Bently Nevada 330105-02-12-50-02-05 Reverse Mount Probe

Bently Nevada 330105-02-12-50-02-05 Reverse Mount Probe

Product Introduction

The Bently Nevada 330105-02-12-50-02-05 belongs to the trusted 3300 XL series. Users primarily apply this reverse mount probe in turbomachinery monitoring. It measures shaft vibration and position accurately. This specific version includes a 5.0-meter (16.4 feet) cable. The Miniature ClickLoc coaxial connector ensures secure and simple installation. Furthermore, the -05 agency approval option covers CSA, ATEX, and IECEx standards. You can deploy it safely in Class I, Zone 0 or Zone 2 hazardous locations.

Technical Specifications

Electrical Characteristics

The probe’s nominal DC resistance is 8.73 ± 0.50 Ω measured from center to outer conductor. This value applies specifically to the 5.0-meter length of the Bently Nevada 330105-02-12-50-02-05. The resistance consistency ensures reliable signal transmission.

Mechanical Dimensions

Its case thread is 3/8-24 with a maximum thread engagement of 0.563 inches. The probe weighs approximately 323 g per meter (11.4 oz per foot). Overall product dimensions are 20.4 cm x 22.2 cm x 3.7 cm.

Temperature Ranges

The standard probe operates from -52°C to +177°C (-62°F to +350°F). An extended temperature range version supports the probe tip up to +218°C (+425°F). The cable and connector handle -51°C to +260°C (-60°F to +500°F). However, exposing the probe below –34°C (–30°F) may cause premature pressure seal failure.

Humidity and Pressure Performance

Humidity testing shows less than a 3% change in Average Scale Factor (ASF). This testing follows IEC standard 68-2-3 for up to 56 days at 93% humidity. The probe uses a Viton® O-ring to seal differential pressure between the tip and case. Note that the factory does not pressure test each probe before shipment.

Hazardous Area Approvals

The Bently Nevada 330105-02-12-50-02-05 carries multiple certifications.

Intrinsically Safe (ia)

Install it with intrinsically safe 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 (nA, ec)

Install it per drawing 140979 for non-incendive circuits. 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, verify the thread engagement does not exceed 0.563 inches to avoid damage. Next, use the Miniature ClickLoc connector for a reliable coaxial connection. Additionally, ensure the ambient temperature stays within the specified range for your approval class. For intrinsic safety, always follow drawing 141092. For non-incendive installations, use drawing 140979. Finally, avoid exposing the probe below -34°C to protect the pressure seal.

Packaging List

• Bently Nevada 330105-02-12-50-02-05 reverse mount probe (1 unit)

• Miniature ClickLoc coaxial connector (pre-attached)

• Viton® O-ring seal (installed)

• Installation instruction sheet

Note: Certificates and warranty are not included in the package.

Shipping Information

We ship using FedEx, UPS, or DHL. Delivery times vary by destination. All shipments include tracking and basic insurance.

Frequently Asked Questions (FAQ)

1. Can I use the Bently Nevada 330105-02-12-50-02-05 in a Zone 0 hazardous area?
Yes. With intrinsically safe barriers per drawing 141092, it meets AEx/Ex ia IIC T5…T1 Ga for Zone 0.

2. What happens if I operate this probe below -34°C?
Exposing it below -34°C may cause premature failure of the pressure seal. Keep the operating temperature above this limit.

3. Does the factory pressure test each 330105-02-12-50-02-05 probe?
No. Bently Nevada does not pressure test probes before shipment. The Viton® O-ring still provides differential pressure sealing.

4. How does humidity affect the probe’s scale factor?
Testing shows less than a 3% change in Average Scale Factor after 56 days at 93% humidity per IEC 68-2-3.

5. What is the total length of this reverse mount probe?
The -50 option indicates 5.0 meters (16.4 feet). This model number 330105-02-12-50-02-05 specifies that length clearly.