Bently Nevada 330909-00-80-05-02-00 Proximity Probe
This 330909-00-80-05-02-00 proximity probe belongs to the 3300 NSv transducer family from Bently Nevada. It measures shaft vibration and axial position in rotating machinery protection systems. The probe offers a 3/8-24 UNF thread, an 8.0-inch case, and a 0.5-metre (20 in) armored cable.
Key Technical Specifications
The probe cable uses 75 Ω coaxial construction with fluoroethylene propylene (FEP) insulation. At 0.5 metre length, the DC resistance from center conductor to outer conductor (RPROBE) is 4.0 ± 0.5 ohms. Additionally, the miniature coaxial ClickLoc connector locks firmly onto extension cables and resists loosening under vibration.
Furthermore, the probe case material is AISI 304 stainless steel (SST), while the probe tip uses polyphenylene sulfide (PPS). This combination delivers corrosion resistance and stable electrical performance in demanding plant environments.
Mechanical and Environmental Parameters
The 330909-00-80-05-02-00 operates within a temperature range of -52°C to +177°C (-62°F to +351°F) for both operating and storage conditions. However, sustained exposure below -34°C (-30°F) may cause premature failure of the pressure seal.
Moreover, the maximum rated case torque is 33.9 N·m (300 in·lb), with a recommended torque of 11.3 N·m (100 in·lb) for 3/8-24 or M10×1 probe cases. For the first three threads, use a maximum of 22.6 N·m (200 in·lb) and a recommended 7.5 N·m (66 in·lb). The maximum thread engagement is 0.563 in for the 3/8-24 thread.
The probe seals differential pressure between tip and case using a Viton O-ring. Note that probes are not pressure tested before shipment. Probe weight ranges from approximately 14 to 150 g (0.5 to 5.3 oz).
Installation Guidelines
First, verify that the probe length plus the extension cable length equals the Proximitor Sensor total length. This matching step keeps the measurement loop properly calibrated.
Next, mount the probe using the 3/8-24 UNF thread and observe the maximum engagement of 0.563 in. Apply the recommended torque of 11.3 N·m (100 in·lb) and never exceed 33.9 N·m (300 in·lb).
Additionally, tighten the first three threads carefully. Use a maximum of 22.6 N·m (200 in·lb) and a recommended 7.5 N·m (66 in·lb) during initial engagement to avoid cross-threading.
Then route the armored cable away from sharp edges and hot surfaces. Secure it with suitable clamps to minimize vibration-induced wear. Finally, connect the miniature coaxial ClickLoc connector firmly to the extension cable.
Packaging List
FAQ
Q1: What thread size does the 330909-00-80-05-02-00 use?
A: The 330909-00-80-05-02-00 features a 3/8-24 UNF thread with a maximum engagement length of 0.563 in.
Q2: What is the total cable length of this probe?
A: This probe provides a 0.5-metre (20 in) total length, shown by the 05 option code in the model number.
Q3: Does this probe include armor protection?
A: Yes, the 330909 base model includes stainless steel armor. The cable uses 75 Ω coaxial FEP insulation inside a flexible AISI 302 SST armor.
Q4: What torque should I apply to the probe case?
A: Apply a recommended 11.3 N·m (100 in·lb) and never exceed 33.9 N·m (300 in·lb). For the first three threads, use 7.5 N·m (66 in·lb) recommended and 22.6 N·m (200 in·lb) maximum.
Q5: Does this model carry agency approvals?
A: No, option code 00 means approval is not required. Confirm that your installation area does not demand hazardous-location certification.
