Description
It belongs to the 3300 XL NSv (Narrow Side View) Proximity Transducer System, engineered for compact spaces or small target areas where physical clearance or counterbore restrictions prevent the installation of standard 5mm or 8mm probes.
Commercial and Supply Chain Status
- Condition: New Original (Factory Sealed), New Surplus, or Refurbished (Tested to OEM Specifications)
- Warranty: 12-Month Industrial Component Warranty
- Availability: In Stock / Global Logistics Delivery Available
- Lead Time: Ships within 1 to 3 business days from order confirmation
- Pricing: Price scales with market demand and core legacy component availability; contact us for a firm quote.
Part Number Breakdown
The configuration code 330980-71-05 maps to the following structural and testing variables:
- 330980: Base model configuration for the 3300 XL NSv Proximitor Sensor.
- 71: Total System Length & Mounting: 7.0 meters (23.0 feet) total electrical loop calibration length, optimized for DIN rail mounting templates.
- 05: Agency Approvals: Multiple Approvals option (includes ATEX, IECEx, and North American CSA certifications for intrinsically safe zone classification boundaries).
Technical Specifications
| Parameter | Value |
| System Profile | 3300 XL NSv (Narrow Side View) Proximity Transducer System |
| Nominal Target Scaling | 7.87 V/mm (200 mV/mil) Average Scale Factor |
| Linear Range | 1.5 mm (60 mils), typically from 0.25 to 1.75 mm (10 to 70 mils) gap |
| System Compatibility | Supports 3300 NSv probes and legacy 3300 RAM proximity components |
| Power Consumption | Maximum 12 mA current draw at nominal supply values |
| Supply Voltage Range | −17.5 V DC to −26 V DC (without barriers); −23 V DC to −26 V DC (with barriers) |
| Output Impedance | 50 \Omega baseline loop resistance |
| Wiring Interface | SpringLoc terminal block strip array (Tool-free compression clamps) |
| Enclosure Material | A380 Aluminum casing with an isolating mounting base matrix |
| Operating Temperature | −52 to +100 °C (−62 to +212 °F) |
Architecture and Application Focus
The 3300 XL NSv system solves specific application challenges where a standard 8mm probe would experience magnetic interference from adjacent metals.
Narrow Side View Mechanics
- Standard eddy-current probes radiate an unconfined RF field that can inadvertently lock onto the side walls of narrow counterbores or shaft shoulders.
- The NSv design constraints focus the magnetic flux paths tighter to the centerline of the probe tip. This minimizes side-view interaction, making the 330980-71-05 perfect for tracking radial vibration on shafts smaller than 51 mm (2.0 in) or axial thrust position on flat targets under 15 mm (0.6 in).
- Common deployments include high-speed centrifugal air compressors, industrial refrigeration packages, and process gas expansion units.
Backwards Compatibility
The 330980-71-05 functions as a drop-in upgrade path for older 3300 RAM transducer installations. It allows facilities to retain pre-existing, deeply embedded field probes and cables while modernizing the control room cabinet with updated RFI/EMI-shielded Proximitor hardware.
Engineering Insights: Installation and Loop Matching
Total System Length Matching Rules
The 330980-71-05 is hard-coded and factory-calibrated for a 7.0-meter total electrical system length (-71).
- Required Setup Match: The combined length of your chosen 3300 NSv probe and its companion extension cable must calculate out to exactly 7.0 meters (e.g., a 1.0-meter probe coupled to a 6.0-meter extension cable, or a 5.0-meter probe coupled to a 2.0-meter extension cable).
- Mixing a 7.0-meter Proximitor sensor with a 5.0-meter or 9.0-meter cable array shifts the internal RC oscillator profile, corrupting the 200 mV/mil scaling curve and causing inaccurate vibration monitoring.
SpringLoc Terminal Management
Unlike legacy blocks that rely on traditional screw terminals, this module features a tool-free SpringLoc terminal block.
- Push the integrated tension lever back using a small screwdriver or flat blade, insert the stripped conductor lead, and release.
- This mechanical spring constant maintains constant contact pressure over time, preventing field connections from backing out or developing high-resistance junctions due to continuous skid-edge vibration.
Frequently Asked Questions
Q: Can this NSv Proximitor sensor be paired with a standard 3300 XL 8mm probe? A: No. Standard 3300 XL 8mm probes possess a completely different internal coil winding inductance profile compared to NSv elements. Forcing an 8mm probe onto an NSv Proximitor loop will cause a permanent “Not OK” state or severe measurement clipping.
Q: What happens if the supply voltage drops below −17.5 V DC? A: If the negative DC input rails sag below the minimal startup threshold, the internal amplifier loses the overhead voltage required to swing the full output range. This shortens the linear zone, making high-amplitude dynamic vibration peaks truncate artificially and generating invalid machinery alerts.
Q: Does the aluminum housing require separate electrical isolation plates? A: No, the 330980-71-05 contains an integrated, isolated mounting base layout. This isolates the module body electrically from the underlying DIN rail structure, eliminating the need to install separate plastic isolation backing pads to prevent loop ground currents.
