClickLoc connector with standard cable construction. Furthermore, the probe's reduced physical size makes it ideal for installations where space is constrained, such as gearboxes, small compressors, and auxiliary pumps. The AISI 304 stainless steel case and PPS tip ensure reliable operation across demanding temperature conditions.
Electrical Characteristics
The probe's DC resistance from the center conductor to the outer conductor is 4.0 ± 0.5 ohms for the 0.5-meter configuration. Meanwhile, the cable maintains a 75 Ω coaxial impedance, which differs from the triaxial specification found in the 3300 XL series. This impedance matching ensures stable signal transmission over the short cable run.
Mechanical Dimensions
Unthreaded Length Option: 00 = 0.0 inches
Overall Case Length Option: 32 = 3.2 inches
Total Length Option: 05 = 0.5 meter (20 inches)
Connector Option: 02 = Miniature coaxial ClickLoc connector, standard cable
Agency Approval Option: 00 = Not required
Materials and Construction
Probe Tip: Polyphenylene sulfide (PPS) – provides excellent chemical resistance and dimensional stability.
Probe Case: AISI 304 stainless steel (SST) – delivers reliable corrosion protection.
Cable Insulation: Fluoroethylene propylene (FEP) – ensures thermal stability across the operating range.
The 3300 NSv series is Bently Nevada's dedicated solution for monitoring smaller machinery where traditional 11 mm probes are physically too large. The NSv designation stands for "Narrow Sensor, vintage," reflecting its compact form factor. Compared to the 3300 XL series, this probe offers a smaller thread size, reduced case diameter, and lower weight – approximately 14 to 150 grams (0.5 to 5.3 oz) depending on configuration. This makes the 330901 model particularly suitable for machines with limited mounting space or small shaft diameters. The 0.5-meter total length is the shortest available option, minimizing cable management requirements in tight installations.
Temperature Range
Operating and Storage: -52°C to +177°C (-62°F to +351°F)
However, prolonged exposure below -34°C (-30°F) may accelerate seal degradation and reduce service life.
Pressure Sealing
The probe is designed to seal differential pressure between the tip and case using a Viton® O-ring. Nevertheless, Bently Nevada does not perform pressure testing on individual units prior to shipment. For applications requiring certified pressure seal validation, please contact the custom design department for additional testing services.
Thread and Torque Specifications
Case Thread: 1/4-28 UNF
Maximum Thread Engagement: 0.375 inches
Maximum Rated Torque: 7.3 N•m (65 in•lb)
Recommended Installation Torque: 5.1 N•m (45 in•lb)
Connector-to-Connector Torque: Finger tight (maximum 0.565 N•m / 5 in•lb)
Note: The torque values for the 1/4-28 thread are significantly lower than the 1/2-20 and 5/8-18 probes. Exercise particular care during installation to avoid over-tightening, which can strip the fine threads or damage the internal sensing coil.
First, verify that the mounting hole matches the 1/4-28 UNF thread specification and that the target surface is clean and within the probe's sensing range. Next, thread the Bently Nevada 330901-00-32-05-02-00 probe gently into the mounting hole, applying the recommended torque of 5.1 N•m – do not exceed the 7.3 N•m maximum rating. The 1/4-28 thread is finer than larger probe threads, so careful alignment is essential to prevent cross-threading. Then, connect the ClickLoc connector by hand until it clicks securely; tools are not required. Finally, route the 0.5-meter cable with a minimum bend radius of 25.4 mm (1.0 inch) to avoid stressing the internal conductor. For optimal system performance, pair this probe with a compatible 3300 NSv driver and extension cable (if needed).
1 x Bently Nevada 330901-00-32-05-02-00 Proximity Probe (with 0.5 m coaxial cable and ClickLoc connector)
1 x Installation instruction sheet
1 x Protective tip cover for handling and storage
All orders are dispatched via FedEx, UPS, or DHL with tracking numbers provided. Standard delivery typically takes 3 to 5 business days. For urgent requirements, expedited shipping is available – please contact our sales team for arrangements.
1. What machinery is the 3300 NSv series designed for?
The 3300 NSv series is specifically engineered for smaller rotating equipment, including gearboxes, small pumps, turbochargers, and auxiliary compressors where standard 11 mm probes cannot fit due to space constraints.
2. What is the total cable length of the 330901-00-32-05-02-00?
This model comes with a 0.5-meter (20-inch) cable, which is the shortest available option in the NSv series. It is ideal for installations where the driver is mounted close to the probe location.
3. Why is the torque rating lower for the 1/4-28 thread?
The 5.1 N•m recommended torque reflects the smaller thread diameter and finer pitch of the 1/4-28 UNF specification. Exceeding this value can strip the threads or damage the probe case. Always use a calibrated torque wrench during installation.
4. Can I use this probe with 3300 XL series extension cables?
No, the 3300 NSv series uses coaxial cable (75 Ω) while the 3300 XL series uses triaxial cable. These are not interchangeable. Please use only genuine 3300 NSv extension cables and drivers for proper system operation.
5. How do I verify the probe gap during installation?
Use a 3300 NSv proximity driver and a voltmeter to monitor the output voltage while adjusting the probe position. Target the recommended DC bias voltage specified in the driver manual – typically around -10 Vdc for the linear operating range.
| Brand Name | |
| Model No. | 330901-00-32-05-02-00 |
| Product Type | Proximity Probes |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
