The Bently Nevada 330906-02-12-10-02-00 is a reverse mount proximity probe from the 3300 NSv series. This model comes with a 1.0 meter (39 inches) total length and a miniature coaxial ClickLoc connector. It uses 3/8-24 UNF threads for mounting. Compared to the 3300 RAM probe, the Bently Nevada 330906-02-12-10-02-00 provides significantly improved chemical resistance. Therefore, it works well in many process compressor environments.
Superior Side-View Characteristics
The side-view characteristics of this NSv probe outperform those of the 3000-series 190 probe. Specifically, when gapping at the same distance from the target, the 330906-02-12-10-02-00 delivers more reliable measurements. Additionally, the patented TipLoc molding method creates a robust bond between the probe tip and body.
Connector and Thread Options
This probe uses a miniature coaxial ClickLoc connector with gold-plated brass contacts. ClickLoc connectors lock firmly into place and prevent loosening from vibration. The thread option is 3/8-24 UNF. All system components share the same high-quality connector standard.
Chemical Resistance Advantage
The NSv probe has increased chemical resistance compared to the older 3300 RAM probe. Consequently, this allows safe use in process compressors where aggressive media may be present.
DC Resistance
For the 330906-02-12-10-02-00, the probe length is 1.0 meter. Resistance from the center conductor to the outer conductor (RPROBE) measures 4.2 ± 0.5 ohms.
Field Wiring Guidelines
Use 0.2 to 1.5 mm² (16 to 24 AWG) wire. For best results, Bently Nevada recommends using three-conductor shielded triad cable. The maximum length between the 3300 XL NSv Proximitor Sensor and the monitor is 305 meters (1,000 feet). Note that longer field wiring lengths will cause signal rolloff at high frequencies.
Linear Range
The linear range spans 1.5 mm (60 mils). Linear operation begins at approximately 0.25 mm (10 mils) from the target. The full linear range runs from 0.25 to 1.75 mm (10 to 70 mils) , which corresponds to approximately -1 to -13 Vdc. The recommended gap setting is 1.0 mm (40 mils).
Probe Tip and Case Materials
The probe tip is made of Polyphenylene sulfide (PPS). The probe case uses AISI 304 stainless steel (SST). These materials provide excellent durability and chemical resistance.
Mounting Torque Requirements
For reverse mount probes like the 330906-02-12-10-02-00, the maximum rated torque is 22.6 N•m (200 in•lb). However, the recommended torque is 7.5 N•m (66 in•lb). Following this recommendation prevents damage while ensuring secure mounting.
Thread Engagement Length
The probe case thread is M10x1. Maximum length of thread engagement is 15 mm. Always verify sufficient engagement before tightening.
System Weight
The probe weight typically ranges from 14 to 150 g (0.5 to 5.3 oz) depending on the specific configuration.
Temperature Range
Operating and storage temperature both span -52°C to +177°C (-62°F to +351°F). However, exposing the probe to temperatures below -34°C (-30°F) for a sustained period may cause premature failure of the pressure seal. Therefore, avoid prolonged low-temperature exposure.
Pressure Sealing
The Bently Nevada 330906-02-12-10-02-00 is designed to seal differential pressure between the probe tip and case. The sealing material consists of a Viton O-ring. This design ensures reliable operation in pressurized compressor environments.
Preparation Steps
First, inspect the mounting threads and clean them thoroughly. Next, verify that the target surface is clean and within specifications. Apply 7.5 N•m (66 in•lb) of torque when installing the probe. Do not exceed the maximum rated torque of 22.6 N•m.
Gapping Procedure
Set the initial gap at the recommended 1.0 mm (40 mils). Use a proximity system calibration fixture or a precision gap tool. The linear range begins at 0.25 mm and extends to 1.75 mm. Therefore, the 1.0 mm gap provides optimal center positioning.
Cabling and Connections
Connect the miniature coaxial ClickLoc connector until it locks audibly. For field wiring, use three-conductor shielded triad cable up to 305 meters. Ensure proper grounding to avoid electrical noise interference.
Bently Nevada 330906-02-12-10-02-00 NSv reverse mount probe (1 unit)
Pre-installed 1.0 meter cable with ClickLoc connector
Protective cap for connector
Installation quick-start guide
Note: Proximitor sensors, extension cables, and mounting hardware are sold separately.
FedEx, UPS, DHL
1. What is the main advantage of the NSv probe over the 3300 RAM probe?
The Bently Nevada 330906-02-12-10-02-00 offers increased chemical resistance compared to the 3300 RAM probe. This makes it suitable for process compressor applications where aggressive chemicals are present.
2. What is the recommended gap setting for this probe?
The recommended gap setting is 1.0 mm (40 mils). The linear range runs from 0.25 mm to 1.75 mm (10 to 70 mils), so 1.0 mm provides the best operating center point.
3. Can I use this probe below -34°C?
Yes, but with caution. The probe operates down to -52°C. However, sustained exposure below -34°C (-30°F) may cause premature failure of the Viton O-ring pressure seal.
4. What torque should I apply when mounting the 330906-02-12-10-02-00?
Apply 7.5 N•m (66 in•lb) of torque. The maximum rated torque is 22.6 N•m (200 in•lb), but staying at the recommended value prevents thread or case damage.
5. How long can my field wiring be between the probe and monitor?
The maximum length is 305 meters (1,000 feet) when using three-conductor shielded triad cable. Be aware that longer lengths will cause signal rolloff at high frequencies.
| Brand Name | Bently Nevada |
| Model No. | 330906-02-12-10-02-00 |
| Product Type | Reverse Mount Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
