Bently Nevada 330105-02-12-90-12-CN 3300 XL 8mm Reverse Mount Probe Overview

The Bently Nevada 330105-02-12-90-12-CN is a specialized reverse mount eddy current probe. This sensor measures shaft vibration and position in turbomachinery. It belongs to the trusted 3300 XL series from Bently Nevada. The model 330105-02-12-90-12-CN uses an 8 mm tip diameter for standard applications. Its FluidLoc cable option provides additional fluid sealing protection. Note that most installations do not require this cable option. Consider your application carefully before selecting this configuration.

Technical Specifications of Model 330105-02-12-90-12-CN

Electrical and DC Resistance Specifications

The 330105-02-12-90-12-CN has a nominal probe DC resistance of <span style=”color:#e03e2d;”>9.87 ± 0.50 Ω</span> from center to outer conductor. This resistance value applies to the 9.0 meter total length option. The measurement uses a standard ohmmeter across the coaxial connector. Stable resistance ensures consistent probe performance over long cable runs. The Bently Nevada 330105-02-12-90-12-CN maintains signal integrity throughout its 9.0 meter length.

FluidLoc Cable Feature

The 330105-02-12-90-12-CN includes the FluidLoc cable option -12. This option provides enhanced fluid sealing along the cable length. The vast majority of 330105 and 330106 installations do not need FluidLoc. The standard probe sleeve already offers adequate fluid protection. Only order this option for applications with aggressive fluid exposure. The Bently Nevada 330105-02-12-90-12-CN suits specialized high-risk environments.

Humidity and Environmental Performance

The 330105-02-12-90-12-CN shows less than <span style=”color:#e03e2d;”>3% change in Average Scale Factor (ASF)</span> during humidity testing. This testing follows IEC standard 68-2-3 at 93% relative humidity. The test duration runs for up to 56 days continuously. Such performance ensures reliable operation in humid plant environments. The Bently Nevada 330105-02-12-90-12-CN resists moisture-related drift effectively.

Hazardous Area Approvals for 330105-02-12-90-12-CN

The Bently Nevada 330105-02-12-90-12-CN carries agency approval option CN. This indicates <span style=”color:#e03e2d;”>country specific approval</span> for certain regional markets.

Intrinsically Safe (ia) Approvals

For ia installation with zener barriers or galvanic isolators per drawing 141092:

• 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) Approvals

For nA installation with non-incendive circuit per drawing 140979:

• 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 IIC T5…T1 Gc

 Temperature Classification Schedule

For EPL Ga and Gc (probe only):

• 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

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 Guide for Bently Nevada 330105-02-12-90-12-CN

Proper installation ensures accurate vibration data from your 330105-02-12-90-12-CN. Follow these steps for best results.

• Thread Engagement: Use maximum 0.563 inches of thread engagement with the 3/8-24 thread.

• Connector Type: The miniature ClickLoc coaxial connector provides secure locking attachment.

• Cable Routing: Avoid sharp bends or kinks in the 9.0 meter FluidLoc cable during installation.

• Temperature Caution: Keep probe away from temperatures below -34°C to protect the pressure seal.

• Surface Prep: Clean the mounting hole threads before inserting the 3/8-24 probe case.

• Torque Spec: Hand-tighten plus one quarter turn with a wrench for secure mounting.

Do not overtighten the 330105-02-12-90-12-CN into the mounting hole. Overtightening can damage the Viton O-ring seal. The FluidLoc cable requires no special handling beyond standard care. Always verify hazardous area classification before installation. Check that country specific approval CN applies to your region.

Packaging List for Model 330105-02-12-90-12-CN

Your order includes these items in original factory packaging:

• One Bently Nevada 330105-02-12-90-12-CN 3300 XL 8mm Reverse Mount Probe

• One pre-attached 9.0 meter FluidLoc cable with miniature ClickLoc connector

• One Viton O-ring pre-installed on the probe case

• One protective plastic tip cover for shipping safety

• One anti-static bag for electrostatic discharge protection

No calibration certificates or warranty cards appear inside this package. The box contains only the hardware items listed above. Each unit ships in genuine Bently Nevada protective packaging.

Common FAQs for Bently Nevada 330105-02-12-90-12-CN

Q1: What makes the FluidLoc cable different from standard cable?
A: FluidLoc cable provides enhanced fluid sealing along the cable length. The 330105-02-12-90-12-CN uses this option for aggressive fluid exposure environments.

Q2: Do most installations really need the FluidLoc cable option?
A: No, Bently Nevada states that most 330105 and 330106 installations do not need FluidLoc. The standard probe sleeve offers adequate protection for typical applications.

Q3: What does the CN approval code mean for this probe?
A: The CN code indicates country specific approval for certain regional markets. Please verify that this approval applies to your location before ordering.

Q4: Can the 330105-02-12-90-12-CN work in Zone 0 hazardous areas?
A: Yes, this probe carries ia approval for Class I, Zone 0 installations. You must install it with zener barriers or galvanic isolators per drawing 141092.

Q5: What is the total length of the 330105-02-12-90-12-CN probe?
A: The -90 option gives you 9.0 meters (29.5 feet) of total length including cable and connector.

Why Choose the Bently Nevada 3300 XL Series?

The 330105-02-12-90-12-CN delivers specialized protection for demanding fluid exposure applications. Its 3300 XL series design offers interchangeability without recalibration. The reverse mount configuration saves space in tight turbine and compressor installations. The FluidLoc cable adds an extra layer of fluid sealing protection. The 9.0 meter length reaches distant monitoring panels without extension cables. The wide temperature range covers most industrial turbomachinery applications. Bently Nevada engineers designed this probe for decades of service life. Many power plants and refineries standardize on the 3300 XL series. The Bently Nevada 330105-02-12-90-12-CN suits specialized high-risk fluid environments. Order yours today after confirming the FluidLoc option is necessary for your application.