Bently Nevada 330906-02-12-70-02-CN NSv Reverse Mount Probe
Introduction:
3300 NSv Reverse Mount Probe with 7.0 meter cable. 3/8-24 UNF threads. Standard cable with ClickLoc connector.
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Product Overview
Probe Design and Chemical Resistance
The Bently Nevada 330906-02-12-70-02-CN is a 3300 NSv Reverse Mount Probe manufactured in the USA. Therefore, this probe offers increased chemical resistance compared to the 3300 RAM probe. Consequently, the 330906-02-12-70-02-CN suits many process compressor applications. The side-view characteristics are also superior to those of the 3000-series 190 probe. As a result, you get more accurate measurements when gapping at the same distance from the probe target.
Thread and Connector Specifications
The reverse mount 3300 NSv probe comes standard with either 3/8-24 or M10X1 threads. Therefore, the 330906-02-12-70-02-CN uses 3/8-24 UNF threads for secure installation. All components of the transducer system feature gold-plated brass ClickLoc connectors. Consequently, these connectors lock into place and prevent loosening from vibration. The standard cable option includes connector protectors for environmental sealing.
Patented Manufacturing Methods
The patented TipLoc molding method provides a robust bond between the probe tip and the probe body. Therefore, the probe withstands harsh industrial environments without failure. The probe cable is securely attached to the probe tip using the patented CableLoc design. Consequently, the connection provides exceptional pull strength for reliable operation.
Ordering Information and Model Breakdown
The Bently Nevada 330906-02-12-70-02-CN follows a specific ordering code structure.
| Code Position | Value | Meaning |
|---|---|---|
| 330906 | Base Model | 3300 NSv Reverse Mount Probe |
| 02 | Thread Option | 3/8-24 UNF threads |
| 12 | Unused Option | Standard configuration |
| 70 | Total Length | 7.0 meters (23.0 feet) |
| 02 | Connector Option | Miniature coaxial ClickLoc connector, standard cable |
| CN | Agency Approval | Country Specific |
Technical Specifications
General Specifications
Manufacturer: Bently Nevada
Product Number: 330906-02-12-70-02-CN
Product Type: 3300 NSv Reverse Mount Probe
Series: 3300 NSv
Country of Origin: Made in U.S.A.
Thread Type: 3/8-24 UNF
Total Length: 7.0 meters (23.0 feet)
Connector Type: Miniature coaxial ClickLoc connector with standard cable
Agency Approval: Country Specific (CN)
Probe DC Resistance
Probe Length: 7.0 meters
Resistance (RPROBE): 5.9 ± 0.9 ohms (center conductor to outer conductor)
Linear Range and Gap Settings
Linear Range: 1.5 mm (60 mils)
Linear Range Start: Approximately 0.25 mm (10 mils) from target
Linear Range End: 0.25 to 1.75 mm (10 to 70 mils)
Output Voltage Range: Approximately -1 to -13 Vdc
Recommended Gap Setting: 1.0 mm (40 mils)
Mechanical Specifications
Probe Tip Material: Polyphenylene sulfide (PPS)
Probe Case Material: AISI 304 stainless steel (SST)
Torque Ratings for 3/8-24 Threads
| Torque Type | Rating |
|---|---|
| Maximum Rated Torque | 33.9 N•m (300 in•lb) |
| Recommended Torque | 11.3 N•m (100 in•lb) |
System Weight
Probe Weight Range: Approximately 14 to 150 grams (0.5 to 5.3 oz)
Typical Weight for 7.0m Probe: Approximately 350 grams (12.3 oz)
Temperature Range
Operating Temperature: -52°C to +177°C (-62°F to +351°F)
Storage Temperature: -52°C to +177°C (-62°F to +351°F)
Low Temperature Warning: Sustained exposure below -34°C (-30°F) may cause premature pressure seal failure
Pressure Specifications
Pressure Seal Material: Viton O-ring
Sealing Function: Seals differential pressure between probe tip and case
Field Wiring Specifications
Wire Size Range: 0.2 to 1.5 mm² (16 to 24 AWG)
Wire Size with Ferrules: 0.25 to 0.75 mm² (18 to 23 AWG)
Recommended Cable: Three-conductor shielded triad cable
Maximum Field Wiring Length: 305 meters (1,000 feet) between the 3300 XL NSv Proximitor Sensor and the monitor
High Frequency Rolloff: See frequency response graphs for signal degradation with longer cables
Installation Guide
Follow these steps to install the Bently Nevada 330906-02-12-70-02-CN correctly.
