Bently Nevada 330105-02-12-90-02-05 Reverse Mount Probe

Bently Nevada 330105-02-12-90-02-05 Reverse Mount Probe

Product Introduction

The Bently Nevada 330105-02-12-90-02-05 extends the 3300 XL series with a longer 9.0-meter cable. You get the same reverse mount design but with extra reach. This probe measures shaft vibration and axial position in turbomachinery. The Miniature ClickLoc coaxial connector provides a secure, tool-free connection. Additionally, the -05 agency approval includes CSA, ATEX, and IECEx certifications. You can safely install this probe in Class I, Zone 0 or Zone 2 hazardous locations.

Technical Specifications

DC Resistance and Electrical Performance

The nominal probe DC resistance measures 9.87 ± 0.50 Ω from center to outer conductor. This higher resistance reflects the 9.0-meter length of the Bently Nevada 330105-02-12-90-02-05. The value remains tightly controlled for consistent signal integrity over longer distances.

Mechanical Dimensions

Thread size is 3/8-24 with a maximum engagement of 0.563 inches. Weight equals 323 g per meter, so the 9.0-meter probe weighs approximately 2.91 kg. External dimensions for the probe head and packaging are 20.4 cm x 22.2 cm x 3.7 cm.

Temperature Range (Standard Probe)

• Operating and storage: -52°C to +177°C (-62°F to +350°F)

Extended Temperature Range Option

If you order the extended temperature version:

• Probe tip: -52°C to +218°C (-62°F to +425°F)

• Cable and connector: -51°C to +260°C (-60°F to +500°F)

A critical warning: temperatures below –34°C (–30°F) may cause premature pressure seal failure. Always respect this lower limit.

Humidity Performance

IEC standard 68-2-3 testing shows less than a 3% change in Average Scale Factor (ASF). The test runs for 56 days at 93% relative humidity. This probe maintains stable measurements in wet environments.

Pressure Sealing

A Viton® O-ring seals differential pressure between the probe tip and case. Note that Bently Nevada does not pressure test each probe before shipment. The design still provides reliable sealing for most industrial applications.

Hazardous Area Approvals

The Bently Nevada 330105-02-12-90-02-05 works in multiple hazardous area classifications.

Intrinsically Safe Installation (ia)

Use with zener barriers (drawing 141092) or galvanic isolators. Approvals include:

• Class I, Zone 0: AEx/Ex ia IIC T5…T1 Ga

• Class I, Groups A, B, C, D

• Class II, Groups E, F, G

• Class III

Non-incendive Installation (nA, ec)

Use with non-incendive circuits per drawing 140979. Approvals include:

• Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc

• Class I, Division 2, Groups A, B, C, D

• Class I, Zone 2: AEx/Ex ec llC T5…T1 Gc

Temperature Schedule for EPL Ga and Gc

• T1: -55°C to +232°C

• T2: -55°C to +177°C

• T3: -55°C to +120°C

• T4: -55°C to +80°C

• T5: -55°C to +40°C

Temperature Schedule for EPL Dc

• T280°C at Ta -55°C to +232°C

• T225°C at Ta -55°C to +177°C

• T170°C at Ta -55°C to +120°C

• T130°C at Ta -55°C to +80°C

• T105°C at Ta -55°C to +100°C

• T90°C at Ta -55°C to +40°C

Installation Guidelines

First, check the thread engagement does not exceed 0.563 inches to avoid damaging the probe case. Next, connect the Miniature ClickLoc connector by pushing and twisting until it clicks. For intrinsic safety applications, follow drawing 141092 carefully. For non-incendive circuits, use drawing 140979. Additionally, route the 9.0-meter cable away from high-voltage lines to prevent signal interference. Finally, keep the ambient temperature above -34°C to protect the pressure seal.

Packaging List

• Bently Nevada 330105-02-12-90-02-05 reverse mount probe (1 unit)

• Pre-attached Miniature ClickLoc coaxial connector

• Viton® O-ring (factory installed)

• Multilingual installation quick-start guide

Certificates and warranty are not included in this package.

Shipping Information

We ship exclusively via FedEx, UPS, or DHL. Each shipment includes tracking and basic insurance coverage.

Frequently Asked Questions (FAQ)

1. What is the main difference between 330105-02-12-50-02-05 and 330105-02-12-90-02-05?
The difference is cable length. The -90 option gives you 9.0 meters instead of 5.0 meters. DC resistance also changes to 9.87 Ω for the longer version.

2. Can I use this probe with my existing 3300 XL extension cable?
Yes. The Bently Nevada 330105-02-12-90-02-05 uses the standard Miniature ClickLoc connector. It mates directly with all 3300 XL series extension cables and proximitors.

3. Is the 9.0-meter length suitable for Zone 0 installations?
Absolutely. When installed with intrinsically safe barriers per drawing 141092, the full 9.0-meter probe meets AEx/Ex ia IIC T5…T1 Ga for Zone 0.

4. What happens if the ambient temperature drops below -34°C?
The pressure seal may fail prematurely. You must keep the operating environment above -34°C (-30°F) to maintain seal integrity.

5. Does humidity affect the 330105-02-12-90-02-05 measurement accuracy?
Humidity causes less than a 3% change in Average Scale Factor after 56 days at 93% RH. This change is minimal for most monitoring applications.