330102-03-25-10-02-05 Bently Nevada - 8 mm Probe

Bently Nevada 330102-03-25-10-02-05 belongs to the trusted 3300 XL 8 mm Proximity Probe series. We engineered this probe for permanent vibration and position monitoring in harsh turbomachinery. It delivers precise, linear displacement measurements with a rugged armor and PPS tip. 

Key technical specifications

• Brand: Bently Nevada. Model: 330102-03-25-10-02-05 (3300 XL 8 mm).
• Linear range: 2 mm (80 mils). Span from 0.25 to 2.3 mm (–1 to –17 Vdc).
• Recommended gap: –9 Vdc ≈ 1.27 mm (50 mils) for radial vibration.
• Probe tip material: Polyphenylene sulfide (PPS). Case: AISI 303/304 SST.
• DC resistance (RPROBE): 7.59 ± 0.50 Ω (1.0 m length).
• Temperature range: -52°C to +177°C (-62°F to +350°F).
• Relative humidity: Less than 3% ASF change after 56 days at 93% RH (IEC 68-2-3).
• Thread size: 3/8-24 UNF. Max engagement: 0.563 in. Probe mass: 323 g/m (11.4 oz/ft).
• Connector: Miniature coaxial ClickLoc with standard cable.
• Pressure seal: Viton® O-ring, differential pressure design.
• Agency approvals: CSA, ATEX, IECEx (option 05).
• Unthreaded length: 0.3 inches. Overall case length: 2.5 inches.
• Total probe length: 1.0 meter (3.3 feet).

Temperature classification schedule

• For EPL Ga and Gc (intrinsically safe):
• T1: Ambient -55°C to +232°C
• T2: Ambient -55°C to +177°C
• T3: Ambient -55°C to +120°C
• T4: Ambient -55°C to +80°C
• T5: Ambient -55°C to +40°C
• For EPL Dc (dust):
• T280°C @ Ta: Ambient -55°C to +232°C
• T225°C @ Ta: Ambient -55°C to +177°C
• T170°C @ Ta: Ambient -55°C to +120°C
• T130°C @ Ta: Ambient -55°C to +80°C
• T105°C @ Ta: Ambient -55°C to +100°C
• T90°C @ Ta: Ambient -55°C to +40°C

Installation and wiring guidelines

• Use 3-conductor shielded triad cable, 0.2 to 1.5 mm² (16 to 24 AWG).
• Maximum field wiring length: 305 meters (1,000 feet) to monitor.
• Recommended gap setting: -9 Vdc for radial vibration applications.
• Thread engagement max: 0.563 inch. Do not exceed this limit.
• The 0.3 inch unthreaded section allows fine positioning before threads engage.
• Intrinsically safe: Class I, Zone 0 with zener barriers per drawing 141092.
• Non-incendive: Class I, Zone 2 per drawing 140979.
• Select temperature class based on maximum ambient conditions.

Environmental and mechanical resistance

• Standard operating temperature: -52°C to +177°C (-62°F to +350°F).
• Extended tip rating: up to +218°C. Cable rating: up to +260°C.
• Below -34°C, pressure seal may fail prematurely. Take caution.
• Humidity tested: Less than 3% ASF shift after 56 days at 93% RH.
• Probe case: AISI 303/304 stainless steel for corrosion resistance.
• Probe tip: Polyphenylene sulfide (PPS) offers high durability.

What's in the package

• 1x Bently Nevada 330102-03-25-10-02-05 probe with armor.
• 1x Miniature coaxial ClickLoc connector (pre-attached).
• Factory configuration sheet with mechanical drawing.
• Standard Bently Nevada installation manual.
• Agency approval certificates (CSA, ATEX, IECEx).
• Temperature classification documentation.

Shipping options

• FedEx International Priority.
• UPS Worldwide Express.
• DHL Express Easy.
• All orders ship within 24 hours.

Frequently asked questions

What is the benefit of 0.3 inch unthreaded length?

The 0.3 inch unthreaded section gives you fine adjustment capability before threads engage. This helps achieve precise -9 Vdc gap positioning without bottoming out, especially in applications requiring exact clearance.

How do I select the correct temperature classification?

Review the temperature classification table based on your maximum ambient temperature and EPL rating. For example, use T2 rating for ambients up to 177°C in Zone 0 installations. 330102-03-25-10-02-05 supports multiple T ratings.

What approvals does the 05 option include?

The 05 agency approval option includes CSA, ATEX, and IECEx certifications. This makes 330102-03-25-10-02-05 suitable for hazardous area installations requiring multiple international approvals with detailed temperature ratings.

Can I use this probe with a 5 meter Proximitor?

No. 5-meter probes require a 5-meter Proximitor sensor. This 1.0 meter probe works with standard Proximitors. Always match total length to sensor type for proper calibration.

What is the maximum thread engagement depth?

Maximum thread engagement is 0.563 inch. With 0.3 inch unthreaded section, you have 0.3 inches of positioning freedom before threads begin. Total threaded portion available is 2.2 inches (2.5 case minus 0.3 unthreaded).