Prepare Mounting Hole: First, ensure the 3/8-24 UNF threaded hole is clean and undamaged.
Apply Lubricant: Next, apply anti-seize compound to the probe threads for easier installation.
Hand Tighten Probe: Then, thread the 330906-02-12-70-02-CN into the mounting hole by hand.
Torque to Specification: After that, tighten to 11.3 N•m (100 in•lb) recommended torque.
Connect Cable: Meanwhile, attach the miniature coaxial ClickLoc connector until it locks.
Set Gap: Finally, adjust the probe gap to 1.0 mm (40 mils) for optimal performance.
The 330906-02-12-70-02-CN requires careful attention to torque limits. Therefore, do not exceed 33.9 N•m (300 in•lb) maximum rated torque. In addition, avoid sustained low temperatures below -34°C to protect the pressure seal. Consequently, proper installation ensures long-term reliability and measurement accuracy.
Package List
The package includes the following physical items.
Bently Nevada 330906-02-12-70-02-CN reverse mount probe (1 piece)
Miniature coaxial ClickLoc connector with standard cable (attached)
Connector protectors (installed on connector)
Viton O-ring pressure seal (pre-installed)
Silicone tape (1 roll)
Product label with part number and ordering codes
Note: The Proximitor Sensor is not included with this probe. Mounting hardware and anti-seize compound are sold separately. No calibration certificate is provided with this probe.
Frequently Asked Questions (FAQ)
1. What is the length of the 330906-02-12-70-02-CN probe?
The Bently Nevada 330906-02-12-70-02-CN has a total length of 7.0 meters (23.0 feet). Therefore, the ordering code position 70 indicates this length option. Consequently, this probe suits applications requiring extended cable runs. The DC resistance is 5.9 ± 0.9 ohms for this specific length.
2. What thread type does this reverse mount probe use?
The Bently Nevada 330906-02-12-70-02-CN uses 3/8-24 UNF threads. Therefore, the ordering code position 02 indicates this thread option. In addition, reverse mount probes are also available with M10X1 threads. Consequently, always verify your mounting hole thread before ordering.
3. What is the recommended gap setting for this probe?
The Bently Nevada 330906-02-12-70-02-CN has a recommended gap setting of 1.0 mm (40 mils). Therefore, this gap provides optimal linear range performance. The linear range extends from 0.25 mm to 1.75 mm (10 to 70 mils). Consequently, the output voltage ranges from approximately -1 to -13 Vdc at these gaps.
4. What is the maximum torque for the 330906-02-12-70-02-CN?
The Bently Nevada 330906-02-12-70-02-CN has a maximum rated torque of 33.9 N•m (300 in•lb). However, the recommended torque is only 11.3 N•m (100 in•lb). Therefore, always use the lower recommended value for installation. Exceeding the maximum torque may damage the probe case or threads.
5. What type of cable does this probe use?
The Bently Nevada 330906-02-12-70-02-CN uses a miniature coaxial ClickLoc connector with standard cable. Therefore, connector protectors are included for environmental sealing. Silicone tape is also provided as an alternative sealing method. Consequently, the standard cable suits most industrial applications without special fluid sealing.
6. What is the operating temperature range of this probe?
The Bently Nevada 330906-02-12-70-02-CN operates from -52°C to +177°C (-62°F to +351°F). Therefore, this probe performs reliably in extreme temperature conditions. However, sustained exposure below -34°C (-30°F) may cause premature pressure seal failure. Consequently, consider alternative probes for continuous ultra-low temperature applications.
7. What country specific approvals does this probe carry?
The Bently Nevada 330906-02-12-70-02-CN with option code CN has country specific approvals. Therefore, these approvals vary depending on the destination country. Contact Bently Nevada for the specific approvals applicable to your region. Consequently, verify your local requirements before ordering this configuration.
Related Accessories
Enhance your 3300 NSv monitoring system with these compatible parts.
Proximitor Sensor: Bently Nevada 3300 XL NSv Proximitor Sensor for signal conditioning
Extension Cable: Bently Nevada 3300 XL extension cable for additional length
Mounting Hardware: Bently Nevada 3300 NSv mounting nuts and washers
Anti-Seize Compound: Bently Nevada recommended lubricant for thread installation
Shielded Triad Cable: Three-conductor shielded cable for field wiring up to 305 meters
Always use genuine Bently Nevada components with the 330906-02-12-70-02-CN. Therefore, third-party cables or connectors may cause signal degradation or connection failures. In addition, verify thread compatibility before ordering. Consequently, using authentic parts ensures optimal measurement accuracy and maintains country specific approvals.