Bently Nevada 330907-05-30-50-02-CN 3300 NSv Reverse Mount Probe

Bently Nevada 330907-05-30-50-02-CN 3300 NSv Reverse Mount Probe Overview

The Bently Nevada 330907-05-30-50-02-CN belongs to the 3300 NSv proximity transducer series. Engineers design this reverse mount probe specifically for tight installation spaces in industrial machinery.

This unit provides superior side-view response characteristics compared to conventional 3000-series probes. High chemical resistance allows reliable operation inside process compressors and aggressive environments.

3300 NSv Series Technical Profile

The 3300 NSv transducer system measures dynamic and static displacement in small-footprint rotating equipment. It operates on eddy-current principles to deliver non-contact vibration and shaft position monitoring.

Patented TipLoc molding locks the polyphenylene sulfide probe tip to the stainless steel body. Gold-plated brass ClickLoc connectors secure signal connections against severe machine vibration.

MECE Technical Specifications

1. Identification Parameters

• Brand: Bently Nevada
• Model: 330907-05-30-50-02-CN
• Product Series: 3300 NSv Series
• Probe Type: Reverse Mount Proximity Probe
• Origin: Made in U.S.A.

2. Measuring Performance & System Output

• Linear Range: 1.5 mm (60 mils), starting at 0.25 mm (10 mils)
• Gap Range: 0.25 mm to 1.75 mm (10 to 70 mils)
• Output Voltage Range: -1 Vdc to -13 Vdc across linear span
• Recommended Gap Setting: 1.0 mm (40 mils)
• Target Sensitivity: Standard 7.87 V/mm (200 mV/mil) with standard system matching
• Resolution: Sub-micron non-contact displacement detection
• Interference Immunity: High resistance to side-wall clearance constraints

3. Electrical & Cable Specifications

• Probe Resistance (RPROBE): 5.3 ± 0.7 ohms (center to outer conductor)
• Cable Length Option: 5.0 meters (16.4 feet) integral cable
• Connector Type: Miniature coaxial ClickLoc connector (standard cable)
• Field Wiring Requirement: 0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad cable
• Maximum Field Cable Distance: 305 meters (1,000 feet) to proximitor sensor

4. Mechanical & Physical Properties

• Case Threading: M10x1 metric threads
• Thread Length Engagement: Maximum 15 mm
• Tip Material: Polyphenylene sulfide (PPS)
• Case Material: AISI 304 Stainless Steel (SST)
• Maximum Rated Torque: 22.6 N·m (200 in·lb)
• Recommended Torque: 7.5 N·m (66 in·lb)
• System Weight: Approximately 14 g to 150 g (0.5 oz to 5.3 oz)

5. Environmental & Sealing Tolerance

• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Storage Temperature: -52°C to +177°C (-62°F to +351°F)
• Pressure Sealing: Viton O-ring differential pressure seal
• Low Temperature Limit: Sustained exposures below -34°C (-30°F) reduce seal life

6. Compliance & Approvals

• Agency Approval: CN Option (Country-Specific approvals)

Commercial Terms & Shipping

• Warranty Coverage: 12 months comprehensive warranty
• Dispatch Timeframe: Ships within 24 to 48 hours
• Express Logistics Partners: FedEx, UPS, DHL express delivery
• Packaging List: 1x Bently Nevada 330907-05-30-50-02-CN probe assembly, protective tip cap, factory document

Installation & Mounting Guidelines

Mount the probe from the reverse side using the M10x1 threaded housing. Ensure thread engagement does not exceed 15 mm inside the mounting bracket.

Apply 7.5 N·m torque during final installation. Do not exceed 22.6 N·m torque to prevent thread deformation.

Route the 5.0-meter cable away from high-voltage power lines. Connect the ClickLoc coaxial connector until you feel the locking mechanism engage fully.

Commissioning, Maintenance & Diagnostic Capability

Set the initial probe gap to 1.0 mm (40 mils) using a feeler gauge or multimeter reading -9.0 Vdc bias.

Verify center conductor resistance reads 5.3 ± 0.7 ohms during routine maintenance checks. Inspect the Viton O-ring for physical cracking if operating below -34°C.

Target System Compatibility

The 330907-05-30-50-02-CN probe connects directly to 3300 XL NSv proximitor sensors and extension cables.

This system integrates seamlessly with Bently Nevada 3500 monitoring racks and 3300 series machinery protection systems.

Typical Application Scenarios

Process Gas Compressors: Handles corrosive vapor atmospheres where standard probes degrade rapidly.

Centrifugal Pumps: Measures radial shaft vibration in cramped bearing housings with narrow clearance windows.

Global PLC Spare HUB's Insight

Our field experience shows that side-view clearance causes signal distortion in standard probes placed near counterbores. The 3300 NSv architecture minimizes side-wall interference when target area is limited.

During a field retrofit on an offshore gas compressor, a client experienced false vibration spikes from tight counterbore walls. Installing the 330907-05-30-50-02-CN probe cleared the side-wall interference instantly. The system maintained clean gap readings across a full temperature cycle.

Selection Guide

Select reverse mount probes when access to the target shaft occurs from inside the bearing cavity.

Verify thread pitch before ordering. Choose M10x1 metric threads for European/Asian machinery castings, or 3/8-24 threads for imperial housings.

Frequently Asked Questions

Q1: What does the "CN" suffix mean in part number 330907-05-30-50-02-CN?

A1: The CN code designates country-specific agency approvals for industrial installation compliance.

Q2: Can I use this probe in temperatures below -34°C?

A2: The probe operates down to -52°C, but long exposure below -34°C reduces Viton seal lifespan.

Q3: How do I know the ClickLoc connector is securely fastened?

A3: ClickLoc connectors snap into position securely to prevent self-loosening under high machine vibration.

Q4: Why select an NSv probe instead of a standard 3300 XL probe?

A4: NSv probes suit tight spaces and small targets where side-wall metal interference affects standard probes.

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